Dissertations/Thesis

Clique aqui para acessar os arquivos diretamente da Biblioteca Digital de Teses e Dissertações da UFAL

2024
Dissertations
1
  • GRAZIELLE LOBO COELHO
  • ANTIVIRAL ACTIVITY OF NEW BENZOTHIAZOLE ANALOGS AGAINST CHIKUNGUNYA VIRUS IN VITRO
  • Advisor : ENIO JOSE BASSI
  • COMMITTEE MEMBERS :
  • ABELARDO SILVA JUNIOR
  • ENIO JOSE BASSI
  • TICIANO GOMES DO NASCIMENTO
  • Data: Feb 9, 2024


  • Show Abstract
  • Chikungunya virus (CHIKV) is the causative agent of Chikungunya fever (FCHIKV) transmitted by arthropod vectors of the genus Aedes sp. Patients affected by FCHIKV present symptoms such as fever, headache, intense myalgia and arthralgia that can last for months to years after infection. FCHIKV can lead to chronic complications that can affect the quality of life of patients, who suffer from the lack of specific treatment. Considering this context, the objective of the present study was to evaluate the antiviral activity of new, previously synthesized benzothiazole analogues against CHIKV in vitro. Initially, a cytotoxicity test was carried out with the 19 compounds for initial screening and determination of concentrations for use in Vero E6 cells using the MTT methodology, in which it was found that 8 compounds were cytotoxic at 50 μM. Thus, the remaining compounds were subjected to serial cytotoxicity testing concentrations 200, 100 and 50 μM, in which only 3 compounds did not show cytotoxicity at all concentrations tested. Based on these results, the 11 compounds were tested in a post-treatment assay on Vero E6 cells inoculated with CHIKV (MOI 0.01) at concentrations from 50 to 6.25 μM for 48h and cell viability and viral inhibition were determined by MTT. All tested compounds had a significant viral effect at the highest concentration tested, then selectivity indices (SI) were evaluated to select the most promising compounds, obtaining IS >20.55 for EdCHIK10; >30.58 for EdCHIK39 and >20.87 for EdCHIK82.To confirm the antiviral activity, an intracellular flow cytometry assay was carried out in order to detect a reduction in the percentage of cells positive for CHIKV post-treatment with the compounds, an average reduction from 40.97 ± 9.84% of virus-infected cells detected in the untreated viral control to 8.40 ± 1.81 % in EdCHIK10, 11.13 ± 0.35 % in EdCHIK39 and 21.86 ± 12.04 % in EdCHIK82. To understand the possible mechanisms of action, a time of drug addition test was then carried out, where activity was evaluated pre, during and post-treatment, in which a slight inhibition was observed in the pre-treatment test for EdCHIK10 and 39, no inhibition during adsorption and significant inhibition in post-treatment was observed to all 3 compounds. The structure-activity relationship study of the compounds showed substituents at position 6 of the benzothiazole with the most promising antiviral activity and SI. Thus, it is concluded that the compounds demonstrated promising antiviral activity against CHIKV in vitro, contributing to the future design of new bioactive molecules against this arbovirus.

2
  • CAMILLA AMANDA DE OLIVEIRA GOMES
  • TECHNOLOGICAL PROSPECTION OF THE TREATMENT OF VISCERAL LEISHMANIASIS AND IN VITRO 
    LEISHMANICIDAL POTENTIAL OF SYNTHETIC COMPOUNDS DERIVED FROM PURPUROGALINE
  • Advisor : ALINE CAVALCANTI DE QUEIROZ
  • COMMITTEE MEMBERS :
  • ALINE CAVALCANTI DE QUEIROZ
  • LUISE LOPES CHAVES
  • MORGANA VITAL DE ARAÚJO
  • Data: Mar 11, 2024


  • Show Abstract
  • Leishmaniasis is an endemic parasitic disease in approximately 102 countries and remains a serious public health problem. Currently, the available drugs have several pharmacotherapeutic limitations, and the search for new prototypes is urgent. In this context, a patent review of pharmacological innovations for the treatment of visceral leishmaniasis in the Americas over the last six years (2017-2023) was conducted. By inserting descriptors into platforms such as The Lens, World Intellectual Property Organization (WIPO), European Patent Office (EPO), United States Patent and Trademark Office (USPTO) and Brazilian Patent and Trademark Office (INPI) patents were found for subsequent analysis of publication year parameters, IPC, country of origin, authors, pharmacological assays and bioactives. Eleven patents report leishmanicidal activity in the Leishmania infantum chagasi species in vitro and in vivo of synthetic or natural bioactives. Furthermore, this study aims to investigate the cytotoxic and leishmanicidal activity in vitro of synthetic derivatives of purpurogallin in the species Leishmania amazonensis and Leishmania infantum chagasi. In the experimental study, the MTT colorimetric assay (3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyltetrazolium bromide) was performed to determine the cytotoxicity of the derivatives in macrophages, followed by anti-Leishmania evaluation in promastigotes of the mentioned species and determination of the selectivity index. The results obtained demonstrated low cytotoxicity in the J774.A1 lineage (macrophages) up to the highest tested concentration (100 μM) with a maximum effect <50%, except for 19a and 18e, which exhibited cytotoxicity >80%. Substances 19a, 18b, 18d and 18e were cytotoxic against promastigotes of both species, with a maximum effect >80%. It was found that derivative 18 showed significant selectivity against L. infantum chagasi strains with a selectivity index >10,06. Therefore, efficient pharmacological innovations were observed in inhibiting the parasite causing visceral leishmaniasis in the Americas, as well as the leishmanicidal activity of purpurogallin derivatives in both tested Leishmania species and low cytotoxicity against host cells.

3
  • CINTHYA LUNA VELOSO DE LIMA
  • DEVELOPMENT AND CHARACTERIZATION OF A DENTAL FLOSS WITH BRAZILIAN RED PROPOLIS

  • Advisor : ISABEL CRISTINA CELERINO DE MORAES PORTO
  • COMMITTEE MEMBERS :
  • ISABEL CRISTINA CELERINO DE MORAES PORTO
  • JOSE MARCOS DOS SANTOS OLIVEIRA
  • MARIA ALINE BARROS FIDELIS DE MOURA
  • TICIANO GOMES DO NASCIMENTO
  • Data: Mar 25, 2024


  • Show Abstract
  • Propolis is a resinous material produced by Apis mellifera bees, from a mixture of exudates, leaves, flowers, and buds of plant species with bee salivary secretions. Propolis has been proven to have antimicrobial and anti-inflammatory activity. This study aimed to develop polytetrafluoroethylene (PTFE) dental floss coated with Brazilian red propolis extract. PTFE dental floss was modified with potassium permanganate and nitric acid, and then coated with Brazilian red propolis extract (PVB) at following concentrations of 500, 1000, 2000 and 3000 µg/mL. The presence of PVB extract in the dental floss was investigated using high-performance liquid chromatography and Fourier transform infrared spectroscopy. The antioxidant activity of the dental floss was tested using the DPPH method and the surface morphology was examined using scanning electron microscopy (SEM). The chromatogram showed the presence of PVB biomarkers, with higher amounts of liquiritigenin (6.20µg/mL), isoliquiritigenin (6.19µg/mL) and formononetin (6.90µg/mL). The dental floss coated with PVB extract showed antioxidant activity. SEM images showed that there was a change in the smooth surface of the PTFE dental floss (before), which became more porous and rough after treatment with potassium permanganate and nitric acid. After coating with PVB extract, the dental floss appeared to have been covered with a substance that gave them a more uniform surface. Using the proposed methodology, it was possible to develop a PTFE dental floss coated with PVB at 500, 1000, 2000 and 3000µg/mL concentrations with antioxidant activity.

4
  • LARISSA COSTA SANTOS
  • CARACTERIZAÇÃO BIOQUÍMICA DE UM INIBIDOR DE PROTEASE DA LARVA DO INSETO Tribolium castaneum


  • Advisor : LUCIANO APARECIDO MEIRELES GRILLO
  • COMMITTEE MEMBERS :
  • FRANCIS SOARES GOMES
  • LUCIANO APARECIDO MEIRELES GRILLO
  • MARIA ALINE BARROS FIDELIS DE MOURA
  • Data: Mar 26, 2024


  • Show Abstract
  • Protease inhibitors are substances that have the ability to regulate the action of proteases, blocking their catalytic activity. Many of these inhibitors are produced naturally by the body with the aim of maintaining homeostasis. Protease inhibitors have been the subject of study due to their biotechnological potential in pest control, the food industry, research into new medicines and also to increase understanding of inhibition mechanisms. The present work aimed to investigate the inhibitory activity and biochemical characteristics of a protease inhibitor present in the insect Tribolium castaneum. The first step was to identify in which phase of the insect's life cycle there is a greater production of the inhibitor, then to improve the purity of the sample, the extract was subjected to purification techniques, such as saline precipitation and two-phase and three-phase aqueous systems. After choosing the best technique, the sample was subjected to resistance tests to pH and temperature, the influence of metallic salts and stabilizers, and the action against the phytopathogenic fungus Amphobotrys ricini was also tested. The study revealed the presence of the inhibitor in the larval, pupa and adult stages, with emphasis on the larval stage, which demonstrated more than 40% inhibitory activity. The method that was most efficient for reducing contaminants in the sample was the three-phase aqueous system with isopropanol. The inhibitor activity remained stable at temperatures from 40 to 70ºC, but maintained its activity even at high temperatures, and also remained stable over a wide range of pHs (5-10). Furthermore, the inhibitor activity was influenced by different metal salts and different stabilizers, with BSA and Gelatin notably enhancing the inhibitory activity. Finally, a decrease in the growth rate of the phytopathogenic fungus Amphobotrys ricini was observed. These results highlight the potential use of the endogenous protease inhibitor from the insect T. castaneum, and may also contribute to the understanding of the properties of insect inhibitors and mechanisms of enzyme regulation.


5
  • ANDRESSA LEITE LEAO
  • THE IMPACT OF CLINICAL PHARMACY SERVICES IN ADULT INTENSIVE CARE UNIT: A SYSTEMATIC REVIEW

  • Advisor : SABRINA JOANY FELIZARDO NEVES
  • COMMITTEE MEMBERS :
  • ALFREDO DIAS DE OLIVEIRA FILHO
  • IRINALDO DINIZ BASILIO JUNIOR
  • SABRINA JOANY FELIZARDO NEVES
  • Data: Mar 27, 2024


  • Show Abstract
  •  

    Patients admitted to Intensive Care Units (ICU) have an increased risk of developing adverse events related to medications, due to their clinical conditions and the constant change in pharmacotherapy. These medication-related problems can occur at different stages of the patient care process, from prescription to administration. The inclusion of clinical pharmacists in these intensive care units allows for an improvement in patient outcomes, due to the significant reduction in these DRPs. Although there are studies in the literature on the systematization of pharmaceutical services, as well as their impacts on patient care, in Brazil, there are still few publications in this context. Therefore, this study aims to evaluate the impacts of clinical pharmacy services provided in Adult Intensive Care Units. A systematic review was carried out in the databases: Scielo, Cochrane, Scopus, LILACS, Pubmed, Web of Science, Embase and Medline. The search strategies to obtain information were using the following keywords: The search strategy was carried out by combining the main keywords: “drug related problem”, “medication related problem”, “adverse drug reaction”, “adverse drug event”, “drug therapy problem”, “medication errors” “intensive care unit”. A total of 22 articles were selected for the analysis of the full articles, of which the clinical pharmaceutical services developed were between pharmacotherapy review, pharmacotherapeutic follow-up, pharmacotherapeutic monitoring, health condition management and health education, respectively. The humanistic, clinical and economic impacts on the activities developed by the pharmacist were evaluated. These results were evaluated after indicators that demonstrated the increase in pharmaceutical interventions to the responsible professionals, the detection of drug-related problems, and the implementation and/or implementation of pharmaceutical services. Thus, it was observed that the role of the pharmacist in the ICU enables significant results in different areas, whether in the reduction of drug-related problems, cost-benefit and patient safety.

6
  • EMANOEL GUILHERMINO DA SILVA JUNIOR
  • SEASONALITY STUDY OF THE HYDROALCOHOLIC EXTRACT OF THE GREEN-BROWN PROPOLIS OF UNIÃO DOS PALMARES AND STANDARDIZATION OF CLAE-DAD TO QUANTIFY ITS PHENOLIC MARKERS

  • Advisor : TICIANO GOMES DO NASCIMENTO
  • COMMITTEE MEMBERS :
  • ISABEL CRISTINA CELERINO DE MORAES PORTO
  • JOSE ROBERTO DE OLIVEIRA FERREIRA
  • LOUISIANNY GUERRA DA ROCHA
  • MARIA ALINE BARROS FIDELIS DE MOURA
  • Salvana Priscylla Manso Costa
  • TICIANO GOMES DO NASCIMENTO
  • Data: Mar 27, 2024


  • Show Abstract
  • Propolis is a sticky, viscous natural substance with a characteristic odor. It has antiinflammatory, antiviral, antibacterial, antiparasitic, styptic, astringent, phytoinhibitory, phytotoxic, antioxidant, immunostimulating, hepatoprotective, cytotoxic, anticancer, antiallergic, antifungal, antiprotozoal, analgesic and antinociceptive activities. Brown propolis manifests highly variable chemical profiles throughout the Brazilian territory, which also happens, consequently, with its biological activity. Propolis has its chemical profile modified as a result of a synergism of environmental factors such as sunlight, temperature, humidity, precipitation, soil fertility and salinity. Therefore, the need for continuous improvement of the propolis quality control strategy stands out, with the aim of standardizing it. This study aimed to elucidate the seasonal variation of quality parameters of greenish-brown propolis (PMUP) from the Alagoas municipality of União dos Palmares-Alagoas-Brazil. HPLC-DAD confirmed pinocembrin as the most abundant bioactive compound in PMUP. Furthermore, artepillin-C, pinobanksin, pinostrobin, galangin and chrysin constituted markers whose concentrations were relatively high in the apiceutic period. The average content of total phenolic compounds, considering all months surveyed, consisted of 81.1 ± 26.05 mg EAG/g; the average total flavonoid content, 38.45 ± 10.10 mg EQ/g. Both results are above the concentration found in other types of brown propolis from Brazil. The average concentration of total flavanones and dihydroflavonols in PMUP was 1.59 ± 0.24 mg EP/20 mg and correspond to 7.95% of flavonones and flavononols. The average IC50 over the 12 months, in the DPPH• chemical test, was 47.72 ± 13.02 µg/mL, which can be classified as good, surpassing the sequestration capacity of other Brazilian brown propolis. The broth microdilution test revealed that Gram-positive bacteria were more sensitive to PMUP than Gram-negative bacteria. The month of January 2021, in which there was a peak in the concentration of total flavonoids, was the month in which PMUP showed the greatest capacity to inhibit the growth of all strains tested. The MICs obtained were as follows: 64-256 µg/mL for S. aureus; 256-1024 µg/mL for E. faecalis; 64-128 µg/mL for E. coli; and 64-256 µg/mL for C. albicans. In all chemical tests, bimodal variation was observed, which frequently comprised two four-month cycles with a high content of active metabolites and DPPH• radical scavenging capacity. PMUP proved to be a rich source of bioactive compounds, whose range of action is comprehensive. In vitro tests reveal the pharmacological potential of opototherapic, as its results remain significant even during periods of lower metabolite content.

7
  • ALLYSSON FIRMINO DE FRANCA FARIAS
  • PRE-CLINICAL TOXICOLOGICAL EVALUATION OF NANOENCAPSULATES LOADED WITH RED PROPOLIS EXTRACT FROM ALAGOAS USING ZEBRAFISH (DANIO RERIO) AS AN EXPERIMENTAL MODEL

  • Advisor : TICIANO GOMES DO NASCIMENTO
  • COMMITTEE MEMBERS :
  • ISABEL CRISTINA CELERINO DE MORAES PORTO
  • JOSE ROBERTO DE OLIVEIRA FERREIRA
  • MARIA ALINE BARROS FIDELIS DE MOURA
  • Salvana Priscylla Manso Costa
  • TICIANO GOMES DO NASCIMENTO
  • Data: Mar 27, 2024


  • Show Abstract
  • Propolis is a resinous substance that has several pharmacological activities. However, most of the substances present have low bioavailability. In this context, nanoencapsulations represent a promising approach to optimize the bioavailability and stability of compounds. Therefore, this work aims to evaluate the pre-clinical toxicity of nanoencapsulated products loaded with red propolis extract from Alagoas. To this end, Zebrafish (Danio rerio) was used as an experimental model. The FET Test was used, following the guidelines established in OECD TG 236. The nanoencapsulated substances were diluted to the desired concentrations with E2 embryonic medium solution. 20 fertilized embryos were used for each concentration tested and for the negative control. The concentrations tested were 50 µg/mL; 25 µg/mL; 10 µg/ml; 2.5 µg/ml; and placebo. At the end of 96 hours, the animals were contained in a drop of 0.4% tricaine, on a microscope slide, in order to be photographed. The results showed that at higher concentrations (50 and 25 µg/mL) for all samples, there was a high mortality rate, reaching 100% of deaths, being evident mainly at 72 and 96 hpf. At lower concentrations of 2.5 and 10 µg/mL, the survival rate was higher, however sublethal and teratogenic effects were observed in zebrafish larvae. Ademias, it was found that the anomalies that appeared most were edemas in the pericardium and yolk sac, in addition to the absence of a non-inflated swim bladder, from 72 to 96 hpf. Therefore, it was possible to investigate the effects of exposing D. rerio embryos exposed to nanoencapsulated PCL: Pluronic; Eudragit: Pluronic; Liposomes, Inclusion Complexes and crude red propolis extract, in different concentrations: 0; 2.5; 10; 25 and 50 μg/mL, through the evaluation of lethal, sublethal and teratogenic effects, during periods of 24, 48, 72 and 96 hpf.

