Disclosed herein are methods for treating a pregnancy related hypertensive disorder, such as pre-eclampsia and eclampsia, using combinations of compounds that alter soluble endoglin, endothelial nitric oxide synthase, PGI2, TGF-β1, TGF-β3, activin A, BMP2, BMP7, and sFlt-1 expression levels or biological activity. Also disclosed are methods of diagnosing a pregnancy related hypertensive disorder, such as pre-eclampsia and eclampsia, that include the measurement of any one or more of the following: soluble endoglin, endothelial nitric oxide synthase, PGI2, TGF-β1, TGF-β3, activin A, BMP2, BMP7, and sFlt-1 expression levels or biological activity.