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1.
Braz J Biol ; 83: e242439, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34468507

RESUMO

Plinia cauliflora (Mart.) Kausel, popularly known as jabuticaba, is rich in polyphenols. Phenolic compounds exhibit several biological properties, which reflect on biomarkers such as biochemical parameters. In the present study, we evaluated the plasmatic levels of glucose, total cholesterol, HDL-cholesterol, triglycerides, and uric acid of Chinese hamsters fed for 45 days with a regular diet or cholesterol-enriched diet supplemented with a liquid extract obtained from P. cauliflora fruits residues standardized in ellagic acid and total phenolic compounds. The results showed that the concentrated extract obtained from jabuticaba residues increased the glycemia of animals fed with a regular diet and reduced the plasmatic uric acid levels of animals fed with a cholesterol-enriched diet. Since hyperuricemia is considered to be a significant risk factor of metabolic disorders and the principal pathological basis of gout, the liquid extract from P. cauliflora fruits residues would be a promising candidate as a novel hypouricaemic agent for further investigation.


Assuntos
Frutas , Myrtaceae , Animais , Cricetinae , Cricetulus , Fenóis , Extratos Vegetais
2.
Rev. Bras. Saúde Mater. Infant. (Online) ; 21(1): 89-96, Jan.-Mar. 2021. tab
Artigo em Inglês | LILACS | ID: biblio-1250683

RESUMO

Abstract Objectives: evaluate breastfeeding self-efficacy and its associated factors in puerperal women assisted at a public health system in Brazil. Methods: it is a cross-sectional analytical study, with convenience sampling and two instruments: sociodemographic, personal and clinical, and Breastfeeding Self-Efficacy Scale (BSES-SF), applied to puerperal women in a puerperal outpatient clinic at two public maternity hospitals in Goiânia/GO, from September to November 2019. Inclusion criteria: mothers in puerperal period, age above 18 years, children born at term and on exclusive breastfeeding. Exclusion criteria: report depression and premature wean. Results: 128puerperal women were interviewed. The average age was 26.7 (± 5.9) years old. The levels of self-efficacy were high (95.3%) and no puerperal had a low level. The variables with statistical significance were: experience in breastfeeding (p= 0.0312), not having received information on breastfeeding during pregnancy (p=0.0292), did not receive other milk at the maternity (p=0.0380), did not feel pain while breastfeeding (p=0.0242), being able to breastfeed on demand (p=0.0124), presence of breast engorgement (p=0.0207), presenting protruding nipples (p=0.0427). Conclusions: clinical and personal aspects were identified as risk factors for early weaning. This can provide information for the training ofprofessionals and structuring the interventions in health services, with a view in preventing these risks.


Resumo Objetivos: avaliar a autoeficácia da amamentação e seus fatores associados em puérperas atendidas no sistema público de saúde. Métodos: estudo transversal analítico, com amostragem por conveniência e dois instrumentos: sociodemográfico, pessoal e clínico, e Escala de Autoeficácia em Amamentação, aplicada a puérperas em um ambulatório de acompanhamento puerperal de duas maternidades públicas de Goiânia/GO, de setembro a novembro de 2019. Critérios de inclusão: mães no período puerperal, idade acima de 18 anos, filhos nascidos a termo e em aleitamento materno exclusivo. Critérios de exclusão: autorrelato de depressão e desmame prematuro. Resultados: foram entrevistadas 128 puérperas. A média de idade foi de 26,7 (± 5,9). Os níveis de autoeficácia foram altos (95,3%) e nenhuma puérpera obteve nível baixo. As variáveis com significância estatística foram: experiência em amamentar (p = 0,0312), não ter recebido informações sobre aleitamento materno durante a gravidez (p = 0,0292), não ter recebido outro leite na maternidade (p = 0,0380), não sentindo dor durante a amamentação (p = 0,0242), sendo amamentada sob demanda (p = 0,0124), presença de ingurgitamento mamário (p = 0,0207), apresentando mamilos salientes (p = 0,0427). Conclusões: foram identificados aspectos clínicos e pessoais como fatores de risco para o desmame precoce. Isso pode fornecer informações para a formação de profissionais e a estruturação de intervenções nos serviços de saúde, visando a prevenção desses riscos.


