Document Detail


The actions of prostaglandins and their interactions with angiotensin II in the isolated perfused human placental cotyledon.
MedLine Citation:
PMID:  3518789     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The prostaglandins PGE1, PGE2, PGD2, PGF2 alpha, U46619 and 6 beta-PGI1 were administered as bolus injections both separately and in combination with angiotensin II into the fetal circulation of isolated human placental cotyledons perfused in vitro. PGF2 alpha and PGD2 caused small dose-dependent increases in fetal perfusion pressure when compared with U46619 which acted as an extremely potent vasoconstrictor of the fetal-placental vasculature. PGE1 caused very small dose-dependent decreases in fetal perfusion pressure when injected on its own. In combination with angiotensin II, PGE1, PGD2 and 6 beta-PGI1 caused significant, dose-related attenuations of the angiotensin II vasoconstrictive response whereas PGE2, PGF2 alpha and U46619 potentiated the response. Injections of angiotensin II after the infusion of indomethacin into the fetal circulation resulted in a potentiation of angiotensin II induced vasoconstriction. The results indicate that prostaglandins exert their effects on the fetal-placental circulation by modulating the actions of angiotensin II.
Authors:
D G Glance; M G Elder; L Myatt
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Publication Detail:
Type:  In Vitro; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  British journal of obstetrics and gynaecology     Volume:  93     ISSN:  0306-5456     ISO Abbreviation:  Br J Obstet Gynaecol     Publication Date:  1986 May 
Date Detail:
Created Date:  1986-07-15     Completed Date:  1986-07-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7503752     Medline TA:  Br J Obstet Gynaecol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  488-94     Citation Subset:  AIM; IM    
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MeSH Terms
Descriptor/Qualifier:
15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid
Alprostadil / pharmacology
Angiotensin II / pharmacology*
Dinoprostone
Drug Interactions
Epoprostenol / pharmacology
Female
Humans
Perfusion
Placenta / blood supply,  drug effects*
Pregnancy
Prostaglandin D2
Prostaglandin Endoperoxides, Synthetic / pharmacology
Prostaglandins / pharmacology*
Prostaglandins D / pharmacology
Prostaglandins E / pharmacology
Prostaglandins, Synthetic / pharmacology
Vasoconstriction
Chemical
Reg. No./Substance:
0/Prostaglandin Endoperoxides, Synthetic; 0/Prostaglandins; 0/Prostaglandins D; 0/Prostaglandins E; 0/Prostaglandins, Synthetic; 11128-99-7/Angiotensin II; 35121-78-9/Epoprostenol; 363-24-6/Dinoprostone; 41598-07-6/Prostaglandin D2; 62770-50-7/5,6-dihydroprostacyclin; 745-65-3/Alprostadil; 76898-47-0/15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid

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


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