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Journal of Clinical Endocrinology & Metabolism, Vol 74, 910-913, Copyright © 1992 by Endocrine Society

ARTICLES

Mineralocorticoids and mineralocorticoid receptors in mononuclear leukocytes in patients with pregnancy-induced hypertension

J Wacker, N E-Mistry, H Bauer, P Vecsei, W Stolz and G Bastert
Department of Gynecology and Obstetrics, University of Heidelberg, Germany.

To examine the role of mineralocorticoids in the pathophysiology of pregnancy-induced hypertension (PIH), we studied plasma aldosterone and 18-hydroxycorticosterone levels in 25 women with PIH and 25 normal pregnant women, as controls. Furthermore, we evaluated the mineralocorticoid receptor (MR) status in mononuclear leukocytes in the 2 groups. MR count was significantly (P less than 0.0005) decreased in the PIH group (148 +/- 9 binding sites/cell) compared with the control group (300 +/- 17 binding sites/cell; mean +/- SEM). Plasma aldosterone in women with PIH was 281 +/- 61 pmol/L; in normal pregnant women it was 697 +/- 172 pmol/L (P less than 0.025). Plasma 18- hydroxycorticosterone was also significantly (P less than 0.025) lower (PIH, 1071 +/- 149 pmol/L; controls, 1907 +/- 318 pmol/L). These values were determined at the onset of clinical symptoms of PIH. These results cannot be explained by receptor down-regulation due to higher levels of mineralocorticoids in PIH; a hitherto unknown mineralocorticoid may, thus, be responsible for the hypertension and altered MR status.


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Copyright © 1992 by The Endocrine Society