Assuntos
Humanos , Feminino , Gravidez , Recém-Nascido , Lactente , Desmame , Aleitamento Materno/estatística & dados numéricos , Fatores de Risco , Autoeficácia , Período Pós-Parto , Fatores Socioeconômicos , Sistema Único de Saúde , Brasil , Estudos Transversais , Integralidade em Saúde
3.
Rev. bras. anal. clin ; 53(1): 50-57, 20210330. graf, tab
Artigo em Português | LILACS | ID: biblio-1291388

RESUMO

Objetivo: A sífilis é uma doença infectocontagiosa, transmitida pela via sexual e verticalmente durante a gestação. Quando não tratada adequadamente, a doença pode permanecer no organismo por grandes períodos sem sintomas clínicos, pode evoluir atingindo múltiplos sistemas do organismo. O objetivo deste estudo foi determinar o perfil epidemiológico de usuários do Laboratório Clínico da PUC Goiás, com casos confirmados de sífilis adquirida, no período de 2017 a 2019. Métodos: Trata-se de uma pesquisa retrospectiva, a partir da análise dos resultados dos exames de VDRL e FTA-Abs no banco de dados eletrônico do laboratório. Resultados: Um total de 8.884 exames de rastreamento para sífilis adquirida foi solicitado neste período. Deste total, 11,1%, 17,2% e 10,9% apresentaram resultados reagentes no VDRL, respectivamente, nos anos de 2017, 2018 e 2019. Um percentual de 78,7% dos exames positivos para sífilis (VDRL) foi confirmado pelo teste treponêmico FTA-Abs (IgG). Em 2017, 32,45% dos exames foram reagentes para FTA-abs; 7,95% em 2018, e 9,3% em 2019. Os resultados desta pesquisa evidenciam uma maior prevalência de casos de sífilis adquirida em adultos jovens do sexo masculino (47,9%/2017; 72,9%/2018; 63,0%/2019) com baixa escolaridade. Conclusão: Nos últimos anos, a sífilis tem se tornado um grande problema de saúde pública, visto o seu aumento a cada ano, mesmo com tratamento simples e diagnóstico rápido. Medidas de controle, principalmente voltadas para o tratamento adequado do paciente e parceiro, uso de preservativo, informação à população devem ser fortalecidas pelos programas de saúde para controle da sífilis na população estudada.


Objective: Syphilis is an infectious disease, transmitted sexually and vertically during pregnancy. When not treated properly, the disease can remain in the organism for long periods without clinical symptoms, it can evolve reaching multiple systems. The objective of this study was to determine the epidemiological profile of users of the Clinical Laboratory of PUC Goiás, with confirmed cases of acquired syphilis, in the period from 2017 to 2019. Methods: This is a retrospective research, based on the analysis of the results of the VDRL exams and FTA-Abs in the laboratory's electronic database. Results: A total of 8,884 screening tests for acquired syphilis were ordered during this period. Of this total, 11.1%, 17.2% and 10.9% had positive results in the VDRL, respectively, in the years 2017, 2018 and 2019. A percentage of 78.7% of the positive tests for syphilis (VDRL) were confirmed by the FTA-Abs (IgG) treponemic test. In 2017, 32.45% of the tests were reactive for FTA-abs; 7.95% in 2018, and 9.3% in 2019. The results of this research show a higher prevalence of cases of acquired syphilis in young male adults (47.9% / 2017; 72.9% / 2018; 63,0% / 2019) with low education. Conclusion: In recent years, syphilis has become a major public health problem, as it increases every year, even with simple treatment and rapid diagnosis. Control measures, mainly aimed at the adequate treatment of the patient and partner, use of condoms, information to the population must be strengthened by health programs for syphilis control in the studied population.


Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Sorologia , Sífilis/epidemiologia , Diagnóstico Clínico
4.
Rev. bras. cancerol ; 67(1): e-081080, 2021.
Artigo em Português | LILACS | ID: biblio-1147043

RESUMO

Introdução: A Gardnerella vaginalis facilita a infecção pelo papilomavírus humano (HPV). Objetivo: Verificar a associação entre anormalidades citológicas e presença de Gardnerella vaginalis nos esfregaços cervicovaginais encaminhados ao Laboratório Clínico da Pontifícia Universidade Católica de Goiás (LAC/PUC Goiás) estratificadas por faixa etária. Método: Estudo transversal realizado no LAC/PUC Goiás entre janeiro de 2013 a dezembro de 2015. Para análises estatísticas, a variável idade foi categorizada em ≤39 anos e >40 anos, utilizando o programa IBM SPSS Statistics (Version 2.0, 2011®) para o teste de qui-quadrado (X²), com intervalo de confiança de 95% e valor p<0,05. Resultados: Foram analisados 4.558 exames citopatológicos, a maioria com presença de Lactobacillus spp. (46,97%). A prevalência dos agentes patogênicos foi a Gardnerella vaginalis (79,6%), seguida de Candida spp. (16,8%), Trichomonas vaginalis (2,2%), Herpes simplex (0,4 %) e Chlamydia trachomatis (0,1%). As anormalidades citológicas foram observadas em 9,1%, sendo atypical squamous cells of undetermined significance (ASC-US) 2,57%, low grade squamous intraepithelial lesion (LSIL) 1,78%, atypical squamous cells of undetermined significance cannot exclude high grade squamous intraepithelial lesion (ASC-H) 3,52%, high grade squamous intraepithelial lesion (HSIL) 1,08%, atypical endocervical cells, favor neoplastic (AGC-NEO) 0,22% e carcinoma 0,02%. Houve uma associação significante entre anormalidades citológicas graves e mulheres ≥40 anos, OR 3,01 (IC 95% 2,0-4,58) (p<0,0001). Mulheres ≤40 anos mostraram significância à presença de Gardnerella vaginalis (p<0,0004). Conclusão: Uma elevada prevalência de Gardnerella vaginalis foi encontrada associada com as anormalidades citológicas, principalmente em mulheres sexualmente ativas.