8
  • GISELLE AMORIM LIRA
  • Immune checkpoint inhibitors in cancer patients from the perspective of pharmaceutical care – an integrative review
  • Advisor : ENIO JOSE BASSI
  • COMMITTEE MEMBERS :
  • ENIO JOSE BASSI
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • Danilo Candido de Almeida
  • Data: Mar 27, 2024


  • Show Abstract
  • Pharmaceutical care is integrated with cancer patient care in a variety of ways, ranging
    from antineoplastic drug control to clinical follow-up and oncological therapeutic
    implications. Immunological checkpoint inhibitors (ICIs), a kind of immunotherapy
    using monoclonal antibodies used in the treatment of various types of malignancies,
    are among the potential new therapeutic options in the oncological field. However,
    although promising, the toxicity of ICIs, such as immune system-related adverse
    events (irEAs), can impact the outcome of treatment. The pharmacist is the
    professional who seeks to prevent, identify and solve problems related to medicines,
    thus being essential for the care of the oncological patient in treatment with ICIs. The
    aim of this work was to assess the contribution of the pharmacist in the therapeutic
    monitoring of the oncological patient in treatment with ICIs. In this way, an integrative
    review of studies of oncological patients treated with ICIs and that had the participation
    of the pharmacist was carried out in the databases: Pubmed, Scopus, Embase and
    Web of Science. 2152 studies were obtained, of which 52 studies were selected for
    the evaluation of the full text on the basis of inclusion and exclusion criteria. Following
    this analysis, eight studies with a total of 739 participants (68% male and 32% female)
    were chosen and included in this integrative review. Participants in six research had
    an average age of more than 60 years. The most common type of cancer was lung
    cancer, followed by melanoma. The immunological toxicity of ICIs was observed in
    various body systems. Pharmaceutical care has been present in patient care through
    prescription-free medication recommendations, monitoring and management of
    toxicities, pharmaceutical consultations, patient guidance, caregivers, physicians, and
    multidisciplinary staff, as well as activities that helped to identify toxicities early and
    alleviate symptoms. The assessed studies included significant information that may
    aid in the creation of individualized pharmaceutical care for patients receiving ICIs for
    cancer treatment. However, there is still a limitation in the details of some information,
    signaling the need for more and more specific studies for this patient profile. Thus, it is
    concluded that pharmaceutical care in the context of oncological immunotherapy with
    ICIs can provide positive impacts both for health institutions, by reducing costs or
    minimizing waste, and, mainly, for patients, in the outcome of treatment and in
    improving the quality of life.

9
  • GISELE DA SILVA ROCHA
  • PROFILE OF USE OF POTENTIALLY INAPPROPRIATE MEDICINES AND POLYPHARMACY IN ELDERLY PEOPLE IN ALAGOA: AN EPIDEMIOLOGICAL SURVEY

  • Advisor : SABRINA JOANY FELIZARDO NEVES
  • COMMITTEE MEMBERS :
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • JOAO ARAUJO BARROS NETO
  • SABRINA JOANY FELIZARDO NEVES
  • Data: Mar 27, 2024


  • Show Abstract
  • Elderly people are vulnerable to the risks of using medications, especially those considered potentially inappropriate (PIM). The study aimed to determine the prevalence of the use of potentially inappropriate medications and polypharmacy in elderly people in Alagoas. This is an observational, analytical and descriptive, population-based, cross-sectional study with a sample of 1089 elderly people. These had a minimum age of 60 years and a maximum of 112 years, the average 72.04 (DP= 0.1). The majority of elderly people (65.5%) are female. Regarding ethnicity, the largest number of elderly people declared themselves to be mixed race (57.5%). The prevalence of comorbidities were Hypertension (67.1%), Cataracts (37.1%), Osteoporosis and Joint diseases (35.8%) and Diabetes (31.6%), cited by the elderly. The therapeutic classes most commonly identified as PIM were benzodiazepines 101 (9.3%), being Clonazepam (5.5%) and Diazepam (2.6%), sulfonylureas Glibenclamide (5.3%) and Glicazide (1. 2%) and antidepressant Amitriptyline (2.8%). It is necessary to understand the possible consequences of the use of potentially inappropriate medications among the elderly. It is important to give targeted attention to the elderly who are subject to polypharmacy and it is necessary to establish specific lists that include the most appropriate medicines for use in the elderly in the National List of Essential Medicines.

10
  • GABRIELLA LOMBARDI DE ALMEIDA SALES
  • PREVALENCE OF ANEMIA AND ASSOCIATED FACTORS IN ELDERLY PEOPLE IN ALAGOA: EVIDENCE FROM THE I ALAGOAN DIAGNOSIS ON HEALTH, NUTRITION AND QUALITY OF LIFE OF ELDERLY PEOPLE.


  • Advisor : SABRINA JOANY FELIZARDO NEVES
  • COMMITTEE MEMBERS :
  • ALFREDO DIAS DE OLIVEIRA FILHO
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • SABRINA JOANY FELIZARDO NEVES
  • Data: Mar 28, 2024


  • Show Abstract
  • Population aging is a reality all over the world, but specifically in Latin America this process has been happening more noticeably since the 60s/70s of the 20th century. In addition to the demographic issue, the aging process leads to an increase in chronic illnesses, as well as greater social and economic fragility. These aspects make elderly people more vulnerable to chronic diseases, deficiencies, hospitalizations and the use of polypharmacy. Anemia Anemia is defined by the World Health Organization (WHO) as the condition in which the hemoglobin content in the blood is below normal as a result of a lack of one or more essential nutrients. Therefore, this dissertation aims to determine the prevalence of anemia and associated factors in elderly people. This is an excerpt from the I Alagoan Diagnosis on Health, Nutrition and Quality of Life of the Elderly Population, a project arising from the PPSUS Notice. This is a cross-sectional study with a cluster sample in the state of Alagoas. The research was carried out at home and involved the application of sociodemographic, health and quality of life instruments in addition to anthropometic assessment, medication use and collection of samples for biochemical analyzes that consisted of Glycemia, Fasting Glycemia, Cholesterol, Triglycerides, Iron, Ferritin , Vitamin D among others. In this research we identified 65.5% of elderly women, and the average age of the sample was 72.0 (SD=9.1) years. A prevalence of hemolytic anemia of around 15% was identified, well above the national average, which is around 9%. 82.6% used some type of medication chronically, of these 19.74% used 5 or more medications concomitantly.

11
  • ALINA ALVES ALMEIDA LOPES
  • Comparative study between pharmacological screening of different fractions of Pereskia aculeata miller 
    and Alpinia zerumbet in spontaneously hypertensive rats
  • Advisor : EURICA ADELIA NOGUEIRA RIBEIRO
  • COMMITTEE MEMBERS :
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • SABRINA JOANY FELIZARDO NEVES
  • ALFREDO DIAS DE OLIVEIRA FILHO
  • Data: Mar 28, 2024


  • Show Abstract
  • Pereskia aculeata miller, known as “ora-pro-nobis”, is popularly used in traditional Brazilian medicine, however, its cardiovascular effects remain uncertain. And Alpina zerumbet, popularly known as “colônia” is already used in popular medicine as a treatment for hypertension, however there are no reports of its fractions on the cardiovascular system. Therefore, the objective of this work was to evaluate the cardiovascular effects induced by fractions of Pereskia aculeata miller (FPPTPa, FHPa and FDCMPa) and Alpina zerumbet (FAEFAz and FHAz) in spontaneously hypertensive rats (SHR), as well as comparing their phytochemical composition. To this end, protocols for direct measurement of blood pressure and heart rate were carried out in non-anesthetized SHR rats. In conscious SHR rats, the P. aculeata and A. zerumbet fractions promoted hypotension and bradycardia in all fractions, but in particular the reduction of heart rate in the P. aculeata fractions, in non-anesthetized SHR rats. It is concluded, therefore, that the fractions promote hypotensive and bradycardic effects in SHR rats.

     

     
     
     
     
     
     
12
  • CARLOS AMERICO LECHUGA PUMA
  • Synthesis, characterization, and photophysical studies of Europium Layered Hydroxides with Sb3+ ions a potential leishmanicidal effect

  • Advisor : CAMILA BRAGA DORNELAS
  • COMMITTEE MEMBERS :
  • CAMILA BRAGA DORNELAS
  • LUCAS MEILI
  • UESLEN ROCHA SILVA
  • Data: Apr 2, 2024


  • Show Abstract
  • This study reports the obtaining of mixed metal Eu3+/Sb3+ layered europium hydroxides (LEuH:x%Sb (with x ranging from 0 to 30%)) using the hydrothermal route. Our research reveals a detailed analysis of the chemical, structural, thermal, and morphological characteristics of this class of materials. The results revealed slight changes in the structure for antimony fractions greater than 20%, modification in thermal stability, and significant morphological modification due to the increase in the incorporation of Sb3+ into the LEuH-Cl host. Furthermore, we comprehensively investigated its photophysical properties, describing its unique luminescent characteristics. Additionally, results revealed increased luminescence of Eu3+ ions promoted by the energy transfer between Sb3+ →Eu3+. This study contributes valuable information on the structural, thermal and photophysical properties of layered hydroxide materials containing europium and antimony, offering insights into the design of functional materials of this class for use as efficient chemical sensors, catalysis systems, platforms for drug delivery and leishmaniasis therapy.

13
  • JOCEMIRLLA MARTA CORREIA DA SILVA
  • OBTAINING NANOPARTICLES BASED ON METAL-ORGANIC STRUCTURES (MOFS) WITH DAPSONE FOR TREATMENT OF LEPROSY.
  • Advisor : IRINALDO DINIZ BASILIO JUNIOR
  • COMMITTEE MEMBERS :
  • LUISE LOPES CHAVES
  • CAMILA BRAGA DORNELAS
  • IRINALDO DINIZ BASILIO JUNIOR
  • AMANDA DAMASCENO LEÃO
  • Data: Apr 4, 2024


  • Show Abstract
  • Leprosy is an endemic disease in some countries, including Brazil. The current treatment, polychemotherapy, can be complex and cause adverse effects.  Nanotechnology emerges as an alternative to improve the bioavailability of poorly soluble drugs, such as dapsone, used in the treatment of leprosy. Metal-organic structures, especially ZIF-8, are promising for the administration and controlled release of drugs. The objective of the work was to develop a nanostructured system based on ZIF-8 to load dapsone. The zeolitic imidazolate structure (ZIF-8) was synthesized at room temperature in an aqueous medium. DAP was loaded in situ into ZIF-8 nanoparticles during synthesis. Both ZIF-8 and DAP@ZIF-8 were characterized using various characterization tools. The structural integrity and phase purity of the DAP@ZIF-8 nanoparticles were obtained through the X-ray diffraction pattern corresponding to ZIF-8. TEM micrographs of pure ZIF-8 showed well-developed hexagonal nanocrystals and uniform distribution. The encapsulation of DAP in ZIF-8 resulted in a decrease in the average particle size and its zeta potential, preserving the hexagonal morphology. The encapsulation of DAP was confirmed by UV-Visible and FTIR spectroscopy studies, thus indicating the potential of ZIF-8 to be used as a carrier for controlled delivery of DAP. However, further investigations are necessary for the improvement of future applications using this system.

14
  • EMANUELLY CAROLYNE MARQUES DE FARIAS NANES
  • Development of new PCL/Propolis waste biomaterials – Use and valorization of beekeeping by-products

  • Advisor : CAMILA BRAGA DORNELAS
  • COMMITTEE MEMBERS :
  • CAMILA BRAGA DORNELAS
  • LIGIA MARIA MANZINE COSTA
  • LUISE LOPES CHAVES
  • MÁRCIA REGINA DE MOURA AOUADA
  • Data: Apr 19, 2024


  • Show Abstract
  • Extractive residues of natural origin are increasingly present in the development of bioplastics and improvements to already known polymers. The incorporation of active properties is an essential factor in the search for this waste, as they provide usefulness to a resource that is often discarded, offering financial profitability to the holders of this material, as disposal becomes an option. The main objective of this study was to produce membranes containing propolis extractive residue, red and green, at concentrations of 10, 25 and 50% in association with the Poly(ε-caprolactone) polymer. The method used for preparation was simple hot mixing with incorporation of the residue, followed by simple pressing. The residues were characterized by FTIR and HPLC. The membranes, in turn, were characterized by TG, SEM, FTIR, degradability and traction tests. As a result, it was noticed that the residues, according to FTIR and HPLC analyses, still contained relatively important compounds in the samples, such as many isoflavonoids with characteristics relevant in medicine. The membranes showed degradation peaks equivalent to the hours, days and weeks analyzed. The SEM result showed that, apparently, the membranes managed to be miscible, indicating some miscibility between the base polymer and the residues. The tensile test showed that although miscibility was effectively achieved in the production process, the membranes became less resistant compared to the Poly(ε-caprolactone) polymer alone. Thus, it was possible to prepare films containing PCL whose release of flavonoid compounds is facilitated, thus demonstrating the possibility of new applications, adding value to a residue from the propolis industry.

2023
Dissertations
1
  • ROSILEIDE ZEFERINO DA SILVA
  • Translation, Cross-Cultural Adaptation and Validation of the Brazilian Portuguese version of the General Medication Adherence Scale (GMAS) in patients with Systemic Arterial Hypertension.

  • Advisor : SABRINA JOANY FELIZARDO NEVES
  • COMMITTEE MEMBERS :
  • ALFREDO DIAS DE OLIVEIRA FILHO
  • FRANCISCO DE ASSIS COSTA
  • LUISE LOPES CHAVES
  • SABRINA JOANY FELIZARDO NEVES
  • Data: Feb 1, 2023


  • Show Abstract
  • Non-adherence to antihypertensive treatment has a negative impact on blood pressure control. There are several strategies to measure adherence to antihypertensive drug treatment, classified as direct and indirect methods. Direct methods are performed through biological analysis (blood or urine). However, they are high-cost alternatives and only available in research environments. In the indirect methods, self-report scales stand out, which are a safe and cost-effective option, as they are simple, low-cost, applicable in various environments and provide immediate feedback, therefore being easy to incorporate into the daily clinical practice. However, to be widely used, an adherence rating scale must be tested and validated, in addition to being available for use at no additional cost. Given the above, the objective of the present study was to validate the General Medication Adherence Scale (GMAS) into Brazilian Portuguese in patients with Systemic Arterial Hypertension. Therefore, this research was carried out in two phases. At first, the cross-cultural validation process of the GMAS instrument from English to Brazilian Portuguese was carried out. This process involved the stages of translation, cross-cultural adaptation and validation and used the methodology described by Beaton et al. In the second phase, a cross-sectional study was carried out in the cardiology sector of hospitals, public and private, in Maceió (AL, Brazil), through the application of the instrument through structured interviews to patients diagnosed with hypertension. In this step, the following analyzes were performed: internal consistency through reliability and test-retest; intraclass correlation coefficients; and Pearson's correlation coefficient to assess content validity. The assessment of convergent validity was performed using the Brief Medication Questionnaire (BMQ) scale. In addition, measurements of blood pressure, measurements of anthropometric parameters and 24-hour ABPM Examination were carried out. Translation and cross-cultural validation generated a Portuguese version of the GMAS scale that was applied to 123 patients. As for the sample, most patients were female (67.5%), and the mean age was 58.47 ± 11.8 years. The scale's internal consistency was 0.75, and its reproducibility could be measured by test-retest, performed using Spearman's correlation (0.761; p<0.001). As for convergent validity, when comparing GMAS and BMQ, they obtained a degree of 77.6% for adherent behavior (p < 0.05). Finally, the discriminant validity was evaluated according to criteria established by the author of the original version of the scale and a relationship between age and adherence was identified, with non-adherent behavior being more frequent among patients considered younger (<45 years) (p <0. 05). The constructs evaluated for adherence were behavior (n=90.73.2%), treatment (n=103, 83.7%) and cost (n=81.65.9%). In view of this, the Brazilian Portuguese version of the GMAS is a valid and reliable tool to measure adherence in patients with hypertension.


