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  • Title: [Carcinogenic and promoting effects of fish juice, preserved rice and salted dry fish on the forestomach epithelium of mice and esophageal epithelium of rats].
    Author: Lin PZ, Zhang JS, Ding ZW, Cai HY.
    Journal: Zhonghua Zhong Liu Za Zhi; 1986 Sep; 8(5):332-5. PubMed ID: 3568985.
    Abstract:
    The carcinogenic and promoting effects of fish juice, preserved rice and salted dry fish from Nanau county, Guangdong province, a high incidence area of esophageal cancer, were studied in mice and rats. The homemade fish juice as well as fish juice in market, whether or not added with NaNO2, did not cause tumor in the forestomach of mice and the esophagus of rats. When the mice were intubated with an initiator, nitrososarcosinethylester (NSEE) twice, no carcinoma was found at the end of the experiment (D 120). Only papilloma appeared in the forestomach epithelium. The incidence was only 37.5%. However, when the mice were intubated with NSEE for 2 times followed by gastric doses of homemade fish juice, the tumor incidence in the forestomach was increased to 89.7%, in which 20.5% was carcinoma. The tumor and carcinoma incidences of initiator (NSEE and NMBzA) group and initiator + market fish juice group in mice and rats were without significant difference. The experimental results show that the homemade fish juice proved distinct promoting effect on the process of cocarcinogenesis initiated by NSEE in the forestomach of mice, while the market fish juice has no significant promoting effect on the forestomach epithelium of mice and the esophageal epithelium of rats. NSEE induced 31.6% carcinoma in the forestomach epithelium of mice on standard diet. While in mice fed with preserved rice and salted dry fish, the carcinoma incidence was increased to 63.6%. It appears that preserved rice and salted dry fish have promoting effect on the process of cocarcinogenesis initiated by NSEE in the forestomach of mice.(ABSTRACT TRUNCATED AT 250 WORDS)
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