Proton-pump inhibitors are associated with an increased risk of microscopic colitis: a population-based study and review of the literature.
Abstract
BACKGROUND: Microscopic colitis is a relatively new diagnosis that was first described in the 1980s. Patients usually present with chronic watery and non-bloody diarrhea and are typically characterized by an unremarkable gross appearance of the colon on lower endoscopy while having evidence of lymphocytic infiltration of the lamina propria and the epithelium on histology. Two subtypes have been described in the literature: Collagenous colitis, with marked thickening of the subepithelial layer, and Lymphocytic colitis. Multiple risk factors such as female gender, older age and celiac disease have been associated with this entity. A few studies have found an association between microscopic colitis and proton-pump inhibitor (PPI). The aim of our study was to evaluate the risk of developing microscopic colitis and its subtypes for patients who are on PPI therapy.
METHODS: A validated multicenter and research platform database of more than 360 hospitals from 26 different healthcare systems across the United States from 1999 to September 2022 was utilized to construct this study. Patients aged 18 years and above were included. Individuals who have been diagnosed with any autoimmune disease have been excluded. A multivariate regression analysis was performed to assess risk of developing microscopic, lymphocytic, and collagenous colitis by accounting for potential confounders including female gender, smoking history, and the use of proton pump inhibitor, nonsteroidal…
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Evidence Hub reads this as a cohort study, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence.
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