Plasma gelsolin and actin free VDBP (AFVDBP) were measured in PE (early onset <33 weeks; late onset 鈮?6 weeks), matched normal pregnant (normP) and non-pregnant (nonPr) women, using commercially available ELISAs. Longitudinal samples from normP and women who subsequently developed PE were also analysed.
Plasma gelsolin fell during pregnancy (p = 0.0002), with a concomitant rise in actin-free VDBP (p < 0.001). Gelsolin concentrations were only significantly lower in established PE (p < 0.05) when compared to non-pregnant controls.
We have shown that the components of the actin clearance system, gelsolin and AFVDBP, are altered in normal pregnancy and further changes occur in established PE, suggesting depleted actin clearance in PE. Whether this is a cause or consequence of PE pathophysiology requires further investigation.