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  • Title: [Enzyme activity in cell cultures infected with herpesvirus suis].
    Author: Tatarov G, Vesselinova A.
    Journal: Arch Exp Veterinarmed; 1975; 29(4):483-9. PubMed ID: 172044.
    Abstract:
    The activity of succinate dehydrogenase (SDH) and lactage dehydrogenase (LDH) was studied in chick-embryo fibroblast cultures after inoculation of the virulent strain "A2" and the avirulent strain "MK" of herpesvirus suum. Strain "A2" reduced SDH activity, and so did strain MK, but here the decrease of enzyme activity was slower, and it did not become evident until the 24th hour. LDH activity fluctuated after "A2" infection but was generally increased, while there was no change in LDH activity, compared with uninfected control cells, after "MK" infection. When interaction of cell and virus took place in the presence of 5-iodo-2-desoxyuridine (IUDR), strain "A2" produced little change in the enzymes, but "MK" infection was accompanied by a definite fall in SDH and a slight increase in LDH. The presence of IUDR inhibited the proliferation of the virulent strain but had no apparent effect on proliferation of the attenuated strain "MK". Investigation of the enzyme activity of cells infected with Aujeszky's disease virus has revealed new biological properties of the virus, which might serve to distinguish between different strains of the virus.
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