Fig. 1.
Effect of tegoprazan and vonoprazan on the antibiotic susceptibility of Helicobacter pylori. (A) Effect of improving susceptibility acquired by the addition of tegoprazan. Clarithromycin (46.3%), fluoroquinolone (46.7%), metronidazole (55.6%), and amoxicillin (34.5%) increased the minimum inhibitory concentration (MIC) by more than 1-fold relative to that of tegoprazan. The highest overall improvement rate in the MIC was 55.6%, and the acquired susceptibility rate of metronidazole was 20.6%. (B) Effect of improving susceptibility acquired by the addition of vonoprazan. Clarithromycin (42.6%), fluoroquinolone (33.3%), metronidazole (52.4%), and amoxicillin (31.0%) improved the MIC. Clarithromycin (5.6%), fluoroquinolone (6.7%), and metronidazole (4.7%) acquired susceptibility.