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タイトル: Differences in progesterone concentrations and mRNA expressions of progesterone receptors in bovine endometrial tissue between the uterine horns ipsilateral and contralateral to the corpus luteum
著者: TAKAHASHI, Hiroto
HANEDA, Shingo
KAYANO, Mitsunori
MATSUI, Motozumi
羽田, 真悟
茅野, 光範
松井, 基純
キーワード: bovine
progesterone
receptor
uterus
発行日: 2016
出版者: 日本獣医学会
抄録: Because the establishment of pregnancy begins at the uterine horn ipsilateral to the corpus luteum (ipsi-horn) in cattle, levels of progesterone (P4) and receptor expression in the endometrial tissue, which regulate the intrauterine environment for embryo development, may differ between the ipsi-horn and the uterine horn contralateral to corpus luteum (contra-horn). The aim of the present study was to determine the endometrial tissue P4 concentrations and nuclear progesterone receptor (PGR), progesterone receptor membrane component 1 (PGRMC1) and PGRMC2 mRNA expressions in the cranial and middle parts of the uterine horns during the luteal phase. The results showed higher endometrial tissue P4 concentrations in the cranial part of the ipsi-horn than in that of the contra-horn (P<0.01); however, no change in the endometrial tissue P4 concentrations was evident during the luteal phase. The PGR mRNA expression was higher during the early luteal phase (P<0.05), but no differences between the horns were evident. However, PGRMC1 mRNA expression during the early luteal phase was higher in the cranial part of the ipsi-horn than in that of the contra-horn (P<0.05). In the middle part, there were no changes in the endometrial tissue P4 concentrations and P4 receptor expressions during the luteal phase. In conclusion, the differences in dynamics of endometrial tissue P4 concentrations and P4 receptor expressions between the uterine horns ipsilateral and contralateral to the ovary containing a corpus luteum may cause differences in the intrauterine environment for both the ipsi- and contra-horns.
URI: http://ir.obihiro.ac.jp/dspace/handle/10322/4364
ISSN: 1347-7439
0916-7250
出現コレクション:00B01学術雑誌論文

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