Serotonin-induced vasoconstriction in human placental chorionic veins: interaction with prostaglandin F2 alpha.

Abstract:

:In vitro experiments using isolated rings and perfused segments of human chorionic veins, were designed to determine the effects of serotonin and their interaction with PGF2 alpha on vascular tension and perfusion pressure. These vessels responded vigorously with high sensitivity to the vasoconstrictor effects of serotonin in both experimental designs. Administration of PGF2 alpha also led to constriction of the veins, but this autacoid is at least 100 times less potent than serotonin. When adding PGF2 alpha previously to serotonin to the bathing fluid or to the perfusate, the serotonin response was significantly potentiated, increasing the maximal contractile response in 116 +/- 12% and the perfusion pressure in 180 +/- 25%. Both autacoids probably operate in this vascular bed interacting with each other and playing an important role in the regulation of placental blood flow in vivo.

journal_name

Gynecol Obstet Invest

authors

González C,Cruz MA,Gallardo V,Albornoz J,Bravo I

doi

10.1159/000292671

subject

Has Abstract

pub_date

1993-01-01 00:00:00

pages

86-90

issue

2

eissn

0378-7346

issn

1423-002X

journal_volume

35

pub_type

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