Role of Helicobacter pylori in gastric cancer： Updates

• 作者: Jahanarah Khatoon Ravi Prakash Rai Kashi Nath Prasad
• 来源期刊: 世界胃肠肿瘤学杂志：英文版（电子版）
• 学科: 医学
• 关键词: Cag PATHOGENICITY island GASTRIC cancer GASTRIC MUCOSA HELICOBACTER PYLORI Type Ⅳ secretionsystem
• 年，卷（期）: 2016,（2）
• 页码范围: 147-158
• 页数: 12页
• 分类号: R

摘要

Helicobacter pylori （H. pylori ） infection is highly prevalentin human, affecting nearly half of the world＇spopulation; however, infection remains asymptomaticin majority of population. During its co-existence withhumans, H. pylori has evolved various strategies tomaintain a mild gastritis and limit the immune responseof host. On the other side, presence of H. pylori is alsoassociated with increased risk for the development ofvarious gastric pathologies including gastric cancer （GC）.A complex combination of host genetics, environmentalagents, and bacterial virulence factors are consideredto determine the susceptibility as well as the severityof outcome in a subset of individuals. GC is one of themost common cancers and considered as the third mostcommon cause of cancer related death worldwide. Manystudies had proved H. pylori as an important risk factorin the development of non-cardia GC. Although both H.pylori infection and GC are showing decreasing trendsin the developed world, they still remain a major threatto human population in the developing countries. Thecurrent review attempts to highlight recent progress inthe field of research on H. pylori induced GC and aimsto provide brief insight into H. pylori pathogenesis,the role of major virulence factors of H. pylori thatmodulates the host environment and transform thenormal gastric epithelium to neoplastic one. This reviewalso emphasizes on the mechanistic understanding ofhow colonization and various virulence attributes of H.pylori as well as the host innate and adaptive immuneresponses modulate the diverse signaling pathways thatleads to different disease outcomes including GC.