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자료유형
학술저널
저자정보
Lee Jung Won (Department of Internal Medicine Seoul National University Bundang Hospital Seongnam KoreaDepartment) Kim Nayoung (Department of Internal Medicine Seoul National University Bundang Hospital Seongnam KoreaDepartment) Nam Ryoung Hee (Department of Internal Medicine Seoul National University Bundang Hospital Seongnam Korea) Yu Jeong Eun (Department of Internal Medicine Seoul National University Bundang Hospital Seongnam Korea) Son Joo Hee (Department of Internal Medicine Seoul National University Bundang Hospital Seongnam Korea) Lee Sun Min (Department of Internal Medicine Seoul National University Bundang Hospital Seongnam Korea) Lee Dong Ho (Department of Internal Medicine Seoul National University Bundang Hospital Seongnam KoreaDepartment)
저널정보
거트앤리버 발행위원회 Gut and Liver Gut and Liver 제15권 제1호
발행연도
2021.1
수록면
53 - 60 (8page)

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Background/Aims: Favorable outcomes of potassium-competitive acid blocker (PCAB)-containing eradication therapy have been reported. In fact, tegoprazan, a recently developed PCAB, was presumed to show good eradication efficacy even for resistant Helicobacter pylori. We aimed to investigate the anti-H. pylori efficacy of tegoprazan compared with that of vonoprazan. Methods: A total of 220 resistant clinical H. pylori isolates were utilized. The anti-H. pylori efficacy of PCABs was determined by evaluating the minimum inhibitory concentrations (MICs) of clarithromycin, fluoroquinolone, metronidazole, and amoxicillin in combination with vonoprazan or tegoprazan by the agar dilution method. The impact of the mutations responsible for resistance development, such as 23S rRNA, gyrA, rdxA, frxA, and pbp1 mutations, was also analyzed. Results: H. pylori growth was significantly inhibited in a medium containing 1 μg/mL clarithromycin with tegoprazan (128 μg/mL). The MICs of clarithromycin (46.3%), fluoroquinolone (46.7%), metronidazole (55.6%), and amoxicillin (34.5%) against resistant H. pylori isolates improved after tegoprazan administration. Tegoprazan demonstrated more frequent susceptibility acquisition with metronidazole than with vonoprazan (20.6% vs 4.7%, p=0.014). However, there were no significant differences depending on the mutational status of each antimicrobial agent. Conclusions: Tegoprazan administration may improve the susceptibility of antimicrobial-resistant H. pylori, independent of acid suppression.

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