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- Title
Effect of Helicobacter pylori eradication on platelet count in idiopathic thrombocytopenic purpura: a systematic review and meta-analysis.
- Authors
Massimo Franchini; Mario Cruciani; Carlo Mengoli; Giovanni Pizzolo; Dino Veneri
- Abstract
Background There is a debate in the recent literature about the effect of Helicobacter pylori eradication on platelet count in patients with idiopathic thrombocytopenic purpura (ITP). In order to clarify this controversial issue, we performed a systematic review with meta-analysis of the available literature. Methods The meta-analytic comparison was focused on the difference in the platelet count increase between the experimental arm (H. pylori-infected patients who responded to eradication therapy) and each control arm (H. pylori-infected patients who failed to respond to eradication therapy; H. pylori-infected patients who did not receive eradication therapy and H. pylori-negative patients) and was expressed as weighted mean difference (WMD). Moreover, in order to explain the heterogeneity, a meta-regression model was fitted with arm-level covariates. Results Data involving 788 ITP patients were collected from 17 articles (16 studies with a prospective cohort design and 1 randomized trial). There was a statistically significant difference in the increase in platelet count in patients in whom eradication was successful compared with control groups [WMD, 40.77 × 109/L (95% CI, 20.92–60.63) compared with untreated patients; 52.16 (95% CI, 34.26–70.05) compared with patients who failed eradication and 46.35 (95% CI, 27.79–64.91) compared with H. pylori-negative patients]. Moreover, in the meta-regression model, the success of H. pylori eradication was highly significant as an explanatory variable for platelet count increase. Conclusions Our analysis shows a strict correlation between H. pylori eradication and increase in platelet count. However, due to intrinsic limits in the design of the studies analysed, further evidence from randomized clinical trials is required to confirm the effect of eradication treatment on platelet count.
- Subjects
HELICOBACTER pylori; BLOOD platelet disorders; THROMBOCYTOPENIA; META-analysis
- Publication
Journal of Antimicrobial Chemotherapy (JAC), 2007, Vol 60, Issue 2, p237
- ISSN
0305-7453
- Publication type
Article
- DOI
10.1093/jac/dkm195