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[Antiviral activity of human recombinant gamma-interferon and recombinant hybrid protein of tumor necrosis factor-alpha-thymosin-alpha1 on models of herpes-virus and cytomegalovirus infection in vitro].

The conducted studies showed a certain efficiency of gene-engineering preparation of IFN-gamma and TNF-T in virus infections caused by herpes simplex virus 2 (HSV-2) and cytomegalovirus (CMV) in cell cultures of human embryo fibroblast (HEF). The drugs have no viricidal action. IFN-gamma, when used according to the treatment scheme in vitro, proved to be more effective versus TMF-T both in HSV-2 and in CMV. It inhibited significantly the HSV-2 reproduction within the dilution range of 1:50 to 1:500. It was also effective, when used in CMV, within the dilution range of 1:5000 and lower, whereas TNF-T was effective within the range of 1:500 and lower as well as in 0.1 multiple infection. A significantly higher effect was ensured when the drugs were used for prevention. In HSV-2, IFN-gamma inhibited the virus reproduction, like in the treatment scheme, within the dilution range of 1:50 to 1:500, whereas TNF-T was effective in the range of 1:50. In CMV, the drugs' effect, when used for prevention, was similar to that observed in the treatment scheme. The highest inhibition values were registered for HSV-2, when it was used 24 hours before infection (IFN-gamma--2.25 Ig, dilution range of 1:50; TNF-2--1.0 Ig, dilution range of 1:50). IFN-gamma and TNF-2 exert a synergic action on different stages of virus reproduction. A reliable additive effect was ensured in prevention made 4 hour before infection by IFN-gamma and TNF-T only in experimental CMV infection.