RESUMO
Two flavonoid compounds, viz. 5,7-dimethyl ether of leucopelargonidin 3-0-alpha-L rhamnoside and 5,3'-dimethyl ether of leucocyanidin 3-0-alpha-D galactosyl cellobioside obtained from the bark of F. bengalensis were evaluated for their antioxidant action in hyperlipidemic rats. The results were compared with the activity of a structurally similar flavonoid, quercetin, a known antioxidant. The Ficus compounds showed significant antioxidant effects which may be attributed to their polyphenolic nature. The methylation of two hydrozyl groups in the Ficus flavonoids might have slowed down their antioxidant action as compared to quercetin.
Assuntos
Animais , Antocianinas , Antioxidantes/isolamento & purificação , Celobiose/análogos & derivados , Cromanos/isolamento & purificação , Flavonoides/isolamento & purificação , Hiperlipidemias/tratamento farmacológico , Peroxidação de Lipídeos/efeitos dos fármacos , Masculino , Manosídeos/isolamento & purificação , Quercetina/farmacologia , Ratos , Ratos Sprague-Dawley , Rosales/química , Árvores/químicaRESUMO
Garlic (Allium sativum Linn.) is ascribed with many therapeutic effects. For the present study, the water soluble proteins and the essential oil of garlic were investigated for their hypolipidemic effect on hyperlipidemia induced by cholesterol containing diet in albino rats. Both garlic protein (16% of diet) and garlic oil (100 mg/kg body weight/day) exhibited significant lipid lowering effects. The hypolipidemic action is primarily due to a decrease in hepatic cholesterogenesis in the treated rats. Even though garlic oil was found to be more effective, the garlic protein is more palatable and free from an obnoxious smell.
Assuntos
Compostos Alílicos , Animais , Dieta , Alho/química , Lipídeos/sangue , Masculino , Óleos de Plantas/farmacologia , Proteínas de Plantas/farmacologia , Plantas Medicinais , Ratos , Ratos Sprague-Dawley , Sulfetos/farmacologiaRESUMO
Dimethoxy ether of Leucopelargonidin-3-0-alpha-L rhamnoside isolated from the bark of the Indian Banyan tree Ficus bengalensis Linn. was tested for antidiabetic effect. At a medium effective dose (100 mg/kg) on oral administration, the compound showed significant hypoglycemic and serum insulin raising action in normal as also moderately diabetic dogs (induced by alloxan) during a period of two hours. The mechanism of action of the glycoside compound seems to be similar to that of drugs which stimulate insulin secretion. On acute and chronic administration in single doses of 0.2-1.8 g/kg to different groups of mice and daily administration of 100, 250 and 500 mg/kg to rats for a period of one month respectively did not show any toxic effect and the compound was not lethal even at the high dose of 1.8 g/kg in experimental animals.