Lactate dehydrogenase A catalyzes the inter-conversion of pyruvate and L-lactate with concomitant inter-conversion of NADH and NAD+. LDHA is found in most somatic tissues, though predominantly in muscle tissue and tumours, and belongs to the lactate dehydrogenase family. It has long been known that many human cancers have higher LDHA levels compared to normal tissues. It has also been shown that LDHA plays an important role in the development, invasion and metastasis of malignancies. Mutations in LDHA have been linked to exertional myoglobinuria.
Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion. Twenty seven tests were carried out on mutant mice and five significant abnormalities were observed. Few homozygousmutant embryos were identified during gestation, and none survived until weaning. The remaining tests were carried out on heterozygous mutant adult mice. Animals of both sex had abnoraml plasma chemistry, males also had improved glucose tolerance and increased red blood cell distribution width.
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