Current value of quinolones in Helicobacter pylori therapy
Abstract
Eradication rates in first-line Helicobacter pylori therapy have been declining over the last decades, mainly due to increasing resistance against the recommended antibiotics clarithromycin and metronidazole. Thus, there is a need to evaluate novel regimens and substances to offer effective alternative treatment strategies. New generation quinolones, like levofloxacin and moxifloxacin, exhibit a broad-spectrum activity against various Gram-positive and Gram-negative strains and are mostly well tolerated. Based on a large number of studies, quinolones have been introduced in second-line and rescue treatment and are recommended for these indications in current guidelines. Various studies have investigated alternative strategies for first-line treatment including quinolone-based regimens. In the context of increasing resistance rates of Helicobacter pylori against quinolones some risks and benefits have to be considered when using quinolones as a first-line strategy. Besides numerous studies investigating levofloxacin and moxifloxacin there are some promising results for the new substance sitafloxacin, which might overcome primary resistance of Helicobacter pylori against conventional quinolones.
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