Introduction:Gardnerella vaginalis facilitates human papillomavirus (HPV) infection. Objective: To verify the association between cytological abnormalities and the presence of Gardnerella vaginalis in cervicovaginal smears sent to the Clinical Laboratory of the Pontifical Catholic University of Goiás (LAC/PUC Goiás) stratified by age range. Method: Cross-sectional study carried out at LAC/PUC Goiás from January 2013 to December 2015. For statistical analysis, the variable age was categorized as ≤39 years and >40 years, using the IBM SPSS Statistics program (Version 2.0, 2011®) for the chi-square test (X²), with a 95% confidence interval and p<0.05. Results:4,558 cytopathological exams were analyzed, most of them with the presence of Lactobacillus spp (46.97%). The prevalence of pathogens was Gardnerella vaginalis (79.6%), followed by Candida spp. (16.8%), Trichomonas vaginalis (2.2%), Herpes simplex (0.4%) and Chlamydia trachomatis (0.1%). Cytological abnormalities were observed in 9.1%, being atypical squamous cells of undetermined significance (ASC-US) 2.57%, low grade squamous intraepithelial lesion (LSIL) 1.78%, atypical squamous cells of undetermined significance cannot exclude high intraepithelial lesion (ASC-H) 3.52%, high grade squamous intraepithelial lesion (HSIL) 1.08%, atypical endocervical cells, neoplastic favor (AGC-NEO) 0.22% and carcinoma 0.02%. There was a significant association between severe cytological abnormalities and women >40 years old OR 3.01 (95% CI 2.0-4.58) (p<0.0001). Women ≤40 years old showed the presence of Gardnerella vaginalis (p<0.0004). Conclusion:A high prevalence of Gardnerella vaginalis was found and its association with cytological abnormalities, especially in sexually active women.


Introducción:Gardnerella vaginalis facilita la infección por el virus del papiloma humano (VPH). Objetivo: Verificar la asociación entre anormalidades citológicas y la presencia de Gardnerella vaginalis en frotis cervicovaginales enviadas al Laboratorio Clínico de la Pontificia Universidad Católica de Goiás (LAC/PUC Goiás) estratificadas por grupo de edad. Método: Estudio transversal realizado en LAC/PUC Goiás desde enero de 2013 hasta diciembre de 2015. Para el análisis estadístico, la edad variable se clasificó como ≤39 años y >40 años, utilizando el programa IBM SPSS Statistics (Versión 2.0, 2011®) para la prueba de chi-cuadrado (X²), con un intervalo de confianza del 95% y p <0,05. Resultados: Se analizaron 4.558 exámenes citopatológicos. La prevalencia de Lactobacillusspp. con 46,97%. Los patógenos como Gardnerella vaginalis fueron 79,6%, Candidaspp. 16,8%, Trichomonas vaginalis 2,2%, Herpes simplex 0,4%, y Chlamydia trachomatis 0,1%. Se observaron anormalidades citológicas en 9,1%, con células escamosas atípicas de significado indeterminado (ASC-US) 2,57%, lesión intraepitelial escamosa de bajo grado (LSIL) 1,78%, células escamosas atípicas de significación indeterminada no pueden excluir lesión intraepitelial (ASC-H) 3,52%, lesión intraepitelial escamosa de alto grado (HSIL) 1,08%, células endocervicales atípicas, favor neoplásico (AGC-NEO) 0,22% y carcinoma 0,02%. Hubo una asociación significativa entre anormalidades citológicas severas y mujeres >40 años OR 3,01 (IC 95% 2,0-4,58) (p<0,0001). Las mujeres ≤40 años mostraron la presencia de Gardnerella vaginalis (p<0,0004). Conclusión: Se encontró una alta prevalencia de Gardnerella vaginalis y su asociación con anomalías citológicas, especialmente en mujeres sexualmente activas.


