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In order to evaluate antimicrobial susceptibility and detect specific mutations in the 23S rRNA gene in Helicobacter pylori strains, a cross-sectional study was performed on 95 patients with dyspepsia treated in a private clinic in Lima. Antrum biopsies were collected by endoscopy for isolation and evaluation of antimicrobial susceptibility using the broth microdilution method. The detection of specific mutations was developed by PCR-RFLP. The percentage of infection by Helicobacter pylori was 46.3%. Resistance values of 52.3% to clarithromycin, 29.6% to metronidazole, 45.5% to levofloxacin, and 4.6% to amoxicillin were observed. The percentage of specific A2142G and A2143G mutations associated with clarithromycin resistance was 43.5%. In conclusion, we found that antimicrobial resistance rates and the percentage of Helicobacter pylori strains circulating in a private clinic in Lima were high.

Susceptibilidad antimicrobiana y mutaciones en el gen ARNr 23s de Helicobacter pylori en pacientes dispépticos