Treatment of oseltamivir-resistant influenza A (H1N1) virus infections in mice with antiviral agents
| Autor: | Donald F. Smee, E. Bart Tarbet, Justin G. Julander, Jack Nguyen, Matthew Gross |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Oseltamivir
Rimantadine viruses Gene mutation Pharmacology medicine.disease_cause Antiviral Agents Article Mice chemistry.chemical_compound Influenza A Virus H1N1 Subtype Zanamivir Orthomyxoviridae Infections Virology Drug Resistance Viral Amantadine medicine Influenza A virus Animals Mice Inbred BALB C biology business.industry virus diseases Survival Analysis Disease Models Animal Treatment Outcome chemistry biology.protein Female Peramivir business Neuraminidase medicine.drug |
| Zdroj: | Antiviral Research. 96:13-20 |
| ISSN: | 0166-3542 |
| DOI: | 10.1016/j.antiviral.2012.07.002 |
| Popis: | Influenza A/Mississippi/03/2001 (H1N1) and A/Hong Kong/2369/2009 (H1N1) viruses containing the neuraminidase gene mutation H275Y (conferring resistance to oseltamivir) were adapted to mice and evaluated for suitability as models for lethal infection and antiviral treatment. The viral neuraminidases were resistant to peramivir and oseltamivir carboxylate but sensitive to zanamivir. Similar pattern of antiviral activity were seen in MDCK cell assays. Lethal infections were achieved in mice with the two viruses. Oral oseltamivir at 100 and 300 mg/kg/day bid for 5 d starting at −2 h gave 30 and 60% protection from death, respectively, due to the A/Mississippi/03/2001 infection. Intraperitoneal treatments with zanamivir at 30 and 100 mg/kg/day starting at −2 h gave 60 and 90% protection, respectively. Neither compound at ≤300 mg/kg/day protected mice when treatments began at +24 h. Amantadine was effective at 10, 30, and 100 mg/kg/day, rimantadine was protective at 10 and 30 mg/kg/day (highest dose tested), and ribavirin was active at 30 and 75 mg/kg/day, with survival ranging from 60–100% for oral treatments initiated at −2 h. For treatments begun at +24 h, amantadine was protective at 30 and 100 mg/kg/day, rimantadine showed efficacy at 10 and 30 mg/kg/day, and ribavirin was active at 75 mg/kg/day, with 60–100% survival per group. In the A/Hong Kong/2369/2009 infection, oral oseltamivir at 100 and 300 mg/kg/day starting at −2 h gave 50 and 70% protection from death, respectively. These infection models will be useful to study newly discovered anti-influenza virus agents and to evaluate compounds in combination. |
| Databáze: | OpenAIRE |
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