[A case of type 2 diabetes mellitus associated with familial hypercholesterolemia confirming the improvement of blood glucose control by colestimide].

A 65-year-old woman had been treated for type 2 diabetes mellitus, familial hypercholesterolemia and old myocardial infarction. Combination therapy of atorvastatin (40 mg/day), ethyl icosapentate (1,200 mg/day), probucol (500 mg/day) and colestimide (1 g/day) had never reached an ideal low-density lipoprotein cholesterol (LDL-C) level. However the conversion to high dose of colestimide (4 g/day) with the same dose of atorvastatin, ethyl icosapentate, and probucol obviously decreased her LDL-C level from 181.2 mg/dl to 148 mg/dl. Reduction of LDL-C level was also associated with the lowering of glycohemoglobin A1c from 10.7% to 8.7% simultaneously. Challenge tests by the cessation and resumption of only colestimide treatment clearly indicated that colestimide has both cholesterol and blood glucose lowering effect. Her body weight and appetite did not change by colestimide treatment. We think that colestimide therapy might provide a beneficial effect on atherosclerotic disease in diabetes mellitus with dyslipidemia through reduction of cholesterol and blood glucose.