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Cardioprotective activity of a novel and potent competitive inhibitor of lactate dehydrogenase.


ABSTRACT: Alkaline incubation of NADH results in the formation of a very potent inhibitor of lactate dehydrogenase. High resolution mass spectroscopy along with NMR characterization clearly showed that the inhibitor is derived from attachment of a glycolic acid moiety to the 4-position of the dihydronicotinamide ring of NADH. The very potent inhibitor is competitive with respect to NADH. The inhibitor added in submicromolar concentrations to cardiomyocytes protects them from damage caused by hypoxia/reoxygenation stress. In isolated mouse hearts, addition of the inhibitor results in a substantial reduction of myocardial infarct size caused by global ischemia/reperfusion injury.

SUBMITTER: Kotlyar AB 

PROVIDER: S-EPMC2794998 | biostudies-literature | 2010 Jan

REPOSITORIES: biostudies-literature

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Cardioprotective activity of a novel and potent competitive inhibitor of lactate dehydrogenase.

Kotlyar Alexander B AB   Randazzo Antonio A   Honbo Norman N   Jin Zhu-Qui ZQ   Karliner Joel S JS   Cecchini Gary G  

FEBS letters 20100101 1


Alkaline incubation of NADH results in the formation of a very potent inhibitor of lactate dehydrogenase. High resolution mass spectroscopy along with NMR characterization clearly showed that the inhibitor is derived from attachment of a glycolic acid moiety to the 4-position of the dihydronicotinamide ring of NADH. The very potent inhibitor is competitive with respect to NADH. The inhibitor added in submicromolar concentrations to cardiomyocytes protects them from damage caused by hypoxia/reoxy  ...[more]

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