Background And Aims: The decreasing Helicobacter pylori eradication rate and the increasing antibiotic resistance trend are of great concern. Therefore, new and effective therapies are needed for H. pylori infection. We conducted a systematic review and meta-analysis to assess the efficacy and safety of semisynthetic tetracycline regimens in H. pylori treatment.
Methods: PubMed, EMBASE, and the Cochrane library were searched. The outcome indicators were the eradication rate, risk ratio (RR, ie, the risk of the semisynthetic tetracycline regimen relative to the control), and 95% confidence interval (95% CI). Controls were patients undergoing any other treatment without semisynthetic tetracycline.
Results: Twenty-three studies with 5240 participants were included. The eradication rates of triple regimens with semisynthetic tetracyclines in most studies were less than 70% in both the intention-to-treat (ITT) and the per-protocol (PP) analyses. The pooled eradication rates of quadruple therapies with doxycycline and controls were 95% and 84% in the PP analyses, respectively. The pooled RR associated with efficacy in the quadruple therapy with doxycycline group compared with the control group was 1.12 (95% CI: 1.04-1.20) in the PP analysis. The pooled RR of side effects in the quadruple therapy with doxycycline group compared with the control group was 1.01 (95% CI: 0.65-1.55).
Conclusion: Seven-day and ten-day quadruple therapy with doxycycline might be an optional first-line therapy. The safety of regimens containing semisynthetic tetracyclines was relatively satisfactory. However, the triple regimen is not recommended.
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