Chloroquine Inhibits Influenza A Virus Replication
Author Information
Author(s): Ooi Eng Eong, Chew Janet Seok Wei, Loh Jin Phang, Chua Robert CS
Primary Institution: Defence Medical and Environmental Research Institute, DSO National Laboratories
Hypothesis
Can chloroquine inhibit the replication of human influenza A virus in vitro?
Conclusion
Chloroquine demonstrates an inhibitory effect against the replication of human influenza A virus H1N1 and H3N2 in vitro.
Supporting Evidence
- Chloroquine has lower IC50 and IC90 values against H1N1 and H3N2 than the plasma concentrations achieved during malaria treatment.
- Complete inhibition of viral replication was observed at 12.5 μM chloroquine.
- Chloroquine's immunomodulatory activity may benefit treatment for influenza A (H5N1) infection.
Takeaway
Chloroquine, a drug usually used for malaria, can help stop the flu virus from making more copies of itself in the lab.
Methodology
In vitro antiviral assay using serial dilutions of chloroquine on MDCK cells infected with influenza A viruses H1N1 and H3N2.
Limitations
Further studies are needed to test a wider range of clinical isolates and in vivo effects.
Digital Object Identifier (DOI)
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