Sister-chromatid exchanges in lymphocytes from methimazole-induced hypothyroid mice.
Mutat Res
; 326(2): 193-7, 1995 Feb.
Article
em En
| MEDLINE
| ID: mdl-7529884
ABSTRACT
The inhibitory effect of an antithyroid drug on mouse T lymphocytes was investigated. Inbred C57BL/6 mice were provided with an antithyroid drug, methimazole, for 2, 4 and 6 weeks and the in vitro responses of the lymphocytes were studied. The proliferative responses of T lymphocytes from the spleen of methimazole (MMI)-treated mice significantly (p < 0.05) decreased following concanavalin A stimulation, and the inhibitory effect became prominent with the increased duration of MMI treatment. A concomitant increase in the frequency of induced sister-chromatid exchanges was also observed in these T lymphocytes. When the splenocytes were stimulated with concanavalin A for 24 h, their ability to produce interleukin-2 (IL-2) was significantly decreased (p < 0.05). The results indicated that methimazole interfered with the normal proliferation of T lymphocytes by suppressing the production of IL-2, a cytokine also known as T cell growth factor, as well as inducing a higher incidence of sister-chromatid exchange during cell division.
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Base de dados:
MEDLINE
Assunto principal:
Troca de Cromátide Irmã
/
Linfócitos T
/
Imunossupressores
/
Metimazol
Limite:
Animals
Idioma:
En
Ano de publicação:
1995
Tipo de documento:
Article