Table 3. Maternal and Umbilical Venous TBARS, Selenium Concentrations, and GPx Activities

Biochemical MeasurementNonpregnantNormal PregnantPreeclampsia
Data are shown as mean±SD or median [IQR] as appropriate.
*P<0.005 between nonpregnant and both pregnancy groups;
P<0.02,
P<0.005,
§P<0.0001 between normal and preeclamptic pregnancies.
Maternal TBARS, μmol/L (median [IQR])0.40 [0.2, 0.7]0.45 [0.2, 0.8]1.2 [0.6, 1.6]§
Umbilical venous TBARS, μmol/L (median [IQR])0.6 [0.2, 0.8]0.8 [0.5, 1.0]
Maternal selenium, μg/L (mean±SD)69.8±11.7*58.4±14.939.7±13.8§
Umbilical venous selenium, μg/L (mean±SD)42.1±11.829.0±9.9
Maternal plasma GPx activity, nmol/min per mL (median [IQR])0.82 [0.7, 0.9]*0.53 [0.4, 0.6]0.32 [0.1, 0.4]§
Umbilical venous GPx activity, nmol/min per mL (median [IQR])0.51 [0.4, 0.6]0.39 [0.2, 0.5]