Chromosome Aberration Analysis in Persons Exposed to Low-level Radiation from the JCO Criticality Accident in Tokai-mura | Zendy

Masao S. Sasaki | Zendy; Nanao Kamada | Zendy; Yoshiaki Kodama | Zendy; Seiji Kodama | Zendy

Open Access

Chromosome Aberration Analysis in Persons Exposed to Low-level Radiation from the JCO Criticality Accident in Tokai-mura

Author(s) -

Masao S. Sasaki,

Nanao Kamada,

Yoshiaki Kodama,

Seiji Kodama

Publication year - 2001

Publication title -

journal of radiation research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.643

H-Index - 60

eISSN - 1349-9157

pISSN - 0449-3060

DOI - 10.1269/jrr.42.s107

Subject(s) - dicentric chromosome , chromosome aberration , radiation , chromosome , criticality , ring chromosome , gamma ray , nuclear medicine , biology , radiochemistry , physics , medicine , genetics , chemistry , nuclear physics , karyotype , gene

Chromosome aberrations were studied in peripheral blood lymphocytes of 43 persons who were exposed to low-level radiation of mixed neutrons and gamma-rays resulting from the JCO criticality accident. When the age-adjusted frequencies of dicentric and ring chromosomes were compared with the dose calibration curve established in vitro for 60Co gamma-rays as a reference radiation, a significant correlation was observed between the chromosomally estimated doses and the documented doses evaluated by physical means. The regression coefficient of the chromosomal doses against the documented doses, 1.47 +/- 0.33, indicates that the relative biological effectiveness of fission neutrons at low doses is considerably higher than that currently adopted in the radiation protection standard.

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