Incidence of Helicobacter pylori infection in 108 youngsters and drug resistance of the isolated strains / 解放军医学杂志

ABSTRACT

Objective To investigate the incidence of Helicobacter pylori in teenagers and analyze the drug resistance of isolated H.pylori strains.Methods Gastric mucosa samples were harvested from 108 young patients by gastroscopic biopsy.The Kirby-Baner test was performed to test the drug susceptibility of isolated H.pylori strains.Results Thirty-six strains of H.pylori were isolated from the gastric mucosa of 108 patients(33.3%).Seven of the 36 H.pylori strains were originated from the patients aged 6-10 years,the isolation rate in this age group was 16.7%;4 strains were isolated from the patients aged 10-14 years,the isolation rate in this age group was 31.3%;26 strains were from the age group of 14-18 years with the isolation rate of 48.1%.The isolation rates of H.pylori were significantly different among the there age groups(P0.05).The drug susceptibility test indicated that the drug-resistant rate of the 36 H.pylori strains to clarithromycin,amoxicillin,gentamicin,fruranzolidone,metronidazole and levofloxacin was 8.3%(3/36),33.3%(12/36),0%(0/36),16.7%(6/36),94.4%(34/36) and 0%(0/36),respectively.Conclusions The frequency of H.pylori infection may incidence with the increase in age.For the isolated H.pylori strains in present study,the drug-resistance to metronidazole and amoxicillin is higher,to clarithromycin and fruranzolidone is lower,and no drug-resistance is found to gentamicin and levofloxacin.