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年龄对大鼠经3,2'-二甲基-4-氨基联苯诱导的多器官致癌作用的影响,尤其涉及前列腺。

Effects of age on multiple organ carcinogenesis induced by 3,2'-dimethyl-4-aminobiphenyl in rats, with particular reference to the prostate.

作者信息

Shirai T, Nakamura A, Fukushima S, Takahashi S, Ogawa K, Ito N

机构信息

First Department of Pathology, Nagoya City University Medical School.

出版信息

Jpn J Cancer Res. 1989 Apr;80(4):312-6. doi: 10.1111/j.1349-7006.1989.tb02312.x.

Abstract

The effects of age on multi-organ carcinogenesis induced by 3,2'-dimethyl-4-aminobiphenyl (DMAB) in male F344 rats were examined. Groups of 5-, 35-, and 65-week-old animals were given 4 weekly sc injections of DMAB at a dose of 200 or 150 mg/kg body weight. Prostate carcinomas were induced in 8 to 19% of rats treated, no significant differences in the incidence between different ages being observed. Tumors in the small intestine, skin, pancreas and peritoneum, however, developed more frequently in young than in old animals, whereas higher incidences of testis, preputial and mammary gland lesions were found in the 35- and/or 65-week-old groups. Colon and Zymbal gland carcinogenesis did not reveal any age dependence.

摘要

研究了年龄对雄性F344大鼠由3,2'-二甲基-4-氨基联苯(DMAB)诱导的多器官致癌作用的影响。将5周龄、35周龄和65周龄的动物分组,每周皮下注射4次DMAB,剂量为200或150mg/kg体重。接受治疗的大鼠中有8%至19%诱发了前列腺癌,未观察到不同年龄组之间的发病率有显著差异。然而,小肠、皮肤、胰腺和腹膜中的肿瘤在年轻动物中比在老年动物中更频繁地发生,而在35周龄和/或65周龄组中发现睾丸、包皮和乳腺病变的发生率更高。结肠和齐默尔氏腺的致癌作用未显示出任何年龄依赖性。

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