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      Differential Effects of D 600 on Contractile Response of Aorta and Portal Vein from Spontaneously Hypertensive Rats

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          Abstract

          To examine if Ca handling by vascular smooth muscles is altered in hypertension, the in vitro effect of D 600 was determined on noradrenaline-induced contractions of aortic and portal vein strips from spontaneously hypertensive rats (SHR) and Wistar Kyoto normotensive rats (WKY). In low (0.2 and 0.4 mM) Ca solutions, D 600 reduced the response to noradrenaline to a greater extent in aortic strips from SHR than in strips from WKY. In contrast, D 600 had less effect on the response to noradrenaline in portal vein strips from SHR than in strips from WKY in both normal and low Ca. Thus, portal veins from SHR are less dependent on external Ca compared to portal veins from WKY whereas aortae from SHR are more dependent on external Ca compared to aortae from WKY.

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          Author and article information

          Journal
          JVR
          J Vasc Res
          10.1159/issn.1018-1172
          Journal of Vascular Research
          S. Karger AG
          1018-1172
          1423-0135
          1981
          1981
          19 September 2008
          : 18
          : 3
          : 120-127
          Affiliations
          Department of Pharmacology, Faculty of Medicine, University of British Columbia, Vancouver, B.C., Canada
          Article
          158344 Blood Vessels 1981;18:120–127
          10.1159/000158344
          © 1981 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
          Pages: 8
          Categories
          Research Paper

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