No abstract

RESUMO: "Efeitos induzidos por Ruta graveolens L., Rutaceae, Cnidoscolus chayamansa McVaugh, Euphorbiaceae, e Citrus aurantium L., Rutaceae, nos níveis de glucose, colesterol e triacilglicerídeos num modelo do rato diabético". Diversas plantas com propriedades hipoglicêmicas foram usadas na medicina popular e em sistemas tradicionais de curas em torno do mundo. A finalidade deste trabalho foi avaliar os efeitos induzidos por Ruta graveolens L, Rutaceae, Cnidoscolus chayamansa McVaugh, Euphorbiaceae, e Citrus aurantium L., Rutaceae, em modelo do rato diabético onde níveis da glucose foram determinados a cada 24 h em um mês antes da administração gástrica do extrato das plantas. Colesterol e triacilglicerídeos foram avaliados usando técnicas enzimáticas. Os resultados mostraram que a administração de Cnidoscolus chayamansa a dose de 0,5 a 1,5 g/kg induz um aumento hipoglicêmico (< 200 mg/dL). Outros dados indicam que Cnidoscolus chayamansa exerce variações nos níveis de triacilglicerídeos (80-90 mg/dL) e colesterol (88-96 mg/dL). A administração de Citrus aurantium nas mesmas doses não foi suficiente para diminuir os níveis de glucose (> 200 mg/dL). Outros resultados, mostraram que Citrus aurantium exerce mudanças na concentração de triacilglicerídeos (158-172 mg/dL) e colesterol (120-128 mg/dL). Finalmente, a administração de Ruta graveolens na dose de 0.5 g/ kg induziu um efeito hipoglicêmico (< 200 mg/dL). Ruta graveolens, na dose de 0.5 a 1.5 g/kg, induziu variações nos níveis de triacilglicerídeos (110-120 mg/dL) e colesterol (116-124 mg/dL). Em conclusão, a administração de Cnidoscolus chayamansa exerce efeitos hipoglicêmicos numa maneira dose dependente em comparação com Ruta graveolens e Citrus aurantium. As plantas avaliadas induzem mudanças nos níveis de lipídeos dependente da dose.Unitermos: Diabetes, Cnidoscolus chayamansa, Ruta graveolens, Citrus aurantium, Wistar.ABSTRACT: "Induced effects by Ruta graveolens L., Rutaceae, Cnidoscolus chayamansa McVaugh, Euphorbiaceae, and Citrus aurantium L., Rutaceae, on glucose, cholesterol and triacylglycerides levels in a diabetic rat model". Several plants with hypoglycemic properties have been used in folk medicine and traditional healing systems around the world. The purpose of this work was to evaluate the effects of Ruta graveolens L., Rutaceae, Cnidoscolus chayamansa McVaugh, Euphorbiaceae, and Citrus aurantium L., Rutaceae, in a diabetic rat model to which the glucose levels were quantified every 24 hours by one month before of gastric administration of plants extract. Additionally, the cholesterol and triacylglycerides were evaluated using standard enzymatic techniques. The results showed that increases in the dose (0.5 to 1.5 g/kg) of Cnidoscolus chayamansa induce a high hypoglycemic effect (< 200 mg/dL). Another data indicate that Cnidoscolus chayamansa exerts variations in triacylglycerides (80-90 mg/dL) and cholesterol (88-96 mg/dL). Nevertheless, the administration of Citrus aurantium in the same doses was not sufficient for diminish the glucose leve...

No abstract

No abstract

No abstract

No abstract

Several studies indicate that some steroid derivatives have activity at cardiovascular level; nevertheless, there is scarce information about the effects of progesterone and its derivatives on cardiac injury ischemia/reperfusion (I/R). Therefore, in this study, a progesterone derivative was evaluated with the objective of evaluating its activity on I/R in an ischemia-reperfusion model. In addition, molecular mechanism involved in the activity of effect induced by progesterone derivative on perfusion pressure and coronary resistance was assed using the Langendorff technique by measuring left ventricular pressure in the absence or presence of mifepristone, yohimbine, ICI 118,551, atropine, methoctramine and L-NG-nittroarginine methyl esther (L-NAME). The results showed that progesterone derivative reduced infarct size compared with progesterone and control. In addition, it was also observed that the progesterone derivative significantly decreased the perfusion pressure and coronary resistance in isolated heart. Additionally, another set of data indicate that progesterone derivative produces low left ventricular pressure in a dose-dependent manner [0.001 to 100 nM]; however, this phenomenon was significantly inhibited by methoctramine (1 nM) and L-NAME (1 nM). In conclusion, these data suggest that a cardioprotective effect of progesterone derivative is through the interaction with M 2 muscarinic and activation of nitric oxide synthase which may be responsible for the reduction in myocardial necrosis after ischemia and reperfusion.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.