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Bantia, S. et al.

Shanta Bantia, Debra Kellogg, Cynthia D. Parker, Y.S. Babu,

Combination of peramivir and rimantadine demonstrate synergistic antiviral effects in sub-lethal influenza A (H3N2) virus mouse model.

Efficacy of combination of the intramuscularly administered neuraminidase (NA) inhibitor, peramivir, and the orally administered M2 ion channel blocker, rimantadine was evaluated in mouse influenza A/Victoria/3/75 (H3N2) model. Mice were challenged with a sub-lethal virus dose (0-40% mortality in placebo group) and changes in body weights were analyzed by three-dimensional effect analysis to assess mode of drug interactions. Compounds were administered in a 5-day treatment course starting 1h before viral inoculation. The peramivir and rimantadine doses ranged from 0.3-3 mg/kg/d and 5-30 mg/kg/d, respectively. The maximum mean weight loss of 5.19 g was observed in the vehicle-infected group on day 10. In the 1 and 3 mg/kg/d peramivir monotherapy groups, the weight losses were 4.3 and 3.55 g, respectively. In the rimantadine monotherapy group, the weight losses were 3.43, 2.1, and 1.64 g for the 5, 10, and 30 mg/kg/d groups, respectively. Combination of 1mg/kg/d peramivir with 5 and 10 mg/kg/d rimantadine produced weight losses of 1.69 and 0.69 (p<0.05 vs. vehicle and individual agent), respectively, whereas the combination of 3.0 mg/kg/d peramivir with 10 and 30 mg/kg/d rimantadine did not show any weight loss (p<0.05 vs. vehicle and individual agent). The three-dimensional analysis of the weight loss for the majority of the drug combinations of peramivir and rimantadine tested demonstrated synergistic antiviral effects.[1]

References

Combination of peramivir and rimantadine demonstrate synergistic antiviral effects in sub-lethal influenza A (H3N2) virus mouse model. Bantia, S., Kellogg, D., Parker, C.D., Babu, Y.S. Antiviral Res. (2010) [Pubmed]

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