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ATP content and maturational/developmental ability of bovine oocytes with various cytoplasmic morphologies

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タイトル: ATP content and maturational/developmental ability of bovine oocytes with various cytoplasmic morphologies
著者: Nagano, Masashi 著作を一覧する
Katagiri, Seiji 著作を一覧する
Takahashi, Yoshiyuki 著作を一覧する
キーワード: ATP
Developmental ability
Maturation
Mitochondria
Oocyte morphology
発行日: 2006年11月
出版者: Cambridge University Press
誌名: Zygote
巻: 14
号: 4
開始ページ: 299
終了ページ: 304
出版社 DOI: 10.1017/S0967199406003807
抄録: We examined the relationship among morphological appearance (six groups) of bovine oocytes, ATP content and maturational/developmental ability. Oocytes with a brown ooplasm (with or without a dark region) had intermediate levels of ATP at the germinal vesicle (GV) stage and showed higher rates of first polar body (PB) extrusion than the other groups. Oocytes with a low level of ATP (oocytes with a pale ooplasm without dark clusters) and oocytes with a high level of ATP (oocytes with a black ooplasm) showed lower rates of PB extrusion. During in vitro maturation, ATP levels in oocytes decreased at around GV breakdown and increased toward metaphase II (MII). MII oocytes having a brown ooplasm with a dark region, which had good developmental capacity, had a relatively high level of ATP. MII oocytes with a brown or pale ooplasm without dark clusters, which had poor developmental capacity, had low ATP levels. MII oocytes with a black ooplasm, which had poor developmental capacity, had an unusually high level of ATP. These results suggest that the morphological appearance of bovine oocytes is closely related to their ATP levels and that cytoplasmic morphology will give an advantage for the selection of oocytes with a high maturational and developmental ability.
Rights: Copyright © 2006 Cambridge University Press
資料タイプ: article
URI: http://hdl.handle.net/2115/17148
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 高橋 芳幸

 

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