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Single dose treatment with PARP-inhibitor INO-1001 improves aging-associated cardiac and vascular dysfunction.

Single dose treatment with PARP-inhibitor INO-1001 improves aging-associated cardiac and vascular dysfunction. Research Abstract Details 

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  • Single dose treatment with PARP-inhibitor INO-1001 improves aging-associated cardiac and vascular dysfunction. Abstract Text:

     radovits Radovits,leila seresLeila Seres,domokos geroDomokos Gero,irina bergerIrina Berger,csaba Csaba ,matthias karckMatthias Karck, , radovits Radovits,leila seresLeila Seres,domokos geroDomokos Gero,irina bergerIrina Berger,csaba Csaba ,matthias karckMatthias Karck, ,

    Overproduction of reactive oxygen species in aging tissues has been implicated in the pathogenesis of aging-associated cardiovascular dysfunction. Oxidant-induced DNA-damage activates the poly(ADP-ribose) polymerase (PARP) pathway, leading to tissue injury. In this study we investigated the acute effects of the PARP inhibitor INO-1001 on aging-associated cardiac and endothelial dysfunction. Using a pressure-volume conductance catheter, left ventricular pressure-volume analysis of young and aging rats was performed before and after a single injection of INO-1001. Endothelium-dependent and -independent vasorelaxation of isolated aortic rings were investigated by using acetylcholine and sodium nitroprusside. Aging animals showed a marked reduction of myocardial contractility and endothelium-dependent relaxant responsiveness of aortic rings. Single dose INO-1001-treatment resulted in acute improvement in their cardiac and endothelial function. Immunohistochemistry for nitrotyrosine and poly(ADP-ribose) confirmed enhanced nitro-oxidative stress and PARP-activation in aging animals. Acute treatment with INO-1001 decreased PARP-activation, but did not affect nitrotyrosine-immunoreactivity. Our results demonstrate that the aging-associated chronic cardiovascular dysfunction can be improved, at least, short term, by a single treatment course with a PARP-inhibitor, supporting the role of the nitro-oxidative stress -- PARP -- pathway in the age-related functional decline of the cardiovascular system. Pharmacological inhibition of PARP may represent a novel therapeutic utility to improve aging-associated cardiovascular dysfunction.

    Single dose treatment with PARP-inhibitor INO-1001 improves aging-associated cardiac and vascular dysfunction. Publishing Authors By Initials

    t radovitsT Radovits,l seresL Seres,d geroD Gero,i bergerI Berger,c C ,m karckM Karck,g G ,t radovitsT Radovits,l seresL Seres,d geroD Gero,i bergerI Berger,c C ,m karckM Karck,g G ,

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    Single dose treatment with PARP-inhibitor INO-1001 improves aging-associated cardiac and vascular dysfunction. Journal Published:

    PUBLICATION TYPE: Research Support, Non-U.S. Gov

    Journal: Experimental gerontology

    VOLUME: 42

    Page Numbers: 676-85

    Journal Abbreviation: Exp. Gerontol.

    ISSN: 0531-5565

    DAY: 20

    MONTH: 02

    YEAR: 2007

    Single dose treatment with PARP-inhibitor INO-1001 improves aging-associated cardiac and vascular dysfunction. Information

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    LANGUAGE: eng

    NlmUniqueID: 47061

    Single dose treatment with PARP-inhibitor INO-1001 improves aging-associated cardiac and vascular dysfunction. Keywords Mesh Terms:

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    Grant and Affiliation Information for Single dose treatment with PARP-inhibitor INO-1001 improves aging-associated cardiac and vascular dysfunction.

    AFFILIATION: Department of Cardiac Surgery, University of Heidelberg, INF 326 OG 2, Heidelberg, Germany. radovitstamas@yahoo.com

    Country: England

    England Research PublicationEngland Research Publication

    AGENCY: United States NIGMS

    GRANT: R01 GM060915

    ACRONYM: GM

    MEDLINETA: Exp Gerontol

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