lactic acid dehydrogenase


Also found in: Dictionary, Acronyms, Encyclopedia.
Related to lactic acid dehydrogenase: lactate dehydrogenase test

lac·tate de·hy·dro·gen·ase (LDH),

name for a number of enzymes, including: l-lactate dehydrogenase (cytochrome), d-lactate dehydrogenase (cytochrome), l-lactate dehydrogenase, and d-lactate dehydrogenase. The first two enzymes transfer hydrogen to ferricytochrome c or to cytochrome b2, the last two transfer it to NAD+, in catalyzing the oxidation of lactate to pyruvate; the isozyme distribution of heart and muscle lactate dehydrogenase is of significant use in cases of myocardial infarction; a deficiency of a subunit will result in myoglobinuria after intense exercise.

lactic acid dehydrogenase

Lactate dehydrogenase, a name for four enzymes:
(1) l-Lactate dehydrogenase (cytochrome), EC 1.1.2.3; 
(2) d-Lactate dehydrogenase (cytochrome), EC 1.1.2.4;
(3) l-Lactate dehydrogenase, EC 1.1.1.27; and
(4) d-Lactate dehydrogenase, EC 1.1.1.28;