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1Anti-diabetic and anti-cholesterolemic activity of methanol extracts of three species of Amaranthus显示文摘Objective:To investigate the anti-diabetic and anti-cholesterolemic activity of methanol extracts of leaves of Amaranthus caudatus,Amaranthus spinosus and Amaranthus viridis in normal and streptozotocin(STZ) induced diabetic rats.Methods:In this study,the anti-diabetic and anti-cholesterolemic activity of methanol extracts of leaves of all three plants was evaluated by using normal and STZ induced diabetic rots at a dose of 200 mg/kg and 400 mg/kg p.o.daily for 21 days.Blood glucose levels and body weight were monitored at specific intervals,and different biochemical parameters,serum cholesterol,serum triglyceride,high density lipoprotein, low density lipoprotein and very low density lipoprotein were also assessed in the experimental animals.Histology of pancreas was performed.Results:It was found that all the three plants at 400 mg/kg dose showed significant anti-diabetic and anti-cholesterolemic activity(P<0.01),while at 200 mg/kg dose less significant anti-diabetic activity(P<0.05) was observed.Concluslons: Methanol extracts of Amaranthus caudatus,Amaranlhus spinosus and Amaranthus viridis showed significant anti-diabetic and anti-cholesterolemic activity,which provides the scientific proof for their traditional claims.Girija K Lakshman K Udaya Chandrika Sabhya Sachi Ghosh Divya T 2011Asian Pacific Journal of Tropical Biomedicine2011,1,2:14
2Antihyperglycemic and antihyperlipidemic activity of ethyl acetate fraction of Rhododendron arboreum Smith flowers in streptozotocin induced diabetic rats and its role in regulating carbohydrate metabolism显示文摘Objective:To explore and identify the most potent antihyperglycemic fraction from the ethanol extract of Rhododendron arboreum(R.arboreum)flowers.Methods:Normal and streptozotocin induced diabetic rats were treated with all four fractions of R.arboreum flowers for short term and with fraction 3 for long term study.On completion of the treatment,a range of indicators were tested including fasting blood glucose,plasma protein,haemoglobin A1C,insulin secretion,body weight,blood lipid profile and carbohydrate metabolism regulating enzymes of liver.Results:In short term study,the fraction 3(Active fraction)produced a significant(P<0.0001)reduction(73.6%)in blood glucose level at a dose of 200 mg/kg after the treatment in the diabetic rats.Administration of active fraction(200 and 400 mg/kg)once daily for 30 d in streptozotocin diabetic rats resulted in a significant(P<0.001 to P<0.0001)fall in blood glucose level,hemoglobin A1C,serum urea and creatinine with significant but a increase in insulin level similar to standard drug glybenclamide.Further,the active fraction showed antihyperlipidemic activity as evidenced by significant(P<0.001 to P<0.0001)decreases in serum serum total cholesterol,triglycerides,low density lipoprotein cholesterol and very low density cholesterol levels coupled together with elevation of high density lipoprotein cholesterol in the diabetic rats.Conclusions:The active fraction of R.arboreum flowers decreases streptozotocin induced hyperglycemia by promoting insulin secretion and glycolysis and by decreasing gluconeogenesis.Neeraj Verma G Amresh PK Sahu Ch V Rao Anil Pratap Singh 2012Asian Pacific Journal of Tropical Biomedicine2012,2,9:1
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