Assuntos
Humanos , Feminino , Adolescente , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Adulto Jovem , Esfregaço Vaginal , Gardnerella vaginalis/isolamento & purificação , Vaginose Bacteriana/patologia , Infecções por Bactérias Gram-Positivas/patologia , Teste de Papanicolaou , Estudos Transversais
5.
An Acad Bras Cienc ; 92(2): e20190107, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32556049

RESUMO

The Hancornia speciosa latex reveals angiogenic, osteogenic, and anti-inflammatory properties, which present its potential for developing of wound healing drugs; however, the latex compounds responsible for angiogenesis remain unknown. One strategy to screen these active compounds is evaluation of latex fractions. This study aimed to obtain different fractions of latex and evaluate its angiogenic activity separately using the chick chorioallantoic membrane (CAM) assay. The serum (SE) fraction was responsible for angiogenesis, which was subject to biochemical characterization and computational simulations in order to understand the contribution of H. speciosa latex in wound healing process. Our results revealed weak antioxidant potential and absence of antimicrobial activity in the SE fraction. Phytochemical analysis identified chlorogenic acids (CGA) as the main compound of SE fraction. CGA bioactivity predictions identify different molecules associated with extracellular matrix (ECM) remodeling, such as metalloproteinases, which also are overexpressed in our CAM assay experiment. Docking simulations revealed the interactions between CGA and matrix metalloproteinase 2. In conclusion, SE latex fraction stimulates angiogenesis and may influence ECM remodeling. These properties may contribute to the wound healing process, and also confirm the widespread use of this plant.


Assuntos
Indutores da Angiogênese/farmacologia , Apocynaceae/química , Membrana Corioalantoide/efeitos dos fármacos , Matriz Extracelular/efeitos dos fármacos , Látex/farmacologia , Extratos Vegetais/farmacocinética , Indutores da Angiogênese/isolamento & purificação , Animais , Apocynaceae/classificação , Embrião de Galinha , Cromatografia Líquida de Alta Pressão , Látex/isolamento & purificação
6.
Sci. med. (Porto Alegre, Online) ; 29(1): ID32157, 2019.
Artigo em Inglês | LILACS | ID: biblio-1009905

RESUMO

AIMS: To perform a physicochemical and phytochemical characterization of Jatropha curcas latex and to investigate its antiangiogenic potential. METHODS: We performed an initial physicochemical characterization of J. curcas latex using thermal gravimetric analyses and Fourier Transform Infrared spectroscopy. After that, phenols, tannins and flavonoids were quantified. Finally, the potential of J. curcas latex to inhibit angiogenesis was evaluated using the chick chorioallantoic membrane model. Five groups of 20 fertilized chicken eggs each had the chorioallantoic membrane exposed to the following solutions: (1) water, negative control; (2) dexamethasone, angiogenesis inhibitor; (3) Regederm®, positive control; (4) 25% J. curcas latex diluted in water; (5) 50% J. curcas latex diluted in water; and (6) J. curcas crude latex. Analysis of the newly-formed vascular net was made through captured images and quantification of the number of pixels. Histological analyses were performed to evaluate the inflammation, neovascularization, and hyperemia parameters. The results were statically analyzed with a significance level set at p<0.05. RESULTS: Physicochemical characterization showed that J. curcas latex presented a low amount of cis-1.4-polyisoprene, which reduced its elasticity and thermal stability. Phytochemical analyses of J. curcas latex identified a substantial amount of phenols, tannins, and flavonoids (51.9%, 11.8%, and 0.07% respectively). Using a chick chorioallantoic membrane assay, we demonstrated the antiangiogenic potential of J. curcas latex. The latex induced a decrease in the vascularization of the membranes when compared with neutral and positive controls (water and Regederm®). However, when compared with the negative control (dexamethasone), higher J. curcas latex concentrations showed no significant differences. CONCLUSIONS: J. curcas latex showed low thermal stability, and consisted of phenols, tannins, and flavonoids, but little or no rubber. Moreover, this latex demonstrated a significant antiangiogenic activity on a chick chorioallantoic membrane model. The combination of antimutagenic, cytotoxic, antioxidant and antiangiogenic properties makes J. curcas latex a potential target for the development of new drugs.


