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First-line Helicobacter pylori eradication rates are significantly lower in patients with than those without type 2 diabetes mellitus

Chih-Chien Yao,C. Kuo,Chien-Ning Hsu,Shih‐Cheng Yang,Cheng-Kun Wu,W. Tai,Chih‐Ming Liang,Keng-Liang Wu,Chih-Fang Huang,Kuo Bi,Chen-Hsiang Lee,S. Chuah

Published 2019 in Infection and Drug Resistance

ABSTRACT

Purpose: To assess the difference of the first-line therapy for Helicobacter pylori in patients with or without type 2 diabetes (DM) and to investigate the clinical factors influencing treatment outcomes. Patients and methods: In total, 719 patients with H. pylori infection were treated with 7-day standard first-line triple therapy, of whom 182 did and 537 did not have DM. Propensity score matched at a 1:2 ratio – for age, sex and body mass index was performed for the two groups, yielding a DM group with 147 patients and a non-DM group with 249 matched controls for analysis. Urea breath test was performed 6–8 weeks after treatment. Clinical and laboratory parameters were collected for identifying factors associated with failed eradication. Results: H. Pylori was eradicated in 74.1% (95% confidence interval [CI] =66.2–81.0) of the DM group and 85.3% (95% CI =80.8–89.4) of the non-DM group (p=0.005). Of 51 gastric biopsy samples cultured for H. pylori, 41 were positive. In the DM group, the rates of resistance to amoxicillin, clarithromycin, levofloxacin, and tetracycline were 0%, 50.0%, 50.0% and 0%, respectively. In the non-DM group, the comparable proportions were 2.9%, 17.1%, 22.9%, and 0%, respectively. Univariate analysis revealed that DM (Odds ratio [OR], 1.771, 95% CI, 1.167–2.668, p=0.006), clarithromycin resistance (OR, 15.273; 95% CI, 1.687–138.269; p=0.015), and amoxicillin resistance (OR, 4.672; 95% CI, 2.431–8.979; p<0.001) were independently associated with failure to eradicate H. pylori. Multivariate analysis showed that clarithromycin resistance was the major factor independently associated with failure of eradication (OR, 25.472; 95% CI, 1.549–418.956; p=0.023). Conclusions: First-line H. pylori eradication rates in patients with DM were significantly lower than in those without DM, although neither group achieved >90% eradication.

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