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논문 기본 정보

자료유형
학술저널
저자정보
Seo, Hee-Won (Division of Biological Science and Technology, and Institute of Biomaterials, Yonsei University) Kim, Min-Goo (Division of Biological Science and Technology, and Institute of Biomaterials, Yonsei University) Choi, Yo-Han (Division of Biological Science and Technology, and Institute of Biomaterials, Yonsei University) Ka, Hak-Hyun (Division of Biological Science and Technology, and Institute of Biomaterials, Yonsei University)
저널정보
한국동물번식학회 한국동물번식학회지 한국동물번식학회지 제33권 제3호
발행연도
2009.1
수록면
147 - 152 (6page)

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Lysophosphatidic acid (LPA), a simple phospholipid-derived mediator implicated in diverse biological actions, acts through the specific G-protein coupled receptors, LPA receptor (LPAR) $1{\sim}5$. Our previous study showed that LPAR3 is expressed in the uterine endometrium in a cell type- and stage-specific manner and LPA via LPAR3 increases PTGS2 expression in the uterine endometrium during the period of implantation. Although LPAR3 is considered to be predominant LPA receptor in the uterine endometrium, other LPA receptors might playa role to mediate LPA functions in the uterine endometrium during pregnancy. Among LPARs, we investigated expression of LPAR1 during the estrous cycle and pregnancy in this study. Uterine endometrial tissue samples were collected from day (D) 12 and D15 of the estrous cycle and from D12, D15, D30, D60, D90 and D114 of pregnancy. Northern blot analysis determined that LPAR1 mRNA was constitutively expressed in the uterine endometrial tissues during the estrous cycle and pregnancy of all stages. Analysis by immunoblotting revealed that LPAR1 proteins were present in the porcine uterine endometrium during the estrous cycle and pregnancy. Immunohistochemical experiments demonstrated that LP AR1 protein was localized to endometrial epithelium and stromal cell, specifically to nuclei of these cell types. Results in this study show that LPAR1 is constitutively expressed in the uterine endometrium during the estrous cycle and pregnancy. These results suggest that LPA via LPAR1 may playa role in the uterine endometrial function throughout pregnancy in pigs.

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