Diesel Exhaust Particle Toxicity on Spermatogenesis in the Mouse is Aryl Hydrocarbon Receptor Dependent
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概要
- 論文の詳細を見る
Diesel exhaust particles (DEPs) are particulate matter from diesel exhaust containing many toxic compounds, such as polyaromatic hydrocarbons (PAHs). Some toxicities of PAH are considered to express via aryl hydrocarbon receptor (AhR). We hypothesized that the male reproductive toxicity of DEPs may depend on PAHs. BALB/c male mice received 24.7, 74.0 or 220 μg/mouse DEP suspension or vehicle injected into the dorsal subcutaneous layer 10 times during 5 weeks. The mice were euthanized, and blood and organs were collected 2 weeks after the last treatment. The epididymis weights, relative epididymis weights per body weight and daily sperm productions and viabilities of the 74.0 and 220 μg/mouse DEP-treated groups decreased significantly compared with those of the vehicle group. The total incidence of sperm abnormalities in the 74.0 and 220 μg/mouse DEP-treated groups increased significantly compared with the vehicle group. The seminiferous epithelium area ratios of the 74.0 and 220 μg/mouse DEP-treated groups were significantly higher compared with the vehicle and 24.6 μg/mouse DEP-treated groups. The ratios of seminiferous tubules with elongated-type spermatids in the 74.0 and 220 μg/mouse DEP-treated groups were significantly decreased compared with the vehicle group. The testosterone level and hepatic resorufin-O-deethylase (EROD) activity as an indirect index of AhR activity in the 74.0 μg/mouse DEP-treated group were significantly increased compared with those of the vehicle group. These results clearly demonstrated that DEPs suppress testicular function, especially spermatogenesis and sperm motility. These effects may be AhR dependent.
- 日本繁殖生物学会の論文
- 2007-10-01
著者
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Taya Kazuyoshi
日本中央競馬会競走馬総合研究所
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Taya K
Laboratory Of Veterinary Physiology Department Of Veterinary Medicine Faculty Of Agriculture Tokyo U
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WATANABE Gen
Department of Basic Veterinary Sciences, The United Graduate School of Veterinary Sciences, Gifu Uni
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TAYA Kazuyoshi
Department of Basic Veterinary Sciences, The United Graduate School of Veterinary Sciences, Gifu Uni
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Taya K
Laboratory Of Veterinary Physiology Department Of Veterinary Medicine Tokyo University Of Agricultur
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Sagai Masaru
Dep. Of Life Sciences Graduate School Of Health Sciences Aomori Univ. Of Health And Welfare
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Sagai Masaru
Division Of Nursing And Human Sciences Faculty Of Health Sciences Aomori University Of Health And We
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Watanabe Gen
中華人民共和国
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IZAWA Hiromi
Division of Human Sciences, Faculty of Health Sciences, Aomori University of Health and Welfare
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KOHARA Machiko
Department of Life Sciences, Graduate School of Health Sciences, Aomori University of Health and Wel
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Kohara Machiko
Department Of Life Sciences Graduate School Of Health Sciences Aomori University Of Health And Welfa
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Sagai Masaru
Division Of Human Sciences Faculty Of Health Sciences Aomori University Of Health And Welfare
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Izawa Hiromi
Division Of Human Sciences Faculty Of Health Sciences Aomori University Of Health And Welfare
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Watanabe Gen
Department Of Basic Veterinary Science United Graduate School Of Veterinary Sciences Gifu University
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Taya Kazuyoshi
Department Of Basic Veterinary Science United Graduate School Of Veterinary Sciences Gifu University
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