Background: Host factors related to failure of eradication of Helicobacter pylori (H. pylori) are increasingly studied. This work aimed to study the influence of 25-hydroxy-vitamin D [25(OH)-vitD] status on the rate of H. pylori eradication.
Methods: One hundred and fifty patients infected with H. pylori were tested for serum 25(OH)-vitD level prior to 14 days clarithromycin-based triple eradication therapy. Accordingly, patients were divided into: group I (eradication successful) and group II (eradication failure). Both groups were compared regarding mean level of serum 25(OH)-vitD and number and percentage of patients with deficient 25 (OH)-vitD.
Results: Overall rate of eradication was 72%. Mean serum level of 25(OH)-vitD was higher in the eradication successful group compared to the group of eradication failure (28.12 ± 8.10 vs. 13.54 ± 6.37; p < 0.001). The percentage of patients with 25(OH)-vitD deficiency was higher in the group of eradication failure compared to the group of successful eradication [30 (71.5%) vs. 19 (17.5%); p < 0.001]. Patients with sufficient 25(OH)-vitD had a higher rate of eradication compared to patients with deficient 25(OH)-vitD (88% vs. 38.5%).
Conclusions: This study suggested that deficiency of 25(OH)-vitD could be a risk factor for H. pylori eradication failure, and it recommends to investigate the effect of vitamin D supplementation on H. pylori eradication.