EFFECT OF NOCARDIA-RUBRA CELL-WALL SKELETON ON THE INDUCTION OF LUNG-CANCER IN ACI-N RATS

被引:0
作者
NAMBA, M [1 ]
YOSHIMOTO, T [1 ]
OGURA, T [1 ]
HIRAO, F [1 ]
AZUMA, I [1 ]
YAMAMURA, Y [1 ]
机构
[1] OSAKA UNIV, SCH MED, DEPT INTERNAL MED 3, FUKUSHIMA KU, OSAKA 553, JAPAN
来源
GANN | 1979年 / 70卷 / 01期
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中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
In ACI/N rats administration of oil-attached N. rubra cell-wall skeleton (CWS) was evaluated for its effect on lung cancer induction. Lung cancers were induced by 15 weekly intratracheal instillations of 3 mg benzo[a] pyrene with 3 mg ferric oxide. After the 10th instillation of the carcinogen, rats received 7 s.c. injections of 100 .mu.g of N. rubra-CSW at 2 wk intervals. In the observation period of 56 wk, the cumulative incidence of lung cancer was 71.4% in the control group and 48.0% in the N. rubra-CWS treated group. The latent period of tumor induction was prolonged in the group treated with N. rubra-CWS.
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页码:55 / +
页数:1
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