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Chromosome aberrations in B lymphocytes of atomic bomb survivors

N Kamada, A Kuramoto, T Katsuki and Y Hinuma

Although chromosome aberrations in T lymphocytes and bone marrow cells have been reported in atomic bomb survivors, the presence of chromosome abnormalities has not been demonstrated in B lymphocytes because of the technical difficulties involved in B-lymphocyte separation. A method for detecting chromosome aberrations in B lymphocytes was established by "stimulation" of B lymphocytes with Epstein-Barr virus (EBV) instead of "separation" of B lymphocytes by rosette formation. The EBV- stimulated lymphocytes were isolated as single colonies in soft agar and transferred to liquid culture for further cell growth. The EBV- stimulated B lymphocytes of two heavily exposed survivors showed 50% and 12.5% chromosome abnormalities 30 yr after exposure to the effects of the atomic bomb. The former patient seemed to have a karyotypically abnormal clone of B lymphocytes in vivo. The method used in this study and the evidence of chromosome aberrations in B lymphocytes for long periods after radiation exposure will be useful and important in elucidating the malignant processes of acute lymphocytic leukemia, B- cell lymphoma, and multiple myeloma among high-risk groups having a history of accidental or therapeutic exposure to radiation or radiomimetic drugs.

Volume 53, Issue 6, pp. 1140-1147, 06/01/1979
Copyright © 1979 by The American Society of Hematology


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  Copyright © 1979 by American Society of Hematology         Online ISSN: 1528-0020