     
2
  • JOAO VICTOR LESSA DE OLIVEIRA
  • INVESTIGATION OF THE CHEMICAL COMPOSITION AND EVALUATION OF THE ANTIBACTERIAL POTENTIAL OF BROWN PROPOLIS EXTRACT FROM THE REGION OF UNIÃO DOS PALMARES, ALAGOAS

  • Advisor : TICIANO GOMES DO NASCIMENTO
  • COMMITTEE MEMBERS :
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • JOHNNATAN DUARTE DE FREITAS
  • JOSE RUI MACHADO REYS
  • TICIANO GOMES DO NASCIMENTO
  • VANDERSON BARBOSA BERNARDO
  • Data: Mar 22, 2023


  • Show Abstract
  • The brown and red type propolis from the mangrove region of Alagoas are evidenced in Alagoas, being the red propolis, of defined botanical origin. The study of the chemical composition of brown propolis from the region of União dos Palmares has been the subject of this study. The study of the chemical composition is being carried out through different analytical techniques and analytical methods such as fingerprint studies (fingerprint) and possible botanical origin using HPLC-DAD-UV, LC-Orbitrap-FTMS techniques, chemical assays of total flavonoids and activity antioxidant, as well as microbiological assay of Minimum Inhibitory Concentration. The research consisted of collecting brown propolis from the municipality of União dos Palmares (PMUP) for extraction from September 2019 to August 2021. An amount between 38 and 91g of in natura sample was collected from apiaries close to the municipality of União dos Palmares. The extraction method chosen for PMUP was maceration, in two cycles of 48 hours, using 15 g of PMUP and, for each cycle, 50 ml of hydroethanolic solution at 92.8 ºGL. The extracts were pooled and concentrated to obtain a crude solvent-free extract. Crude extracts 5 (January/2021) and 12 (July/2021) were stored in a freezer until the moment of total flavonoids, antioxidant activity by DPPH, microbiological assays and chromatographic profile assay. A brown propolis key marker isolation study was performed with a brown propolis sample from October 2019 that was subjected to partitioning using liquid-liquid extraction to obtain hexane, hexane-ethyl acetate (9:1), hexane-ethyl acetate (7 :3) and dichloromethane fraction. The dichloromethane phase was subjected to column chromatography on cellulose as a solid support and Methanol:H2O acidified with acetic acid (1%) to obtain fractions between 0% methanol and 100% methanol. The MeOH10%, MeOH20%, MeOH30% and MeOH45% fractions were submitted to semi-preparative HPLC-UV for the isolation of 2 main markers (pk35; pinocembrin) and (pk23; naringenin in mixture with naringenin) of brown propolis (PMUP) that were identified by LC-Orbitrap-FTMS and NMR 1H and 13C. The phenolic compounds identified by the LC-MS technique based on comparison with data from the literature were divided into benzoic acids, cinnamic acids (caffeic acid, ferulic acid), chlorogenic acid, prenylated cinnamic acids (dupranin and artepillin C), stilbene (resveratrol), coumarins and flavonoids divided into flavanonols, flavonones, flavones, flavonols, flavana-3-ol, flavana-4-ol and chalcones. Crude PMUP extracts showed total flavonoid content of 0.5 to 2% based on the quercetin pattern and high antioxidant activity with DPPH free radical scavenging percentage between 80 and 90%. The microbiological assay using Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, Candida albicans, Trichophyton mentagrophytes and Microsporum canis strains showed MIC between 32 and 1024 µg/mL for MEOH20% fraction and MIC between 16 and 256 µg/mL for MEOH35% fraction.

     

     
3
  • ARIANA DA SILVA SANTOS
  • PHYTOCHEMICAL AND ANTIOXIDANT CHARACTERIZATION OF HYDROALCOHOLIC EXTRACTS OF Moringa oleifera Lam AT DIFFERENT COLLECTION TIMES

     
  • Advisor : TICIANO GOMES DO NASCIMENTO
  • COMMITTEE MEMBERS :
  • JOHNNATAN DUARTE DE FREITAS
  • JOSE ROBERTO DE OLIVEIRA FERREIRA
  • MARIA ALINE BARROS FIDELIS DE MOURA
  • Salvana Priscylla Manso Costa
  • TICIANO GOMES DO NASCIMENTO
  • Data: Mar 24, 2023


  • Show Abstract
  •  

     

    Moringa oleifera Lam is a tree vegetable, belonging to the moringaceae family, of Indian origin, cultivated mainly in places with dry tropical climates in various regions of the world. Due to its bioactivity, it has gained enormous attention in the last decade, which has led to increased exploration and understanding of its pharmacological functions and underlying mechanisms. The aim of this study was to characterize phenolic phytochemical compounds and antioxidant activity of hydroalcoholic extracts of Moringa oleifera Lam at different collection times. The collection of samples (powder and tea) was carried out at the Centro de Ciências Agrárias (CECA) from the Federal University of Alagoas (UFAL) in Rio Largo-AL (samples 2019) and in the village Sítio Salão in the municipality of Inhapi-AL. The samples were submitted to hydroalcoholic extraction. The methodology adopted includes Antioxidant activity (DPPH), determination of total flavonoids content (AlCl3), determination of total phenols (Folin-Ciocauteal), analysis of HPLC-DAD and LC-Orbitrap_ESI-FTMS. The DPPH radical scavenging capacity assay of the 2019 Powder samples showed good results with high antioxidant capacity for MO50% extract (>85%), followed by MO40% extract (>62%), MO30% extract (30.42%) and extract MO20% (21.33%), also being noticeable that the antioxidant capacity was concentration dependent. Samples of MO powder extracts collected in 2021 showed that extracts collected in June, July and August using a high percentage of alcohol (50% and 75%) during the extractive process showed an IC50 result of less than 50 µg/mL. The MO tea samples collected in 2021 consolidated the study of antioxidant activity, showing that hydroalcoholic extracts with a lower percentage of alcohol (MO25% tea extract) had lower antioxidant activity than the extracts with a higher percentage of alcohol used in the extraction (MO50% tea and MO75% tea). The MO powder samples showed higher antioxidant capacity than the MO tea samples. The MO powder samples exhibited significant total flavonoid contents between 1.14% and 2.35%, highlighting the months of June powder 50% with 2.35% and August powder 75% with 2.00%, 1, 14% August powder 50%, while the months of January and February showed values between 0.67% and 0.98% of total flavonoids, respectively.The analysis of the total phenol content showed a high content in the months of intense sunlight with values of 13.39% and 8.38% for the months of January and February, respectively; while the rainy months (June, July and August) showed minimal variation with values between 5.39% (July) and 5.78% (June). The LCMS assay using the analytical standards method identified the presence of acid flavonoids caffeic acid, 2-coumaric acid, umbelliferone, p-coumaric acid, vitexin, rutin, quercetin, kaempferol, luteolin, apigenin, pinocembrin at high intensities in samples of moringa extract February and July 75% powder. The LC-MS assay also detected the presence of isoquercitrin, quercetin 3-O-malonylglucoside (m/z 550.0927), kaempferol 3-O-(6´´-malonylglucoside) (m/z 489.1493) and kaempferol 3-O-glucoside (m/z 447.2616) known as astragalin based on scientific literature data. In general, the antioxidant activity and flavonoid content of MO powder extracts increased in the months of heavy rainfall (June, July and August), decreasing significantly in the months with low rainfall. While the total phenol content was higher in the months of intense sunshine and lower in the rainy months. The LC-MS data corroborate this information with lower values for ferulic acid and caffeic acid (February sample) and higher values for flavonoids (vitexin, rutin, quercetin, kaempferol, luteolin) in the July sample.

     

     
4
  • MARIA LUIZA DAL PONT MACHADO
  • Hepatoprotective effect of alpha-terpineol in rats with isoproterenol-induced metabolic syndrome
  • Advisor : EURICA ADELIA NOGUEIRA RIBEIRO
  • COMMITTEE MEMBERS :
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • TICIANO GOMES DO NASCIMENTO
  • CAMILLA CAMERINO SANTANA
  • Data: Mar 27, 2023


  • Show Abstract
  • Introduction: The α- terpineol (TPN) is a monoterpene obtained from Protium hepthaphylum. That has several pharmacological activities such as: anti-inflammatory, anti-obesity and cardioprotection on Spontaneously Hypertensive Rats (SHR) by isoproterenol model. ISO evoked metabolic disturbance on hepatocytes, stimulate fatty acids storage on vesicles inducing non-alcoholic steatosis. The aims of this study were verify the hepatoprotective effects of TPN in SHR against liver damage induced by ISO. Methods: Experimental protocols were approved by the CEUA/UFAL nº09/2015. Male rats were allocated into 5 groups and treated for 15 days (n=5): (G1= saline 0.9% P.O/d); (G2= Infarcted saline 0.9% P.O./d + ISO 85mg/kg 2x s.c); (G3= TPN 25 mg/kg P.O./d); (G4=TPN 50 mg/kg P.O./d) and (G5=TPN 75 mg/kg P.O./d). On 16º day, rats were anesthetized (Ketamine 80 mg/kg + Xylazine 4 mg/kg i.p.) and morphometric tests were performed in accordance with Scherle´s methods. Morphology tests were examined under light by stereoscopy, while lipid levels were estimated by total cholesterol and triglyceride dosages of blood serum. The results were expressed as mean ± SEM, and analyzed statistically by ANOVA one-way followed by Newman- Keuls test considered significant when * p <0.05, ** p<0.001 and *** p< 0.0001. Results: Weight of the liver (G1= 6.92 ± 0.22g/g* vs. G2= 8.67 ± 0.3g/g), (G4= 6.40 ± 0.36g/g* vs. G2= 8.67 ± 0.31g/g), (G5= 5.22 ± 0.7g/g*** vs. G2= 8.67 ± 0.31g/g) and (G3= 7.44 ± 0.6g/g vs. G5= 5.22 ± 0.7g/g), reason liver weight by body weight (G3=1.86 ± 0.05g/g* vs. G4= 2.44 ± 0.16g/g), (G3=1.86 ± 0.05g/g** vs G5= 2.64 ± 0.23g/g), (G4= 2.44 ± 0.16g/g *vs. G2= 1.68 ± 0.05g/g) and (G5= 2.64 ± 0.23g/g** vs. G2= 1.68 ± 0.05g/g) and reason liver weight by femur weight (G1= 65.7± 9.24g/g**** vs. G2= 547.4 ± 7.15g/g), (G3= 834.4 ± 9.51g/g**** vs. G2= 547.4 ± 7.15g/g Through morphological and histopathological aspects, it was observed that TPN inhibited non-alcoholic hepatic steatosis due to damage caused by induction with isoproterenol, in addition, previous treatment with TPN significantly inhibited the increase in total cholesterol levels (G1= 21,5 ± 1,0 vs. G2= 68,1 ± 1,2****), (G2= 68,1 ± 1,2****vs. G3 = 20,7 ± 1,3****), (G2= 68,1 ± 1,2**** vs. G4 = 22,6± 1,5****) and (G2= 68,1 ± 1,2****vs G5= 22,3 ± 4,6 ****) and triglyceride G1= 23,4 ± 1,6 vs. G2= 353,4 ± 23,3 ****), (G2= 353,4 ± 23,3 vs. G3 = 28,9 ± 2,8****), (G2= 353,4 ± 23,3 vs. G4 = 27,5± 1,7****) and (G2= 353,4 ± 23,3 vs G5= 16,2 ± 1,5 ****), levels at all doses tested. In addition, after the glucose tolerance curve, it was noted that there was a reversal in this curve, which may also influence glucose metabolism, however further studies are needed. Conclusion: Taken together, the results indicate that TPN has a significant hepatoprotective effect, in hypertensive and infarcted rats.

5
  • LAISA CAROLINA GOMES DE BULHOES
  • Development and characterization of alginate globules loaded with essential oil of Syzygium aromaticum (clove) obtained by the ionic gelation technique and evaluation of antioxidant activity

  • Advisor : IRINALDO DINIZ BASILIO JUNIOR
  • COMMITTEE MEMBERS :
  • IRINALDO DINIZ BASILIO JUNIOR
  • TICIANO GOMES DO NASCIMENTO
  • JOSE RUI MACHADO REYS
  • Data: Mar 29, 2023


  • Show Abstract
  • Essential oils are complex substances that have in their composition several constituents that give these oils biological activities. The clove (Syzygium aromaticum) is an arboreal plant of the Myrtaceae family that has been used in medicine since ancient times, possessing an antioxidant, anesthetic, insecticidal and antimicrobial activity. The encapsulation technique by ionic gelation consists of producing spheres by electrostatic interactions between ionic polymers and ions with different charges, in order to form a three-dimensional network, for the entrapment of the active compound. In this context, the objective of this work was to develop alginate globules loaded with clove essential oil through the ionic gelation technique, identify and quantify the main marker of clove essential oil, quantify the total phenols and evaluate the antioxidant potential and thermally characterize the alginate globules carried with clove essential oil. The globules were obtained by the ionic gelation technique. Essential oil and globules were evaluated for antioxidant activity by DPPH methods. Quantification of total phenols was performed using the Folin-Ciocalteau method. Identification and quantification of the main oil marker were performed by GC-MS. The thermogravimetric stabilities of the globules were evaluated by TGA and DSC. Contents of 1190.66, 714.84 and 433.43 mg EAG g-1 of total phenolic compounds were found in the essential oil and globules of 1% and 2% alginate, respectively. The DPPH antioxidant method showed high activities where in the EO the percentage was from 28.16% to 80.27% and in the 1% alginate globules 12.90% to 59.36%, 2% alginate globules 11, 19% to 31.79%. Eugenol was the major compound in the essential oil with a content of 83.73. The encapsulation efficiency was 7.12% in the 1% alginate formulation and 10.22% in the 2% alginate formulation. The globules presented a translucent appearance, while those with the oil presented an opaque color, closer to white. Thermal analysis showed good stability for the globules. The ionic gelation process was successful, providing greater thermal stability to the clove essential oil, maintaining its biological properties.

     

     
6
  • SAULO VITOR SILVA
  • COMPATIBILITY AND THERMAL STABILITY STUDY OF RED PROPOLIS ASSOCIATED WITH DIFFERENT EXCIPIENTS IN OBTAINING POLYMERIC MEMBRANES


     
  • Advisor : IRINALDO DINIZ BASILIO JUNIOR
  • COMMITTEE MEMBERS :
  • IRINALDO DINIZ BASILIO JUNIOR
  • JOSE RUI MACHADO REYS
  • TICIANO GOMES DO NASCIMENTO
  • Data: Mar 29, 2023


  • Show Abstract
  • Red propolis from Alagoas is a sticky resin made from a complex mixture of biologically active substances with great biotechnological potential. Various studies have shown that red propolis extracts have a wide variety of biological activities as an antioxidant. Drug-excipient compatibility testing is one of the most fundamental phases in the pre-formulation research process. Given the above, this research aims to evaluate compatibility and thermal stability of red propolis associated with different excipients in obtaining polymeric membranes. The ethanolic extract of red propolis by maceration. Assays were carried out to quantify the content of phenolic compounds, using the Folin-Ciocalteu reagent method, and flavonoids, using the aluminum chloride method of the EEPV. The investigation of the antioxidant activity of EEPV was carried out using the DPPH method. Synthetic membranes were prepared using the solvent evaporation method. And the physical-chemical properties of thermal stability of membranes, components, and binary mixtures were analyzed by Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetric Analysis (DSC). It was estimated that the content of total phenolic compounds was 208.0 mg EAG.g-1, and the total flavonoid content was 45.3 mg EAG.g-1. The analysis of the antioxidant activities of EEPV by the DPPH method varied between 59.36% and 88.31%. The thermal profile obtained by the EEPV TGA showed 4 thermal degradation events, none of which were superimposed. The second event (onset: 82.01 °C, endset: 135.29 °C and mass loss of 12.83%). Thermogravimetric thermal analyzes (TGA) showed sodium benzoate as the most stable excipient. Second curve (onset: 514.77 °C, endset: 562.11 °C and mass loss of 44.79%). Propylene glycol was the least stable excipient. Its second thermal event (onset: 117.43 °C, endset: 147.35 °C and 82.57% mass loss). Membranes and binary mixtures were successfully obtained and presented a uniform appearance. The MX1 membrane presented 7 thermal degradation events, with the 1st overlapping with the 2nd, the 3rd with the 4th, and the 6th with the 7th. The second thermal event (onset: 54.75 °C, endset: 104.48 °C and mass loss of 15.88%). The EEPV decomposition curve by DSC showed two thermal events. The first transition process was endothermic (onset: 153.32 °C; endset: 364.35 °C; peak: 346.48 °C; enthalpy: -152.62 J/g). The EEPV + sodium benzoate binary mixture curve showed 6 thermal events. The first event was endothermic (onset: 35.12 °C; endset: 79.85 °C; peak: 61.38 °C; enthalpy: -36.04 J/g). The MX1 decomposition curve by DSC showed 4 transition processes. The first and third being endothermic, and the second and fourth exothermic. The first (onset: 126.49 °C, endset at 136.09, and enthalpy: -21.53 J/g). Thus, the red propolis ethanolic extract showed good thermal stability. And, among the excipients, sodium benzoate was the most thermally stable. In contrast, propylene glycol was the excipient with the lowest thermal stability. And all excipients were compatible with red propolis ethanolic extract. All membranes were successfully obtained, however thermogravimetric analysis (TGA) determined that MX1 has better thermal stability.

