@article{Daiber2005-12-30Hydra-38762,
  year={2005},
  doi={10.1016/j.bbrc.2005.10.106},
  title={Hydralazine is a powerful inhibitor of peroxynitrite formation as a possible explanation for its beneficial effects on prognosis in patients with congestive heart failure},
  number={4},
  volume={338},
  issn={0006-291X},
  journal={Biochemical and Biophysical Research Communications : BBRC},
  pages={1865--1874},
  author={Daiber, Andreas and Oelze, Matthias and Coldewey, Meike and Kaiser, K. and Huth, C. and Schildknecht, Stefan and Bachschmid, Markus and Nazirisadeh, Y. and Ullrich, Volker and Mülsch, Alexander and Münzel, Thomas and Tsilimingas, N.}
}

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    <dc:contributor>Nazirisadeh, Y.</dc:contributor>
    <dc:contributor>Kaiser, K.</dc:contributor>
    <dc:creator>Huth, C.</dc:creator>
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    <dcterms:abstract xml:lang="eng">The hemodynamic and anti-ischemic effects of nitroglycerin (GTN) are rapidly blunted as a result of the development of nitrate tolerance. Hydralazine has been shown to prevent tolerance in experimental and clinical studies, all of which may be at least in part secondary to antioxidant properties of this compound. The antioxidant effects of hydralazine were tested in cell free systems, cultured smooth muscle cells, isolated mitochondria, and isolated vessels. Inhibitory effects on the formation of superoxide and/or peroxynitrite formation were tested using lucigenin and L-012 enhanced chemiluminescence as well as DHE-fluorescence. The peroxynitrite scavenging properties were also assessed by inhibition of nitration of phenol. Prevention of impairment of NO downstream signaling and GTN bioactivation was determined by measurement of P-VASP (surrogate parameter for the activity of the cGMP-dependent kinase-I, cGK-I) and mitochondrial aldehyde dehydrogenase (ALDH-2) activity. Hydralazine dose-dependently decreased the chemiluminescence signal induced by peroxynitrite from SIN-1 and by superoxide from HX/XO in a cell free system, by superoxide in smooth muscle cells and mitochondria acutely challenged with GTN. Moreover, hydralazine inhibited the peroxynitrite-mediated nitration of phenols as well as proteins in smooth muscle cells in a dose-dependent fashion. Finally, hydralazine normalized impaired cGK-I activity as well as impaired vascular ALDH-2 activity. Our results indicate that hydralazine is a highly potent radical scavenger. Thus, the combination with isosorbide dinitrate (ISDN) will favorably influence the nitroso-redox balance in the cardiovascular system in patients with congestive heart failure and may explain at least in part the improvement of prognosis in patients with chronic congestive heart failure.</dcterms:abstract>
    <dc:creator>Nazirisadeh, Y.</dc:creator>
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    <dc:creator>Münzel, Thomas</dc:creator>
    <dc:contributor>Schildknecht, Stefan</dc:contributor>
    <dc:contributor>Bachschmid, Markus</dc:contributor>
    <dc:contributor>Tsilimingas, N.</dc:contributor>
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    <dc:creator>Daiber, Andreas</dc:creator>
    <dc:contributor>Mülsch, Alexander</dc:contributor>
    <dc:contributor>Coldewey, Meike</dc:contributor>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2017-05-08T08:03:39Z</dc:date>
    <dc:contributor>Huth, C.</dc:contributor>
    <dc:creator>Mülsch, Alexander</dc:creator>
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    <dc:creator>Coldewey, Meike</dc:creator>
    <dc:contributor>Oelze, Matthias</dc:contributor>
    <dc:contributor>Ullrich, Volker</dc:contributor>
    <dcterms:issued>2005-12-30</dcterms:issued>
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