Background: Feline calicivirus (FCV) is a common pathogen causing widely prevalent upper respiratory disease for kitten and felines in recent years. Due to the substantial genetic variability of the viral genes, existing vaccines cannot provide complete protection. Therefore, researches on FCV antiviral drugs have received much attention. Results: In this study, we found that copper chloride had dose-dependent antiviral effects against FCV in F81 cells. We also found that the combination of copper chloride and ribavirin had a synergistic effect against FCV in the F81 cells. In contrast, the combination of and horse anti-FCV immunoglobulin F(ab’)2 showed an antagonistic effect, likely because the copper chloride has an effect on the F(ab’)2 immunoglobulin; however, further research is needed to clarify this supposition.Conclusions: In summary, we found that copper chloride had low cytotoxicity and significant antiviral effects against FCV in F81 cells, providing a new drug candidate for the prevention and treatment of FCV infection.
Background: Feline calicivirus (FCV) is a common and highly prevalent pathogen causing upper respiratory diseases in kittens and felines in recent years. Due to the substantial genetic variability of the viral genes, existing vaccines cannot provide complete protection. Therefore, research on FCV antiviral drugs has received much attention.Results: In this study, we found that copper chloride had dose-dependent antiviral effects on FCV in F81 cells. We also found that the combination of copper chloride and ribavirin had a synergistic protective effect against FCV in F81 cells. In contrast, the combination of copper chloride and horse anti-FCV immunoglobulin F(ab')2 showed an antagonistic effect, likely because copper chloride has an effect on F(ab')2 immunoglobulin; however, further research is needed to clarify this supposition.Conclusions: In summary, we found that copper chloride had low cytotoxicity and significant antiviral effects on FCV in F81 cells, providing a new drug candidate for the prevention and treatment of FCV infection.
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