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Inhaled Nitric Oxide Therapy Fails to Improve Outcome in Experimental Severe Influenza

Ivyspring International Publisher

In vitro, nitric oxide (NO) has been shown to have antimicrobial activity against a wide range of viruses, including influenza A virus. Therefore, we hypothesized that inhaled nitric oxide (iNO) would increase survival in vivo by reducing the viral load in C57Bl/6 mice infected with a lethal dose of influenza A/WSN/33 (H1N1; WSN/33) virus. NO was delivered to influenza-infected mice either continuously or intermittently at 80 or 160 ppm, respectively, using both prophylactic and post-infection treatment strategies. Murine survival and weight loss were assessed, and lung viral load was quantified via plaque assay. Here, we report that iNO administered prophylactically or post-influenza infection failed to improve survival of infected mice. No difference in lung viral load was observed between experimental groups. Although NO has antiviral activity against influenza A virus in vitro, iNO therapy provided no apparent benefit when used for treatment of influenza A virus infection in vivo.

Article

eng

Vancouver : University of British Columbia Library

10.14288/1.0398279

Medicine, Faculty of; Non UBC; Medicine, Department of; Respiratory Medicine, Division of

10.7150/ijms.3880

Faculty; Graduate

http://creativecommons.org/licenses/by-nc-nd/4.0/