Loose ends in the eradication of Helicobacter pylori infection

The Effect of Helicobacter pylori Infection on Overweight: A Systematic Review and Meta-Analysis

Background

The association between Helicobacter pylori infection and overweight, as one of the most common health issues, remains controversial. In this study, we systematically reviewed the effect of H. pylori infection and overweight to get a reliable answer.

Methods

We used the Preferred Reporting Items for the Systematic Review and Meta-Analysis statement. We searched the association between H. pylori and overweight infection in international databases including Medline, Web of knowledge and Scopus, without any limitations of language, publication type, and publication status in search step of this systematic review from 2000 to 2020. We surveyed the title, abstract and full text of each research studies, and we used Newcastle-Ottawa quality for assessing the quality of each paper. A random effects model was used to calculate the pooled odd ratio with 95% confidence intervals.

Results

Fifteen papers were eligible for this review. The selected studies reported different Odd Ratio between overweight and H. pylori infection but Odds Ratio (95% confidence interval) in our systematic and meta-analysis study was estimated at 1.42 (95% CI; 1.12, 1.81) and it was statistically significant (P: 0.003).

Conclusion

H. pylori infection is significantly associated with overweight, therefore, the eradication of H. pylori infection is suggested because this infectious might be resulted in overweight.

The efficacy of Helicobacter pylori eradication in diabetics and its effect on glycemic control: A systematic review and meta-analysis

BACKGROUND AND AIMS

Previous studies have revealed the association between Helicobacter pylori (H. pylori) and diabetes mellitus, but conflicts still exist. The present study tried to investigate the underlying link between these two diseases by making comprehensive analyses of the impact of diabetes on H. pylori eradication and the influence of H. pylori eradication on diabetes.

METHODS

We systematically searched relevant studies from PubMed, Cochrane Library, Web of Science, and Embase updated to April 23, 2020. Studies examining the association between H. pylori eradication and diabetes were included. Pooled odds ratio (OR) and weighted mean differences (WMD) were calculated for different results.

RESULTS

Among the 2125 retrieved studies, 36 studies were included. Patients with type 2 diabetes mellitus (T2DM) have higher risk of H. pylori eradication failure than the non-diabetic one (OR = 2.59, 95% CI 1.82-3.70). Body mass index (BMI) was identified as a major factor affecting the efficacy of H. pylori eradication in diabetics, and better glycemic control was also found in eradication succeed patients (WMD: 0.51, 95% CI 0.20-0.81). Moreover, after eradication of H. pylori, improvement of HbA1c was proved (WMD = -0.33, 95% CI -0.65 to -0.02) in T2DM.

CONCLUSION

A higher risk of H. pylori eradication failure in T2DM was confirmed, and it was associated with BMI and glycemic control. Moreover, we also provided evidence that H. pylori eradication could improve glycemic control in patients with T2DM, which indirectly reflect the interaction between H. pylori and the diabetes.