title: Different expression of PGE synthase, PGF receptor, TNF, Fas and oxytocin in the bovine corpus luteum of the estrous cycle and pregnancy.
abstract: Functional differences between the corpus luteum (CL) of pregnancy and CL of the cycle in cows were examined. Messenger RNA and protein levels of prostaglandin (PG) E synthase (PGES), PGF2α receptor (PGFR), tumor necrosis factor-α (TNF) and Fas were found to be higher in the CL of pregnancy than in CL of the cycle. Oxytocin (OT) mRNA and protein levels were lower in the CL of pregnancy. Messenger RNA levels of progesterone receptor (PR), luteinizing hormone receptor (LHR), PGE2 receptor (PGER), PGF synthase (PGFS), TNF receptor type I (TNFRI) and TNF receptor type II (TNFRII) did not differ between the cycle and pregnancy. PGE2 and PGF2α production by cultured bovine endometrial tissues was decreased by a supernatant derived from the homogenized CL of pregnancy but not by that of the CL of the cycle, suggesting that specific substances in the CL of pregnancy affect endometrial PG production in cows. Collectively, PGES, PGFR, TNF, Fas or OT may contribute to differences between the CL of pregnancy and CL of the estrous cycle in cows.
authors.affiliation: Animal Physiology Research Unit, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan. Electronic address: sakumoto@affrc.go.jp.
authors.forename: R
authors.initials: R
authors.lastname: Sakumoto
authors.affiliation: Animal Physiology Research Unit, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan.
authors.forename: K-G
authors.initials: KG
authors.lastname: Hayashi
authors.affiliation: Animal Physiology Research Unit, National Institute of Agrobiological Sciences, Ibaraki 305-0901, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Takahashi
mesh_terms: D000818:Animals; D002417:Cattle; D003338:Corpus Luteum / Q000378:metabolism*; D030762:Estrous Cycle / Q000378:metabolism*; D005260:Female; D019746:Intramolecular Oxidoreductases / Q000235:genetics / Q000378:metabolism*; D010121:Oxytocin / Q000235:genetics / Q000378:metabolism*; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000378:metabolism*; D000071876:Prostaglandin-E Synthases; D011982:Receptors, Prostaglandin / Q000235:genetics / Q000378:metabolism*; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics / Q000378:metabolism*; D019014:fas Receptor / Q000235:genetics / Q000378:metabolism*
chemical_list: D011982:Receptors, Prostaglandin; D014409:Tumor Necrosis Factor-alpha; D019014:fas Receptor; C034671:prostaglandin F2alpha receptor; D010121:Oxytocin; D019746:Intramolecular Oxidoreductases; D000071876:Prostaglandin-E Synthases
keywords: Corpus luteum; Cow; Oxytocin; Pregnancy; Prostaglandins