Immune response to Helicobacter pylori infection and gastric cancer development  

作　　者：Breno Bittencourt de Brito Fabian Fellipe Bueno Lemos Caroline da Mota Carneiro Andressa Santos Viana Nilo Manoel Pereira Vieira Barreto Gabriela Alves de Souza Assis Barbara Dicarlo Costa Braga Maria Luísa Cordeiro Santos Filipe Antônio França da Silva Hanna Santos Marques Natália Oliveira e Silva Fabrício Freire de Melo 

机构地区：[1]Instituto Multidisciplinar em Saúde,Universidade Federal da Bahia,Vitória da Conquista 45029-094,Bahia,Brazil [2]Campus Vitória da Conquista,Universidade Estadual do Sudoeste da Bahia,Vitória da Conquista 45031900,Bahia,Brazil

出　　处：《World Journal of Meta-Analysis》2021年第3期257-276,共20页世界荟萃分析杂志

摘　　要：Gastric adenocarcinoma is a global health concern,and Helicobacter pylori(H.pylori)infection is the main risk factor for its occurrence.Of note,the immune response against the pathogen seems to be a determining factor for gastric oncogenesis,and increasing evidence have emphasized several host and bacterium factors that probably influence in this setting.The development of an inflammatory process against H.pylori involves a wide range of mechanisms such as the activation of pattern recognition receptors and intracellular pathways resulting in the production of proinflammatory cytokines by gastric epithelial cells.This process culminates in the establishment of distinct immune response profiles that result from the cytokine-induced differentiation of T naïve cells into specific T helper cells.Cytokines released from each type of T helper cell orchestrate the immune system and interfere in the development of gastric cancer in idiosyncratic ways.Moreover,variants in genes such as single nucleotide polymorphisms have been associated with variable predispositions for the occurrence of gastric malignancy because they influence both the intensity of gene expression and the affinity of the resultant molecule with its receptor.In addition,various repercussions related to some H.pylori virulence factors seem to substantially influence the host immune response against the infection,and many of them have been associated with gastric tumorigenesis.

关 键 词：Gastric cancer Helicobacter pylori Immune response Virulence factors POLYMORPHISMS 

分 类 号：R57[医药卫生—消化系统]