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幽门螺杆菌cagA基因3 端多态性分析及其临床意义 |
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与萎缩性胃炎、胃癌有关,但是仅少数菌株含特殊序列特征;这说明除菌株因素外,还有其他因素引起H.pylori感染临床结局的不同,如宿主因素就是其中另一个重要因素。最近研究发现IL、TNF等细胞因子的多态性和H.pylori感染及H.pylori相关临床疾病都有关系[18,19]。还有报道显示编码SHP-2的PTPN-11基因突变与许多人类恶性疾病有关[20,21]。H.pylori感染是胃癌发生多因素、多步骤过程中的一个因素,影响其中一个步骤或多个步骤,还有其他许多因素影响H.pylori感染后致病的最终结局。 【参考文献】 1 Warren JR,Marshall BJ.Unidentified curced bacilli on gastric epithelium in active chronic gastritis.Lahcet,1983,1(8336):1273-1275.
2 Odenbreit S,et al.Translocation of Helicobacter pylori CagA into gastric epithelial cells by type Ⅳ secretion.Science,2000,287:1497-1500.
3 Segal ED,Cha J,Lo J,et al.Altered states: involvement of phosphorylated CagA in the induction of host cellular growth changes by Helicobacter pylori.Proc Natl Acad Sci USA,1999,96:14559-14564.
4 Asahi M.Helicobacter pylori CagA protein can be tyrosine phosphorylated in gastric epithelial cells.J Exp Med,2000,191:593-602.
5 Stein M,Rappuoli R,Covacci A.Tyrosine phosphorylation of the Helicobacter pylori CagA antigen after cag-driven host cell translocation.Proc Natl Acad Sci.USA,2000,97:1263-1268.
6 Higashi H. SHP-2 tyrosine phosphatase as an intracellula
r target of Helicobacter pylori CagA protein.Science,2002,295(5555):683-686.
7 Kuipers EJ,Perez GI,Meuwissen SG,et al.Helicobacter pylori and atrophic gastritis:importance of the cagA status.J Natl Cancer Inst,1995,87:1777-1780.
8 Huang JQ,Zheng GF,Sumanac K,et al.Meta-analysis of the relationship between cagA s-eropositivity and gastric cancer.Gastroenterology,2003,125:1636-1644.
9 Maeda S,Ogura K,Yoshida H,et al.Major virulence factors,VacA and CagA,are commonly positive in Helicobacter pylori isolates in Japan.Gut,1998,42(3) : 338.
10 Zheng PY,Hua J,Yeoh KG,et al.Association of peptic ulcer with increased expression of lewis antigens but not cagA,iceA,and vacA in Helicobacter pylori isolates in an Asian population上一页 [1] [2] [3] [4] [5] [6] [7] 下一页 上一个医学论文: 乙酰甲胆碱浓度 FEV1 预计值与CVA预后的相关性分析 下一个医学论文: 胰岛素强化治疗对高血糖危重症患者抢救成功率的影响
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