| Recruitment of cells in the small intestine into rapid cell cycle by small doses of external gamma or internal beta-radiation. | |
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MedLine Citation:
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PMID: 3875577 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Epithelial cell recruitment was examined in mouse ileum after external gamma-irradiation (50 cGy) or internal beta-irradiation (0.148 MBq/g of [3H]thymidine), using the per cent-labelled-mitoses method and by analysing the distribution of mitotic cells in the crypts. In the presumptive stem cell zone at the lower cell positions of the crypt, the slowly cycling cells decreased their cell cycle 6 or 12 hours after a dose of 50 cGy. In the higher cell positions, a slight shortening of the cell cycle was also observed. After administration of a high dose of [3H]thymidine, dormant (G0) cells also entered the cell cycle in the lower cell positions. The results suggest that stem cells in the crypt may react to irradiation in two ways: first, by shortening the cell cycle in cycling cells; secondly, by an entry into the cell cycle by other dormant cells. There was destruction of some cycling stem cells before any recruitment. The data support the idea that the stem cell population in the crypt is heterogeneous. |
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Authors:
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S Tsubouchi; C S Potten |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: International journal of radiation biology and related studies in physics, chemistry, and medicine Volume: 48 ISSN: 0020-7616 ISO Abbreviation: Int. J. Radiat. Biol. Relat. Stud. Phys. Chem. Med. Publication Date: 1985 Sep |
Date Detail:
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Created Date: 1985-10-18 Completed Date: 1985-10-18 Revised Date: 2009-11-19 |
Medline Journal Info:
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Nlm Unique ID: 0374725 Medline TA: Int J Radiat Biol Relat Stud Phys Chem Med Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 361-9 Citation Subset: IM |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Beta Particles Cell Cycle / radiation effects Gamma Rays Ileum / cytology, radiation effects Interphase / radiation effects Intestinal Mucosa / cytology, radiation effects* Mice Mitosis / radiation effects Stem Cells / radiation effects |
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