7
  • ERIKA ELITA ARAUJO LESSA
  • Analysis of sleep-related problems and their association with medication adherence: the importance of pharmaceutical care in patients with chronic kidney disease.




  • Advisor : ELIANE APARECIDA CAMPESATTO
  • COMMITTEE MEMBERS :
  • ELIANE APARECIDA CAMPESATTO
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • JOSE RUI MACHADO REYS
  • Data: Mar 30, 2023


  • Show Abstract
  • Chronic kidney disease (CKD) is considered a global public health problem, especially in low- and middle-income countries, as they are less prepared to deal with the prevention, treatment and progression of CKD. Early detection of CKD and therapeutic follow-up of patients with hypertension and diabetes are necessary to reduce morbidity and mortality. Stage 3 and advanced stages 4 and 5 of CKD were associated with 2.2 million deaths in the global population, more than half of which were from cardiovascular disease, while 0.96 million deaths were related to end-stage renal disease. Furthermore, risks increase when prescribed medications are not adhered to. Patients undergo hemodialysis three times a week, starting early in the morning, and there may be chronic changes in sleep schedules due to waking up early or sleeping late. In the literature, the prevalence of sleep disorders and poor medication adherence in patients with CKD are well evidenced, but there are few studies on whether sleep-related problems are associated with poor medication adherence. In addition, until the time of the study, there were no reports in the literature on the identification of circadian chronotype and occurrence of social jetlag in hemodialysis patients. In view of this, the study aims to analyze the behavior of circadian preference and sleep-related problems if they are associated with therapeutic adherence in patients on hemodialysis. A cross-sectional study was carried out with 108 patients with CKD undergoing hemodialysis treatment in three hospitals in Maceió from June to November 2022. Data collection was performed through interviews with the patient using the following validated questionnaires: Pittsburgh Sleep Quality – PSQI, EPWORTH Daytime Sleepiness Scale, Chalder Fatigue Scale, Morisky Therapeutic Adherence Scale (MMAS-8), Obstructive Sleep Apnea Risk Factor Questionnaire – STOP-Bang, Morningness Eveningness Questionnaire – MEQ and Munich Chronotype Questionnaire - MCQT. Questions about health conditions, life habits, sociodemographic data and continuous use medication were also addressed. The main results obtained, patients had a morning circadian preference (56.5%), among the concomitant diseases, hypertension was the most frequent (60.2%), patients used cell phones before going to sleep (61.1%) and 13% exceeded cell phone use for more than 2 hours. Short sleep duration was observed in patients, 62.9% had a sleep duration < 6 hours, poor sleep quality (81.5%), high-risk prevalence of obstructive sleep apnea syndrome (64.8% ), low adherence to medication (72.2%) and occurrence of social jetlag in patients for more than 1 hour (56.5%). The associations were significant between daytime sleepiness, fatigue and chronotype with therapeutic adherence. Therefore, the results indicate worrisome problems that can lead to complications in comorbidities and worsen the prognosis. Clinical trials reinforce the importance for future studies to determine the best method or combination of different methods to manage medication adherence and integrate pharmaceutical care into patients' daily routine.

8
  • ANDERSON LOPES PIMENTEL
  • Use of Medications and Psychoactive Substances by UFAL Students During the COVID-19 Pandemic
    .

  • Advisor : MARIA ALINE BARROS FIDELIS DE MOURA
  • COMMITTEE MEMBERS :
  • JOSE RUI MACHADO REYS
  • MARIA ALINE BARROS FIDELIS DE MOURA
  • TICIANO GOMES DO NASCIMENTO
  • Data: Mar 30, 2023


  • Show Abstract
  • Use of medicines and psychoactive substances by UFAL students during the COVID-19 pandemic
    The Pandemic caused by SARS-CoV-2 is considered the biggest public health problem faced by humanity in this century. It has been responsible for causing important changes in lifestyle, in interpersonal relationships, resulting in an increase in domestic violence, traffic accidents, unemployment, psychological problems, changes in the undue and indiscriminate consumption of licit and illicit drugs, and medication, reduction quality of life and well-being, as well as reduced productivity and schooling. Students make up a segment of the population with considerable vulnerability to the use of psychoactive substances. This topic is the subject of research, as the consumption of psychoactive substances can impact the student's academic and personal life. The objective of the study is to determine the profile of students at the Federal University of Alagoas, within the scope of Psychosocial Toxicology, regarding the use and local pattern of use of psychoactive substances (licit, illicit and medicines), considering the pandemic caused by the new coronavirus. This is a descriptive quantitative study. For the elaboration of the research, the screening instruments, AUDIT and ASSIST, were used, aimed at undergraduates, which allowed the remote application of a questionnaire. Statistical analysis was performed using the EpiInfo 7 program. Univariate analysis was performed to describe quantitative variables related to the social and educational profile. Bivariate analysis to identify the association between psychoactive substances and social and educational variables, with the chi-square test and 5% significance. 256 responses were obtained. As for the AUDIT, 68.01% of the students reported consuming alcohol, with 6.64% presenting behavior suggestive of abuse. Of those surveyed, 14.69% reported not being able to stop drinking once they started. Changes in behavior, feelings of guilt, and inability to remember facts when drinking were observed, in addition to a trend towards increased alcohol use in both sexes during the pandemic. The ASSIST pointed to an increasing trend in the use of tobacco, alcohol and marijuana derivatives, in addition to the report of significant consumption of antidepressants and anxiolytics. The use of cocaine/crack, amphetamines, inhalants, sedatives and hallucinogens was also reported. A relationship was identified between exact sciences courses and increased use of tobacco derivatives [(18.87%) p=0.0391], marijuana [(20.75%) p=0.0066], anxiolytics [ (13.21%) p=0.9946], from the human area and increased consumption of hypnotics/sedatives [(11.58%) p=0.0202] and anti-adhesive drugs [(18.95%) p=0 .0489]. Thus, the research pointed to a diversification in the use of psychoactive substances among university students and the contribution to outline a consumption profile in order to support the elaboration of internal policies aimed at undergraduates regarding the confrontation of the use of these substances in the academic environment.

     
9
  • MAIRLA DOS SANTOS RODRIGUES
  • Blood Pressure Control and Associated Factors among Patients with Hypertension and Associated Factors in the Context of the Covid-19 Pandemic.

  • Advisor : SABRINA JOANY FELIZARDO NEVES
  • COMMITTEE MEMBERS :
  • MARIA ALINE BARROS FIDELIS DE MOURA
  • SABRINA JOANY FELIZARDO NEVES
  • VALTER ALVINO DA SILVA
  • Data: Mar 31, 2023


  • Show Abstract
  • Introduction: Hypertension is one of the most prevalent chronic diseases in Brazil and in the world and has been one of the underlying comorbidities most related to death from cardiovascular causes. In the context of the Covid-19 pandemic, it has been observed that these patients are at greater risk of developing severe infections and post-covid sequelae, as well as a worse prognosis for their underlying disease. In this way, it is necessary to understand how covid-19 has impacted the health of patients with hypertension. Objective: To assess the prevalence of blood pressure control and associated factors among patients with systemic arterial hypertension (SAH) in the context of the covid-19 pandemic. Methods: Cross-sectional study nested within a retrospective cohort study carried out in outpatient cardiology services in hospitals in Maceió. A total of 110 patients with SAH undergoing drug treatment were included. In order to obtain the data, questionnaires were applied through face-to-face interviews and analysis of the medical prescription, as well as measurement of physiological measures such as blood pressure, weight and height. To verify therapeutic adherence to antihypertensive medication, the Brief Medication Questionnaire (BMQ) scale was applied. Results: The mean age was 58.2 years (SD= 11.3) with a predominance of females 68.2%. As for treatment for SAH, 43.64% were on dual therapy and the average number of medications per patient was 2.14. Only 32 (29.1%) participants had blood pressure control, contradictorily 67.3% had good adherence to the SAH treatment. Mean systolic blood pressure was 138.05 mmHg (SD=19.9) and mean diastolic blood pressure was 81.20 mmHg (SD=11.6). The prevalence of covid-19 among hypertensive patients was 37.3% (n=41) of these 39 underwent treatment for covid, however, only 25 reported remembering the medications, 69 reported drugs, with an average of 2.76 medications per respondent . On the other hand, 35.5% (n=39) of patients self-medicated as a means of preventing covid-19, a total of 50 medications were mentioned, with an average of 1.28 medications per patient. Of which ivermectin was the most prevalent 42%. Post-covid sequelae had a frequency of 58.5% (n=24) in the group that reported having covid-19 (n=41), the most related health problem after infection was fatigue with 37.5% (n=9) in this subset. Conclusion: The low prevalence of covid-19 among respondents was possibly limited due to survivor bias. For this group, having had covid-19 was not related to a worse clinical situation of the underlying disease (SAH), factors associated with non-control of SAH were BMI measurements of male abdominal circumference.



10
  • HILDA CAROLINE DO NASCIMENTO SANTOS
  • Production and evaluation of the leishmanicidal activity of extracts from fungi isolated from Antarctica and technological prospecting of fungal metabolites

     
  • Advisor : MAGNA SUZANA ALEXANDRE MOREIRA
  • COMMITTEE MEMBERS :
  • ALINE CAVALCANTI DE QUEIROZ
  • MAGNA SUZANA ALEXANDRE MOREIRA
  • ALYSSON WAGNER FERNANDES DUARTE
  • AMANDA EVELYN DA SILVA
  • Data: Aug 18, 2023


  • Show Abstract
  • Leishmaniasis is a neglected, infectious, and non-contagious disease caused by parasites of the genus Leishmania. Leishmania has two evolutionary forms, promastigote and amastigote, and two main clinical manifestations: cutaneous and visceral, with the latter being of greater concern as it can lead to the patient's death if untreated. Despite the complexity of the disease, the therapeutic arsenal remains limited, with pentavalent antimonials being the first choice and drugs like amphotericin B and pentamidine as the second choice. However, this therapy presents undesirable adverse effects, along with significant cytotoxicity and parasitic resistance. In light of this issue, the present study evaluated extracts from fungus producing secondary metabolites from Antarctica, and also conducted a patent review regarding the leishmanicidal activity of fungal metabolites. In the experimental study, the biomass of these fungi was produced, followed by solvent extraction using ethyl acetate and acetone, pigment concentration, drying, dilution, cell viability tests (MTT), and evaluation of leishmanicidal activity against the promastigote form of L. amazonensis and L. chagasi. Yeast extracts (19L15, 4L2, 2L19, NL1, and GL19) and filamentous fungus extracts (4FFLQ2, 5YP4, 2FFLQ6 acetate, 2FFLQ6 acetone, 1EMP1, 3EMP4, and 2EMP4) were produced and tested at concentrations of 100, 30, 10, 3, 1, and 0.3 µg/mL. In the cell viability assay, the maximum cytotoxic effect found for yeast extracts was 40.54 ± 3.37%; 24.37 ± 3.66%; 29.09 ± 3.57%; 6.28 ± 1.00%; 22.98 ± 1.63%, respectively. The cytotoxic effect of filamentous fungi was: 60.53 ± 2.50%; 67.33 ± 1.51%; 19.68 ± 6.62%; 19.68 ± 6.62%; 23.38 ± 7.16%; 17.30 ± 10.59%; 29.08 ± 18.80%, and NA. In the assay to evaluate leishmanicidal activity, the tested yeast extracts (for both species) and filamentous fungus extracts (for L. chagasi) were not lethal to the parasites even at the maximum tested concentration of 100 µg/mL. The extracts 2FFLQ6 acetate and 2FFLQ6 acetone exhibited a maximum effect of 74.36 ± 4.10% and 84.62 ± 5.32% against the L. amazonensis species, suggesting the need for further studies in this area. In the patent review, four patents were selected, which demonstrated activity against L. major, L. amazonensis, and L. donovani species, along with low toxicity. Despite the results, the subject is still underexplored by the academic community, and the continuation and encouragement of bioprospecting research using fungal isolates and extracts is warranted.

11
  • CLARA ANDREZZA CRISOSTOMO BEZERRA COSTA
  • DETERMINATION OF THERMAL STABILITY AND DEGRADATION OF ACRYLAMIDES LQM330, LQM333, LQM336 AND LQM338 ACTIVE AGAINST CHIKV VIRUS
     
  • Advisor : EDEILDO FERREIRA DA SILVA JUNIOR
  • COMMITTEE MEMBERS :
  • EDEILDO FERREIRA DA SILVA JUNIOR
  • TICIANO GOMES DO NASCIMENTO
  • ALAN JOHN DUARTE DE FREITAS
  • JOHNNATAN DUARTE DE FREITAS
  • Data: Aug 21, 2023


  • Show Abstract
  • The characterization of solids for the development of pharmaceuticals and medicines is essential to ensure the processing, transport, and storage of final products. Acrylamides are organic substances, some of which are active against Dengue (DENV) and Zika (ZIKV) viruses, showing significant biological action and low toxicity in human cells. In recent decades, it has been noted a growing number of cases of pests infection by chikungunya (CHIKV), this disease, is quite neglected, with the absence of vaccination and treatments. The study and characterization of active molecules are of great importance for therapeutic alternatives still unknown or little explored. Thus, characterization by thermal analysis and complementary analytical techniques for solids are essential tools for the development of new drugs, as they provide data on the thermal behavior and chemical structure of materials. The work aimed to determine the thermal stability and degradation of the microstructures of acrylamides LQM330, 333, 336, and 338 active against the virus CHIKV. The characterization of the molecules was carried out by thermogravimetry (TG), Differential Scanning Calorimetry (DSC), Spectrophotometry in the Ultraviolet and Visible Region (UV-vis) It in the infrared region with Fourier transform (IRTF), Gas chromatography coupled to mass spectrometry (GC/IN), High-Performance Liquid Chromatography (HPLC) It is Scanning electron microscopy (SEM). The obtained results showed that LQM330 molecules, 333, 336, and 338 showed GC/MS and HPLC purities in the range of 92.50 to 99.55 and from 99.81 to 98.88%. The TG curves demonstrated that the molecules are stable at indifferent heating rates (10,20,30,40, and 50 ºC/min). Thermal decomposition profiles are very similar among acrylamides, with the presence of an endothermic event, except for sample LQM330 that presented exothermic events by DSC, this technique also provided data on the purity of the molecules in the range of 96.31% to 98.82%. The UV-vis spectra evidenced that the speak maximums of absorption for around 220 to 335 nm. Already the IR spectra TF demonstrated the presence of C=O stretching and NH stretching. The samples showed morphology heterogeneous, brittle with clusters in general, except for samples at T600 C that expose Forms of whole and homogeneous cubes, results verified by SEM. Soon, the good thermal stability of the molecules confirmed that they are promising candidates for the development of future drugs against the virus CHIKV and, that characterization by thermal analysis and complementary analytical techniques provided specific and crucial data for the advancement of the pharmaceutical sector.

     

     
12
  • FABIO SOUZA MOURA
  • Technological Prospecting and Evaluation of the Leishmanicidal Potential of Pyroligneous Extracts.

  • Advisor : ALINE CAVALCANTI DE QUEIROZ
  • COMMITTEE MEMBERS :
  • ALINE CAVALCANTI DE QUEIROZ
  • TICIANO GOMES DO NASCIMENTO
  • CAMILA CALADO DE VASCONCELOS
  • AMANDA EVELYN DA SILVA
  • Data: Aug 29, 2023


  • Show Abstract
  • Leishmaniasis is still one of the most neglected diseases in the world, affecting millions of people mainly in poor and underdeveloped countries. In Brazil, leishmaniasis is a public health problem due to its ease of propagation and ability to cause epidemics. Given this scenario, pyroligneous extracts have drawn the attention of many researchers, given that their processing can contribute to the development of chemical entities with pharmacological potential. In the Technological Prospecting carried out, it was possible to observe the
    formulation of innovations using pyroligneous extracts for therapeutic purposes and the application of these extracts in the treatment of pathologies such as cancer. The exercise of technological prospection is fundamental to guide the development of new technologies. In the experimental study, seven extracts from plants typical of the Brazilian flora were tested. All extracts showed leishmanicidal effects for the evolutionary form of promastigote amazonensis (100% ± 0.00) with IC 50 ranging from 0.01% (Mimosa tenuiflora) to 0.26%
    (Eucalyptus), however, they showed cytotoxic effects in the order of 95.13% (Pennisetum purpureum) for macrophages of the J774.A1 strain in the MTT assay. The results obtained in the pharmacological tests associated with those presented in the Technological Prospecting indicate that studies need to be implemented in order to standardize an extraction method, thus favoring the obtainment of compounds with pharmacological
    properties.


13
  • FABIO SOUZA MOURA
  • Technological Prospecting and Evaluation of the Leishmanicidal Potential of Pyroligneous Extracts.