OBJETIVOS: Realizar uma caracterização físico-química e fitoquímica do látex de Jatropha curcas e investigar o seu potencial antiangiogênico. MÉTODOS: foi realizada uma caracterização físico-química inicial do látex de J. curcas utilizando as análises termogravimétricas e a espectroscopia com a Transformada de Fourier. Depois disso, fenóis, taninos e flavonoides foram quantificados. Finalmente, o potencial do látex de J. curcas em inibir a angiogênese foi avaliado através do uso de modelo de membrana corioalantoica de embrião de galinha. Cinco grupos, cada um com 20 ovos de galinha fertilizados, tiveram a membrana corioalantoica exposta às seguintes soluções: (1) água, controle negativo; (2) dexametasona, inibidor da angiogênese; (3) Regederm®, controle positivo; (4) 25% de látex de J. curcas diluído em água; (5) 50% de látex de J. curcas diluído em água; e (6) látex bruto de J. curcas. A análise da rede vascular recém-formada foi feita por meio de imagens capturadas e quantificação do número de pixels. Análises histológicas foram realizadas para avaliar os parâmetros de inflamação, neovascularização e hiperemia. Os resultados foram analisados estaticamente com nível de significância estabelecido em p<0,05. RESULTADOS: A caracterização físico-química mostrou que o látex de J. curcas apresenta uma baixa quantidade de cis-1,4-poliisopreno, o que reduz sua elasticidade e estabilidade térmica. Análises fitoquímicas do látex de J. curcas identificaram uma quantidade significativa de fenóis, taninos e flavonoides (51,9%, 11,8% e 0,07% respectivamente). Usando o modelo de membrana corioalantoica de ovo de galinha embrionado, demonstrou-se o potencial antiangiogênico do látex de J. curcas. O látex induziu a diminuição da vascularização das membranas, em comparação aos grupos controle neutro e positivo (água e Regederm®). CONCLUSÕES: O látex de J. curcas apresentou baixa estabilidade térmica, ausência ou pouca quantidade de borracha e presença de fenóis, taninos e flavonoides em sua composição. Além disso, apresentou alta atividade antiangiogênica no modelo de membrana corioalantoica de embrião de galinha. A combinação de propriedades antimutagênicas, citotóxicas, anti-inflamatórias, antioxidantes e antiangiogênicas faz com que o látex de J. curcas seja um alvo potencial para o desenvolvimento de novos medicamentos.


Assuntos
Preparações Farmacêuticas , Farmacologia , Jatropha
7.
Rev. bras. farmacogn ; 28(1): 118-123, Jan.-Feb. 2018. tab, graf
Artigo em Inglês | LILACS-Express | LILACS | ID: biblio-898739

RESUMO

ABSTRACT A validation study of a reverse-phase high-performance liquid chromatographic assay for the quantification of two furanocoumarins (psoralen and bergapten) in soft extract obtained from Brosimum gaudichaudii Trécul, Moraceae, roots was conducted. The developed method was sensitive, rapid, reproducible, easy and precise, and showed linearity (r > 0.99) in the range of 10-64 µg/ml for psoralen, and 9-56 µg/ml for bergapten. It also showed a good efficiency for the photodegradation analysis of psoralen and bergapten in the soft extract. The photostability results showed that the Higuchi model presented the best fitting to the obtained data. Both chemical markers showed stability over 2.6 days, suggesting potential applications of the extract in obtaining intermediate products from this plant material. Furanocoumarins take around 30 min to be activated by UV light, reaching the maximum biological potential. Thus, the results obtained to the Higuchi model, corresponding to 2.6 days of stability, shows feasibility with future applications of these chemical markers.

8.
Artigo em Inglês | MEDLINE | ID: mdl-28761495

RESUMO

A simple HPLC-UV method has been developed and validated for the quantification of ellagic acid (EA) in ethanol extracts of Eugenia uniflora L. (Myrtaceae) leaves. The ultrasound-assisted extraction (UAE) optimization was performed using a Box Behnken design (33) combined with response surface methodology to study the effects of the ethanol concentration (%, w/w), extraction time (minutes), and temperature (°C) on the EA concentration. The optimized results showed that the highest extraction yield of EA by UAE was 26.0 µg mL-1 when using 44% (w/w) ethanol as the solvent, 22 minutes as the extraction time, and 59°C as the extraction temperature. The concentration of EA in relation to the predicted value was 93.7% ± 0.4. UAE showed a strong potential for EA extraction.

9.
Oxid Med Cell Longev ; 2017: 2383157, 2017.
Artigo em Inglês | MEDLINE | ID: mdl-29422986

RESUMO

Jabuticaba is an exotic fruit native to Brazil that has been arousing medicinal interest. Using chemical (HPLC-PDA, resonance mass spectra, and NMR), electroanalytical (differential pulse voltammetry, radical scavenging assay), and pharmacological (in vivo and in vitro) approaches, we have identified its bioactive compounds and hypotensive effects on hypertensive rats. The hydroalcoholic extract of jabuticaba (HEJ) presents a great quantity of phenolic compounds, and several molecules with hydroxyl groups present high efficiency as an antioxidant. The treatment with HEJ (100 and 300 mg/kg/day, for four weeks) presented hypotensive effects on L-NAME-induced hypertensive rats, possibly improving the nitric oxide bioavailability because of its high antioxidant potential. Furthermore, renal and cardiac hypertrophies were also attenuated after the HEJ treatment. Moreover, the vascular responses to contractile and dilating agonists were improved with the HEJ treatment, which is also able to induce nitric oxide production in endothelial cells.


