Women with Preeclampsia Have Increased Serum Levels of Pregnancy‐Associated Plasma Protein A (PAPP‐A), Inhibin A, Activin A and Soluble E‐selectin

Objective. Poor placentation in early pregnancy is thought to lead to an excessive maternal systemic inflammatory response, which causes the maternal syndrome of preeclampsia. The aims of this retrospective study were to confirm old reports of increased blood levels of pregnancy‐associated plasma protein A (PAPP‐A) in preeclampsia and how its levels correlate with the levels of other placental and endothelial proteins that are reported to be elevated in preeclampsia. Methods. Nineteen women with preeclampsia symptoms were matched with 19 normal pregnant controls for gestational age, maternal age, and parity. PAPP‐A, placental pregnancy‐specific β1‐glycoprotein (SP1), inhibin A, activin A, and sE‐selectin were measured in serum using specific ELISAs. Results. Maternal serum levels of PAPP‐A, inhibin A, activin A and sE‐selectin were increased in women with preeclampsia (mean 157.7 vs. 76.85 mIU/mL, p=0.005; 3.08 vs. 1.51 ng/mL, p=0.002, 32.36 vs. 3.77 ng/mL, p<0.001 and 62.15 vs. 46.37 ng/mL, p=0.02 respec...