Table 2.

Tryptophan and kynurenine concentrations and the ratio of kynurenine to tryptophan in plasma from women with pre-eclampsia or normal pregnancies and from non-pregnant women [28]

Concentrations of tryptophan and kynurenine in plasma were analysed by high-performance liquid chromatography. Values are given as mean ± standard deviation.

^a)P <0.001 compared with normal pregnancy (Wilcoxon test); ^b)P <0.001 compared with pre-eclampsia (Mann-Whitney U test); ^c)p<0.001 compared with normal pregnancy (Mann-Whitney U test).