Assuntos
Frutas/química , Hipertensão/tratamento farmacológico , Myrtaceae/química , Extratos Vegetais/análise , Extratos Vegetais/farmacologia , Animais , Modelos Animais de Doenças , Masculino , Ratos
10.
DST j. bras. doenças sex. transm ; 28(3): 79-85, 20161212.
Artigo em Português | LILACS | ID: biblio-831515

RESUMO

O câncer do colo do útero afeta as mulheres em todo o mudo. O agente etiológico é o papilomavírus humano (HPV). Apesar da alta incidência, existem programas de prevenção que incluem o exame Papanicolau e a vacina anti-HPV. Objetivo: O objetivo deste estudo foi avaliar a percepção e o conhecimento dos acadêmicos de graduação em Biomedicina da Pontifícia Universidade Católica de Goiás (PUC Goiás) sobre a infecção pelo HPV, o câncer do colo do útero e a vacina anti-HPV. Métodos: Um questionário foi aplicado com perguntas de múltipla escolha. A média de acerto para cada grupo de questões foi classificada como satisfatória quando acima de 80%; razoável, entre 70 e 80%; e insatisfatório, quando menor que 70%. Os dados foram transportados para o programa R Core Team 2012 e para a análise estatística foi utilizado o teste qui-quadrado ( χ 2 ), com intervalo de confiança de 95% e valor significativo inferior a 0,05. Resultados: Entre os 268 participantes, índices de acerto observados para as questões relacionadas ao conhecimento sobre a infecção pelo HPV variaram de 23,2 a 99,6%, com média de 75,7%; acerca do câncer do colo do útero, os índices de acerto ficaram entre 25,9 e 98,1%, com média de 68,9%; concernente à vacina anti-HPV, os índices de acerto variaram de 14,3 a 97,4%, com média geral de 69,3%. Conclusão: Os resultados mostraram que o conhecimento geral dos acadêmicos foi insuficiente. Destaca-se a necessidade de novas estratégias de ensino na graduação sobre o HPV, suas complicações e prevenção.


Cervical cancer affects women worldwide. The etiological pathogen is the Human Papillomavirus (HPV). Despite the high incidence, there are some prevention programs that include Pap smear test and the anti-HPV vaccine. Objective: The objective of this study was to evaluate the perception and knowledge of HPV infection, cervical cancer, and anti-HPV vaccine among biomedicine students from the Pontifícia Universidade Católica de Goiás (PUC Goiás). Methods: A questionnaire was administered with objective questions in a multiple-choice format. The mean score for each group of questions was classified as follows: satisfactory, if above 80%; reasonable, between 70 and 80%; and unsatisfactory, when less than 70%. The data was transferred to the R Core Team 2012. In order to develop the statistical analysis, the chi-square test ( χ 2 ) was applied, with a confidence interval of 95% and a significant value below 0.05. Results: From 268 participants, the scores concerning the HPV infection varied from 23,2 to 99,6%, with an average of 75,7%; with regard to cervical cancer, scores ranged from 25,9 to 98,1% with an average of 68,9%; and regarding the anti-HPV vaccine, scores ranged from 14,3 to 97,4%, with an average of 69,3%. Conclusion: The results showed that the general performance of the academics was insufficient. We highlight the need for new strategies on undergraduate teaching about HPV, its complications and prevention.


Assuntos
Humanos , Feminino , Disciplinas das Ciências Biológicas , Conhecimento , Papillomaviridae , Vacinas contra Papillomavirus , Percepção , Neoplasias do Colo do Útero/prevenção & controle
11.
Pharmacogn Mag ; 12(45): 9-12, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-27019555

