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A high ratio of G1 to G0 phase cells and an accumulation of G1 phase cells before S phase progression after injurious stimuli in the proximal tubule
http://hdl.handle.net/10271/2907
http://hdl.handle.net/10271/29070c773596-53db-4eb3-9a83-9ebc7ae6eb19
名前 / ファイル | ライセンス | アクション |
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論文本文 (3.9 MB)
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Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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公開日 | 2015-11-20 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | A high ratio of G1 to G0 phase cells and an accumulation of G1 phase cells before S phase progression after injurious stimuli in the proximal tubule | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Cell cycle | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | G0-G1 transition | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | G1 arrest | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | proximal tubule. | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||
資源タイプ | doctoral thesis | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
その他のタイトル | ||||||
その他のタイトル | 近位尿細管での高いG1/G0期細胞比率と傷害刺激後におけるS期進行前のG1期細胞蓄積 | |||||
言語 | ja | |||||
著者 |
Iwakura, Takamasa
× Iwakura, Takamasa |
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書誌情報 |
en : Physiological Reports 巻 2, 号 10, p. e12173, 発行日 2014 |
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出版者 | ||||||
言語 | en | |||||
出版者 | John Wiley and Sons | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Proximal tubule (PT) cells can proliferate explosively after injurious stimuli. To investigate this proliferative capacity, we examined cell cycle status and the expression of cyclin-dependent kinase inhibitor p27, a G1 phase mediator, in PT cells after a proliferative or injurious stimulus. Rats were treated with lead acetate (proliferative stimulus) or uranyl acetate (UA; injurious stimulus). Isolated tubular cells were separated into PT and distal tubule (DT) cells by density-gradient centrifugation. Cell cycle status was analyzed with flow cytometry by using the Hoechst 33342/pyronin Y method. Most PT and DT cells from control rats were in G0/G1 phase, with a higher percentage of PT cells than DT cells in G1 phase. Lead acetate and UA administration promoted the G0-G1 transition and the accumulation of G1 phase cells before S phase progression. In PT cells from rats treated with lead acetate or a subnephrotoxic dose of UA, p27 levels increased or did not change, possibly reflecting G1 arrest. In contrast, p27 became undetectable before the appearance of apoptotic cells in rats treated with a nephrotoxic dose of UA. The decrease in p27 might facilitate rapid cell cycling. The decreased number of p27-positive cells was associated with PT cell proliferation in renal tissues after a proliferative or injurious stimulus. The findings suggest that a high ratio of G1 to G0 phase cells and a rapid accumulation of G1 phase cells before S phase progression in the PT is a biological strategy for safe, timely, and explosive cell proliferation in response to injurious stimuli. | |||||
言語 | en | |||||
学位名 | ||||||
言語 | ja | |||||
学位名 | 博士(医学) | |||||
学位の区分 | ||||||
内容記述タイプ | Other | |||||
内容記述 | doctoral | |||||
言語 | en | |||||
学位の分野 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 医学系研究科 | |||||
言語 | ja | |||||
学位授与機関 | ||||||
学位授与機関識別子Scheme | kakenhi | |||||
学位授与機関識別子 | 13802 | |||||
言語 | ja | |||||
学位授与機関名 | 浜松医科大学 | |||||
学位授与年月日 | ||||||
学位授与年月日 | 2015-03-16 | |||||
学位授与番号 | ||||||
学位授与番号 | 甲第705号 | |||||
EISSN | ||||||
収録物識別子タイプ | EISSN | |||||
収録物識別子 | 2051-817X | |||||
PubMed番号 | ||||||
識別子タイプ | PMID | |||||
関連識別子 | 25293601 | |||||
出版社DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.14814/phy2.12173 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |