To compare the effects of nifedipine and enalapril oncarbohydrate and lipoprotein metabolism in Chinese non-insulin-dependent diabetes mellitus (NIDDM) patients with hypertension.


A 12-week, double blind, ran domized study of plasma lipid levels and glycemie control in patients treated with nifedipine (n = 52) or enalapril (n = 50) was conducted. None of the patients were treated with insulin. Diet and dosages of oral hypoglycemie agents remained unchanged during the 12-week treatment period.


Mean arterial pressure was reduced more by nifedipine than by enalapril (23.1 vs. 11.1 mmHg, P < 0.001). Similar reductions in body mass index and plasma triglycerides and increases in apolipoprotein A-I were seen with both treatments, but HbA1 was reduced more during treatment with enalapril than with nifedipine (0.49 vs. 0.20%, P = 0.035) and serum apolipoprotein B (apoB) also declined more with enalapril than with nifedipine (8.2 vs. 2.3 mg/dl, P = 0.009).


Twelve weeks of treatment with enalapril in hypertensive NIDDM patients was associated with greater improvement in glycemie control and greater reduction in serum apoB concentration, although the reduction in blood pressure was less than with nifedipine. These changes in cardiovascular risk profile warrant investigation for a longer term.

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