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  • Title: Uterine vascular response to prostacyclin in nonpregnant sheep.
    Author: Resnik R, Brink GW.
    Journal: Am J Obstet Gynecol; 1980 May 15; 137(2):267-70. PubMed ID: 6990762.
    Abstract:
    Two effects of prostacyclin (PGI2) on uterine blood flow were investigated in nonpregnant, castrated ewes with chronically implanted polyvinyl catheters and electromagnetic flow probes. Intra-arterial infusion of PGI2 resulted immediately in increased uterine blood flow, which returned rapidly to baseline after termination of the infusion. A dose-response curve was constructed and demonstrated that a uterine arterial PGI2 concentration of 1.2 times 10(-6)M (0.5 microgram/ml) produced flows 50% of those achieved by a reference dose of 1 microgram of 17 beta-estradiol. Increases in uterine blood flow were not associated with changes in mean systemic arterial pressure. These findings demonstrate that PGI2 has a vasodilatory effect on the uterine circulation and suggest that this substance has a role in the regulation of uterine blood flow.
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