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BackgroundMelastoma malabathricum (MM) Linn leaves traditionally use in the treatment of diabetic conditions. The aim of the present investigation was to evaluate the antioxidant, antihyperlipidemic and antidiabetic activity of methanolic extract taken from Melastoma malabathricum Linn (Melastomaceae).MethodsThe methanolic leaves extract of MM Linn leaves used for the study. Chemical test of different extract, acute toxicity study and oral glucose test was performed. Diabetes was induced in rat by single intra-peritoneal injection of streptozotocin (55 mg/kg). The rats were divided into following groups: Group I – normal control, Group II (Vehicle) – diabetic control, Group III (STZ-toxic) – MM I (100 mg/kg, p.o.), Group IV – MM II (250 mg/kg, p.o.), Group V – MM III (500 mg/kg, p.o.), Group VI – glibenclamide (10 mg/kg, p.o.). Bodyweight of each rat in the different groups was recorded daily. Biochemical and antioxidant enzyme parameters were determined on day 28. Histology of different organ (heart, liver, kidney, and pancreas) was performed after sacrificing the rats with euthanasia.ResultsThe methanolic extract of MM did not show any acute toxicity up-to the dose of 2000 mg/kg and shown better glucose utilization in oral glucose tolerance test. Orally treatment of different doses of MM leaves extract decreased the level of serum glucose, glycated hemoglobin, glucose-6-phosphatase, fructose-1-6-biphosphate and increased the level of plasma insulin, hexokinase. MM treatment decreased liver malondialdehyde but increased the level of superoxide dismutase, catalase and glutathione peroxidase. In oral glucose tolerance test observed increased utilization of glucose. Streptozotocin induced diabetes groups rat treated with different doses of MM leaves extract and glibenclamide significantly increased the body weight. Histopathology analysis on different organ of STZ (streptozotocin) induced diabetic rat show there regenerative effect on the liver, kidney, heart and pancreas.ConclusionThe antioxidant, antihyperlipidemic and antidiabetic effect of methanolic extract from Melastoma malabathricum Linn suggests a potential therapeutic treatment to antidiabetic conditions.

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BackgroundAegle marmelos (L.) Corr. (Rutaceae), commonly known as bael, is used to treat fevers, abdomen pain, palpitation of the heart, urinary troubles, melancholia, anorexia, dyspepsia, diabetes and diarrhea in Indian traditional systems of medicine. The object of the present study was to evaluate the antidiabetic, antihyperlipidemic and antioxidant oxidative stress of umbelliferone β-D-galactopyranoside (UFG) from stem bark of Aegle marmelos Correa. in STZ (streptozotocin) induced diabetic rat.MethodsDiabetes was induced in rat by single intraperitoneal injection of STZ (60 mg/kg). The rat was divided into the following groups; I – normal control, II – diabetic control, III – UFG (10 mg/kg), IV – UFG (20 mg/kg), V – UFG (40 mg/kg), VI – Glibenclamide (10 mg/kg, p.o., once a daily dose). Diabetes was measured by change the level blood glucose, plasma insulin and the oxidative stress were assessed in the liver by estimation of the level of antioxidant markers i.e. superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) and Malondialdehyde (MDA) and antihyperlipidemic effect was measured by estimation of total cholesterol, triglycerides, LDL (low density lipoprotein) cholesterol, HDL (high density lipoprotein) cholesterol, VLDL (very low density lipoprotein) cholesterol. However in a study, the increased body weight was observed and utilization of glucose was in the oral glucose tolerance test.ResultDaily oral administration of different dose of UFG for 28 days showed significantly (P < 0.001) decreased in fasting blood glucose level and improve plasma insulin level as compared to the diabetic control group. Also it significantly (P < 0.001) decreased the level of glycated hemoglobin, glucose-6-phosphatase, fructose-1-6-biphosphate and increased the level of hexokinase. UFG treatment decreased liver MDA and increased the level of SOD, GPx and CAT. UFG treatment of lipids it’s increased the level of cholesterol, triglycerides, VLDL, LDL cholesterol and decreased the level of HDL cholesterol. Histologically, inflammatory cell in blood vessels, intercalated disc, fat degeneration and focal necrosis observed in diabetic rat organ but was less obvious in UFG treated groups. The mechanism of action of UFG may be due to the increased level of pancreatic insulin secretion and effect on the antioxidant marker.ConclusionUFG posses an antidiabetic, antioxidant and antihyperlipidemic effect on the STZ induced diabetic rat. Hence it could be the better choice to cure the diabetes.

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