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Updated: Apr 29, 2026

Gastric Mucosa Quantitative Polymerase Chain Reaction Analysis for Detecting Helicobacter pylori and Antibiotic Resistance
Published on: March 7, 2025
Helicobacter pylori: management in 2013.
Yesim Ozen Alahdab1, Cem Kalayci1
1Yesim Ozen Alahdab, Department of Gastroenterology and Hepatology, Fatih Sultan Mehmet Education and Research Hospital, 34752 Istanbul, Turkey.
Choosing the right Helicobacter pylori (H. pylori) treatment depends on antibiotic resistance. Regimens like quadruple or sequential therapy aim for over 80% eradication, with rescue treatments guided by susceptibility testing.
Area of Science:
- Gastroenterology
- Infectious Diseases
- Microbiology
Background:
- Helicobacter pylori (H. pylori) infection is a widespread global health concern.
- Treatment strategies must adapt to varying H. pylori antibiotic resistance patterns.
- Effective H. pylori eradication is crucial for patient outcomes, with a target rate of ≥ 80%.
Purpose of the Study:
- To review current therapeutic options for H. pylori infection.
- To highlight treatment choices based on regional antibiotic resistance data.
- To outline first-line, second-line, and rescue therapy recommendations.
Main Methods:
- Review of existing literature on H. pylori treatment regimens.
- Analysis of treatment efficacy based on antibiotic susceptibility.
- Comparison of different therapeutic approaches including triple, quadruple, sequential, and concomitant therapies.
Main Results:
- Triple therapy (proton-pump inhibitor, clarithromycin, amoxicillin/metronidazole) remains a primary option in low-resistance areas.
- Bismuth-containing quadruple therapy is preferred where clarithromycin resistance exceeds 20%.
- Sequential and concomitant therapies offer alternative first- and second-line treatment options, respectively. Levofloxacin-based regimens are effective for second-line treatment.
- Antimicrobial susceptibility testing is recommended for guiding rescue therapy after treatment failure.
Conclusions:
- Treatment selection for H. pylori infection should be guided by local antibiotic resistance prevalence.
- Multiple effective therapeutic regimens exist, including triple, quadruple, sequential, and concomitant therapies.
- Personalized treatment based on susceptibility testing is essential for refractory H. pylori infections.
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