Document Detail


Angiotensin II sensitivity in nonpregnant formerly preeclamptic women and healthy parous controls.
MedLine Citation:
PMID:  15350256     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: In women prone to develop hypertensive complications, vascular reactivity fails to decrease in early pregnancy. Since hypertensive syndromes of pregnancy seem to be superimposed on a preexisting disorder, we tested the hypothesis that in formerly preeclamptic women, as compared to healthy parous controls, circulatory reactivity to angiotensin II is enhanced in the follicular phase of the menstrual cycle. METHODS: Sixty formerly preeclamptic women were subdivided into a hypertensive (HYPERT, n = 14), a normotensive thrombophilic (THROMB, n = 26), and a normotensive nonthrombophilic (ASYMPT, n = 20) subgroup. In these women and in 11 healthy parous controls we assessed at least 5 months postpartum at day 5 (+/-2) of the menstrual cycle the following variables: body weight, height, plasma volume, reactivity to infused angiotensin II of arterial blood pressure, heart rate, glomerular filtration rate (GFR), effective renal blood flow, and the hormones of the renin-angiotensin-aldosterone (RAAS) axis. RESULTS: At baseline, THROMB did not differ from controls. In contrast, ASYMPT exhibited slight overweight, reduced plasma volume, and reduced renal blood flow. HYPERT much resembled ASYMPT except for the overweight, renal perfusion, and GFR. Infusion of angiotensin II led to comparable decreases in renal perfusion and filtration, and to increases in blood pressure. However, sensitivity to this substance correlated inversely with relative and absolute sizes of the plasma volume compartment. CONCLUSION: Circulatory sensitivity to infused angiotensin II is comparable between nonpregnant formerly preeclamptic women and healthy parous controls. However, responsiveness to this agent is enhanced among women with a contracted plasma volume compartment, a condition commonly observed among formerly preeclamptic women.
Authors:
Marc E A Spaanderman; Timo H A Ekhart; Peter W de Leeuw; Louis L H Peeters
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Publication Detail:
Type:  Clinical Trial; Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of the Society for Gynecologic Investigation     Volume:  11     ISSN:  1071-5576     ISO Abbreviation:  J. Soc. Gynecol. Investig.     Publication Date:  2004 Sep 
Date Detail:
Created Date:  2004-09-07     Completed Date:  2004-12-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9433806     Medline TA:  J Soc Gynecol Investig     Country:  United States    
Other Details:
Languages:  eng     Pagination:  416-22     Citation Subset:  IM    
Affiliation:
Department of Obstetrics & Gynecology, Maastricht, The Netherlands. marc.spaanderman@og.unimaas.nl
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MeSH Terms
Descriptor/Qualifier:
Adult
Angiotensin II / pharmacology*
Blood Pressure
Body Weight
Female
Follicular Phase / physiology*
Heart Rate
Humans
Hypertension, Pregnancy-Induced / physiopathology*,  prevention & control*
Kidney / blood supply
Parity
Pre-Eclampsia / physiopathology*
Pregnancy
Regional Blood Flow
Risk Factors
Vasoconstrictor Agents / pharmacology*
Chemical
Reg. No./Substance:
0/Vasoconstrictor Agents; 11128-99-7/Angiotensin II

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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