不同消化性疾病患者幽门螺杆菌毒力基因类型及意义研究

目的分析用不同消化性疾病来源的幽门螺杆菌(Hp)毒力基因的检测结果及其意义。方法收集该院胃镜室于2015年1月至2016年7月采集的628例患者胃活检标本,分离培养Hp,检测其携带的毒力基因,并探讨Hp与慢性萎缩性胃炎(CAG)、慢性浅表性胃炎(CSG)、消化性溃疡(PUD)的相关性。结果 628份胃活检标本中成功分离出214株Hp,选取其中172株提取DNA,发现Hp携带cagA、vacA、dupA、iceA、oipA、luxS多种毒力基因,其中vacA s1m1是CSG的危险因素,vacA s1m2与iceA1+/iceA2+提高PUD的发生率,dupA+提高十二指肠溃疡危险度。结论不同消化性疾病与Hp感染密切相关,dupA可考虑作为Hp致十二指肠溃疡的标记基因,vacA s1m2与iceA1+/iceA2+增加了发生PUD的危险性。

Study on the types and clinical value of virulence genes of Helicobacter pylori from different digestive diseases patients

Objective To investigate the clinical value and pathogenic mechanism of virulence genes of Helicobacter pylori from different sources of digestive diseases patients.Methods From January 2015 to July 2016,628 cases of gastric biopsy samples were collected from gastroscopy room of People′s Hospital of Wuwei City,through separating and culturing of Helicobacter pylori,detecting of viral virulence genes,to explore the relationship between Helicobacter pylori and chronic atrophic gastritis CAG),chronic superficial gastritis(CSG),peptic ulcer(PUD).Results Among the 628 gastric biopsy specimens,214 cases of Helicobacter pylori were successfully isolated,and 172 strains were serected to extracting DNA,which contained various virulence genes of cagA,vacA,dupA,iceA,oipA and luxS.VacA s1m1 was a risk factor for CSG,VacA s1m2 and iceA1+/iceA2+ increased the incidence of PUD,DupA + increased the risk of duodenal ulcer.Conclusion Different digestive diseases and Hp infection were related closely,dupA was considered as Hp induced duodenal ulcer marker gene,vacA s1m2 and iceA1+/iceA2+ increased the risk of PUD.