Purpose: (HP), which colonizes exclusively in the gastrointestinal tract, has been reported to dysregulate the immune response and gives rise to several extra-gastrointestinal autoimmune disorders. However, the relationship between HP and immune-mediated ocular diseases remains ambiguous. This study aims to clarify the association between immune-mediated ocular diseases and HP infection, as well as the impact of HP treatment on the incidence of immune-mediated ocular diseases.
Methods: This is a retrospective population-based study using National Health Insurance Research Database in Taiwan. Patients with newly diagnosed peptic ulcer disease or HP infection between 2009 and 2015 were identified as HP group and compared to the non-HP group with one-to-one exact matching. Moreover, the incident risk of immune-mediated ocular diseases and its two subgroups (ocular surface and orbital inflammation group, intraocular inflammation group) were compared in HP patients with or without treatment.
Results: A total of 1,030,119 subjects in the non-HP group and 1,030,119 patients in the HP group were enrolled. The incidence rate of immune-mediated ocular diseases was significantly higher in the HP group (95% confidence interval (CI): 2.534-2.547). The incident rate ratio was significantly higher in HP with treatment than without treatment (HR: 1.654, 95% CI: 1.641-1.668). The Cox proportional hazards regression model demonstrated a significantly increased HR of immune-mediated ocular diseases in HP treated group (HR: 2.265, 95% CI: 2.024-2.534) and less increased HR in HP non-treated group (HR: 1.427, 95% CI: 1.273-1.598) when comparing to non-HP group. Subgroup analysis demonstrated a significantly higher incidence rate of ocular surface and orbital inflammation as well as intraocular inflammation in the HP group.
Conclusion: This study illustrated a higher incidence of immune-mediated ocular diseases in HP infection, and a heightened risk following HP eradication.
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