Diabetes Care, Vol 11, Issue 10 850-853, Copyright © 1988 by American Diabetes Association
Comparative effect of captopril and nifedipine in normotensive patients with incipient diabetic nephropathy
A Mimran, A Insua, J Ribstein, J Bringer and L Monnier
Department of Medicine, Centre Hospitalier Universitaire, Montpellier, France.
In these studies, the effect of a 6-wk treatment by placebo, the
calcium-channel blocker nifedipine, or the converting-enzyme inhibitor
captopril was assessed in normotensive patients with insulin-dependent
diabetes and incipient nephropathy. In response to captopril and
nifedipine, arterial pressure decreased slightly and to a similar extent.
These drugs resulted in opposite effects on urinary excretion of albumin
[i.e., increase in urinary albumin excretion (UAE) by 40% during nifedipine
treatment and decrease by 40% during captopril treatment]. No change in UAE
was observed in the placebo group. This observation of opposite changes in
UAE in the presence of a similar fall in arterial pressure suggests that
the effects of captopril and nifedipine on UAE result from some difference
in their intrarenal action. The data do not present recommendations for the
use or disuse of captopril or nifedipine in such a group of patients and do
not allow extrapolation to hypertensive diabetic subjects well controlled
by other conventional antihypertensive agents.