2022 Fiscal Year Final Research Report
The mechanism responsible for long-term infertility in cows with uterine inflammation.
Project/Area Number |
20K15646
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Research Category |
Grant-in-Aid for Early-Career Scientists
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Allocation Type | Multi-year Fund |
Review Section |
Basic Section 42010:Animal production science-related
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Research Institution | The University of Tokyo |
Principal Investigator |
Magata Fumie 東京大学, 大学院農学生命科学研究科(農学部), 助教 (50635208)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | リポポリサッカライド / 炎症性子宮疾患 / 卵胞発育 / エストラジオール / 卵母細胞 / 顆粒層細胞 / 初期胞状卵胞 / 牛 |
Outline of Final Research Achievements |
This study aimed to elucidate the effects of LPS on the developmental dynamics and steroidogenesis of follicles and the developmental competence of oocytes in developing follicles. LPS may directly act on bovine early antral follicles to suppress estradiol production in vitro. LPS also attenuated the viability of oocytes enclosed in the early antral follicles and induced an irreversible decrease in oocyte maturation capacity. Furthermore, a bovine endometritis model was developed to examine the immediate and long-term effects of LPS on the brain and ovarian interaction.
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Free Research Field |
臨床繁殖学
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Academic Significance and Societal Importance of the Research Achievements |
炎症性子宮疾患の罹患牛では,臨床的に子宮の炎症が治癒しても長期にわたり受胎性が低下する。本研究では,LPSが長期にわたるエストラジオール産生抑制と不可逆的な卵母細胞の成熟能低下を引き起こすことで,治癒後も継続する卵巣機能障害の一因となる可能性を示した。本研究成果は新たなアプローチによる革新的な治療法の開発のための基礎的知見となり,乳肉牛の生産性向上に寄与することが期待される。
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