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Potential Use of Proton Pump Inhibitors as Antivirals

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Here, we report that prazoles, approved for use as PPIs, also exhibit potential for antiviral therapy. For this application, the prodrug required conversion inside cells. HIV-1, MAYV, EBOV and EBV replication were tenatoprazole sensitive while DENV, ZIKV and PV replication were resistant. Further testing employing HIV-1 as a model revealed its susceptibility to additional prazoles with inhibition generally correlating to the rate of pro-drug conversion to the active sulfenamide derivative.

 

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Acute exacerbations of chronic obstructive pulmonary disease (COPD), an acute worsening of respiratory symptoms, generally result in a poor prognosis. Successful prevention and management of such exacerbations is thus important for patient care. Viral infection, primarily with rhinovirus (RV), is the foremost cause of exacerbations in COPD patients. Proton pump inhibitors (PPIs) have been reported to inhibit RV infection in human airway epithelial cells in vitro. Furthermore, clinical trials of PPIs in patients with COPD resulted in a reduction in rates of both common cold and COPD exacerbations. In this review, we discuss the significance of COPD exacerbations, summarize a published trial of the effect of low-dose PPIs on COPD exacerbations, and postulate a mechanism for this effect.

 

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