Induction of DNA repair synthesis by ultraviolet radiation and methylmethanesulphonate in cultured mouse lymphocytes.
Cancer Lett
; 18(1): 21-7, 1983 Feb.
Article
en En
| MEDLINE
| ID: mdl-6825071
ABSTRACT
The induction of DNA repair synthesis by UV-radiation and methyl-methanesulphonate (MMS) was studied in mouse lymphocytes and leukemic cells by means of autoradiography and scintillation counting, after labelling in vitro with tritiated thymidine ([3H]dThd). Repair stimulation was detected by both procedures in LSTRA and YC8 leukemic cell lines as well as in primary fibroblasts of BALB/c and BALB/Mo mice. No stimulation was observed in primary cultures of lymphocytes from the spleen, thymus and lymph-nodes of the same mice. In primary lymphocytes neither stimulation with concanavalin A (Con A) nor pre-incubation with 5-bromodeoxyuridine (BUdR) were effective in making evident DNA repair. The data put into question the reliability of the repair test for the prediction of carcinogenic potential of chemicals.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Rayos Ultravioleta
/
Linfocitos
/
Reparación del ADN
/
Metilmetanosulfonato
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
Cancer Lett
Año:
1983
Tipo del documento:
Article