Relationship Between Contractions of the Uterus and Concentration of PGF2[alpha] in Uterine Venous Blood after Luteolysis in Gilts

Contents The origin and physiological significance of high pulses of prostaglandin F2α (PGF2α) in uterine venous blood that occur 2-3days after luteolysis are not well understood. We studied the relationship between contractions of the uterus evoked by exogenous oxytocin (OT) and PGF2α concentration...

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Published in:Reproduction in domestic animals 2012-02, Vol.47 (1), p.98
Main Authors: Stefaczyk-Krzymowska, S, Wsowska, B, Gilun, P, Muszak, J, Grzegorzewski, W
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Language:English
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Anatomy & physiology
Blood
Hogs
Veins & arteries
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Wsowska, B
Gilun, P
Muszak, J
Grzegorzewski, W
description Contents The origin and physiological significance of high pulses of prostaglandin F2α (PGF2α) in uterine venous blood that occur 2-3days after luteolysis are not well understood. We studied the relationship between contractions of the uterus evoked by exogenous oxytocin (OT) and PGF2α concentration in uterine venous blood on day 17 of the porcine oestrous cycle. The infusion of OT into the uterine artery produced an immediate increase in the uterine intraluminal pressure (UIP) (p
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We studied the relationship between contractions of the uterus evoked by exogenous oxytocin (OT) and PGF2α concentration in uterine venous blood on day 17 of the porcine oestrous cycle. The infusion of OT into the uterine artery produced an immediate increase in the uterine intraluminal pressure (UIP) (p&lt;0.001) and a simultaneous elevation in PGF2α concentration in uterine venous blood (p&lt;0.0001). The infusion of indomethacin (IND) into the uterine artery slightly decreased PGF2α concentration in uterine venous blood, but it did not suppress uterine contraction or the rapid increase in PGF2α concentration in uterine venous blood just after OT infusion (p&lt;0.0001), which was lower that in gilts not treated with IND. We conclude that the spikes of PGF2α concentration in uterine venous blood occurring after OT infusion on day 17 of the porcine oestrous cycle are mainly caused by the excretion with venous blood from the remodelled uterus and that PGF2α synthesis may contribute to this. 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Blood
Hogs
Veins & arteries
title Relationship Between Contractions of the Uterus and Concentration of PGF2[alpha] in Uterine Venous Blood after Luteolysis in Gilts
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