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材料与方法:(1)绿茶提取物是从南京青泉茶场提供的绿茶(龙雾茶)中提取的抗癌有效部份(简称681)。(2)气相色谱仪(SP-2305型),北京分析仪器厂产品。(3)热能分析仪(TEA54B型),美国热电子公司出品。(4)1%L-脯氨酸溶液。(5)受试人群:山东省牟平县胃癌高发区人群,根据胃内粘膜不同病变程度分为三组:①正常及浅表胃炎组,②肠生化组,③胃癌及不皆型增生组。
Materials and methods: (1) Green tea extract is an effective anti-cancer compound extracted from the green tea (Longwu tea) provided by Nanjing Qingquan Tea Plant (abbreviated as 681). (2) Gas chromatograph (SP-2305 type), Beijing Analytical Instrument Factory product. (3) Thermal energy analyzer (TEA54B type), produced by American Thermal Electronics. (4) 1% L-proline solution. (5) Subjects: The population of high incidence of gastric cancer in Chiping County, Shandong Province was divided into three groups according to the degree of gastric mucosal lesions: 1 normal and superficial gastritis group, 2 intestinal biochemical group, 3 gastric cancer and heterogeneous type hyperplasia group.