Resibufogenin corrects hypertension in a rat model of human preeclampsia |
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Authors: | Vu Hop Ianosi-Irimie Monica Danchuk Svitlana Rabon Edd Nogawa Toshihiko Kamano Yoshiaki Pettit G Robert Wiese Thomas Puschett Jules B |
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Affiliation: | Department of Medicine, Tulane University School of Medicine, New Orleans, LA 70112, USA. |
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Abstract: | The study of the pathogenesis of preeclampsia has been hampered by a relative dearth of animal models. We developed a rat model of preeclampsia in which the excretion of a circulating inhibitor of Na/K ATPase, marinobufagenin (MBG), is elevated. These animals develop hypertension, proteinuria, and intrauterine growth restriction. The administration of a congener of MBG, resibufogenin (RBG), reduces blood pressure to normal in these animals, as is the case when given to pregnant animals rendered hypertensive by the administration of MBG. Studies of Na/K ATPase inhibition by MBG and RBG reveal that these agents are equally effective as inhibitors of the enzyme. |
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