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      Adenovirus-Mediated Gene Transfer of Superoxide Dismutase and Catalase Decreases Restenosis after Balloon Angioplasty


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          Background: Reactive oxygen species (ROS) production increases after injury and potentially contributes to restenosis after angioplasty. We therefore evaluated the effect of adenovirus-mediated gene transfer (Ad) of superoxide dismutase (SOD) and catalase (CAT) on ROS production and restenosis after balloon angioplasty. Methods: O<sub>2</sub><sup>–</sup> and H<sub>2</sub>O<sub>2 </sub>production was quantified in cultured cells after incubation with either LPS or CuSO<sub>4</sub>. Angioplasty and gene transfer were performed in rabbit atherosclerotic iliac arteries. One artery was injected with AdSOD and AdCAT, while the contralateral artery was injected with an adenovirus carrying no transgene, and served as control. Results: ROS production was significantly decreased after adenovirus-mediated gene transfer of SOD and CAT as compared with control. Treated arteries showed less restenosis (32 ± 27 vs. 63 ± 19%, p = 0.003) and less constrictive remodeling (1.2 ± 0.3 vs. 0.9 ± 0.2, p = 0.02) than control arteries. Arteries injected with AdSOD and AdCAT showed better vasoreactivity to acetylcholine (11 ± 4 vs. –1 ± 6%, p < 0.05), lower collagen density (43 ± 16 vs. 53 ± 23%, p = 0.03), and lower inflammatory cell infiltration (22 ± 6 vs. 36 ± 11%, p = 0.04) than control arteries. Conclusions: Our data suggest that adenovirus-mediated gene transfer of SOD and CAT reduced oxidative stress, restenosis, collagen accumulation, and inflammation and improved endothelial function after angioplasty.

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          Most cited references 25

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          Superoxide anion is involved in the breakdown of endothelium-derived vascular relaxing factor.

          Endothelium-derived vascular relaxing factor (EDRF) is a humoral agent that is released by vascular endothelium and mediates vasodilator responses induced by various substances including acetylcholine and bradykinin. EDRF is very unstable, with a half-life of between 6 and 50 s, and is clearly distinguishable from prostacyclin. The chemical structure of EDRF is unknown but it has been suggested that it is either a hydroperoxy- or free radical-derivative of arachidonic acid or an unstable aldehyde, ketone or lactone. We have examined the role of superoxide anion (O-2) in the inactivation of EDRF released from vascular endothelial cells cultured on microcarrier beads and bioassayed using a cascade of superfused aortic smooth muscle strips. With this system, we have now demonstrated that EDRF is protected from breakdown by superoxide dismutase (SOD) and Cu2+, but not by catalase, and is inactivated by Fe2+. These findings indicate that O-2 contributes significantly to the instability of EDRF.
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            Oxidative stress and cardiovascular injury: Part I: basic mechanisms and in vivo monitoring of ROS.

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              Oxidative stress and cardiovascular injury: Part II: animal and human studies.


                Author and article information

                J Vasc Res
                Journal of Vascular Research
                S. Karger AG
                June 2005
                03 June 2005
                : 42
                : 3
                : 255-265
                European Georges Pompidou Hospital, AP-HP, INSERM E00-16, Faculté de Médecine Paris V, Université René Descartes, Paris, France
                85658 J Vasc Res 2005;42:255–265
                © 2005 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: 7, Tables: 1, References: 45, Pages: 11
                Research Paper


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