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  • Title: Discriminating analysis of "in vitro" prostaglandin release by myometrial and luminal sides of the ewe endometrium.
    Author: Lacroix MC, Kann G.
    Journal: Prostaglandins; 1983 Jun; 25(6):853-69. PubMed ID: 6578540.
    Abstract:
    An original perifusion device which allows a discrimination between the 30 mn releases of prostaglandins F2 alpha and E2 by the luminal and the myometrial faces of sheep endometrium is described. Tissue was sampled on day 4, 14, 16 or 17 of the cycle and on day 14 or 17 of pregnancy. Total prostaglandin (PG) release measured with this device was in good agreement with PG's concentrations in media of in vitro endometrium incubations already described. Discrimination analysis of the PGs release by each side of the endometrial tissue during the 30 mn perifusion time revealed that PGF2 alpha concentrations of the perifusion medium issued from the lumen compartment were higher than those of the myometrial compartment in all physiological status where corpus luteum is active (including early pregnancy). Therefore in the ewe, it seems that luteal structure maintenance during early pregnancy is not due, as in the gilt, to a shift in PGF2 alpha secretion towards the uterine lumen.
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