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Reduction of ACE activity is insufficient to decrease microalbuminuria in normotensive patients with type 1 diabetes
Linkoping Univ Hosp, Dept Med & Care, SE-58185 Linkoping, Sweden.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Health Sciences, Internal Medicine . Östergötlands Läns Landsting, Centre for Medicine, Department of Endocrinology and Gastroenterology UHL.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Health Sciences, Internal Medicine . Östergötlands Läns Landsting, Centre for Medicine, Department of Endocrinology and Gastroenterology UHL.ORCID iD: 0000-0002-1680-1000
2001 (English)In: Diabetes Care, ISSN 0149-5992, Vol. 24, no 5, 919-924 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE - To study whether administration of 1.25 and 5.0 mg ramipril daily, compared with placebo treatment, reduces the urinary albumin excretion rate (UAER) in normotensive patients with type 1 diabetes. RESEARCH DESIGN AND METHODS - Ramipril was administered double blind at two different doses(1.25 [n = 19] and 5.0 mg [n = 18]), and compared with placebo [n = 18] after a single-blind placebo period of 1-4 weeks. The patients (total, n = 55, women, n = 14) were followed for 2 years. To document an effect on the renin-angiotensin system, ACE activity and plasma-renin activity (PRA) were measured. In addition, 24-h ambulatory blood pressure (BP) was recorded at baseline and repeated after 1 and 2 years using a Spacelab 90207 ambulatory BP recording device (Spacelab, Redmont, CA). RESULTS - Both doses of ramipril were sufficient to reduce ACE activity and to increase PRA significantly as compared with placebo (P < 0.05 for both). On the other hand, neither ambulatory nor clinic BP was affected by either dose of ramipril compared with the placebo group. There was no progression of UAER in the placebo group during the 2 years of the study. Analysis of covariance showed no differences in UAER between the three treatment groups at year 1 (P = 0.94) or year 2 (P = 0.97), after adjusting for baseline. Furthermore, there were no statistically significant changes from baseline UAER within any of the three treatment groups. CONCLUSIONS - Treatment with ramipril did not affect microalbuminuria or clinic or ambulatory BP in this study. On the basis of the present study, we question the clinical use of ACE inhibitors in stably normotensive patients with type 1 diabetes and microalbuminuria in whom a concomitant reduction in BP is not demonstrated.

Place, publisher, year, edition, pages
2001. Vol. 24, no 5, 919-924 p.
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Medical and Health Sciences
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URN: urn:nbn:se:liu:diva-49297OAI: oai:DiVA.org:liu-49297DiVA: diva2:270193
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2013-09-10

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Lindström, TorbjörnNyström, Fredrik

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