The radiation sensitivity of human chromosomes 2, 8 and 14 in peripheral blood lymphocytes of seven donors.
Int J Radiat Biol 2009;
81:741-9. [PMID:
16449081 DOI:
10.1080/09553000500499381]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE
To investigate if deviations from DNA-proportional distribution of radiation-induced chromosomal aberrations are individually variable.
MATERIALS AND METHODS
Peripheral blood lymphocytes were collected from seven healthy donors and exposed to different doses of gamma rays. Chromosomes 2, 8 and 14 were painted in different colors and aberrations scored with the help of an image-analysis system.
RESULTS
Chromosome 2 was generally less sensitive than expected on the basis of DNA-proportional distribution and the extent of inter-donor variability was minimal. A higher than expected frequency of aberrations was found in chromosome 14 of five donors, while a higher than expected frequency of aberrations was found in chromosome 8 of two donors.
CONCLUSIONS
Inter-donor variability may explain some of the controversies regarding the inter-chromosomal distribution of radiation-induced aberrations.
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