  • Advisor : ALINE CAVALCANTI DE QUEIROZ
  • COMMITTEE MEMBERS :
  • ALINE CAVALCANTI DE QUEIROZ
  • AMANDA EVELYN DA SILVA
  • CAMILA CALADO DE VASCONCELOS
  • TICIANO GOMES DO NASCIMENTO
  • Data: Aug 29, 2023


  • Show Abstract
  • Leishmaniasis is still one of the most neglected diseases in the world, affecting millions of people mainly in poor and underdeveloped countries. In Brazil, leishmaniasis is a public health problem due to its ease of propagation and ability to cause epidemics. Given this scenario, pyroligneous extracts have drawn the attention of many researchers, given that their processing can contribute to the development of chemical entities with pharmacological potential. In the Technological Prospecting carried out, it was possible to observe the
    formulation of innovations using pyroligneous extracts for therapeutic purposes and the application of these extracts in the treatment of pathologies such as cancer. The exercise of technological prospection is fundamental to guide the development of new technologies. In the experimental study, seven extracts from plants typical of the Brazilian flora were tested. All extracts showed leishmanicidal effects for the evolutionary form of promastigote amazonensis (100% ± 0.00) with IC 50 ranging from 0.01% (Mimosa tenuiflora) to 0.26%
    (Eucalyptus), however, they showed cytotoxic effects in the order of 95.13% (Pennisetum purpureum) for macrophages of the J774.A1 strain in the MTT assay. The results obtained in the pharmacological tests associated with those presented in the Technological Prospecting indicate that studies need to be implemented in order to standardize an extraction method, thus favoring the obtainment of compounds with pharmacological
    properties.


14
  • VIVIANE AMARAL PORTO
  • TOXICITY OF SODIUM METHYLARSINATE IN ZEBRAFISH (Danio rerio) EMBRYOS: ECOTOXICOLOGICAL STUDY AND METABOLOMIC ANALYSIS BASED ON 1H NMR
     
  • Advisor : THIAGO MENDONCA DE AQUINO
  • COMMITTEE MEMBERS :
  • THIAGO MENDONCA DE AQUINO
  • LUCIANO APARECIDO MEIRELES GRILLO
  • DANIELA SANTOS ANUNCIACAO
  • LAZARO WENDER OLIVEIRA DE JESUS
  • ALESSANDRE CARMO CRISPIM
  • Data: Sep 5, 2023


  • Show Abstract
  • Pesticides and herbicides are intended to improve crop productivity, protecting them and preventing the proliferation of pests. Equally, the use of veterinary products is based on the search for higher yields in livestock. In this context, substances derived from the element arsenic (As), such as sodium methylarsinate (MSMA), are present in several products for veterinary and agricultural use. Considering that such products are widely used in Brazil, and other countries, the topics that clarify the risks and toxicity of these compounds have not yet been fully explored. Metabolomics is a branch of the omics sciences that seeks to understand, through the analysis of the metabolites produced in a given organism, which factors influence specific metabolic changes, whether these occur due to lifestyle habits or exposure to any xenobiotic. The metabolomics strategy includes the analysis of biological samples using equipment such as Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR). Thus, this project aimed to investigate, through an ecotoxicological study associated with metabolomics based on 1H NMR, the proportion of impact that arsenic compounds in water can provoke on aquatic species such as zebrafish (Danio rerio). The choice of this species as a model organism was due to its considerable versatility in bioassays. The toxicity study was based on the acute exposure of embryos to MSMA, with serial concentrations in order to obtain the LD50. Sampling for the metabolomic study followed the protocols available in the literature, associated with 1H NMR spectroscopy and statistical study to get the metabolic profile. Thus, the metabolomic analysis revealed 42 metabolites involved in different metabolic pathways. The biochemical profile study suggested that MSMA caused severe impacts, especially on pathways of energy metabolism, endocrine metabolism, hepatic metabolism, and oxidative stress.

2022
Dissertations
1
  • MAILDE JESSICA LIODORIO DOS SANTOS
  • OBTAINING AND CHARACTERIZATION OF MICROCAPSULES AND GRANULATES OF ALAGOAS GREEN PROPOLIS
  • Advisor : TICIANO GOMES DO NASCIMENTO
  • COMMITTEE MEMBERS :
  • JOHNNATAN DUARTE DE FREITAS
  • JOSE MARCOS DOS SANTOS OLIVEIRA
  • MARIA ALINE BARROS FIDELIS DE MOURA
  • TICIANO GOMES DO NASCIMENTO
  • Data: Feb 1, 2022


  • Show Abstract
  • Propolis is a resinous substance, chemically complex, made by bees, whose variability and physicochemical characteristics are dependent on the environment where they are produced. The objective of this work was to obtain and characterize the hydroalcoholic extracts, spray-dryer dry extract and granules of commercial green propolis from beekeeping in the state of Alagoas, through analytical methods of chemical, physicochemical and antimicrobial characterization. The raw material (green propolis extract) was purchased in local commerce, and subjected to processes for obtaining spray-dryer dry extract, pharmaceutical granules and characterizations through tests to determine phenols, flavonoids, antioxidant activity, degree of encapsulation using UV-VIS, High Performance Liquid Chromatography (HPLC), Thermal tests and antibacterial activity test. The HPLC assay showed a chromatographic profile of phenolic compounds such as flavonoids and phenolic acids at wavelengths of 289 nm and 313 nm. The commercial extract of green propolis partitions showed antibacterial activity against the microorganisms Staphylococcus aureus, Staphylococcus epidermidis and Enterococcus feacalis. The degree of encapsulation for the granules ranged between 71.92 and 83.27%. The antioxidant activity ranged between 92.94% and 97.55% at the concentration of 100 µg/mL and IC50 values of 12.78 µg/mL for the extract and between 18.47 µg/mL and 26.13 µg/mL for granules. The determination of total phenols and total flavonoids showed that the granules had lower loss of content compared to the spray-dryer microcapsule. Thermal data showed TG mass loss processes and volatilization endothermic enthalpies between 50ºC and 150ºC that are suggestive of loss of volatile components such as cinnamic acid esters present in green propolis extract. The antioxidant activity tests combined with thermal tests, total flavonoids and total phenols show the importance of monitoring the quality of green propolis encapsulates to avoid losses by volatilization or decomposition during processing steps and the need for special conditions for conditioning and storage of the extract in the solid form. The natural products market has attracted the attention of alcohol-free solid dosage forms.

2
  • CAMILA BIANCA FERREIRA DA ROCHA
  • CHARACTERIZATION OF AMYLASE PRODUCED BY TRIBOLIUM CASTANEUM LARVAE AND APPLICATION IN THE REMOVAL OF DIRT FROM COTTON FABRICS

     

     

     

  • Advisor : LUCIANO APARECIDO MEIRELES GRILLO
  • COMMITTEE MEMBERS :
  • CAMILA BRAGA DORNELAS
  • LUCIANO APARECIDO MEIRELES GRILLO
  • FRANCIS SOARES GOMES
  • Data: Mar 8, 2022


  • Show Abstract
  • A pest, in a broad sense, can be defined as the insect (or other organism) that causes direct damage to humans, their livestock, their crops, or even their possessions. The species Tribolium castaneum Herbst (Coleoptera: Tenebrionidae), stands out as one of the main pests, which, in particular, represents 9% of economic loss of stored grains in developed countries, so that, in developing countries, these losses can represent 20% worldwide. Due to its wide distribution around the globe and its characteristics, the intestine of this species can be used as a source of enzymes for studies for pest control and applications. The objective of this work was the characterization and biotechnological application of an amylase enzyme, from Tribolium castaneum larvae, in the removal of dirt from cotton fabrics. For this purpose, cotton fabrics, previously delimited and stained with starch solution at 1% commercial tomato sauce, were subjected to a washing process with enzymatic crude extract alone and in the presence of two commercial powder soaps, detergent A and detergent B. Furthermore, the crude extract was characterized in relation to parameters such as optimum temperature and thermal stability, optimum pH and behavior in the presence of some metallic ions, such as copper, zinc, calcium and the chelating agent EDTA. Spectrophotometry was used as an analytical method to prove the removal of dirt from the fabrics. It was observed that the amylase enzyme under study showed optimal relative activity over a wide pH range, namely, from 5 to 9, optimal temperature at 37°C and residual activity of more than 80% at 50°C, demonstrating, thus, thermal stability at this temperature. In the presence of some metallic ions, the highest inhibition rates, in relation to the 10mM, 1mM and 0.1mM concentrations, were related to copper sulfate (CuSO4), which comprised 95%, 89% and 86% inhibition, respectively. In relation to the potentiality of detergency, it was observed that the enzymatic extract had the ability to break starch in dirty tissues with starch solution and also demonstrated superior cleaning power, when compared to comercial detergents under study, in front of the dirty tissue commercial tomato sauce thus implying an importante ally and potential adjuvant enzyme to be incorporated in the industry of enzymatic detergents and other products for cleaning.

3
  • ELANE CONCEICAO DOS SANTOS
  • IMMUNOMODULATORY ACTIVITY OF ALAGOAS RED PROPOLIS IN MURINE MACROPHAGES ACTIVATED BY LIPOPOLYSACCHARIDE IN VITRO

  • Advisor : ENIO JOSE BASSI
  • COMMITTEE MEMBERS :
  • TÁRCIO TEODORO BRAGA
  • ENIO JOSE BASSI
  • TICIANO GOMES DO NASCIMENTO
  • Data: Mar 17, 2022


  • Show Abstract
  • Red propolis (RP) is a natural resin, produced by Apis mellifera bees from plant exudate (Dalbergia ecastophyllum), which has several biological properties, including anti-inflammatory activity. Inflammation is the body's response mechanism against various injuries; however, this exacerbated process can trigger an inflammatory disease. Thus, the search for new natural immunomodulatory agents is necessary for the development of new therapeutic approaches that modulate the inflammatory process. In this context, the objective of this work was to evaluate the immunomodulatory potential of Alagoas red propolis (ARP) and its constituents isoliquiritigenin (ISL) and formononetin (FMT) in murine macrophages stimulated with lipopolysaccharide (LPS) in vitro. Initially, the maximum non-toxic concentration (CMNT) of the hydroalcoholic extract (HE) of PVA, ISL, and FMT in murine macrophages of the J774A.1 cell line was determined, based on the analysis of cell viability by the MTT assay. Then, the EH immunomodulatory activities of ARP, ISL, or FMT were evaluated by treating LPS-stimulated macrophages under different experimental conditions. The expression of markers F4/80 and CD86 was evaluated by multiparametric flow cytometry and the quantification of pro and anti-inflammatory cytokines was evaluated by the Cytometric Bead Array (CBA) methodology in the cell culture supernatant. Activation of MAPKs (mitogen-activated protein kinases) was evaluated by analyzing the phosphorylation of ERK1/2 and p38 proteins by intracellular flow cytometry. The expression of NOS2, Arg1, SOCS3, TGF-β, Lamp2, MIP-1α, Ccne1, and HO-1 genes was evaluated by RT-qPCR. It was observed that treatment with EH of PVA reduced the percentage of double-positive cells (F4/80+ CD86+), decreased the expression of the activating molecule CD86 and the levels of pro-inflammatory cytokines IL-6 and TNF. Furthermore, an increase in ERK1/2 and p38 phosphorylation and a decrease of NOS2 and SOCS3 expression were detected 48h after treatment. Treatment with ISL significantly reduced the frequency of F4/80+ CD86+ cells, decreased CD86 expression and phosphorylation of ERK1/2 and p38 proteins. IL-6 and TNF levels were also reduced after ISL treatment. Furthermore, there was a significant decrease in the expression of NOS2 and SOCS3 genes. On the other hand, FMT treatment did not reduce the percentage of double-positive cells (F4/80+ CD86+) and did not alter the phosphorylation of the ERK1/2 and p38 pathways in LPS-stimulated murine macrophages. However, a reduction in IL-6 and TNF levels was observed in the supernatant of macrophages treated with FMT. In conclusion, in this study, it was detected a promising immunomodulatory activity of ARP and the ISL compound on murine macrophages in vitro. These results contribute to a better understanding of the immunomodulatory activity of ARP and its constituents, favoring the development of new therapies and immunological interventions for the treatment of inflammatory diseases.

4
  • PATRICIA DE OLIVEIRA SAMPAIO SANTOS
  • Development and Validation of Smartphone Application for Optimization of Therapeutic Adherence in Patients with Hypertension

  • Advisor : ALFREDO DIAS DE OLIVEIRA FILHO
  • COMMITTEE MEMBERS :
  • ALFREDO DIAS DE OLIVEIRA FILHO
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • FERNANDO SILVIO CAVALCANTE PIMENTEL
  • Data: Apr 14, 2022


  • Show Abstract
  • Therapeutic adherence can be understood as the measure by which patients follow the recommendations for their prescribed treatments, considering the actual behavior of individuals during treatment. The use of mobile technologies to monitor and provide care to individuals with health problems is a growing phenomenon that has been used to optimize therapeutic adherence in recent years. However, few applications for smartphones have been developed by health professionals, adopt different strategies focused on different domains of adherence or have been validated so far. Objectives: To develop and validate the content of a smartphone application to optimize therapeutic adherence in patients with Hypertension. Methodology: A two-phase study was developed.1) systematic review of the literature to identify and evaluate applications to optimize adherence to drug therapies and analysis of application domains and the effectiveness of their functionalities 2 ) Content validation using the DELPHI technique. Ethical aspects: This study adhered to the norms of resolution 466/2012 of the National Health Council. Results: Of the functionalities proposed by the therapeutic adherence validation instrument for the development of the application, they had an acceptable percentage, according to the evaluation of the therapeutic adherence specialists, for the reminder category with 90% the audible alarm and 80 % push notification, for the behavioral change category with 94% personal tracking, 82% external monitoring and 72% social media and the educational change category all proposed functionalities were accepted, showing a percentage of 96%, 86% and 82% for videos, podcast and explanatory texts respectively. Conclusion: The applications used in mobile devices positively provide therapeutic adherence in patients with chronic diseases such as Hypertension, using their domains and their functionalities has improved blood pressure levels, which denotes a significant value. for the development of mobile devices in the health area, emphasizing that studies are further developed and tested in this area.

5
  • ROBERT RODRIGUES ALVES
  • DEVELOPMENT OF CHITOSAN NANOPARTICLES LOADED WITH ESSENTIAL OIL FROM Syzygium aromaticum (CLOVE)

  • Advisor : LUCIANO APARECIDO MEIRELES GRILLO
  • COMMITTEE MEMBERS :
  • IRINALDO DINIZ BASILIO JUNIOR
  • LUCIANO APARECIDO MEIRELES GRILLO
  • MEIRIELLY KELLYA HOLANDA DA SILVA
  • VALTER ALVINO DA SILVA
  • Data: Apr 29, 2022


  • Show Abstract
  • In this scientific research, the synthesis of nanoparticles was performed using a chitosan extracted from Rhynchophorus palmarum, considered an important insect pest of palm trees. First, chitin was extracted and converted into chitosan, through a deacetylation reaction. Chitin is the main structural component of the cuticle of arthropods and from it chitosan is produced, which has several applications in several areas, such as pharmaceutical, food and agriculture. Physicochemical analyzes were performed to characterize these products: Fourier Transform Infrared Spectroscopy (FTIR), X-Ray Diffraction (XRD) and their yields, obtaining excellent results. Then, with the chitosan obtained, the development of nanoparticles encapsulated with essential oil of Syzygium aromaticum (clove) was carried out through the ionic gelation method. Analysis was performed by Gas Chromatography coupled with a mass spectrometer (GC-MS), which revealed a content of 90.71% of eugenol, the major substance responsible for the insecticidal properties of the essential oil. With the nanoparticles, tests were carried out on zeta potential, average particle size, FTIR, Scanning Electron Microscopy, encapsulated oil content and release test, through UV-VIS, in addition to insecticidal tests (repellence and mortality) in adult insects of the species Tribolium castaneum, considered an important pest of stored grains (rice, corn, wheat, among others). The results revealed that the encapsulation of the oil occurred effectively and that the concentration of essential oil was able to repel the insects, but it was not enough to cause their mortality. The development of nanoparticles with clove essential oil, indicate a promising strategy as a bioinsecticide, being an alternative to chemical insecticides, which among the problems, can affect human health.

