Concentrations of uterine luminal prostaglandins in mares with acute and persistent endometritis

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Abstract
Summary: Intrauterine infusion of 1 per cent oyster glycogen solution was used to induce acute endometritis in four genitally normal mares. Numbers of viable neutrophils recovered in uterine washings had increased by 1 h after infusion and remained elevated for at least 72 h. There was a significant correlation between numbers of viable neutrophils and total protein concentrations and between prostaglandin (PG)F and PGE 2 concentrations in washings. There was also a significant relationship between concentrations of 15‐keto‐13, 14‐dihydro PGF 2α in plasma and PGF in washings. Intrauterine concentrations of PGF were influenced by cycle stage and in turn the induced acute endometritis interfered with normal ovarian function. Mares with persistent endometritis had significantly higher concentrations of PGF and total protein and percentage of neutrophils and monuclear cells in washings than normal mares. White blood cells from mares were capable of producing PGF and PGE 2 in vitro .

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