Influence of Cardiospermum halicacabum leaf extract on membrane-bound ATPases in streptozotocin-induced diabetic rats

Background: Cardiospermum halicacabum L. proved to have anti-inflammatory, antihyperglycemic, antioxidant, antiglycation, analgesic and antipyretic activities. It also has been used in Ayurveda and folk medicine for the treatment of rheumatism, fever and earache.Objective: The present study was aimed to evaluate the effect of Cardiospermum halicacabum leaf extract (CHE) on membrane-bound ATPases in streptozotocin (STZ)-induced diabetic rats.Methods: Diabetes was induced in male albino Wistar rats by intraperitonial administration of STZ (40 mg/kg BW). CHE (200 mg/kg BW) or glibenclamide (600 μg/kg BW) was administered orally once daily for 45 days to normal and STZ-induced diabetic rats.Results: The activities of membrane-bound ATPases such as total ATPase, Na+/K+-ATPase, Mg2+-ATPase and Ca2+-ATPase were significantly decreased in erythrocytes and tissues of STZ-induced diabetic rats. Oral administration of CHE to diabetic rats significantly increased the activities of these enzymes towards near normalcy.Conclusions: Thus, the present study indicates that the beneficial role of membrane-bound ATPases in STZ-induced diabetic rats. The antihyperglycemic, antioxidant and antihyperlipidemic properties of CHE could be helpful to maintain the activities of membrane-bound ATPases in STZ-induced diabetic rats showing the membrane stabilizing property of extract.Keywords: Streptozotocin, blood glucose, diabetes, membrane-bound ATPases, Cardiospermum halicacabu

Morin, A Flavonoid, On Lipid Peroxidation And Antioxidant Status In Experimental Myocardial Ischemic Rats

Background: Myocardial infarction affects a large population in the world. Lipid peroxide metabolism plays an important role in the pathology of myocardial infarction. Objective: The present study was designed to investigate the antioxidant potential of morin, a flavonoid in isoproterenol (ISO)-induced myocardial infarction (MI), in rats.Materials and Methods: Male albino Wistar rats were pre-treated with morin (40 mg/kg), daily for a period of 30 days. After the treatment period, ISO (85 mg/kg), was subcutaneously injected in rats at an interval of 24 h for 2days.Re s u l t s : ISO-administered rats showed elevated levels of thiobarbituric acid reactive substances (TBARS), and lipid hydro-peroxide (LOOH), in plasma and heart. Pretreatment with morin, the above changes were significantly reduced to near normal level. ISOadministered rats showed decrease in the activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and glutathione-S-transferase (GST) in heart. In addition, decrease the levels non enzymatic antioxidants such as reduced glutathione (GSH), vitamin C and vitamin E in plasma and heart while ceruloplasmin in plasma.Conclusion: Pretreatment with morin, reversed these above biochemical changes towards normalcy. These findings revealed that, the morin possess antioxidant activity in experimentally induced cardiac toxicity.Key words: Morin, Isoproterenol, Myocardial infarction, Lipid peroxidation, Antioxidant