A study of the determination of glucuronic acid by the naphthoresorcinol reaction, with the photoelectric absorptiometer

Abstract

Although these experiments are far from com- plete, it appears possible from the data obtained that histaminase might play an important part at the onset and during labour. It may be suggested that histaminase, which is very effective in the placenta during pregnancy, might become inhibited at the end of pregnancy by the action of some compounds, possibly the sex hormones, which are known to play an important role at the onset of labour. It may be recalled that in 1937 SUMMARY 1. The activity of the histaminase in the sera and placentae of pregnant women has been studied with two different substrates, cadaverine and hist- amine, in parallel tests.