6
  • GABRIELLA SANTOS BARROS
  • ANTIRETROVIRAL THERAPY COMPREHENSION: EDUCATIONAL PHARMACEUTICAL INTERVENTIONS AS A TOOL IN THE CARE OF HIV/AIDS PATIENTS IN THE STATE OF ALAGOAS

  • Advisor : ELIANE APARECIDA CAMPESATTO
  • COMMITTEE MEMBERS :
  • ELIANE APARECIDA CAMPESATTO
  • ERILDO VICENTE MULLER
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • Data: May 2, 2022


  • Show Abstract
  • Despite the great advances in antiretroviral therapy over time, to achieve success in clinical results it is necessary to effectively take the drugs, following what was prescribed by the health professional. However, for the patient to use the medication properly, all possible information must be provided, clearly, so that he understands the therapeutic plan to be followed. The pharmacist has a fundamental role in the correct use of drug, since at the time of dispensing, it is the last contact that the patient has with a health professional before starting their treatment. Thus, this study objective to verify the level of information of patients about their pharmacotherapy and implement educational pharmaceutical interventions about their knowledge about antiretroviral therapy. Therefore, a prospective interventionist quantitative study was carried out in two health services in the state of Alagoas. To verify the level of information that patients had about their antiretroviral drug therapy, was used the instrument validated by Raehl et al. (2002), and viral charge laboratory test results were used to measure adherence before and after pharmaceutical interventions. 32 patients were followed up by a clinical pharmacist during the 10 month period. From the results obtained, it was possible to observe that the level of understanding of antiretroviral information was considered insufficient for 76.50% (n=102) of patients (p<0.001). When asked about the name of the medication they used, most participants could not inform (78.43%). There was also a high rate of disagreement (87.25%) regarding the dose of the drug, and approximately half of the participants (53.92%) said they did not know if there was any type of interaction with food or if it could be administered close to meal times. However, the most knew the indication (97.06%) as well as the administration times (94.12%) of their medications. Finally, when analyzing the results of viral charge laboratory tests performed before and during pharmaceutical follow-up, it was possible to observe an increase in the number of participants with undetectable viral charge results (< 50 copies/mL) (from 56.25% to 93.75%) (n=32) in the group followed by the clinical pharmacist (p<0.01). The present study shows that the high proportion of patients with a low level of understanding reinforces the importance of the health team in transmitting information more clearly, identifying factors associated with low understanding and solving possible doubts in order to guarantee good therapeutic results. The interventions performed by the pharmacist were able to contribute to the improvement of adherence due to the reduction of the viral charge values for the followed patients. In addition, it reinforces the importance of the pharmacist's presence in the multidisciplinary team developing clinical activities, in promoting the rational use of medicament.

7
  • ANTONY ERNESTO DOS SANTOS SILVA
  • Synthesis of aminoquinolinic compounds with potential antimalarial activity

  • Advisor : MARIO ROBERTO MENEGHETTI
  • COMMITTEE MEMBERS :
  • ISIS MARTINS FIGUEIREDO
  • JOAO XAVIER DE ARAUJO JUNIOR
  • MARIO ROBERTO MENEGHETTI
  • Data: Jun 27, 2022


  • Show Abstract
  • Malaria is considered one of the most serious parasitic diseases of this class, often being fatal and with a high rate of transmission in countries with tropical climates. In 2020 alone, it is estimated that there were 241 million cases and 627,000 deaths from the disease. Such alarming numbers point to a deficiency in antimalarial treatment triggered, basically, by the resistance of the parasites that cause malaria, especially by plasmodium falciparum against chloroquine, making it necessary to develop new antimalarial agents active against these resistant strains. Therefore, this work proposed two strategies in order to obtain compounds with potential antimalarial action from a base aminoquinoline compound that has already shown good activity: i) modification of the side chain that contains a CC triple bond for the olefinic and saturated forms; and ii) alteration of the amino group at the end of the side chain by heterocycles. Thus, the active base compound, N1-(7-chloroquinolin-4-yl)-N4,N4-diethyl-but-2-yne-1,4-diamine (DAQ), underwent catalytic hydrogenation, leading to the generation of compounds (E)-N1-(7-chloroquinolin-4-yl)-N4,N4-diethyl-but-2-ene-1,4-diamine (DAQH2) and N1-(7-chloroquinolin-4-yl)-N4,N4-diethyl-butane-1,4-diamine (DAQH4) and as a by-product the compound N1-(quinolin-4-yl)-N4,N4-diethyl-butane-1,4-diamine (DAQH4(-Cl)) . The yield and proportion between these compounds formed is dependent on the time of the hydrogenation reaction. In addition, the novel compounds N-(4-(pyrrolidin-1-yl)-but-2-yn-1-yl)-7-chloro-quinolin-4-amine (DAQP), N-(4-(morpholino) )-but-2-yn-1-yl)-7-chloro-quinolin-4-amine (DAQM) and N-(4-(piperidin-1-yl)-but-2-yn-1-yl)- 7-Chloro-quinolin-4-amine (DAQPP) were obtained in yields of 35%, 24% and 25% respectively, from Mannich reactions with N-(prop-2-ynyl)-7-chloro-quinolin- 4-amine (PCQ) and heterocycle compounds. These compounds were characterized by techniques such as Nuclear Magnetic Resonance (NMR), Infrared Spectroscopy (FT-IR), Mass Spectrometry (GC-MS), and Simultaneous Thermal Analysis (DSC-TGA). All compounds obtained in this work were sent for biological analysis to determine their toxicity and antimalarial action, especially against chloroquine-resistant strains.

     
8
  • JOAO PEDRO MONTEIRO CAVALCANTE
  • IMMUNOMODULATORY ACTIVITY OF APITOXIN AND MELIT IN MACROPHAGES ACTIVATED BY LIPOPOLYSACCHARIDE IN VITRO

  • Advisor : ENIO JOSE BASSI
  • COMMITTEE MEMBERS :
  • EDEILDO FERREIRA DA SILVA JUNIOR
  • ENIO JOSE BASSI
  • REGIANNE UMEKO KAMIYA
  • Data: Jun 28, 2022


  • Show Abstract
  • Resumo em inglês: Apitoxin is a substance produced by bees that has numerous biological activities, being melittin the main biologically active peptide. Among the immune response cells, macrophages stand out, which can act in pro- or anti-inflammatory responses, being important target cells for the search for substances capable of modulating the immune response. Thus, the aim of this study was to evaluate the immunomodulatory activity of apitoxin (API) and melittin (MEL) in macrophages activated by lipopolysaccharide (LPS) in vitro. For this, murine macrophages (J774.A1 cell line) were initially incubated for 48h with API or MEL to determine the maximum non-toxic concentration (CMNT) by using cell viability assays, whose results were 3.125 μg/mL and 0.625 μg/mL, respectively. To evaluate the immunomodulatory activity of the compounds, macrophages were activated in vitro with LPS (200 ng/mL) and treated with API or MEL. The immunomodulatory activity was investigated by flow cytometry immunophenotyping, with the evaluation of the expression of markers F4/80 and CD86 and parameters of relative size (FSC) and complexity/granularity (SSC). The production of pro- and anti- inflammatory cytokines was also evaluated using the Cytometric Bead Array (CBA) methodology. It was possible to observe that MEL decreased the expression of CD86, as well as the size and complexity/granularity of activated macrophages, while API increased the expression of CD86 and F4/80, and increased the parameters of size and relative cellular complexity. Furthermore, it was also detected that MEL decreased the percentage of intracellular TNF-α producing cells and the levels of IL-6 and TNF-
    α cytokines in the cell culture supernatant. On the other hand, apitoxin increased the percentage of intracellular TNF-α producing cells, as well as the levels of IL-6 and TNF- α in the supernatant. There was no statistically significant difference in IL- 10 levels in both treatments, with API or MEL, when compared to the untreated cells stimulated with LPS. In conclusion, this study verified the immunostimulatory activity of API and the immunosuppressive/anti-inflammatory activity of MEL in macrophages in an inflammatory context stimulated by LPS in vitro thus contributing to the development of new bioactive agents with immunomodulatory activity.

     

9
  • SUZANNE PINHEIRO VIEIRA
  • Anonnacea Induced Cardiovascular Effects: A Scope Review

     
  • Advisor : EURICA ADELIA NOGUEIRA RIBEIRO
  • COMMITTEE MEMBERS :
  • AMANDA KARINE BARROS FERREIRA RODRIGUES
  • EURICA ADELIA NOGUEIRA RIBEIRO
  • SABRINA JOANY FELIZARDO NEVES
  • TICIANO GOMES DO NASCIMENTO
  • Data: Jun 29, 2022


  • Show Abstract
  • Cardiovascular diseases (CVDs) are the main causes of mortality worldwide and generate a significant financial impact on the health system. Among the CVDs, the most prevalent in the public health
    scenario is Systemic Arterial Hypertension (SAH), which presents a multifactorial clinical state, defined by the sustained increase in blood pressure. The asymptomatic character of SAH defies early diagnosis and
    its pharmacological treatment is mainly behavioral due to drug interactions, due to polypharmacy, the cost of drugs and lack of education. Given these circumstances, it is attractive to implement new resources that help to overcome the lack of drug acceptance among patients. Thus, medicinal plants are an important alternative in the
    treatment of CVDs and the genus Annona has shown hypotensive and vasodilating properties in teas and leaves of some species. Therefore, the current study aimed to carry out a scoping review of the literature on the cardiovascular effects of plant species belonging to the Annonaceae family, emphasizing their implications for SAH. For the development of this study, the search and analysis of information was carried out by bibliographic means based on scientific articles. The selected databases were: Scielo, Web of Science, Scopus, Lilacs,
    Pubmed, Science direct and Medline. The research strategies to obtain information were using the following keywords:”Anonnacea” OR “Species” AND “Cardiovascular System”. 9.6% of the genera and 0.72% of the plant species presented studies on pharmacological effects on the cardiovascular system (CVS). The genera Annona and Xylopia stood out. 75% evaluated the pharmacological effects of only substances isolated from different species of Annonaceae, 25% evaluated only extracts, while 5% evaluated essential oil. The most common
    phytochemical classes with action on SCV were alkaloids and diterpenes, and the substances that produced this effect were: Roemerine, Anonaine, Dehydroroemerine, Liriodenine, Norushinsunine, etrahydroisoquinoline, Discretamine, KA-acetoxy, Limacine, Pecrassipine A, Backebergine, Boldine, Apomorphine, Xylopic acid, Oliverine, Olavenic acid and Labdane-302. Regarding the part of the plant used to obtain the extracts/fractions/isolated substances: 23.07% of the studies used the leaves; 30.77% stem bark; 23.07% the
    roots; 15.38% the seeds; and 7.77% the fruits. Regarding the type of experimental animal: 76.19% of the studies used rats, of which 69.23% were Wistar and 30.76% Sprague–Dawley. Regarding the type of experimental approach: 37.5% of the studies carried out an in vitro and
    in vivo approach; 56.25% only in vitro; and 6.25% only in vivo. It is concluded that the Annonaceae family has phytochemical substances with great pharmacological properties in the SCV, and the vasorelaxant
    and hypotensive effects were mentioned several times, revealing in a uniform way that the main mechanism of action observed was the induction of changes in intracellular calcium levels. Therefore, this family proved to be a great therapeutic potential to be studied for the treatment of diseases that affect the SCV.

10
  • LAYSE MARIA SOARES DE OLIVEIRA
  • IMPACT OF MEDICATION RECONCILIATION ON CLINICAL, HUMANISTIC AND ECONOMIC OUTCOMES IN NON-HOSPITALIZED PATIENTS.

  • Advisor : ALFREDO DIAS DE OLIVEIRA FILHO
  • COMMITTEE MEMBERS :
  • ALFREDO DIAS DE OLIVEIRA FILHO
  • MARIA DAS GRACAS LEOPARDI GONCALVES
  • SABRINA JOANY FELIZARDO NEVES
  • Data: Jun 30, 2022


  • Show Abstract
  • Introduction: Medication reconciliation corresponds to the multiprofessional clinical service component of the care transition process. Through it, it becomes possible to identify and resolve potential problems and discrepancies in pharmacotherapy, being, therefore, among the most important interventions that guarantee patient safety. However, the impact of this intervention on health outcomes in outpatients is still poorly understood. Objective: To assess the influence of medication reconciliation on clinical, economic and humanistic outcomes in adult outpatients. Method: A systematic review of studies was carried out that verified the association between the proposed intervention and some clinical, economic or humanistic outcomes published until July 2021, identified by searching the Cochrane Library, Embase, LILACS, Pubmed/Medline, Scopus, CINAHL and Web of Science databases. The search strategy involved words with the terms MESH: Medication Reconciliation, Ambulatory care, Ambulatory care facilities, Primary Health Care, Community Pharmacy Services and non-MESH: Mortality, Morbidity, Drug Costs, Quality of life and Quality-adjusted life Years. Results: 6908 articles were identified, of which 28 studies were selected for full text reading. At the end of the selection process, 13 studies were included in this review. The included studies verified important outcomes and in most of them, there was an association with the proposed intervention. Its methodological designs are mostly adequate, and the general methodological quality is moderate. So, although there are a limited number of studies, there is important initial evidence that medication reconciliation performed in outpatients can affect health outcomes. Conclusion: To date, the scientific literature indicates that medication reconciliation can affect certain clinical health outcomes in outpatients, such as hospital readmissions, visits to the urgency/emergency unit, and mortality. Given the limited number of studies and the use of certain outcomes, especially those related to the economic and humanistic components – there is a need to investigate the real impact of medication reconciliation in additional studies.

11
  • DAVDSON LUIZ DE SOUZA

  • CHARACTERIZATION OF MICROENCAPSULATED CONTAINING RED PROPOLIS FROM ALAGOAS OBTAINED BY IONIC GELIFICATION

  • Advisor : EDEILDO FERREIRA DA SILVA JUNIOR
  • COMMITTEE MEMBERS :
  • EDEILDO FERREIRA DA SILVA JUNIOR
  • JOHNNATAN DUARTE DE FREITAS
  • TICIANO GOMES DO NASCIMENTO
  • VANDERSON BARBOSA BERNARDO
  • Data: Dec 16, 2022


  • Show Abstract

  • Propolis is a natural product that presents a complex mixture, formed by a resinous and balsamic material collected by bees from branches, flowers, pollen, buds and tree exudates. In Brazilian territory, red propolis can be found in several parts of the coast, mainly in mangrove areas. Botanically, originating from Dalbergia ecastophyllum, popularly known as "rabo-de-bugio". Red Propolis of Alagoas stands out for having a large amount of flavonoids, phenolic compounds and some other exclusive compounds. These bioactive compounds have several biological activities, such as anti-inflammatory, healing, antioxidant, antimicrobial, as well as antiviral, antifungal, anticancer, immunomodulatory potential, among others. In this study, we developed microencapsulates (beads) containing crude extract of red propolis, from the ionic gelation method using sodium alginate and calcium chloride, in different concentrations. Subsequently, the generated beads were characterized by scanning electron microscopy (SEM), Fourier-transformed infrared (FTIR), thermogravimetry (TG), phenolic compounds content, and high-performance liquid chromatography with Diodo Array Dection (HPLC-DAD).

2021
Dissertations
1
  • TERESA DE LISIEUX GUEDES FERREIRA LÔBO
  • “Synthesis and characterization of a dental adhesive with Silver nanoparticles biosynthesized with red propolis from Alagoas.”



  • Advisor : ISABEL CRISTINA CELERINO DE MORAES PORTO
  • COMMITTEE MEMBERS :
  • TICIANO GOMES DO NASCIMENTO
  • ISABEL CRISTINA CELERINO DE MORAES PORTO
  • CAMILA BRAGA DORNELAS
  • MARCOS ANTÔNIO JAPIASSU RESENDE MONTES
  • Data: Feb 11, 2021


  • Show Abstract
  • Biogenic synthesis uses natural raw material to reduce macromolecules in nanoparticles and propolis is an alternative in reducing the toxicity of silver nanoparticles. Objective: The objective of this work was to produce and characterize a dental adhesive with silver nanoparticles biosynthesized with red propolis from Alagoas. Methodology: Antioxidant (DPPH method) and antimicrobial activities against Streptococcus mutans, Staphylococcus aureus, Staphylococcus epidermidis, Enterococcus faecalis, by the methods of Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (CBM) of the ethanolic extract of red propolis from Alagoas (EPV), of silver nanoparticles synthesized in a conventional way (NPAgC) and biosynthesized with EPV (NPAgB) and the mixture of NPAgC + EPV. Six patches with NPAgB 250 µg / mL were developed; NPAgC 250 µg / ml; EPV 250 µg / mL; EPV 300 µg / mL; NPAgC 250 µg / mL + EPV 250 and NPAgC 250 µg / mL + EPV 300. Pure adhesive (AE) and Single Bond 2 (3M / ESPE) were used as controls. AE was also tested with 24 µL of ethanol (solvent) to check the effect of the solvent. EPV and NPAgB were subjected to high performance liquid chromatography (HPLC) assays to determine and quantify propolis biomarkers that reduce silver in nanomaterials. The experimental adhesives were characterized by measurements of the degree of conversion (infrared spectroscopy (FTIR), release of nanoparticles in artificial saliva from the polymerized adhesive and antibacterial activity by the disk diffusion method (MDD). Technological research was carried out on the topic. GC data were analyzed using one-way ANOVA (α = 0.05). Results: The average content of flavonoids in the EPV was 1.56% and antioxidant activity (AA%) ranging from 3.15 to 10.53% on average. NPAgB and NPAgC were obtained in the form of a light, fine, spherical shape, blackish in color for NPAgB and silver in color for NPsAgC. Compared to NPAgC, NPAgB showed better results of bacteriostatic activity, except against Enterococcus faecalis, where a similar result was observed for both types of NPs. The bactericidal effect of NPAgB was better for S. mutans and S. epidermidis than NPAgC. NPAgB showed AA% better than NPAgC. The red propolis markers that reduce the silver molecule in nanomaterials were obtained. The degree of conversion of the adhesives varied between 76.19 and 87.57% (p> 0.05). The MDD assay showed better results for NPAgB with a diffusion radius of 3.7mm. The release test carried out in spectrometry and absorption in UV-Vis demonstrated that the adhesives do not release NPs.The microtensile test demonstrated that although the NPAgB (39.56 MPa), EPV 250 (45.85 MPa) and EPV 300 (39.77 Mpa) adhesives had significantly higher immediate bond strength than the control group (34.88 Mpa) there is no significant difference between the analyzed adhesives (p> 0.05). The predominant fracture mode test in all promotion groups was mixed fracture. Conclusion: The synthesis of a dental adhesive with silver nanoparticles biosynthesized with red propolis from Alagoas resulted in a material with antimicrobial activity and a stable matrix with the active principle immobilized within the material.

