The Effects of Trimazosin and Pindolol on Serum Lipids, Blood Glucose and Serum Insulin Levels

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Abstract
The effects on plasma lipids, blood glucose and serum insulin levels of oral administration of trimazosin and pindolol over a 6-month period were studied in 11 patients with essential hypertension. Total plasma cholesterol and LDL cholesterol concentrations were higher (p < 0.05) after one month''s treatment with trimazosin than basal values, but the significance of changes disappeared with continuation of treatment. The concentrations of plasma triglycerides, VLDL cholesterol, HDL cholesterol and free fatty acids and the HDL cholesterol/total cholesterol ratio remained about constant during treatment with trimazosin. During pindolol treatment the plasma levels of total cholesterol and LDL cholesterol were slightly but not significantly lowered at 3 and 6 months. The levels of plasma triglycerides, VLDL cholesterol and HDL cholesterol remained about constant and the ratio of HDL cholesterol to total cholesterol had increased slightly (p < 0.05) at 3 months. Serum free fatty acid concentration decreased significantly. There were no significant differences between plasma lipid levels during either trimazosin or pindolol treatment. Blood glucose concentrations showed a slight tendency to increase during the treatment periods, but no impairment in insulin release was found.