A exposição crônica à radiação solar pode contribuir para o aparecimento do câncer de pele, sendo o uso de fotoprotetores um fator primordial na prevenção desses efeitos deletérios. Atualmente, substâncias bioativas tais como a rutina têm sido foco de interesse da comunidade científica graç...
Malheiros, Camila Krüger Cardoso;
Silva, Joyce Sayonara Barbosa;
Hofmann, Tânia Cristiane;
Messina, Thiane Martins;
Manfredini, Vanusa;
Piccoli, Jacqueline da Costa Escobar;
Faoro, Débora;
Oliveira, Luís Flávio Souza;
Machado, Michel Mansur;
Farias, Fabiane Moreira.
ABSTRACT The bark tea of Ceiba speciosa, a tropical tree of the Malvaceae family, is used in the Northwestern Region of Rio Grande do Sul state, Brazil, to reduce blood cholesterol levels. However, there are no scientific data on the efficacy and safety of this plant. The aim of the present study was to ...
Chiari-Andréo, Bruna Galdorfini;
Trovatti, Eliane;
Marto, Joana;
Almeida-Cincotto, Maria Gabriela José de;
Melero, Ana;
Corrêa, Marcos Antonio;
Chiavacci, Leila Aparecida;
Ribeiro, Helena;
Garrigues, Teresa;
Isaac, Vera Lucia Borges.
ABSTRACT Guava (Psidium guajava L.) is a native fruit of the American tropics with commercial applications for its taste, flavor and aroma. Numerous pharmacological uses have been described for it, such as the antiseptic effect of its leaves, the use of the fresh fruit and tea from its leaves for the tre...
ABSTRACT The purpose of this study was to evaluate the antiproliferative and antigenotoxic activity of Sambucus australis Cham. & Schltdl. aqueous extracts on the cell cycle of Allium cepa L. as well as determine the phenolic compounds in such extracts. S. australis inflorescences and leaves of two a...
Adoxaceae/química,
Antioxidantes/análisis,
Antioxidantes/farmacología,
Flavonoides/química,
Fenoles/análisis,
Fitoquímicos/análisis,
Extractos Vegetales/química,
Extractos Vegetales/farmacología,
Hojas de la Planta/química,
Sambucus/química,
Agua/análisis
Abstract:Vismia genus is distributed mainly in tropical and subtropical regions of Central, South America and some areas of Africa. According to previous investigations, antioxidant potential of Vismia species might be related to anthrones, anthraquinones, flavonoids and phenol derivatives biosynthesized...
Análisis de Varianza,
Antioxidantes/análisis,
Compuestos de Bifenilo,
Clusiaceae/química,
Flavonoides/análisis,
Depuradores de Radicales Libres/análisis,
Indicadores y Reactivos,
Metanol/química,
Fenol/análisis,
Fitoquímicos/análisis,
Picratos,
Extractos Vegetales/química,
Valores de Referencia,
Venezuela
Abstract:The marine angiosperm Thalassia testudinum, commonly known as turtle grass, is a dominant sea- grass that grows in the Caribbean Sea shelf associated to Syringodium filiforme. The hydroalcoholic extract of T. testudinum is rich in polyphenols; the most abundant metabolite in this extract is thal...
Antocianinas/análisis,
Antioxidantes/análisis,
Carbohidratos/análisis,
Clorofila/análisis,
Flavonoides/análisis,
Hydrocharitaceae/química,
Extractos Vegetales/química,
Polifenoles/análisis,
Valores de Referencia,
Estaciones del Año,
Espectrofotometría/métodos,
Factores de Tiempo
Abstract Phenolic compounds are a group of plant secondary metabolites known to have a variety of bioactivities, including the ability to function as antioxidants. Because of the side effects of the use of synthetic substances, the search for natural and less toxic compounds has increased significantly. ...
ABSTRACT Influence of high-dose gamma radiation and particle size on antioxidant properties of maize (Zea mays L.) flour was studied using response surface methodology. A central composite design based on three levels of each of particle size, in terms of mesh number (40, 60 and 80 meshes), and gamma ra...
ABSTRACT PURPOSE: To assess antioxidant effects of açaí seed extract on anorexia-cachexia induced by Walker-256 tumor. METHODS: A population of 20 lab rats were distributed into four groups (n=5): Control Group (CG), which only received tumor inoculation. Experimental Group-100 (EG-100), with anima...
Anorexia/tratamiento farmacológico,
Antioxidantes/farmacología,
Caquexia/tratamiento farmacológico,
Euterpe/química,
Extractos Vegetales/uso terapéutico,
Semillas/química,
Análisis de Varianza,
Anorexia/etiología,
Antioxidantes/análisis,
Caquexia/etiología,
Carcinoma 256 de Walker/complicaciones,
Corteza Cerebral/enzimología,
Peroxidación de Lípido/efectos de los fármacos,
Neoplasias Experimentales/complicaciones,
Estrés Oxidativo/efectos de los fármacos,
Extractos Vegetales/farmacología,
Ratas Wistar,
Síndrome,
Sustancias Reactivas al Ácido Tiobarbitúrico/metabolismo
ABSTRACT Purpose: To evaluate lenticular oxidative stress in rat menopausal models. Methods: Forty Wistar female albino rats were included in this study. A total of thirty rats underwent oophorectomy to generate a menopausal model. Ten rats that did not undergo oophorectomy formed the control group (Gr...
Antioxidantes/análisis,
Antioxidantes/metabolismo,
Catarata/etiología,
Catarata/metabolismo,
Diabetes Mellitus Experimental/metabolismo,
Glucocorticoides/farmacología,
Cristalino/metabolismo,
Menopausia/metabolismo,
Metilprednisolona/farmacología,
Modelos Animales,
Ovariectomía,
Oxidantes/metabolismo,
Estrés Oxidativo/fisiología,
Ratas Wistar,
Valores de Referencia,
Espectrofotometría
