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  • Title: Lipid-lowering effect of simvastatin in patients of type 2 diabetes mellitus.
    Author: Udawat H, Goyal RK.
    Journal: Indian Heart J; 2001; 53(2):172-6. PubMed ID: 11428472.
    Abstract:
    BACKGROUND: Dyslipidemia is an important factor in causation of macrovascular disease in type 2 diabetics. The role of simvastatin in the management of dyslipidemia in patients with type 2 diabetes mellitus is not very well elucidated, particularly in the context of the recent American Diabetes Association criteria 2001. The American Diabetes Association suggests that aggressive therapy of diabetic dyslipidemia will reduce the risk of coronary heart disease in diabetics and that optimal levels are serum low-density lipoprotein cholesterol <2.60 mmol/L (< 100 mg/dl), high-density lipoprotein cholesterol >1.1 5 mmol/L (>45 mg/dl) and triglycerides <2.30 mmol/L, (<200 mg/dl). This study was planned to compare the effect of simvastatin together with behavioral modification and behavioral modification alone, in age, sex and body mass index matched patients with type 2 diabetes mellitus with dyslipidemia, in reaching the target levels of various lipids as suggested by the American Diabetes Association criteria 2001. METHODS AND RESULTS: An open-label, prospective study was conducted on 80 patients with type 2 diabetes mellitus, who had fair to moderate glycemic control with a total glycated hemoglobin < 10%. The patients in the control group (n=40) were treated with only behavioral modifications like calorie control and daily walking for 30 minutes, and no lipid-lowering agent was given. The lipid profile was re-evaluated after 6 and 12 weeks. The patients in the test group (n=40) were advised behavioral modification and given simvastatin. The starting dose was 10 mg at bed time. After 6 weeks of simvastatin therapy, a lipid profile was done. If the goal of low-density lipoprotein cholesterol < 100 mg/dl and/or triglycerides <200 mg/dl and/or high-density lipoprotein cholesterol >45 mg/dl was not achieved, the dose of simvastatin was increased to 20 mg at bedtime for another 6 weeks. It was observed that low-density lipoprotein dyslipidemia was most prevalent. In the control group, a favorable alteration in lipid levels was brought about but none was statistically significant and the American Diabetes Association goals were not achieved in any of the patients. In the test group, there was a significant and favorable alteration in all lipid moieties, and the target levels were achieved in 80% of patients after 12 weeks. There was no significant alteration in glycemic control and liver functions. Myopathy and epigastric pain were seen in 1 patient in each group. CONCLUSIONS: In our study, behavioral modification alone did not achieve the target levels of various lipids in diabetic dyslipidemia as per the American Diabetes Association guidelines. Hence, pharmacological therapy with statins should be resorted to in patients with type 2 diabetes mellitus who carry a high risk of coronary heart disease. Simvastatin is a safe and efficacious lipid-lowering drug.
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