Nephron
Original Paper
Features of Gentamicin Nephrotoxicity and Effect of Concurrent Cephalothin in the RatSugarman A. · Brown R.S. · Silva P. · Rosen S.Charles A. Dana Research Institute and the Harvard-Thorndike Laboratory of the Departments of Medicine and Pathology, Beth Israel Hospital, Boston, Mass., USA
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Article / Publication Details
Accepted: December 20, 1982
Published online: December 03, 2008
Issue release date: 1983
Number of Print Pages: 9
Number of Figures: 0
Number of Tables: 0
ISSN: 1660-8151 (Print)
eISSN: 2235-3186 (Online)
For additional information: https://www.karger.com/NEF
Abstract
Sprague-Dawley rats given gentamicin from 10 to 70 mg/kg/day for 9 days showed a linear decrease in glomerular filtration rate with increasing dose, paralleled by histologic changes of acute tubular necrosis and cast formation only at the higher doses. Nephrotoxicity was correlated with the peak, rather than trough, serum gentamicin levels in this study, suggesting that it is the mean level of gentamicin over time that determines renal injury. The polyuria caused by gentamicin resulted mainly from a tubular concentrating defect rather than enhanced sodium or osmolal excretion and may be explained by the finding of a predominance of casts in the medullary thin limbs of the loops of Henle. No effect of gentamicin on the activity of cortical or medullary sodium-potassium adenosine triphosphatase was found to account for the modest sodium wasting. Concurrent administration of sodium1 cephalothin decreased the renal toxicity of gentamicin at high doses, an effect not explained by the added sodium or nonreabsorbable anion.
© 1983 S. Karger AG, Basel
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Article / Publication Details
Accepted: December 20, 1982
Published online: December 03, 2008
Issue release date: 1983
Number of Print Pages: 9
Number of Figures: 0
Number of Tables: 0
ISSN: 1660-8151 (Print)
eISSN: 2235-3186 (Online)
For additional information: https://www.karger.com/NEF
Copyright / Drug Dosage / Disclaimer
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.
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