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JOURNAL ARTICLE
REVIEW
Acid suppressing therapy as a risk factor for Candida esophagitis.
Studies were reviewed from PubMed for risk factors for the development, recurrence, prevention and therapy of Candida esophagitis, and for mechanisms induced by acid-suppressing therapy potentially influencing these factors. Documented observations included greatly increased Candida populations in the mouth, esophagus, stomach, and upper small intestine induced by acid-suppressing therapy. Among patients without HIV disease, PPI consumers more frequently had developed Candida esophagitis than did non-consumers and had also developed its recurrences more frequently. Similar phenomena associated with H2 -blocker use were less intense, and the possibility of similar phenomena in patients with HIV disease apparently had not yet been examined in spite of their high frequency of this disorder. PPI-induced elimination of the gastric acid barrier is a major mechanism leading to oro-pharyngeal and esophageal candida colonization, while PPI-induced impairment of absorption of most orally administered antifungal agents may limit the prophylactic and therapeutic success of these agents. These observations suggest potential value in limiting PPI use in populations of patients with Candida infections including esophagitis, as well as in patients at risk for their development, and also suggest that post-PPI rebound acid hypersecretion may provide additional anti-Candida benefit. Studies designed to develop the risk-benefit ratios of PPI use in these patients deserve investigation with high priority appropriate for studies in patients with HIV disease.
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