Abstract:
:Sertoli cells play a critical role in spermatogenesis, and in adults, they are terminally differentiated with loss of proliferative activity. This study revealed Sertoli cell proliferation in 17-week-old Sprague-Dawley rats whose dams had been intragastrically administered 250 ng of 3,3',4,4',5-pentachlorobiphenyl/kg on days 13-19 postconception. Immunohistochemical evidence of proliferating cell nuclear antigen (PCNA) expression and electron microscope observation of mitotic figures confirmed the proliferation. Because the serum follicle stimulating hormone (FSH), luteinizing hormone (LH) and testosterone concentrations were similar to those of vehicle-treated rats, a direct endocrine cause for the observed effects was unlikely.
journal_name
Arch Toxicoljournal_title
Archives of toxicologyauthors
Wakui S,Muto T,Suzuki Y,Takahashi H,Hano Hdoi
10.1007/s00204-011-0736-8subject
Has Abstractpub_date
2012-01-01 00:00:00pages
159-62issue
1eissn
0340-5761issn
1432-0738journal_volume
86pub_type
杂志文章abstract::Rats were exposed to nickel sulfate (NiSO4) either by intratracheal (IT) instillation or by acute aerosol inhalation, and pulmonary clearance of Ni and pulmonary inflammatory responses were studied. The half-time of Ni in the lung (initial lung burden = 50 micrograms Ni/rat) was about 32 h in both the IT instillation ...
journal_title:Archives of toxicology
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abstract::This article is published with the incorrect copyright holder name in the HTML article as "© Springer 2018". The correct copyright line should read "The Author(s) 2018" (as it appears in the article PDF). ...
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abstract::The increasing number of man-made chemicals in the environment that may pose a carcinogenic risk emphasizes the need to develop reliable time- and cost-effective approaches for carcinogen detection. To address this issue, we have investigated the utility of human hepatocytes for the in vitro identification of genotoxi...
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abstract::Between 0.25-25 micrograms of an aqueous solution of either mercuric chloride or methyl mercuric acetate was injected directly into the sciatic nerve of 28 adult Wistar rats. The resultant pathological changes in the nerve were examined by teasing individual fibres and by light and electron microscopy. In most respect...
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abstract::The tissue distribution, metabolism and excretion of 14C-2,2',4,4',5-pentachlorodiphenyl ether (PCDE) were studied in the rat. Radioactivity was distributed in all tissues examined, with the highest concentrations being found in the fat followed by the skin, liver, kidney and muscle. Most of the radioactivity found in...
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journal_title:Archives of toxicology
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journal_title:Archives of toxicology
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journal_title:Archives of toxicology
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