2
  • KADJA LUANA CHAGAS MONTEIRO
  • DEVELOPMENT OF NEW INDOLIC AND BENZIMIDAZOLIC DERIVATIVES AS POTENTIAL FLUORESCENT PROBES

  • Advisor : THIAGO MENDONCA DE AQUINO
  • COMMITTEE MEMBERS :
  • THIAGO MENDONCA DE AQUINO
  • LUCIANO APARECIDO MEIRELES GRILLO
  • JOSUE CARINHANHA CALDAS SANTOS
  • DIMAS JOSE DA PAZ LIMA
  • FRANCISCO ANTÔNIO DA SILVA CUNHA
  • Data: Feb 22, 2021


  • Show Abstract
  • Small organic molecules with fluorescent properties when in contact with an analyte have become a topic of intense research in recent years. Labeled as fluorescent probes, these act as cellular beacons and have several fluorescence mechanisms. The benzimidazole and indole nuclei are examples of important fluorophores found in several dyes and organic probes, in addition to having a recognized affinity for several biomolecules, such as DNA and serum albumin; for this reason, they were selected for the synthesis of the probes proposed in this work. The synthesis strategy consists in the condensation of the mentioned heterocycles with p-functionalized aldehydes by aromatic amines, aliphatic amines and boronic acids through the formation of an azomethine bond, promoting the extension of electron displacement, essential for fluorescence. The reaction intermediates were synthesized through Buchwald-Hartwig, Suzuki-Miyaura and SNAr reactions, where eight benzaldehydes were obtained. Yields ranged from 23-84% for indole derivatives and 10-37% for benzimidazole derivatives. The compounds were evaluated for purity by chromatography, as well as by determining the melting range. Structural characterization was performed by 1H and 13C NMR. Through a preliminary analysis, four of the thirteen synthesized probes showed a significant fluorescence response in contact with BSA. Of these, the KCH60 probe (λex / λem = 415/555 nm) was selected for tests to optimize analytical parameters. The Britton-Robinson buffer at 10 mM (pH 6) and the probe concentration at 5 μM showed maximum sensitivity. The stoichiometry of the probe-BSA complex was 1: 1 (Job method). The linear range was 0.5 - 4.0 μM with a detection limit of 0.38 μM and RSD <6.0% for BSA. Finally, it is expected that these results will enable the use of these derivatives in assays for the quantification of serum albumin in real samples, in addition to enabling the design of new active molecules and / or with fluorescent properties.

3
  • INGRID VIEIRA FERNANDES MONTEIRO
  • DEVELOPMENT OF A NANOSYSTEM TO CONTROL RINCOPHOROL AGGREGATION PHEROMONE RELEASE”

  • Advisor : CAMILA BRAGA DORNELAS
  • COMMITTEE MEMBERS :
  • ARÍDIO MATTOS JUNIOR
  • ANTONIO EUZEBIO GOULART SANTANA
  • CAMILA BRAGA DORNELAS
  • HENRIQUE FONSECA GOULART
  • LUCIANO APARECIDO MEIRELES GRILLO
  • Data: Feb 26, 2021


  • Show Abstract
  • Rincoforol is an aggregation pheromone applied as bait in traps to capture Rhynchophorus palmarum. The challenge of its commercialization is in the form of packaging, which does not guarantee its integrity during the whole period of application nor modulates its release rate. Therefore, the formulation of this pheromone in a modified release device is recommended, ensuring protection against degradation and release at appropriate levels. Therefore, the present work aims to develop a modified release device of the polymer/silicate lamellar nanocomposite (PLN) type, composed of alginate and bentonite, providing protection to Rincoforol and release at appropriate levels. Films and gels were prepared through ionotropic gelation and different silicate concentrations. The structural analysis of the nanocomposite was performed through X-ray diffractometry and infrared spectroscopy. The film product was evaluated for adhesiveness, swelling index and tensile strength. DRX and FTIR elucidated the interaction between the matrix components. The adhesiveness of the films was lost according to the applied obtaining methodology. The addition of silicate to the formulation resulted in an increase in the mechanical resistance of the polymer, resulting in lower water uptake and greater resistance to traction. The matrix, until then, shows promising as a modified release device. It is also expected to complete stability studies of Rincoforol adsorbed to the matrix and release kinetics to ensure that the nanocomposite is suitable for modified release of this pheromone.

4
  • JOCIMARA RODRIGUES DE LIMA
  • CALCIUM SUPPLEMENTATION IN PRE-ECLAMPSIA PREVENTION: A
    SYSTEMATIC REVIEW OF RANDOMIZED CLINICAL TRIALS

  • Advisor : ALFREDO DIAS DE OLIVEIRA FILHO
  • COMMITTEE MEMBERS :
  • ALFREDO DIAS DE OLIVEIRA FILHO
  • RUTH FRANCA CIZINO DA TRINDADE
  • SABRINA JOANY FELIZARDO NEVES
  • Data: Mar 15, 2021


  • Show Abstract
  • Preeclampsia is a multisystem disease that occurs mainly in the
    second half of pregnancy, is characterized by hypertension and
    proteinuria, affecting approximately 10% of pregnancies, being the
    main cause of maternal and perinatal mortality. Studies show an
    increase in its incidence in populations with low calcium intake,
    however, there is little evidence in the scientific literature about
    the effectiveness of calcium in preventing pre-eclampsia.
    Objective: efficacy and effectiveness of the effect of calcium
    supplementation on the manifestation of preeclampsia and
    perinatal outcomes in pregnant women. Method: Systematic
    review of randomized clinical trials. Controlled vocabulary from the
    &quot;National Library of Medicines&quot; was used through &quot;Medical Subject
    Headings&quot; (MESH). PubMed; Cochrane; LILACS and registries
    included Clinical Trials, Current Controlled Trials (www.controlled-
    trials.com/isrctn/) and World Health Organization International
    Trials Registry. There was no time limit for the search and it was
    completed on June 31, 2021. The quality of evidence was assessed
    using the GRADE approach. Results: Thirty RCTs were eligible for
    this review. A total of 9,544 women used only calcium or calcium
    plus another type of supplement. Of these, 6556 participants used
    only calcium. Nine RCTs were classified as high or moderate
    quality. The average adherence rate was 78% in the intervention
    group and 69% in the control group. Fifteen RCTs that used calcium
    supplementation in pregnant women versus placebo showed
    statistically significant values in reducing the incidence of PE. The
    main findings were: blood pressure levels, incidences of
    preeclampsia, prematurity, neonatal morbidity and mortality,
    maternal morbidity and mortality, neonatal admission to the
    intensive care unit, uterine artery Doppler scan, and stillbirth.
    Conclusion: Calcium appears to be associated with the prevention
    of PE, regardless of dosages, initiation of treatment and
    associations tested. Future studies should mainly consider the
    sample size calculation based on the risks of developing PE in
    subgroups of patients, and the measurement of therapeutic
    adherence through validated methods capable of determining
    behavioral aspects of pregnant women.

5
  • STEPHANNIE JANAINA MAIA DE SOUZA
  • Evaluation of the antiviral activity of red propolis from Alagoas against the Chikungunya virus in vitro

  • Advisor : ENIO JOSE BASSI
  • COMMITTEE MEMBERS :
  • EDEILDO FERREIRA DA SILVA JUNIOR
  • ENIO JOSE BASSI
  • TICIANO GOMES DO NASCIMENTO
  • Data: Apr 9, 2021


  • Show Abstract
  • Chikungunya virus (CHIKV) causes Chikungunya fever disease that can progress to the chronic phase characterized by persistent arthralgia. There are currently no antivirals or licensed vaccines against this virus. Alagoas Red Propolis (ARP) is a natural resin that bees produce by mixing saliva and exudate from plants that have antimicrobial activities. Therefore, our objective was the chemical characterization and evaluate the antiviral activity of ARP against CHIKV in vitro. First, CHIKV was isolated from serum in the acute viremia phase of the disease, replicated in Vero E6 cells and confirmed by RT-PCR using primers for the E1 protein genomic region (882 bp). DNA sequencing and phylogenetic analysis (MEGA7 software) confirmed East/ Central/ South African (ECSA) as the CHIKV genotype. The chemical characterization of PVA was performed by high performance liquid chromatography (HPLC-DAD) and the presence of the liquiritigenin, pinobanksin, daidzein, formononetin, biochanin A and isoliquiritigenin markers were detected. The ARP cytotoxicity in Vero E6 cells was evaluated by MTT colorimetric assay and CC50 values of 200.1 μg / mL, 22.57 μg / mL and > 40,0 μg / mL was obtained for the hydroalcoholic extract (HE), hexane fraction (HF) and ethyl acetate fraction (EAF), respectively. For the antiviral activity assays, CHIKV adsorption was performed for 2h on Vero E6 cells, followed by treatment with different concentrations of PVA solutions for 72h and cell viability analysis by MTT assay. As result, a promising antiviral activity was detected and the IC50 values were 22.80 μg/mL, 4.24 μg/mL and 5.34 μg/mL for the HE, HF and EAF, respectively. In addition, high selectivity indices (SI) were obtained for the compounds (HE = 8.7, HF = 5.3 and EAF > 7.5). In order to confirm the antiviral activity, virus intracellular labeling was performed and the percentage of positive cells was detected by flow cytometry 48h after infection. As result, all tested ARP solutions showed a reduction effect higher than 50% on the percentage of infected cells. In the inactivation assay, CHIKV suspensions were first incubated with ARP for 2h, diluted and incubated for 48h, followed by the detection of the plaque-forming units (PFU). As result, a reduction in the number of PFUs was detected [4,867 PFU / mL (EH), 12,767 PFU / mL (HF) and 8,867 PFU / mL vs. 31,000 PFU / mL untreated viral control. In addition, to assess which stages of viral infection the compounds are acting on, cells were treated with ARP and their fractions for 2h before CHIKV infection, simultaneously with infection (0h), or for different times post-infection (2h, 4h and 6h). Interestingly, the inhibitory activity was detected at 2h, 4h and 6h post- infection for both HE and HF and 2h and 4h after infection for EAF. To analyze the activity of the compounds detected by HPLC-DAD against the CHIKV proteins, a molecular Docking silica assay was performed, as a result of all the compounds detected above as targets of their activities, the CHIKV E3-E2-E1 glycoproteins complex. In conclusion, the data obtained in the present study demonstrate the promising antiviral activity of ARP against CHIKV in vitro, thus contributing to the development of new therapeutic agents for this arbovirus.

6
  • LALESKA BARROS CASTRO DOS SANTOS
  • Red propolis co-therapy from Alagoas and Glucantime®: clinical evaluation in leishmaniasis

  • Advisor : CAMILA BRAGA DORNELAS
  • COMMITTEE MEMBERS :
  • CAMILA BRAGA DORNELAS
  • CELIA MARIA SILVA PEDROSA
  • FERNANDO DE ARAUJO PEDROSA
  • LUCIANO APARECIDO MEIRELES GRILLO
  • Data: Apr 12, 2021


  • Show Abstract
  • Leishmaniasis is a neglected disease that, according to the etiological agent, can present as Tegumentary (LT) and visceral (LV) Leishmaniasis. For both, the World Health Organization (WHO) recommends the use of antimonials (in Brazil, Glucantime®) as a medication of first choice, despite presenting some drawbacks, such as a long period of treatment, route of parenteral administration and incidence of side effects . Hence the importance of the search for alternatives in the chemotherapy of leishmaniasis. Thus, the project aims at the clinical investigation of co-therapy, red propolis from Alagoas PVA (oral administration) associated with Glucantime® in patients with LT and LV. The study was divided into two groups, control (GE-LTA and GE-LVA) for LT and LV patients using Glucantime® and patients who used PVA in co-therapy with Glucantime® (GE-LTAB and GE-LVAB). The variables were analyzed: sex, age, origin, time of healing of the lesions, plasma markers (AST and ALT) and biomarkers of renal function (urea and creatinine). Patients with VL were evaluated using the same markers, biomarkers, in addition to hematological markers (hematocrits, leukocytes, lymphocytes and platelets), reduction in the size of the viscera, liver and spleen. The PVA extract was previously characterized according to the Ministry of Agriculture, Livestock and Supply (MAPA). Twenty LT patients were admitted to the study, 70% male and the majority between 20 and 59 years old, from the 3rd RS The healing of injuries in the GE-LTAB group stood out for presenting a shorter healing time when compared to the group control. The markers and biomarkers showed no difference between the groups. VL patients, 75% were male and the majority were under 20 years old, coming from the 7th and 8th RS The markers such as ALT and AST, in the GE-LVA group were altered and in the GE-LVAB group it remained within normality. Biomarkers showed no difference between groups and the same occurred with hematological markers. The viscera reduction was greater in the GE-LVAB group. This study showed a more marked reduction in the viscera in the group that used propolis.

7
  • GRECIA LILIBETH SOLÓRZANO ANDINO
  • Synthesis and antibacterial evaluation of Schiff ´s bases

  • Advisor : JOAO XAVIER DE ARAUJO JUNIOR
  • COMMITTEE MEMBERS :
  • EDEILDO FERREIRA DA SILVA JUNIOR
  • JOAO XAVIER DE ARAUJO JUNIOR
  • THIAGO MENDONCA DE AQUINO
  • ISIS MARTINS FIGUEIREDO
  • Data: Jul 19, 2021


  • Show Abstract
  • Resumo em inglês: Schiff´s bases are an important class of organic compounds, that have the azomethine group which is responsible for a wide variety of biological applications including antibacterial activity. Like Schiff's bases, heterocycles such as thiazole, pyridine and indole are pharmacophores present in several pharmaceutical products, where antibacterial properties are also reported. Thus, the present work aims at the synthesis of Schiff´s bases compounds containing the heterocycles: thiazol, indole and pyridine through the condensation of aldehydes with aromatic amines. Six compounds (LQM385-LQM390) were obtained with yields greater than 70%. The structures were characterized by the Nuclear Magnetic Resonance (NMR) method of hydrogen (1H) and carbon (13C). The antibacterial activity was evaluated by the broth microdilution method against two gram-negative bacterial strains (Escherichia coli ATCC 25922 and Pseudomonas aeruginosa ATCC 27853) and two gram-positive strains (Staphylococcus aureus ATCC 25923 and Enterococcus faecalis ATCC 29212), the compounds presented significant to moderate activity with minimal inhibitory concentrations (MIC) of 62.5 µg/ml-500 µg/ml against most strains. The evaluation of the antibacterial activity showed that the compounds LQM385, LQM389 and LQM390 exhibited the best MIC against the S. aureus ATCC 25923 strain, being the lowest in the study including also the MIC of the compound LQM 385 against E. faecalis ATCC 29212.

