Effect ofOcimum sanctum (Tulsi) and vitamin E on biochemical parameters and retinopathy in streptozotocin induced diabetic rats |
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| Authors: | Eshrat M Halim A K Mukhopadhyay |
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| Institution: | (1) Department of Laboratory Medicine, All India Institute of Medical Sciences, Ansari Nagar, 110029 New Delhi, India |
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| Abstract: | This study was carried out to see the effect of the aqueous extract ofOcitum sanctum Linn (Tulsi) with Vitamin E on biochemical parameters and retinopathy in the streptozotocin-induced diabetic albino male
rats. Adult albino male rats weighing 150–200 gm were made diabetic by intraperitoneal injection of streptozotocin in the
dose 60 mg/kg in citrate buffer (pH 6.3). The diabetic animals were left for one month to develop retinopathy. Biochemical
parameters like plasma glucose, oral glucose tolerance and glycosylated hemoglobin HbA1c, were measured along with lipid profile, and enzymes like glutathione peroxidase (GPX), lipid peroxidase (LPO), superoxide
dismutase (SOD), catalase (CAT) and glutathione-S-transferase (GST) in normal, untreated diabetic rats and diabetic rats treated
withOcimum sanctum L extracts and vitamin E. Fluorescein angiography test was done for assessing retinopathy. Results on biochemical parameters
were analyzed statistically by using ANOVA followed by Dunnet's ‘t’-test. A p-value of <0.05 was considered as significant.
Evaluation of biochemical profile in treated groups showed statistically significant reduction in plasma levels of glucose,
HbA1c, lipid profile and LPO, and elevation of GPX, SOD, CAT and GST. Treatment of the diabetic animals withOcimum sanctum and Vitamin E, alone and in combination for 16 weeks showed reversal of most of the parameters studied including plasma glucose
levels. Angiography showed improvement in retinal changes following combined antidiabetic treatment. |
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| Keywords: | Ocimum sanctum Vitamin E Diabetes mellitus Diabetic retinopathy Lipid peroxidation Antioxidants |
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