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Immune function in aging atomic bomb survivors residing in the United States

Journal Article · · Radiat. Res.; (United States)
DOI:https://doi.org/10.2307/3576223· OSTI ID:5016465
 [1]; ; ; ; ;
  1. VA West Los Angeles Medical Center, Los Angeles, CA
Immunologic parameters were studied among survivors of the 1945 atomic bombs who now reside in the United States. Of all known survivors living in the US, about 40% (n = 189) participated in this study. Of those survivors on whom radiation exposure information was available (n = 168), 96% were exposed to less than 50 rad at the time of the bomb (ATB). Survivors were divided into two groups; those exposed to varying low doses of radiation (S/sub +/ group, exposed at less than or equal to 2500 m from the hypocenter) were compared with those exposed to 0 rad (S/sub 0/ group, exposed at > 2500 m from the hypocenter). Of the former group, 92% were exposed to less than 100 rad and 89% to less than 50 rad ATB. Cellular immune responses, including natural cell-mediated cytotoxicity (NCMC), interferon production, and the mitogenic response to PHA, tended to be higher among S/sub +/ individuals, although only the different for NCMC was statistically significant. This was suggestive of a trend which was consistent with the higher serum interferon levels and lower frequencies of detectable immune complexes and antimitochondrial antibodies among the S/sub +/ group, although these differences were not statistically significant.
OSTI ID:
5016465
Journal Information:
Radiat. Res.; (United States), Journal Name: Radiat. Res.; (United States) Vol. 96:2; ISSN RAREA
Country of Publication:
United States
Language:
English