8
  • ARTHUR LUY TAVARES FERREIRA BORGES
  • STUDIES OF OBTAINING AND CHARACTERIZATION OF SPRAY-DRYER MICROCAPSULAS WITH UNCARIA TOMENTOSA EXTRACT

  • Advisor : TICIANO GOMES DO NASCIMENTO
  • COMMITTEE MEMBERS :
  • CÍCERO FLÁVIO SOARES ARAGÃO
  • IRINALDO DINIZ BASILIO JUNIOR
  • LARA MENDES DE ALMEIDA
  • TICIANO GOMES DO NASCIMENTO
  • Data: Aug 31, 2021


  • Show Abstract
  • The medicinal herbal Uncaria tomentosa has been widely used in traditional medicine, where its decoctions, prepared from its bark, are used for the treatment of various diseases and the anti-inflammatory activity is applied as the main pharmacological application. The work developed and characterized spray-dryer microcapsules of hydroalcoholic extract loaded with Uncaria tomentosa. The Uncaria tomentosa bark powder was acquired by the e-commerce in Kampo de Ervas® and subjected to extraction by infusion (using aqueous solution) or maceration (using 70ºGL and 92ºGL hydroethanolic solution). The hydroalcoholic extracts were partitioned using hexane and dichloromethane solvents, following the extraction method for alkaloids and, subsequently, submitted to an antibacterial activity test. The 92°GL ethanol extract was used to prepare a microcapsule composition of Uncaria tomentosa obtained by the Spray-Dryer technique. The infusion extracts, 92ºGL ethanol extracts and Uncaria tomentosa microcapsule were subjected to chemical and physicochemical characterization tests by phytochemical screening tests for alkaloids, total phenols, total flavonoids, antioxidant activity tests, UV-Vis and UFLC-tests DAD, SEM test, thermal analysis tests, infrared test and dissolution tests. The characterization ethanol extract and microcapsules from Uncaria tomentosa reveal the presence of alkaloids using Dragendorff's test and phenolic compounds such as gallic acid, catechin and caffeic acid using the comparative technique of analytical standard injections by UFLC-DAD. A physicochemically stable composition of Uncaria tomentosa microcapsules was developed on a micrometric scale when analyzed by SEM, FTIR and Thermal Analysis. The dissolution tests showed Uncaria tomentosa microcapsules poorly water-soluble and pharmacotechnical adjuvants can help improve the release and absorption of active constituents by gastrointestinal fluids resulting in solid herbal compositions reaching 80% release after 240 min. The Uncaria tomentosa ethanol extract and microcapsules showed antioxidant activity with IC50 values of 5.80 and 5.03 µg/mL, respectively. The Uncaria tomentosa dichloromethane fractions showed antibacterial activity against gram-negative and gram-positive bacterial strains, the UT-7 fraction obtained the best result for all strains studied, obtaining MICs below 256 μg/mL, probably due to the synergistic effect between alkaloids and phenolic compounds.

9
  • RAFAEL ALEIXO DOS SANTOS SILVA
  • PHARMACOGNOSTIC EVALUATION AND ANTIFUNGAL ACTIVITY OF DRIED FRUITS FROM Illicium verum Hook. F. (SCHISANDRACEAE).

  • Advisor : IRINALDO DINIZ BASILIO JUNIOR
  • COMMITTEE MEMBERS :
  • IRINALDO DINIZ BASILIO JUNIOR
  • TICIANO GOMES DO NASCIMENTO
  • LARA MENDES DE ALMEIDA
  • Data: Oct 11, 2021


  • Show Abstract
  • Illicium verum Hook f. (Schisandraceae), known as star anise, is a native specie to Asia marketed worldwide. The herbal drug (HD), consisting of dried fruit, is used in folk medicine and the pharmaceutical industry. In its essential oil is the anethole, the major component, to which pharmacological activities are mentioned. Cutaneous mycoses are clinical manifestations caused by a group of fungi called dermatophytes that affect humans and animals. Despite the various therapeutic options, the side effects and the resistance to antifungals are a problem for treatment, thus requiring the search for new antifungal agents. Despite its extensive use in phytotherapy and commercial, there are few studies dealing with pharmacognostic analysis of I. verum, like those of his activity on dermatophytes. Thus, the aim of this work was to make the quality control of dried fruits of I. verum and evaluate the antimycotic capacity of essential oil (IVEO) on dermatophytes. For the method, a sample of star anise was acquired in a herbal shop of the city of Maceió/AL and the quality control of HD was done according to the Brazilian Pharmacopoeia 6th edition (2019), being performed: botanical identification (macro- and microscopy), determination of foreign matter, total ash, yield and chemical profile of volatiles. Purity tests were performed in triplicate and expressed by mean and standard deviation (M±SD). For antifungal activity, six clinical samples of dermatophytes were taken: Microsporum canis (1), Trichophyton rubrum (1), Trichophyton tonsurans (1), Trichophyton mentagrophytes (3). The search consisted by microdilution in broth, whose concentrations of IVEO were from 10,000 μg/mL to 78.1μg/mL and the results were expressed by the Minimum Inhibitory Concentration (MIC) and from this, that of the Minimum Fungicidal Concentration (MFC). The identity analysis showed that the samples met the macroscopic parameters of the HD. However, microscopy showed morphological differences in fruits that did not mature, indicating in them, absence of specialized structures for oil storage. The foreign matter yield (1.6%±0.32) and total ash (3.0%±0.10) were in accordance with the monograph of the specie. The percentage of the chemical marker anethole was in accordance with the monograph (>99%), however, the volatile yield was below the expected (6.25% w/v). The MIC/MFC for the samples were from 10,000 to 78.1μg/mL (MIC) and 10,000 to 625 ± μg/mL (MFC). The results of this search show that HD met the quality requirements proposed by the pharmacopoeia and ratifies the potential and activity of IVEO in fungi due to anethole.

10
  • RODRIGO JOSE NUNES CALUMBY
  • Characterization of cultivable intestinal microbiota in Rhynchophorus palmarum Linnaeus (Coleoptera: Curculionidae) and determination of cellulolytic activity



  • Advisor : LUCIANO APARECIDO MEIRELES GRILLO
  • COMMITTEE MEMBERS :
  • CAMILA BRAGA DORNELAS
  • LUCIANO APARECIDO MEIRELES GRILLO
  • VALTER ALVINO DA SILVA
  • LARA MENDES DE ALMEIDA
  • Data: Oct 15, 2021


  • Show Abstract
  • Rhynchophorus palmarum L. is an agricultural pest that affects various palm crops, including coconut (Cocos nucifera) plantations which are prominent in the economy of Northeastern Brazil. Characterization of the intestinal microbiota of R. palmarum, as well as elucidation of aspects related to the biochemistry and physiology of the insect's digestion are essential for intervention in specific metabolic processes as a form of pest control. This study aimed to characterize the intestinal microbiota of R. palmarum and investigate its ability to degrade cellulosic substrates, in order to explore new biological control measures. Intestinal dissections of eight adult insects (4 males and 4 females) of R. palmarum captured in the field was performed in a laminar flow chamber. The intestines were then inserted into brain heart infusion (BHI) broth and incubated at ± 35°C for 24 hours. Subsequently, serial dilutions (10-1 to 10-6) of these cultures were plated on nutritious culture media for the isolation of bacteria and fungi. The microorganisms were identified by MALDI-TOF mass spectrometry, and subsequently evaluated for their ability to degrade cellulose as a carbon source in a solid culture medium containing carboxymethylcellulose. The research of T. paradoxa was carried out from the culture of R. palmarum carapace and digestive tract samples captured in the field (n = 20) on potato dextrose agar plus chloramphenicol. As a result, 20 microorganisms were identified, corresponding to 16 bacterial (Acinetobacter, Alcaligenes, Arthrobacter, Bacillus, Citrobacter, Enterococcus, Kerstersia, Lactococcus, Micrococcus, Proteus, Providencia, Pseudomonas, Serratia and Staphylococcus) and fungal (Candida e Saccharomyces), which have been found in Phyla Firmicutes, Actinobacteria, Proteobacteria and Ascomycota. The intestinal microbiotas proved to be quite diversified with few differences observed between the sexes. Regarding the species identified, Enterococcus faecalis was more abundant both in male insects (25.3%) and in females (47.1%), followed by Citrobacter koseri (15.2%) and Alcaligenes faecalis (8.8%) in males and Bacillus cereus (10.4%) and Citrobacter koseri (4.4%) in females. Six bacterial and one fungal species showed cellulolytic activity, with emphasis on Bacillus cereus, which showed high enzyme synthesis (IE = 4.6). The isolations made from the carapace of R. palmarum showed 15.0% of mycelial growth of T. paradoxa, corresponding to three infected insects. T. paradoxa was not found in the intestinal tract of insects. This is the first worldwide study on the characterization of the intestinal microbiota of R. palmarum, composed mainly of facultative microorganisms with fermentative metabolism capable of degrading plant polysaccharides, which can play an important role in insect nutrition. These findings open interesting perspectives for the development of new strategies for the symbiotic control of R. palmarum.

2020
Dissertations
1
  • ILZA FERNANDA BARBOZA DUARTE
  • STUDY OF VOLATILE CONSTITUENTS AND ANTIOXIDANT AND MICROBIOLOGICAL ACTIVITIES OF EXTRACTS OF RED PROPOLIS FROM ALAGOAS
  • Advisor : IRINALDO DINIZ BASILIO JUNIOR
  • COMMITTEE MEMBERS :
  • IRINALDO DINIZ BASILIO JUNIOR
  • LARA MENDES DE ALMEIDA
  • SAMIA ANDRICIA SOUZA DA SILVA
  • JOHNNATAN DUARTE DE FREITAS
  • Data: Jan 24, 2020


  • Show Abstract
  • The term "propolis" is meant for resinous material composed of a set of natural substances, which are not collected directly from different parts and exudates from plants where salivary sections of bees, wax and pollen are added for training of the final product. Some phytochemical investigations using Alagoas red propolis (PVA) allow the identification of several classes of compounds in their composition, but are not yet well known in their volatile composition. To this end, the project aims to extract essential oil from red propolis (OEPV), physically and chemically characterize a chemical composition of extracts, ethanolic extract of red propolis (EEPV), ethanolic extract of red propolis sludge (EEBPV) Red Propolis Aqueous (EAPV) and OEPV from the state of Alagoas, evaluated as their biological activities. It performed the extraction of OEPV by hydrodistillation of red propolis, in its crude form, and the preparation of extracts (EEPV, EEBPV and EAPV), besides evaluating the quality of propolis comparing the results of the extracts against the essential oil. As the methodologies used were the physicochemical research, ash, collected, flavonoids and total phenolics), antioxidant activity, chromatographic and phytochemical profile analysis by GC-MS (Mass Spectrometry Gas Chromatography), Headspace extraction and UPLC- DAD (Ultra Performance Liquid Chromatography coupled to a Diodes Array Detector) and evaluation of antibacterial activity against Staphlococcus aureus ATCC 25923, Staphlococcus epidermidis CCCD-S010, Pseudomonas aeruginosa ATCC 27853 and Escherichia coli ATCC 14942. It was observed in the results found in the physicochemical analysis that the EEPV, EEBPV, EAPV and OEPV, are within the standards recommended by the ABPM, being found respective values of 216.1, 272.93, 188.37 and 713.95 mg. EAG.g-1 for phenols and 25.3, 20.1 and 27.3 mg EQ.g-1 for total flavonoids, however OEPV showed no flavonoid concentration. The antioxidant activity of the extracts showed IC50 values of 11.88 μg/mL for EEPV, 13.81 μg/mL for EEBPV, 18.81 μg/mL for EAPV and 64.20 μg/mL for OEPV. GC-MS and Headspace analyzes showed the presence of major phenolic compounds such as anethole and metileugenol. UPLC-DAD showed the presence of liquiritigenin, isoliquiritigenin, formononetin and bolusanthol in EEPV, EEBPV and EAPV. In the bacterial analysis the EEPV and EEBPV extracts showed no activity against the strains tested, while the EAPV and OEPV presented activities and respective values against S. aureus (MIC 250 and 4500 μg/mL), S. epidermidis (MIC 500 and 2250 μg/mL), P. aeruginosa (MIC 1000 and 4500 μg/mL) and E. coli (MIC 500 and 4500 μg/mL). Thus, it was possible to conclude that the unprecedented results are promising and offer a basis to broaden the scope of the research with red propolis, observing in the extracts physicochemical characteristics, chromatographic and phytochemical profiles, with characteristics of a good quality red propolis.

     

2
  • SAMAYSA DE LIMA LINS
  • SYNTHESIS OF NANOLIPOSOMES AND STUDY OF INCLUSION COMPLEX WITH LQM168 USING ELECTROCHEMICAL, SPECTROSCOPIC AND MOLECULAR DYNAMICS TECHNIQUES
  • Advisor : THIAGO MENDONCA DE AQUINO
  • COMMITTEE MEMBERS :
  • THIAGO MENDONCA DE AQUINO
  • CAMILA BRAGA DORNELAS
  • FABRICIA DA ROCHA FERREIRA
  • Data: Feb 17, 2020


  • Show Abstract
  • Modern strategies for drug planning and development are based on knowledge of the pathophysiology of the disease, on the study of biochemical pathways and on the selection of molecular targets, allowing the development of safer and more effective molecules. Molecular hybridization is a rational strategy for obtaining new drugs that has been highlighted due to the possibility of potentiating the pharmacological effect, reducing toxicity and lower risk of drug interaction. In addition, the development of methodologies that make it possible to increase the bioavailability of these compounds without altering their chemical structure and allowing their release to the target of action is extremely important and, in this sense, liposomes occupy a prominent position as drug carriers due to their their biocompatibility, structural variability and because they are highly functional, allowing the association of structures regardless of their charge or molecular mass. In order to increase the solubility and stability of LQM168 (which has quinoline and thiazolidine nuclei, with proven antitumor activity) in aqueous media, the formation of an inclusion complex with unilamellar cationic liposomes functionalized with CdSe/CdS was evaluated through electrochemical, spectroscopic and molecular dynamics techniques. The cationic unilamellar liposomes and inclusion complexes studied were synthesized using the lipid film hydration method and characterized using AFM, UV-VIS, fluorescence spectroscopy and FTIR. The electrochemical studies for LQM 168 were carried out in aprotic medium (DMF+TBAP) and in protic medium (PBS pH: 7.0) in an electrochemical system consisting of 3 electrodes (working electrode: glassy carbon, reference: Ag|AgCl |Cl-, against electrode: platinum wire). In the VC studies, LQM 168 showed a reversible electrochemical profile with redox potential values favorable to the physiological processes of electron transfers (Epa: -0.056V and Epc: -0.085V). In the behavior of LQM168 against ssDNA and dsDNA by VPD, an interaction of LQM168 with the guanine and adenine bases was observed without causing the breakage of the DNA double helix strand; LQM168 in the presence of oxygen did not promote the generation of ROS. Interaction studies between LQM 168 and liposomes by UV-vis demonstrated band supply at 315nm and a bathochromic and hypochromic shift of the band at 415nm; the interaction of LQM168 with liposomes by fluorescence was possible to assess by the decrease in fluorescence intensity; by FTIR, the characterization of the complex was verified by the supply of bands at 815cm-1 referring to the C-Cl stretching and by the permanence of the band at 1477 cm-1 referring to the methyl in position 4 of the thiazolidine ring. Cationic unilamellar liposomes are a promising alternative to circumvent the physicochemical factors of LQM168, allowing an increase in its stability and solubility in aqueous media. The use of electrochemical techniques in the investigation of electron transfer behavior and in the elucidation of mechanisms of action is simple, useful, cheap and completely reproducible, allowing the achievement of chemical parameters similar to those that occur at the cellular level.

3
  • AUBERT KRISTHIAN SANTOS ALVES
  • Influence of Topical Application of Brazilian Red Propolis Gel on the Progression of Experimental Periodontitis in Rats

  • Advisor : ISABEL CRISTINA CELERINO DE MORAES PORTO
  • COMMITTEE MEMBERS :
  • ANA REGINA OLIVEIRA MOREIRA
  • ISABEL CRISTINA CELERINO DE MORAES PORTO
  • LUIZ ALEXANDRE MOURA PENTEADO
  • TICIANO GOMES DO NASCIMENTO
  • Data: Jun 8, 2020


  • Show Abstract
  • Periodontal diseases are pathologies that cause progressive destruction of supporting tissues and dental protection in susceptible individuals. Several chemical agents have been used as adjuvants to inhibit the formation of oral biofilm and prevent the progression of periodontal disease. This study radiographically evaluated the action of Brazilian Red Propolis (BRP) in the progression of ligature-induced periodontal disease in rats. The ethanolic extract of BRP from Alagoas State was characterized by UPLC-DAD and tested for cytotoxicity in J774.A1 macrophages. Forty-two Wistar rats, divided into groups (n = 6): Group C (without treatment); Group G (Gel - pure natrosol gel application); CHX Group (Chlorhexidine - 2% chlorhexidine gel); Group PV10 (BRP gel at 10 mg / ml); Group PV15 (BRP gel at 15 mg / ml); Group PV10 + CHX (BRP 10 mg / ml + 2% chlorhexidine gel); Group PV15 + CHX (BRP 15 mg / ml + 2% chlorhexidine gel) were used in the study. The gels were applied daily, since the insertion of the ligature, for a period of 15 days. After the experimental period, the animals were euthanized and radiographic analyzes were performed using cone beam computed tomography to measure periodontal bone support. The values obtained were analyzed by variance (ANOVA) followed by Tukey's post-hoc. The results obtained indicated the presence of anti-inflammatory and immunomodulatory flavonoids, such as liquiritigenin, daidzein, formononetin, isoliquiritigenin, pinobanksin, biochanin A and pinocembrin. The cytotoxicity test demonstrated BRP was non-toxic in concentrations up to 10 µg / ml. The tomographic evaluation showed significantly less bone loss (p <0.05) in the groups that used BRP in relation to the control and vehicle, whereas there was no statistically significant difference between the experimental groups. In conclusion, the application of gel with BRP from Alagoas demonstrated a protective effect against bone resorption due to experimental periodontitis similar to chlorhexidine, being a potential therapeutic agent in the management of periodontal disease.

     

     

SIGAA | NTI - Núcleo de Tecnologia da Informação - (82) 3214-1015 | Copyright © 2006-2024 - UFAL - sig-app-4.srv4inst1 19/04/2024 10:34