Role of Helicobacter pylori Eradication in Diarrhea-predominant Irritable Bowel Syndrome / 胃肠病学

ABSTRACT

Background:Irritable bowel syndrome (IBS)is a commonly seen functional intestinal disorder. The association between Helicobacter pylori (Hp)infection and IBS is not clarified yet. Aims:To investigate the role of Hp eradication in diarrhea-predominant IBS (IBS-D)and the relationship between Hp infection and IBS-D. Methods:A total of 335 IBS-D patients and 335 health examination subjects were recruited from Jan. 2009 to Dec. 2015 at Transportation Center Hospital of Yunnan Province and People's Hospital of Xishuangbanna Dai Autonomous Prefecture. All IBS-D patients were hospitalized patients and fulfilled the Rome Ⅲ criteria. Positive for both rapid urease test and 14 C-urea breath test was defined as Hp infection. Hp-positive IBS-D patients recruited in 2005 received Hp eradication therapy and were allocated into two groups according to the results of eradication therapy. Pinaverium bromide and montmorillonite powder were given in both groups and the clinical efficacy for IBS symptoms was assessed after treatment and followed up for 6 months. Results:The Hp infection rate of IBS-D patients was significantly higher than that in healthy controls (53. 7% vs. 41. 8%,P 0. 05). After a 6-month follow up,the differences were still insignificant (P > 0. 05). Conclusions:Hp infection is more prevalent in IBS-D patients than in general population,however,eradication of Hp has no impact on IBS symptoms. The association between Hp infection and IBS-D needs further study.