Cytogenetic Findings 30 Years after Low Level Exposure to the Nagasaki Atom Bomb

概要

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Chromosome aberrations in the peripheral blood lymphocytes were studied in seventeen Australian former prisoners of war who had been exposed to about 50 rads whole body radiation thirty years previously at Nagasaki. Only three yielded individual discernible evidence of remaining radiation damage to the chromosomes of their lymphocytes. In comparing the cytogenetic findings in this exposed group with other Australians at Nagasaki who were not exposed, distinction was not possible between the groups using the criterion of dicentrics/cell. Howeve, distinction could be made on a hits/cell basis. Australian prisoners of war in the Nasasaki area at the time of the atomic bomb (11 a. m. , August 9th, 1945) form the subject of this study of remaining radiation damage within their lymphocytes. The examinations were made between July 1974 and October 1975, approximately 30 years after the radiation exposure of these subjects. Lymphocytes were chosen for radiation dosimetry because the method for display of radiation damage in the chromosomes oi lyrnphocytes has been clearly defined in this laboratory (Barnes and lbery;Chee and Ilbery) and a calibration curve relating absorbed radiation dose in vitro to chromosome damage has been established for dicentrics/cell (Chee, Ilbery and Rickinson;Chee and Ilbery).
日本放射線影響学会の論文
1977-05-00