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Drug Treatment of Eosinophilic Oesophagitis

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Eosinophilic oesophagitis is a clinicopathological disease characterized by oesophageal eosinophilia and gastrointestinal symptoms. Currently, the optimal treatment regimens remain unclear. The pathogenesis of eosinophilic oesophagitis appears to involve immune dysregulation, while acid reflux may have a secondary role; the mainstays in treatment are aimed principally at these dual processes. While a trial of a PPI is worthwhile it is likely that PPI therapy is treating concurrent acid reflux rather than true eosinophilic oesophagitis. Dietary elimination with elemental feed is safe but poorly tolerated. Swallowed topical steroids are the mainstay of commercially available therapies. Both fluticasone and budesonide have been proven to be beneficial both symptomatically and in reducing oesophageal eosinophil counts in the short and medium term. Basic studies have determined a role for IL-5 in oesophageal remodelling in eosinophilic esophagitis. Initial clinical studies have shown single or multiple infusions of monoclonal antibody to IL-5 to be well tolerated and to cause a long-term decrease in both peripheral and sputum eosinophil count in these eosinophil driven conditions. At present, swallowed corticosteroids are the mainstay of treatment for patients with eosinophilic oesophagitis in patients failing PPI therapy. Studies have been heterogenous in their diagnostic criteria for eosinophilic oesophagitis and in the definition of response to therapy, making comparison of results difficult.
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Keywords: Eosinophilic oesophagitis; IL-5; budesonide; fluticasone

Document Type: Research Article

Publication date: November 1, 2012

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  • Current Drug Metabolism aims to cover all the latest and outstanding developments in drug metabolism and disposition. The journal serves as an international forum for the publication of timely reviews in drug metabolism. Current Drug Metabolism is an essential journal for academic, clinical, government and pharmaceutical scientists who wish to be kept informed and up-to-date with the latest and most important developments. The journal covers the following areas:

    In vitro systems including CYP-450; enzyme induction and inhibition; drug-drug interactions and enzyme kinetics; pharmacokinetics, toxicokinetics, species scaling and extrapolations; P-glycoprotein and transport carriers; target organ toxicity and interindividual variability; drug metabolism and disposition studies; extrahepatic metabolism; phase I and phase II metabolism; recent developments for the identification of drug metabolites and adducts.
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