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      The Calcium Channel Blocker Nitrendipine Attenuates Renal and Glomerular Hypertrophy in Diabetic Rats

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          Abstract

          The efficacy of the calcium channel blocker nitrendipine in preventing early renal and glomerular hypertrophy and increased urinary albumin excretion (UAE) was studied in experimental diabetes in rats, starting treatment at the onset of diabetes. Female Wistar rats were randomised into four groups: diabetic and non-diabetic rats were given either placebo or nitrendipine (250 mg/kg) in the diet for 8 weeks. After 8 weeks the kidneys in the diabetic animals had increased significantly compared to the non-diabetic controls. In the diabetic nitrendipine-treated animals renal and glomerular hypertrophy was significantly smaller than in the diabetic placebo-treated group (p < 0.05). After an initial increment within the first week, the UAE remained constant throughout the study period in the diabetic nitrendipine-treated animals, while a steady increase was seen in the diabetic placebo-treated group (p < 0.05). No differences were seen in systemic blood pressure between calcium- channel-blocker-treated groups and placebo-treated groups. In conclusion, administration of nitrendipine to diabetic rats for 8 weeks had a significant inhibitory effect on renal and glomerular hypertrophy, and showed a tendency towards a reduction in UAE (p = 0.06) without affecting metabolic control or systemic blood pressure.

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          Most cited references 3

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          The effect of angiotensin-converting-enzyme inhibition on diabetic nephropathy. The Collaborative Study Group.

          Renal function declines progressively in patients who have diabetic nephropathy, and the decline may be slowed by antihypertensive drugs. The purpose of this study was to determine whether captopril has kidney-protecting properties independent of its effect on blood pressure in diabetic nephropathy. We performed a randomized, controlled trial comparing captopril with placebo in patients with insulin-dependent diabetes mellitus in whom urinary protein excretion was > or = 500 mg per day and the serum creatinine concentration was or = 1.5 mg per deciliter, creatinine clearance declined at a rate of 23 +/- 25 percent per year in the captopril group and at a rate of 37 +/- 25 percent per year in the placebo group (P = 0.01). Captopril treatment was associated with a 50 percent reduction in the risk of the combined end points of death, dialysis, and transplantation that was independent of the small disparity in blood pressure between the groups. Captopril protects against deterioration in renal function in insulin-dependent diabetic nephropathy and is significantly more effective than blood-pressure control alone.
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            Estimation of in vivo capillary or venous blood glucose concentration from analysis on stored venous blood or its plasma and use in quality control of near-patient glucose tests

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              The antiproteinuric effect of antihypertensive agents in diabetic nephropathy

               R. Gansevoort (1992)
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                Author and article information

                Journal
                EXN
                Nephron Exp Nephrol
                10.1159/issn.1660-2129
                Cardiorenal Medicine
                S. Karger AG
                1660-2129
                1999
                June 1999
                28 May 1999
                : 7
                : 3
                : 242-250
                Affiliations
                aInstitute of Experimental Clinical Research, M-Laboratory II, and bElectron Microscopy Diabetes Research Laboratory, University Institute of Pathology, Aarhus University Hospital, Aarhus, Denmark
                Article
                20608 Exp Nephrol 1999;7:242–250
                10.1159/000020608
                10352365
                © 1999 S. Karger AG, Basel

                Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                Page count
                Figures: 6, Tables: 1, References: 45, Pages: 9
                Product
                Self URI (application/pdf): https://www.karger.com/Article/Pdf/20608
                Categories
                Original Paper

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