کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1905243 | 1534701 | 2010 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Marinobufagenin, resibufogenin and preeclampsia Marinobufagenin, resibufogenin and preeclampsia](/preview/png/1905243.png)
The bufodienolides are cardiac glycosides which have the ability to inhibit the enzyme, Na+/K+ ATPase (sodium potassium adenosine triphosphatase). They are cardiac inotropes, cause vasoconstriction (and, potentially, hypertension) and are natriuretic. Evidence has accrued over time which supports the view that they are mechanistically involved in volume expansion-mediated hypertension. In this communication, the authors summarize data which support the view that the bufodienolides and, in particular, marinobufagenin (MBG) are involved in the pathogenesis of preeclampsia. In a rat model of the syndrome, MBG causes hypertension, proteinuria, intrauterine growth restriction and increased weight gain. All of these phenotypic characteristics are prevented by an antagonist to MBG, resibufogenin (RBG). The “preeclamptic” animals also develop a vascular leak syndrome, resulting in hemoconcentration. Abnormalities in the MAPK (mitogen-activated protein kinase) system play a role in the mechanism by which MBG produces the abnormalities in the pregnant rat. Studies to discover the relevance of these findings to human preeclampsia are currently underway in several laboratories and clinics.
Journal: Biochimica et Biophysica Acta (BBA) - Molecular Basis of Disease - Volume 1802, Issue 12, December 2010, Pages 1246–1253