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자료유형
학술저널
저자정보
김지현 (인제대학교)
저널정보
대한상부위장관 헬리코박터학회 Korean Journal of Helicobacter Upper Gastrointestinal Research Korean Journal of Helicobacter Upper Gastrointestinal Research Vol.15 No.2
발행연도
2015.1
수록면
89 - 94 (6page)

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The eradication rate of Helicobacter pylori has been decreasing progressively, primarily due to increased resistance to antibiotics. The widely used standard clarithromycin-based triple therapy regimen is no longer achieving eradication rate of 80% in intent-to-treat analysis in many countries. Due to the primary and secondary resistance to metronidazole, the key antibiotic for second line regimen, eradication rate of standard metronidazole based quadruple therapy is also decreasing. It is rational to check antibiotic resistance for selecting regimens in third-line rescue eradication therapy, but it requires time and resource. Limited studies regarding the efficacy of a dual regimen consisting of high dose proton pump inhibitor and amoxicillin showed controversial results. Efficacy of rescue regimens containing fluoroquinolones, such as levofloxacin and moxifloxacin, were reported to be insufficient due to increasing incidence of primary and secondary resistance. Eradication result of third-line rescue regimens with sitafloxacin, a novel quinolone of which the antibacterial activity towards H. pylori is more than 100-fold that of ciprofloxacin in vitro, is promising. Although prevalence of serious side effect such as myelotoxicity with rifabutin-based rescue regimen is reported to be lower than expected, wider use of rifabutin is still concerned regarding the emergence of resistant mycobacterial species. Rifaximin based rescue regimen is safer and cheaper than rifabuitin based regimen. However, further investigation for better eradication rates by enhancing higher drug concentration in the gastric mucus layer needs to be evaluated.

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