Gastric Cancer: 非伤寒沙门氏菌病在胃癌中的潜在作用

2020-11-21 MedSci原创 MedSci原创

癌症是公共卫生事业的最大挑战,尽管研究人员致力于攻克癌症做出了许多努力,但它仍然是人类死亡的主要原因。

         癌症是公共卫生事业的最大挑战,尽管研究人员致力于攻克癌症做出了许多努力,但它仍然是人类死亡的主要原因。自二十世纪初以来,感染已成为引起癌症的基本因素,越来越多的病原体被认为是致癌的。细菌可能通过引起炎症,释放毒素和代谢产物并在其生命周期中重新编程宿主细胞的信号传导途径而参与癌细胞的形成,鉴定这种传染性病原体是打破这种潜在的致癌链并防止正常细胞转化为癌细胞的重要而有效的方法。在最近的研究,非伤寒沙门氏菌(NTS)被发现与结肠癌相关,在美国,沙门氏菌病的发病率每年超过1000000例,NTS可以抵抗胃中的酸性环境并在大肠和小肠中定植,由于NTS对消化道的影响及其在癌症中的作用有争议的,因此,研究人员进行了一项基于人群的纵向队列研究,以提供有关非伤寒沙门氏菌感染在胃癌后续发展中潜在作用的流行病学证据。

 

        研究人员通过分析台湾国家健康保险研究数据库中的住院数据进行了回顾性研究。 纳入2000年1月1日至2012年12月31日期间的20岁及以上的NTS感染患者(n = 9097),并对其进行随访。主要观察结局是胃癌的发生率。使用Cox比例风险回归来估计恶性肿瘤的风险,并考虑死亡的竞争风险。此外,通过倾向评分匹配和排除恶性肿瘤的方法在1年内进行了敏感性分析,以最大程度地减少可测量的混淆和原发性偏倚。

 

 

        该研究包括18194名患者(NTS组和非NTS组均为9097名)。中位随访时间为7年。NTS组的胃癌发生率为0.72/1000人年,非NTS组为0.40/1000人年。与非NTS组相比,NTS组患胃癌的风险略高(aHR,2.02; 95%CI 1.18–3.45)。

 

 

        研究最后,作者说道:与非NTS感染患者相比,NTS感染患者发生胃癌的风险明显增加。需要进一步的研究来检查NTS是否与胃癌的发病原因相关,还是只是平行关系。

 

 

原始出处:

Renin Chang. Et al. The potential role of nontyphoidal salmonellosis in gastric cancer: a nationwide matched cohort study. Gastric Cancer.2020.

 

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    2021-06-01 许安
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    2021-09-11 skhzy
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