Related Experiment Video
Updated: Jul 23, 2025
Assessing the Putative Anticryptococcal Properties of Crude and Clarified Extracts from Mollusks
Published on: December 2, 2022
Anti-Influenza Activity of Cetraria islandica Lichen Extracts in In Vitro Experiments
E V Makarevich1, E I Filippova2, N V Sedel'nikova3
1State Research Center of Virology and Biotechnology "VECTOR", Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing, Koltsovo, Novosibirsk region, Russia. makarevich_ev@vector.nsc.ru.
Abstract:
The toxicity and antiviral activity of extracts obtained by the methods of aqueous and ethanol extraction of bioactive substances from Cetraria islandica lichen as a raw material were studied. Aqueous and ethanol extracts of lichen were characterized by low toxicity with respect to the passaged MDCK cell culture and exhibited antiviral activity. The ethanol extract showed more potent in vitro antiviral activity against human A/H3N2 and avian A/H5N1 influenza viruses: in a concentration of 50 μg/ml, it suppressed replication of these viruses by 3.5 and 4 log10, respectively, while the aqueous extract inhibited replication of viruses by 2 and 6 log10, respectively, when taken in a concentration of 500 μg/ml that was 10-fold higher than the concentration of the ethanol extract.