RESUMO

BACKGROUND: Myrcia amazonica. DC is a species predominantly found in northern Brazil, and belongs to the Myrtaceae family, which possess various species used in folk medicine to treat gastrointestinal disorders, infectious diseases, and hemorrhagic conditions and are known for their essential oil contents. MATERIALS AND METHODS: This study aimed applied the Box-Behnken design combined with response surface methodology to optimize ultrasound-assisted extraction of total polyphenols, total tannins (TT), and total flavonoids (TF) from M. amazonica DC. RESULTS: The results indicated that the best conditions to obtain highest yields of TT were in lower levels of alcohol degree (65%), time (15 min), and also solid: Liquid ratio (solid to liquid ratio; 20 mg: 5 mL). The TF could be extracted with high amounts with higher extraction times (45 min), lower values of solid: Liquid ratio (20 mg: mL), and intermediate alcohol degree level. CONCLUSION: The exploitation of the natural plant resources present very important impact for the economic development, and also the valorization of great Brazilian biodiversity. The knowledge obtained from this work should be useful to further exploit and apply this raw material. SUMMARY: Myrcia amazonica leaves possess phenolic compounds with biological applications;Lower levels of ethanolic strength are more suitable to obtain a igher levels of phenolic compouds such as tannins;Box-Behnken design indicates to be useful to explore the best conditions of ultrasound assisted extraction. Abbreviation used: Nomenclature ES: Ethanolic strength, ET: Extraction time, SLR: Solid to liquid ratio, TFc: Total flavonoid contents, TPc: Total polyphenol contents, TTc: Total tannin contents.

12.
Talanta ; 149: 77-84, 2016.
Artigo em Inglês | MEDLINE | ID: mdl-26717816

RESUMO

Azadirachta indica A. Juss., also known as neem, is a Meliaceae family tree from India. It is globally known for the insecticidal properties of its limonoid tetranortriterpenoid derivatives, such as azadirachtin. This work aimed to optimize the azadirachtin ultrasound-assisted extraction (UAE) and validate the HPLC-PDA analytical method for the measurement of this marker in neem dried fruit extracts. Box-Behnken design and response surface methodology (RSM) were used to investigate the effect of process variables on the UAE. Three independent variables, including ethanol concentration (%, w/w), temperature (°C), and material-to-solvent ratio (gmL(-1)), were studied. The azadirachtin content (µgmL(-1)), i.e., dependent variable, was quantified by the HPLC-PDA analytical method. Isocratic reversed-phase chromatography was performed using acetonitrile/water (40:60), a flow of 1.0mLmin(-1), detection at 214nm, and C18 column (250×4.6mm(2), 5µm). The primary validation parameters were determined according to ICH guidelines and Brazilian legislation. The results demonstrated that the optimal UAE condition was obtained with ethanol concentration range of 75-80% (w/w), temperature of 30°C, and material-to-solvent ratio of 0.55gmL(-1). The HPLC-PDA analytical method proved to be simple, selective, linear, precise, accurate and robust. The experimental values of azadirachtin content under optimal UAE conditions were in good agreement with the RSM predicted values and were superior to the azadirachtin content of percolated extract. Such findings suggest that UAE is a more efficient extractive process in addition to being simple, fast, and inexpensive.


Assuntos
Limoninas/análise , Limoninas/química , Azadirachta , Cromatografia Líquida de Alta Pressão , Etanol/química , Frutas/química , Limite de Detecção , Reprodutibilidade dos Testes , Temperatura , Ondas Ultrassônicas
13.
Int J Mol Sci ; 16(10): 23760-83, 2015 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-26473827

RESUMO

Functional foods include any natural product that presents health-promoting effects, thereby reducing the risk of chronic diseases. Cerrado fruits are considered a source of bioactive substances, mainly phenolic compounds, making them important functional foods. Despite this, the losses of natural vegetation in the Cerrado are progressive. Hence, the knowledge propagation about the importance of the species found in Cerrado could contribute to the preservation of this biome. This review provides information about Cerrado fruits and highlights the structures and pharmacologic potential of functional compounds found in these fruits. Compounds detected in Caryocar brasiliense Camb. (pequi), Dipteryx alata Vog. (baru), Eugenia dysenterica DC. (cagaita), Eugenia uniflora L. (pitanga), Genipa americana L. (jenipapo), Hancornia speciosa Gomes (mangaba), Mauritia flexuosa L.f. (buriti), Myrciaria cauliflora (DC) Berg (jabuticaba), Psidium guajava L. (goiaba), Psidium spp. (araçá), Solanum lycocarpum St. Hill (lobeira), Spondias mombin L. (cajá), Annona crassiflora Mart. (araticum), among others are reported here.


