Related Experiment Video
Updated: May 2, 2026

Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance
Published on: March 7, 2025
Long-term pretreatment with proton pump inhibitor and Helicobacter pylori eradication rates
Seung Bae Yoon1, Jae Myung Park1, Jong-Yul Lee1
1Seung Bae Yoon, Jae Myung Park, Jong-Yul Lee, Myong Ki Baeg, Chul-Hyun Lim, Jin Soo Kim, Yu Kyung Cho, In Seok Lee, Sang Woo Kim, Myung-Gyu Choi, Division of Gastroenterology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-856, South Korea.
Aim:
To investigate whether proton pump inhibitor (PPI) pretreatment influences Helicobacter pylori eradication rate.
Methods:
We retrospectively reviewed H. pylori-infected patients who were treated with a standard triple regimen (PPI, amoxicillin 1 g, and clarithromycin 500 mg, all twice daily for 7 d). The diagnosis of H. pylori infection and its eradication was assessed with the rapid urease test, histological examination by silver staining, or the ¹³C-urea breath test. We divided the patients into two groups: one received the standard eradication regimen without PPI pretreatment (Group A), and the other received PPI pretreatment (Group B). The patients in Group B were reclassified into three groups based on the duration of PPI pretreatment: Group B-I (3-14 d), Group B-II (15-55 d), and Group B-III (≥ 56 d).
Results:
A total of 1090 patients were analyzed and the overall eradication rate was 80.9%. The cure rate in Group B (81.2%, 420/517) was not significantly different from that in Group A (79.2%, 454/573). The eradication rates in Group B-I, B-II and B-III were 80.1% (117/146), 81.8% (224/274) and 81.4% (79/97), respectively.
Conclusion:
PPI pretreatment did not affect H. pylori eradication rate, regardless of the medication period.
More Related Videos
Related Concept Videos
Treating Helicobacter pylori in Peptic Ulcers: Antimicrobial Therapy
Peptic Ulcer Disease IV: Management
The therapeutic approach involves ensuring adequate rest, implementing drug therapy, promoting smoking cessation, making dietary modifications, and emphasizing long-term follow-up care.
Pharmacological management
The prevailing therapy for peptic ulcers involves a combination of managing the patient's current...
Acid Suppressive Drugs for Peptic Ulcer Disease: Proton Pump Inhibitors
Gastric acid, a potent cocktail of hydrogen and chloride ions, is produced in specialized parietal cells within the...
Peptic Ulcer Disease II: Pathophysiology
Peptic Ulcer Disease II: Pathophysiology
Damaging agents such as Helicobacter pylori, gastric acid, pepsin, and nonsteroidal anti-inflammatory drugs (NSAIDs) can weaken the mucosal defense, allowing hydrogen ions to infiltrate back and harm epithelial cells.
Gastritis II: Pathophysiology

