LDHA and preeclampsia: The isoenzymes profile indicates that preeclampsia and eclampsia are associated with a shift in the pattern and decrease in the aerobic forms of the enzymes, probably due to induction of LDH A gene and/or repression of LDH B gene by hypoxia, pattern changes in maternal serum appear concordant with changes in cord blood, indicating the maternal isoenzyme pattern to be a specific and reliable predictor of the developing hypoxia even when total LDH values seem inconclusive.