Assuntos
Frutas/química , Magnoliopsida/química , Fenóis/análise , Brasil
14.
Artigo em Inglês | MEDLINE | ID: mdl-25960756

RESUMO

This study's aim was to determine the effect of hydroalcoholic extract of M. cauliflora (HEMC) on vascular tension and blood pressure in rats. In our in vitro studies using precontracted isolated aortas from rats, HEMC and acetylcholine (positive control) induced relaxation only in vessels with endothelium. Pretreatment with L-NAME (NO synthase inhibitor) or ODQ (soluble guanylyl cyclase (sGC) inhibitor) abolished the HEMC-induced relaxation. The treatment with MDL-12,330A (adenylyl cyclase (AC) inhibitor) or diclofenac (COX inhibitor) reduced HEMC-induced vasorelaxation. The blockade of muscarinic and ß-adrenergic receptors (by atropine and propranolol, resp.) did not promote changes in HEMC-induced vasorelaxation. In our in vivo studies, catheters were inserted into the right femoral vein and artery of anesthetized rats for HEMC infusion and the measurement of blood pressure, heart rate, and aortic blood flow. The intravenous infusion of HEMC produced hypotension and increased aortic blood flow with no changes in heart rate. These findings showed that HEMC induces endothelium-dependent vascular relaxation and hypotension with no alteration in heart rate. The NO/sGC/cGMP pathway seems to be the main cellular route involved in the vascular responsiveness.

15.
Pharmacogn Mag ; 11(41): 170-5, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25709229

RESUMO

BACKGROUND: The standardized liquid extract of Brosimum gaudichaudii Trécul is an alternative for the treatment of vitiligo. There is a shortage of solid oral dosage forms developed from standardized extracts of this plant specie. OBJECTIVE: This study is aimed to obtain pellets with a standardized liquid extract of B. gaudichaudii. RESULTS: The standardized liquid extract of B. gaudichaudii was obtained through maceration and percolation with a 55% ethanol-water solution (v/v). Pellets were obtained through a mixture of extract of 500 g of B. gaudichaudii standardized extract, 500 g of microcrystalline cellulose PH101 and 10 g of hydroxypropyl methylcellulose K100. The pellets obtained presented a homogeneity yield of 92%, aspect ratio of 1.16 ± 0.65, shape fator e R of 0.35 ± 0.09 and Feret diammeter of 0.87 ± 0.27. These pellets were coated with a suspension composed of titanium dioxide, aluminum red lacquer, ethyl cellulose, talc and magnesium stearate. Before the photostability test, the uncoated pellets showed psoralen content equal to 0.13 ± 0.01% and to the 5-MOP was 1.40 ± 0.27%. After exposure to one level (3 J.cm(-2)) of UVB irradiation the uncoated pellets presented a degradation of 2.16% of psoralen and 8.1% of 5-MOP. After exposure to three levels (10, 20 and 30 J.cm(-2)) of UVA irradiation the uncoated pellets exhibited photodegradation of 9.78, 17.64, 24.21% of psoralen and 18.95, 23.68, 28.48% for 5-MOP. The coated pellets where unaffected after photostability test. CONCLUSION: Pellets were obtained with the standardized liquid extract of B. gaudichaudii and coating is a technological alternative to ensure the stability of the formula.

16.
Food Chem ; 153: 224-33, 2014 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-24491724

RESUMO

The genus Myrciaria occurs in various Brazilian biomes. Its species contains several active components, including phenolic compounds, such as tannins, flavonoids, ellagic acid and anthocyanins. Biological activities reported for Myrciaria fruits and leaf and bark extracts include antioxidant, antibacterial and antifungal effects. This work aims to provide an overview of the active compounds of Myrciaria, highlighting its secondary metabolites and medicinal properties for stimulating new studies regarding this genus.


Assuntos
Myrtaceae/química , Extratos Vegetais/química , Extratos Vegetais/farmacologia , Plantas Medicinais/química , Animais , Anti-Infecciosos/química , Anti-Infecciosos/farmacologia , Anti-Inflamatórios/química , Anti-Inflamatórios/farmacologia , Humanos , Hipoglicemiantes/química , Hipoglicemiantes/farmacologia
17.
Rev. bras. farmacogn ; 23(2): 224-229, Mar.-Apr. 2013. ilus, tab
Artigo em Inglês | LILACS-Express | LILACS | ID: lil-669515

RESUMO

Pterodon emarginatus Vogel, Fabaceae, is a tree species commonly known as "sucupira-branca". It is a popular medicinal plant in the Brazilian cerrado (Savanna). This study investigates the chemical variability of the essential oils from fruits of P. emarginatus. The fruits were collected from five sites in the Brazilian Cerrado and their essential oils were analyzed by GC/MS. The results obtained by Principal Component and Cluster Analysis identified two groups: cluster I containing β-caryophyllene and δ-elemene and cluster II containing α-copaene, β-cubebene, allo-aromadendrene, α-cubebene and γ-muurulene. The Canonical Discriminant Analysis was used to differentiate between clusters on the basis of essential oil composition. The results showed high variability in the composition of the essential oils from fruits of P. emarginatus, contributing to studies of domestication of this species.

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