The Role of Helicobacter Pylori in Pancreatico-Biliary Disease

Objective : The role of Helicobacter pylori (Hp) in benign and malignant pancreatico-biliary tract disease is concerned in recent papers. The urease gene of Hp were found in human bile, and bacteria morphologically resembling Hp were found in resected gallbladder mucosa from patients with gallbladder disease. It was hypothesized that there is an association between the presence of Hp in bile and pancreatico-biliary disease. The aims of this study are to examine if Hp exist in the bile juice and to investigate whether Hp plays a role in the pancreatico-biliary disease. Methods : Thirty-eight patients (18 males and 20 females, mean age 71 +/- 27yr; range 45-92 yr) with gallstone and malignant pancreatico-biliary disease were enrolled in this study; 23 cases were gallstone diseases, 10 cases were cholangiocarcinomas, and 5 cases were pancreatic cancers. Thirty-eight controls were age-and sex-matched and enrolled from subject attending routine medical check-up. The presence of Hp in stomach was confirmed by C-14-breath test. The polymerase chain reaction (PCR) assay was used to detect the Hp in bile. Results : The Hp-positive rate in stomach was much higher in control (26/38, 68.4%) than the patients with pancreatico-biliary disease (11/38, 28.9%) (p <0.01). The Hp-positive rate in bile of pancreatico-biliary disease was 18.4% but, there is no relation between of the presence of Hp in the stomach and in the bile (p=0.33). Also there was no significant difference of the presence of Hp in bile (p>0.05) and stomach (p=0.28) between benign and malignant disease. Conclusion : The Hp-positive rate in bile was similar in benign and malignant pancreaticobiliary disease. But Hp may not be important risk factor in pancreatico-biliary disease in Hp prevalent country like south Korea.