| Impairment of alveolar type-II cells involved in the toxicity of Aflatoxin G(1) in rat lung. | |
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MedLine Citation:
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PMID: 22709786 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Our previous studies showed intragastric administration of Aflatoxin G(1) (AFG(1)) could induce lung adenocarcinoma, which derived from alveolar type II cells (AT-II cells). AT-II cells contribute to Aflatoxin B(1) (AFB(1)) metabolism and also serve as the potential progenitor cells for AFB(1)-induced tumorigenesis. Thus, AT-II cells may constitute a target for AFG(1) exposure and serve as progenitor cells for tumorigenesis induced by AFG(1). The current experiment was designed to identify the acute toxicity of AFG(1) in AT-II cells following a single intratracheal administration of AFG(1). We observed inflammatory changes in the alveolar septum at days 3 and 7 after AFG(1) treatment, which resolved by 14 days. We also found AFG(1) caused lamellar bodies damage in AT-II cells at days 3 and 7 post-treatment. Surfactant protein C (SP-C) expression, an AT-II cell-specific marker, was reduced at day 7 post-treatment. The structural and functional impairment in AT-II cells returned to normal by day 14. Moreover, we found that AFG(1) induced a elevation of intracellular calcium concentration [Ca(2+)]i in AT-II cells in vitro, which may contribute to the decreased SP-C expression. In conclusion, our results show AFG(1) induces structural and functional impairment in AT-II cells involved in the acute toxicity of AFG(1) in lung. |
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Authors:
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Haitao Shen; Ping Lv; Xin Xing; Lingxiao Xing; Xia Yan; Junling Wang; Xianghong Zhang |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-6-15 |
Journal Detail:
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Title: Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association Volume: - ISSN: 1873-6351 ISO Abbreviation: - Publication Date: 2012 Jun |
Date Detail:
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Created Date: 2012-6-19 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8207483 Medline TA: Food Chem Toxicol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2012. Published by Elsevier Ltd. |
Affiliation:
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Lab of Pathology, Hebei Medical University, Shijiazhuang, China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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