Sister-chromatid exchange in highly purified human CD4+ and CD8+ lymphocytes.
Mutat Res
; 270(2): 125-33, 1992 Nov 16.
Article
em En
| MEDLINE
| ID: mdl-1383729
ABSTRACT
Sister-chromatid exchange (SCE) frequencies were determined in human peripheral blood CD4+ and CD8+ T lymphocyte subpopulations which were rapidly and highly purified from pooled T lymphocytes by immunological methods. The purified lymphocytes were stimulated with phytohemagglutinin (PHA) for 4 days. CD4+ lymphocytes showed significantly higher SCE frequencies than autologous CD8+ lymphocytes when measured simultaneously after identical bromodeoxyuridine (BrdU) incubation times. Differences in SCE frequencies between CD4+ and CD8+ lymphocytes were also detected when mitomycin C (MMC) was added to the cultures. Higher SCE frequencies in CD4+ lymphocytes were associated with lower proliferating rate indices (PRI) as compared to autologous CD8+ lymphocytes. Abnormalities in CD4+ T lymphocyte function and number in peripheral blood have been observed in several diseases characterized by immunological disorders. Thus, our data may suggest a link between some immunological disturbances and abnormal SCE frequencies in T lymphocyte subsets.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Troca de Cromátide Irmã
/
Linfócitos T
/
Linfócitos T CD4-Positivos
/
Subpopulações de Linfócitos T
Limite:
Humans
Idioma:
En
Revista:
Mutat Res
Ano de publicação:
1992
Tipo de documento:
Article
País de afiliação:
Grécia