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      Cardiovascular Effects of Beta-Blockers with and without Intrinsic Sympathomimetic Activity

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          Abstract

          Background: Celiprolol, a newer beta-blocking agent, has been reported to have vasodilatory capacity which may be due to partial beta-2-receptor agonistic activity or to alpha-receptor antagonistic or central sympathoinhibitory effects. Methods: To more critically assess the physiologic effects of celiprolol, we measured sympathetic nerve activity to muscle (MSNA), forearm blood flow (FBF), blood pressure (BP), central venous pressure, and heart rate (HR) in 10 normal volunteers at rest, during unloading of cardiopulmonary baroreceptors with lower body negative pressure (LBNP), and during a cold pressor test (CPT). Responses were compared with those seen with metoprolol and with placebo, i.e. each subject was studied three times. Results: Celiprolol did not alter resting levels of hemodynamics, FBF, and MSNA nor did it alter responses to LBNP or the CPT. In contrast, metoprolol produced significant decreases of FBF and HR, and increases of forearm vascular resistance and BP, but had also no effect on responses to the applied stress tests. Conclusions: The lack of peripheral vasoconstriction seen after acute administration of celiprolol is most likely due to its partial beta-2-receptor agonistic effect and does not seem to be due to a central or reflex action or to an alpha-blocking effect. Both beta-blockers do not impair fundamental neural mechanisms involved in circulatory homeostasis.

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          Cardiac Effects of β-Adrenoceptor Antagonists with Intrinsic Sympathomimetic Activity in Humans: β1- and/or β2-Adrenoceptor Mediated?

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            Release of endothelial nitric oxide in coronary arteries by celiprolol, a β1-adrenoceptor antagonist: possible clinical relevance

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              Effect of atenolol and celiprolol on acetylcholine-induced coronary vasomotion in coronary artery disease

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                Author and article information

                Journal
                KBR
                Kidney Blood Press Res
                10.1159/issn.1420-4096
                Kidney and Blood Pressure Research
                S. Karger AG
                1420-4096
                1423-0143
                2002
                2002
                06 February 2002
                : 25
                : 1
                : 34-41
                Affiliations
                Human Cardiovascular Physiology Laboratory, Medical Clinic IV, Department of Internal Medicine, University of Erlangen-Nuremberg, Erlangen, Germany
                Article
                49433 Kidney Blood Press Res 2002;25:34–41
                10.1159/000049433
                11834875
                2104c4d5-d26d-4cda-9a35-2a23d4102118
                © 2002 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.

                History
                Page count
                Figures: 3, Tables: 1, References: 38, Pages: 8
                Categories
                Original Paper

                Cardiovascular Medicine,Nephrology
                Normal humans,Peripheral blood flow,Intrinsic sympathomimetic activity,Microneurography,Sympathetic nervous system,Beta-blockers

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