401. A diffusable clastogenic factor in ataxia telangiectasia.
- Author
-
Shaham M, Becker Y, and Cohen MM
- Subjects
- Ataxia Telangiectasia pathology, Cell Division, Cells, Cultured, Culture Media, Diffusion, Female, Fibroblasts metabolism, Humans, Male, Mutagens adverse effects, Plasma metabolism, Ataxia Telangiectasia metabolism, Chromosome Aberrations, T-Lymphocytes metabolism
- Abstract
Cocultivation of plasma and lymphocytes from ataxia telangiectasia (AT) patients with those of normal individuals resulted in a significant increase in chromosomal damage in the normal cells. Tissue culture medium used to cultivate AT skin fibroblasts also significantly increased chromosome breakage in PHA-stimulated normal lymphocytes. This clastogenic effect was maximal when the "conditioned medium" was 8-9 days old. A similar effect was not observed with medium derived from normal skin fibroblasts. These observations suggest the presence of a clastogenic factor in the plasma of AT patients which may also be produced by AT skin fibroblasts in culture.
- Published
- 1980
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