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  • Title: Long term use of captopril or nifedipine in normotensive microalbuminuric patients with insulin-dependent diabetes mellitus.
    Author: Bilo H, Kluitman E, van Ballegooie E, Potter van Loon BJ, Bakker K, Michels B, Gans R, Donker A.
    Journal: Diabetes Res; 1993; 23(3):115-22. PubMed ID: 7712685.
    Abstract:
    Several studies have suggested that ACE-inhibition may be effective in postponing the onset of nephropathy in insulin-dependent diabetic subjects. In contrast, other drugs might have opposing effects. To study the long term effects of either captopril or nifedipine in normotensive, microalbuminuric patients with insulin-dependent diabetes mellitus, eighteen subjects received either placebo (n = 5, P), 20 mg nifedipine daily (n = 7, N) or 50 mg captopril daily (n = 6, C) for one year. Baseline clinical and laboratory variables were comparable in the three groups. Glomerular filtration rate (GFR), effective renal plasma flow (ERPF) and blood pressure did not differ between groups before and after one years medication. UAER did not change in the captopril and the placebo group (C: -12.6% (-58.1 to 51.8%)' P: -17.3 (-55.9 to 99.3%), medians and ranges. In contrast, in the patients that received nifedipine, UAER rose by 43.1% (-8.5 to 261.8%), (p < 0.05 Baseline vs one year, and one year nifedipine vs captopril and placebo). We therefore conclude, that long-term use of nifedipine increases UAER in normotensive microalbuminuric insulin-dependent subjects, in contrast to captopril or placebo. Whether this enhancement of microalbuminuria exerts an adverse effect on renal function in the long-term is yet unknown, but caution seems warranted.
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