Molecular and Genetic Bases of Inhibition of Tick-Borne Encephalitis Virus Replication by Eprosartan and Ribavirin.

The antiviral activity of eprosartan (compound selected in silico) towards highly and low-virulent strains of tick-borne encephalitis virus was compared in vitro with activity of ribavirin. Study of the cytopathogenic activity of the virus on SPEV cells by ELISA, IFAT, and PCR showed similar results: both substances (eprosartan and ribavirin) promoted elimination of tick-borne encephalitis virus. Ribavirin exhibited intracellular inhibition towards both strains: the selectivity index for highly virulent Dal'negorsk strain was 160, for low-virulent Primorye-437 strain - 113.

Inhibitory Activity of Scutellaria baicalensis Flavonoids against Tick-Borne Encephalitis Virus.

We studied virus-inhibiting activity of Baikal skullcap (Scutellaria baicalensis) flavonoids against tick-borne encephalitis virus using various model schemes. The half-maximum cytotoxic concentration (CC) for the plant extract was found (363.9±58.

Evaluation of vaccine Encepur Adult for induction of human neutralizing antibodies against recent Far Eastern subtype strains of tick-borne encephalitis virus.

We studied humoral immune response of 44 volunteers from Primorsky krai (Russia) immunized with the vaccine Encepur Adult. Induction of the humoral response towards the recently isolated tick-borne encephalitis virus (TBEV) strains P-69, P-202, and P-73 was evaluated by neutralization test and enzyme immunoassay. These strains belong to Far Eastern TBEV subtype based on their genotype and antigenic structure but maintain significant genetic and antigenic variability.