Study for establishing a chemical risk evaluation method on brain development utilizing neurogenesis-related parameters
Project/Area Number |
25292170
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Veterinary medical science
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Research Institution | Tokyo University of Agriculture and Technology |
Principal Investigator |
SHIBUTANI MAKOTO 東京農工大学, (連合)農学研究科(研究院), 教授 (20311392)
|
Co-Investigator(Kenkyū-buntansha) |
YOSHIDA Toshinori 東京農工大学, 大学院農学研究院, 准教授 (80726456)
SUZUKI Kazuhiko 東京農工大学, 大学院農学研究院, 准教授 (00366626)
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Project Period (FY) |
2013-04-01 – 2016-03-31
|
Project Status |
Completed (Fiscal Year 2015)
|
Budget Amount *help |
¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000)
Fiscal Year 2015: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2014: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
|
Keywords | 発達神経毒性 / ニューロン新生 / 海馬歯状回 / 毒性評価法 / メチル化変動 |
Outline of Final Research Achievements |
To construct an efficient evaluation system of developmental neurotoxicity applicable for small-scale screening, disruption mechanism and toxicity target of model compounds in the hippocampal neurogenesis were elucidated using rats. The similarity in the effect was confirmed in mice, and one interneuron gene revealing a sustained promoter region hypermethylation was identified with the compound showing irreversible effects by global genomic methylation analysis, while the compound showing reversible effects revealed one interneuron gene hypermethylated transiently. Moreover, hypermethylation of an interneuron gene identified by developmental exposure was lacked after adult-stage exposure. Conversely, a morphogenesis-related gene showing irreversible hypermethylation in mice also revealed irreversible in rats. Thus, incorporation of molecular markers for irreversibility based on genomic hypermethylation was found to be effective for evaluation of developmental neurotoxicity.
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Report
(4 results)
Research Products
(26 results)
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[Journal Article] Maternal exposure to hexachlorophene targets intermediate-stage progenitor cells in the hippocampal neurogenesis involving myelin vacuolation of cholinergic and glutamatergic inputs in mice.2016
Author(s)
Kato, M., Abe, H., Itahashi, M., Kikuchihara, Y., Kimura, M., Mizukami, S., Yoshida, T., Shibutani, M.
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Journal Title
J. Appl. Toxicol.
Volume: 36
Issue: 2
Pages: 211-222
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Maternal exposure to 3,3’-iminodipropionitrile targets late-stage differentiation of hippocampal granule cell lineages to affect brain-derived neurotrophic factor signaling and interneuron subpopulations in rat offspring.2015
Author(s)
Itahashi, M., Abe, H., Tanaka, T., Mizukami, S., Kikuchihara, Y., Yoshida, T., Shibutani, M.
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Journal Title
J. Appl. Toxicol.
Volume: 35
Issue: 8
Pages: 884-894
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Maternal exposure to hexachlorophene targets intermediate-stage progenitor cells in the hippocampal neurogenesis involving myelin vacuolation of cholinergic and glutamatergic inputs in mice.2015
Author(s)
Kato, M., Abe, H., Itahashi, M., Kikuchihara, Y., Kimura, M., Mizukami, S., Yoshida, T., Shibutani. M.
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Journal Title
Journal of Applied Toxicology
Volume: 印刷中
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Relationship between brain accumulation of manganese and aberration of hippocampal adult neurogenesis after oral exposure to manganese chloride in mice.2015
Author(s)
Kikuchihara, Y., Abe, H., Tanaka, T., Kato, M., Wang, L., Ikarashi, Y., Yoshida, T., Shibutani, M.
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Journal Title
Toxicology
Volume: 331
Pages: 24-34
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Developmental hypothyroidism abolishes bilateral differences in sonic hedgehog gene control in the rat hippocampal dentate gyrus.2015
Author(s)
Tanaka, T., Wang, L., Kimura, M., Abe, H., Mizukami, S., Yoshida, T., Shibutani, M.
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Journal Title
Toxicological Sciences
Volume: 144
Issue: 1
Pages: 128-137
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Maternal exposure to hexachlorophene targets intermediate-stage progenitor cells of the hippocampal neurogenesis in rat offspring via dysfunction of cholinergic inputs by myelin vacuolation.2015
Author(s)
Itahashi, M., Abe, H., Tanaka, T., Mizukami, S., Kimura, M., Yoshida, T., Shibutani, M.
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Journal Title
Toxicology
Volume: 328
Pages: 123-134
DOI
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Maternal single injection of N-methyl-N-nitrosourea to cause microcephaly in offspring induces transient aberration of hippocampal neurogenesis in mice.2014
Author(s)
Takimoto, N., Liyun, W., Itahashi, M., Ogawa, T., Segawa, R., Hara, S., Murakami, T., Suzuki, K., Shibutani, M.
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Journal Title
Toxicol. Lett.
Volume: 226
Issue: 1
Pages: 20-27
DOI
Related Report
Peer Reviewed
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