[Studies on the excretion of urinary glycylprolyl dipeptidyl-aminopeptidase (GP-DAP) during normal pregnancy].

Several investigators reported that GP-DAP activity, one of dipeptidyl-aminopeptidases, increased in urine of patients with various renal diseases. In this study, we determined urinary GP-DAP and NAG activities of 165 subjects in normal pregnant women. It was clear that urinary GP-DAP was increased less than NAG with the progress of normal pregnancy. In conclusion, it is suggested that urinary GP-DAP may be a better marker than NAG for the discrimination of renal diseases from normal pregnancy.