Abstract
Circulating markers for endothelial activation such as endothelin-1 (ET-1), ICAM-1 and VCAM-1 are elevated in women with preeclampsia. Using human umbilical vein endothelial cells (HUVECs) as an in vitro model of the maternal vasculature, we show that activin A and preeclamptic serum upregulate ET-1, ICAM-1, and VCAM-1 in HUVECs. Further, we show that follistatin, a specific binding protein for activin, mitigates the upregulation of ET-1, ICAM-1 and VCAM-1 in HUVECs exposed to either activin A or preeclamptic serum. These data are consistent with activin A contributing to the pathophysiology of preeclampsia and suggest that therapies targeting activin signalling are worth exploring.
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