Document Detail


Angiotensin II type 1 receptor agonistic antibodies reflect fundamental alterations in the uteroplacental vasculature.
MedLine Citation:
PMID:  16260641     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Abnormal uterine perfusion detected by Doppler sonography reflects impaired trophoblast invasion, a factor involved in the pathogenesis of pregnancy complications such as preeclampsia or intrauterine growth retardation. Recent studies have demonstrated an autoantibody against the angiotensin type 1 (AT1) receptor in pregnant women with preeclampsia. Our aim was to determine whether the AT1 autoantibody precedes the clinical symptoms and is thus predictive of preeclampsia. We therefore detected this antibody in serum from second trimester pregnancies with abnormal uterine perfusion because these women show an indirect sign of inadequate trophoblast invasion. Then the AT1 autoantibody distribution/concentration was compared with that of women at term with or without pregnancy pathology. The AT1 autoantibody was already detectable in second trimester pregnant women with abnormal uterine perfusion before the clinical manifestation of preeclampsia (80%). However, it was also found in second trimester pregnant women with abnormal uterine perfusion who later developed intrauterine growth retardation (60%) or even had a normal course of pregnancy (62%). In the third trimester, the AT1 autoantibody was demonstrated in 89% of patients with manifest preeclampsia, 86% of those with manifest intrauterine growth retardation, and even in healthy pregnant women at term with a history of abnormal uterine perfusion in the second trimester. We conclude that the AT1 autoantibody is an early but nonspecific marker for preeclampsia. The generation of this antibody seems to be associated with distinct types of pregnancy disorders resulting from impaired placental development. The AT1 autoantibody may thus be causative for pathological uteroplacental perfusion.
Authors:
Thomas Walther; Gerd Wallukat; Alexander Jank; Sabine Bartel; Heinz-Peter Schultheiss; Renaldo Faber; Holger Stepan
Publication Detail:
Type:  Journal Article     Date:  2005-10-31
Journal Detail:
Title:  Hypertension     Volume:  46     ISSN:  1524-4563     ISO Abbreviation:  Hypertension     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2005-11-24     Completed Date:  2005-12-21     Revised Date:  2007-07-16    
Medline Journal Info:
Nlm Unique ID:  7906255     Medline TA:  Hypertension     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1275-9     Citation Subset:  IM    
Affiliation:
Department of Cardiology and Pneumology, Charité-Campus Benjamin Franklin, Berlin, Germany. thomas.walther@charite.de
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MeSH Terms
Descriptor/Qualifier:
Adult
Autoantibodies / blood*
Biological Markers / blood
Case-Control Studies
Female
Fetal Growth Retardation / immunology
Humans
Placental Circulation*
Pre-Eclampsia / immunology,  physiopathology*
Pregnancy
Pregnancy Trimester, Second / immunology
Pregnancy Trimester, Third / immunology
Receptor, Angiotensin, Type 1 / agonists*,  immunology*
Regional Blood Flow
Uterus / blood supply*
Chemical
Reg. No./Substance:
0/Autoantibodies; 0/Biological Markers; 0/Receptor, Angiotensin, Type 1

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


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