Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Phaeophyta Extracts Exhibit Antiviral Activity against Feline Calicivirus

  • Choi, Yuri (Department of Microbiology, Pukyong National University) ;
  • Kim, Eunjung (LG Electronics) ;
  • Moon, Sunyoung (Department of Food Science & Technology, Pukyong National University) ;
  • Choi, Jong-Duck (Department of Seafood Science and Technology, Gyeongsang National University) ;
  • Lee, Myung-Suk (Department of Microbiology, Pukyong National University) ;
  • Kim, Young-Mog (Department of Food Science & Technology, Pukyong National University)
  • Received : 2013.06.14
  • Accepted : 2013.07.23
  • Published : 2014.03.31
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Abstract

The objective of this study was to evaluate the antiviral activity of Phaeophyta extracts against feline calicivirus (FCV), used as a norovirus surrogate. A bioassay-guided cytotoxicity and virus infectivity assay revealed that methanolic extracts of Phaeophyta possessed significant antiviral activity against FCV. Among them, Eisenia bicyclis extract exhibited the highest antiviral activity against FCV. The 50% effective concentration of the extract ($EC_{50}$) inhibiting FCV viral replication by 50% was $80{\mu}g/mL$. The extract also showed the highest selectivity index, calculated from the ratio of the median cellular cytotoxicity concentration ($CC_{50}$) and $EC_{50}$, indicating antiviral efficacy against FCV. In addition, significant interruption of FCV infection was observed by pretreatment of host Crandall-Reese feline kidney cells with the E. bicyclis extract ($200{\mu}g/mL$) prior to virus infection, in a dosedependent manner.

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References

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