A cytogenetic comparison of the responses of mouse and human peripheral blood lymphocytes to 60Co gamma radiation.

Published

Journal Article

Experiments were conducted to compare the chromosome damaging effects of 60Co gamma radiation on mouse and human peripheral blood lymphocytes (PBLs). Either whole blood or isolated and pelleted mononuclear leucocytes (MNLs) were irradiated with a 60Co unit to yield exposures of 1, 2, 3, or 4 Gy. In addition, mice were whole-body irradiated in vivo with the same doses so that an in vitro-in vivo comparison could be made. The results indicate that mouse PBLs irradiated in whole blood, whether in vivo or in vitro, respond similarly to 60Co gamma rays as measured by dicentric chromosome formation. In addition, mouse and human PBLs showed a similar radiosensitivity, but because the mouse PBL data were best fitted to an exponential function and the human PBL data to a quadratic function, direct comparisons were difficult to make. Pelleted MNLs from mice were much less sensitive to the clastogenic effects of gamma radiation than whole blood. This is believed to be due to hypoxic conditions that developed during irradiation and transport. Human PBLs did not show a marked difference whether irradiated in whole blood or as pelleted MNLs in tissue culture medium.

Full Text

Duke Authors

Cited Authors

  • Kligerman, AD; Halperin, EC; Erexson, GL; Honoré, G; Westbrook-Collins, B; Allen, JW

Published Date

  • August 1988

Published In

Volume / Issue

  • 115 / 2

Start / End Page

  • 334 - 346

PubMed ID

  • 3043538

Pubmed Central ID

  • 3043538

International Standard Serial Number (ISSN)

  • 0033-7587

Language

  • eng

Conference Location

  • United States