ID | 40767 |
FullText URL | |
Title Alternative | Studies of iron metabolism of the lung Part 2. An electron microscopic study of ferritin synthesis in alveolar macrophages
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Author |
Fujiwara, Kanta
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Abstract | In order to clarify the role of alveolar macrophages (alv Mφ) in the iron metabolism of the lung, ultrastructural findings of cells obtained by bronchoalveolar lavage were studied by transmission electron microscopy in rats after inhalation of saccharated iron oxide and welding fumes as well as a patient with welder's lung. Alv Mφ of rats which had inhaled saccharated iron oxide formed phagosomes and secondary lysosomes 4 hours after inhalation. The first day after inhalation, many ferritin particles were seen in cytosol and formed a diffuse patterns; 19% of alv Mφ had ferritin particles in a paracrystalin arrangement in the secondary lysosomes. Electron micrographs of alv Mφ at 3, 6, 14, and 28 days after inhalation showed an increase of the cells with ferritin particles. Alv Mφ of rats which had inhaled welding fumes phagocytized those iron particles and also synthesized ferritin particles in the cytosol and secondary lysosomes 6 days after inhalation. Numerous ferritin particles were seen in the cytosol and secondary lysosomes of alv Mφ from a patient with welder's lung as well. These results suggest that inhaled iron was phagocytized by alv Mφ and stored in the cytosol by binding with apoferritin which was synthesized by the ribosomes.
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Keywords | フェリチン
担鉄肺胞マクロファージ
溶接工肺
ラット
透過型電顕
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Published Date | 1989-08-31
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Publication Title |
岡山医学会雑誌
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Publication Title Alternative | Journal of Okayama Medical Association
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Volume | volume101
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Issue | issue7-8
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Publisher | 岡山医学会
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Publisher Alternative | Okayama Medical Association
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Start Page | 733
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End Page | 742
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ISSN | 0030-1558
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NCID | AN00032489
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Content Type |
Journal Article
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Official Url | https://www.jstage.jst.go.jp/article/joma1947/101/7-8/101_7-8_733/_article/-char/ja/
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Related Url | http://www.okayama-u.ac.jp/user/oma/
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language |
Japanese
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Copyright Holders | 岡山医学会
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File Version | publisher
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Refereed |
True
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Eprints Journal Name | joma
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