ウシ卵胞発育中の顆粒層細胞におけるアンジオポエチン-Tie系のmRNA発現
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概要
- 論文の詳細を見る
Recent findings indicate that the changing profile of angiopoietins (ANPT) and their receptor Tie2 are closely associated with development and regression of the vascular network in the cyclic ovary. We previously reported that mRNA expression for the ANPT-Tie system in theca interna changes during bovine follicular development and atresia, and both ANPTs affect steroidogenesis in the preovulatory follicle. The aim of this study was to investigate mRNA expression for ANPT1, ANPT-2 and Tie2 in granulosa cells (GC) during follicular development in the cow. Bovine follicles were classified according to the estradiol-17β (E2) concentration in follicular fluid (FF) as follows: (1) E2<0.5, (2) 0.5<E2<5, (3) 5<E2<20, (4) 20<E2<180 and (5) E2>180 ng/ml FF. Semi-quantitative RT-PCR analysis revealed that the expression of ANPT-1 mRNA was not detected in most of the follicle with E2<5 ng/ml (diameter of 5-10 mm), but clearly detected in all follicles with E2>5 ng/ml (diameter of >10 mm). The mRNA expression for ANPT-2 was drastically decreased in the follicles with E2>5 ng/ml. Tie2 mRNA expression remained unchanged at the different stages of follicular development. The present data show that ANPT-1 becomes predominant in the follicle producing high levels of E2, indicating the possible switch-over from ANPT-2 (antagonist) to ANPT-1 (agonist). Thus, the result suggests that the ANPT-Tie system in bovine GC may stimulate E2 secretion rather than angiogenesis in the late stages of follicular development.
- 日本繁殖生物学会の論文
- 2004-08-01
著者
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MATSUI Motozumi
Department of Clinically Veterinary Sciences, Obihiro University of Agriculture and Veterinary Medic
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宮本 明夫
帯広畜産大
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Schams D
Technical Univ. Munich Freising‐weihenstphan Deu
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Berisha B
Technical Univ. Munich Freising‐weihenstphan Deu
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MIYAMOTO Akio
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medici
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BERISHA Bajram
Institute of Physiology, Technical University of Munich
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SCHAMS Dieter
Institute of Physiology, Technical University of Munich
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Matsui Motozumi
Lab. Of Theriogenology Dep. Of Applied Veterinary Medicine Obihiro Univ. Of Agriculture And Veterina
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Schams Dieter
帯広畜産大学 畜産科学科・生殖科学研究室
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Amaya Montoya
帯広畜産大学 畜産学研究科畜産衛生学
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Matsui Motozumi
Department Of Clinically Veterinary Sciences Obihiro University Of Agriculture And Veterinary Medici
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Hayashi Ken-Go
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medici
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Hirabayashi Keiji
Department Of Animal Production Ikuta Campus Meiji University
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松井 基純
The United Graduate School Of Veterinary Sciences Gifu University
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Schams Dieter
Institut Fur Physiologie Forschungszentrum Fur Milch Und Lebensmittel Weihenstephan Technische Unive
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Miyamoto A
Laboratory Of Animal Genetics And Reproduction Obihiro University Of Agriculture And Veterinary Medi
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Hayashi Ken‐go
Graduate School Of Animal And Food Hygiene Obihiro University Of Agriculture And Veterinary Medicine
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Miyamoto Akio
Department Of Agricultural And Life Science Obihiro University Of Agriculture And Veterinary Medicin
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Miyamoto Akio
Graduate School Of Animal And Food Hygiene Obihiro Univ. Of Agriculture And Veterinary Medicine
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Miyamoto Akio
Laboratory Of Animal Genetics And Reproduction Obihiro University Of Agriculture And Veterinary Medi
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Matsui Motozumi
Department Of Clinical Veterinary Science Obihiro University Of Agriculture And Veterinary Medicine
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SCHAMS Dieter
Institut für Physiologie, Süddeutsche Versuchs- und Forschungsanstalt für Milchwirtschaft, Technische Universität München
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MIYAMOTO Akio
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine
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HAYASHI Ken-Go
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine
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林 憲悟
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine
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松井 基純
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine
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MATSUI Motozumi
Department of Agricultural and Life Science, Obihiro University of Agriculture and Veterinary Medicine
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BERISHA Bajram
Institute of Physiology Weihenstephan, Technical University of Munich
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