Drug Repurposing to treat Asthma and Allergic Disorders: Progress and Prospects

Abstract

Allergy and atopic asthma have continued to become more prevalent in modern society despite the advent of new treatments, representing a major global health problem. Common medications such as antihistamines and steroids may have undesirable long-term side effects and lack efficacy in some resistant patients. Biologic medications are increasingly given to treat resistant patients, but they can represent high costs, complex dosing and management, and are not widely available around the world. The field needs new, cheap and convenient treatment options in order to bring better symptom relief to patients. Beyond continued research and development of new drugs, a focus on drug repurposing could alleviate this problem by repositioning effective and safe small molecule drugs from other fields of medicine and applying them toward the treatment of asthma and allergy. Herein, preclinical models, case reports, and clinical trials of drug repurposing efficacy in allergic disease are reviewed. Novel drugs are also proposed for repositioning based on their mechanism of action to treat asthma and allergy. Overall, drug repurposing could become increasingly important as a way of advancing allergy and atopic asthma treatment, filling a need in treatment for patients today.

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