Evaluation of endocrine disruption action in wildlife, using Japanese field mice, Apodemus speciosus as a bio-indicator of Dioxins contamination
Project/Area Number |
18380089
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
林学・森林工学
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Research Institution | Niigata University |
Principal Investigator |
SEKIJIMA Tsuneo Niigata University, 自然科学系, 准教授 (10300964)
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Co-Investigator(Kenkyū-buntansha) |
OBARA Yoshitaka 弘前大学, 農学生命科学部, 教授 (90003673)
HOSHI Nobuhiko 神戸大学, 農学研究科, 教授 (10209223)
SOGAWA Kazuhiro 東北大学, 生命科学研究科, 教授 (80175421)
TAKAHASHI Yukio 新潟大学, 自然科学系, 教授 (70134955)
酒井 美月 農業環境技術研究所, 有機化学物質研究領域, 特別研究員 (50418688)
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Co-Investigator(Renkei-kenkyūsha) |
SAKAI Mizuki (独)農業環境技術研究所, 有機化学物質研究領域, 特別研究員 (50418688)
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Project Period (FY) |
2006 – 2008
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Project Status |
Completed (Fiscal Year 2008)
|
Budget Amount *help |
¥15,470,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2008: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2007: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2006: ¥10,400,000 (Direct Cost: ¥10,400,000)
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Keywords | 森林生物 / アカネズミ / ダイオキシン / Aryl hydrocarbon Receptor / 多型 / 個体群 / AhR / 暴露実験 / 染色体異常 / CYP1A1 |
Research Abstract |
アカネズミにおけるダイオキシン汚染の影響は、個体レベルではダイオキシンによる毒性発現が認められ、精子数の減少など繁殖機能の低下が起きていることが明らかとなった.一方、ダイオキシン汚染に有利なダイオキシン受容体のアリルを同定し、その頻度を指標とした個体群レベルでの評価を行ったところ、汚染範囲が小規模で周辺からの個体の移出入が頻繁に行われることにより、有利なアリルが集団に固定できないことが明らかになった.
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Report
(4 results)
Research Products
(18 results)
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[Journal Article] Fetal and neonatal exposure to three typical environmental chemicals with different mechanisms of action : Mixed exposure to phenol, phthalate, and dioxin cancels the effects of sole exposure on mouse midbrain dopaminergic nuclei2009
Author(s)
Tanida, T., Warita, K. Ishihara, K., Fukui S, Mitsuhashi, T., Sugawara, T., Tabuchi, Y., Nanmori, T., Qi, W.-M., Inamoto, T., Yokoyama, T., Kitagawa, H. and Hoshi, N.
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Journal Title
Toxicology Letters in press
Related Report
Peer Reviewed
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[Journal Article] Genotoxic assessment of small mammals at an illegal dumpsite at the Aomori-Iwate prefectural boundary2008
Author(s)
Obara, Y., Kyoya, T., Yamamoto, D., Ito, S., Hagiwara, S. and Tamura, K.
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Journal Title
Zool. Sci 25
Pages: 139-144
NAID
Related Report
Peer Reviewed
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[Journal Article] Activin A and eCG recover reproductive dysfunction induced by neonatal exposure to estrogenic endocrine disruptor in adult male mice2008
Author(s)
Warita, K., Okamoto, K., Mutoh, K., Hasegawa, Y., Yue, Z-P., Qi, W-M., Kitagawa, H., Sugawara, T. and Hoshi, N.
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Journal Title
Biology of Reproduction 78
Pages: 59-67
Related Report
Peer Reviewed
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[Journal Article] Does paternal exposure to 2, 3, 7, 8-tetrachlorodi benzo-p-dioxin (TCDD) affect the sex ratio of offspring?2007
Author(s)
Ishihara, K., Warita, K., Tanida, T., Sugawara, T., Kitagawa, H. and Hoshi, N.
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Journal Title
Journal of Veterinary Medical Science 69
Pages: 347-3520
NAID
Related Report
Peer Reviewed
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[Journal Article] Progression of the dose-related effects of estrogenic endocrine disruptors, an important factor in declining fertility, differs between the hypothalamo-pituitary axis and reproductive organs of male mice2006
Author(s)
Warita, K., Sugawara, T., Yue, Z-P., Tsukahara, S., Mutoh, K., Hasegawa, Y., Kitagawa, H., Mori, C. and Hoshi, N.
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Journal Title
Journal of Veterinary Medical Science 68
Pages: 1257-1267
NAID
Related Report
Peer Reviewed
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[Presentation] 雄親へのTCDD曝露による次世代性比変動時期の特定2008
Author(s)
石原可奈, 割田克彦, 谷田任司, 三觜友子, 青木香保里, 横山えりか, 田阪健, 横山俊史, 北川浩, 大迫誠一郎, 遠山千春, 星信彦
Organizer
第27回日本アンドロロジー学会
Place of Presentation
京都
Year and Date
2008-07-04
Related Report
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[Presentation] TCDD雄親直接曝露による次世代性比変動メカニズムの解明2008
Author(s)
石原可奈, 割田克彦, 谷田任司, 三觜友子, 青木香保里, 横山えりか, 田阪健, 横山俊史, 北川浩, 大迫誠一郎, 遠山千春, 星信彦
Organizer
第48回日本先天異常学会学術集会
Place of Presentation
東京
Year and Date
2008-06-28
Related Report
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[Presentation] 外因性エストロゲン様化学物質がLeydig細胞株TTE1のStAR およびP450scc遺伝子発現に与える影響とアセチル化ヒストンの変化2008
Author(s)
割田克彦, 菅原照夫, 田渕圭章, 三觜友子, 松本由樹, 三木崇範, 石原可奈, 谷田任司, 横山俊史, 竹内義喜, 北川浩, 星信彦
Organizer
第145回日本獣医学会学術集会
Place of Presentation
神奈川
Year and Date
2008-03-28
Related Report
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[Book] Molecular cytogenetic aspects of sex differentiation anomalies in the field of obstetrics and gynecology, In : Singh, J.R. and Gandhi, G. (Eds.)2009
Author(s)
Hoshi, N., Handa, Y., Nishi, S., Yamada, H., Kishida, T., Sagawa, T., Warita, K., Sakuragi, N. and Fujimoto, S.
Publisher
Perspectives in Human Genetics(in press)
Related Report
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