上消化道癌及亲属中幽门螺杆菌感染的流行病学调查

目的　调查幽门螺杆菌(Hp)感染与上消化道癌危险性的关系。方法　在江苏省淮安市和邳州市,应用HpIgG定量酶联免疫(ELISA)检测试剂盒,随机检测312例上消化道癌及其健康一级亲属对照人群外周血中抗HpIgG。结果　①胃癌患者中HpIgG抗体水平(阳性率50.0%)高于贲门癌患者和食管癌患者(P>0.05,χ2检验);贲门癌患者与食管癌患者之间,以上三类癌症病例与其自身亲属对照之间,差异亦不明显;②胃癌组病例与亲属同时感染Hp的阳性率(27.1%)显著高于贲门癌组和食管癌组(P<0.05),后两组之间无明显差异。结论　Hp感染在胃癌家族中存在明显家庭聚集现象,Hp感染与胃癌危险性的关系有待进一步观察。

Study on seroprevalence of Helicobacter Pylori infection among upper digestive tract cancer patients and their kindreds

OBJECTIVE: In order to analyse the association between Hp infection and the risk of upper-digestive tract cancer. METHODS: In Huaian and Pizhou cities, Jiangsu province, Hp IgG quantitative-enzyme-immunoassay methods was used to identify IgG to H.pylori in the serum of 312 cases of upper-digestive tract cancer patients and their kindreds. RESULTS: (1) The level of IgG to H. pylori and the IgG positive rate (50.0%) in gastric cancer patients were both higher than that of cardia and esophageal cancer patients (P > 0.05, chi 2 test) but no significant differences were observed between cardia and esophageal cancer patients, 3 types of cancer patients and their kindreds; (2) the overall positive rates of both patients and kindreds in gastric cancer families (27.1%) were significantly higher than that of cardia or esophageal cancer families (P < 0.05) but no significant differences were observed between cardia and esophageal groups. CONCLUSION: H.pylori infection was not thought to be correlated with the development of gastric cancer, although higher clustering of Hp infection in families afflicted with gastric cancer was noticed.