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  • Title: The effect of purine and pyrimidine analogues and virazole on adenovirus replication.
    Author: Scheffler P, Haghchenas D, Wigand R.
    Journal: Acta Virol; 1975 Apr; 19(2):106-15. PubMed ID: 239555.
    Abstract:
    The multiplication of adenovirus 19 in HeLa cells was inhibited by various purine and pyrimidine analogues and by virazole. The formation of infectious virus and of capsid proteins (haemagglutin, group-specific complement-fixing antigen) was inhibited to the same degree, while the viral cytopathic effect (CPE) was not inhibited. The reversibility of the inhibition after removal of the substances was more complete for purine than for pyrimidine analogues. The inhibition was counteracted by simulataneous addition of the corresponding nucleosides. Adenosine was more effected than guanosine against purine analogues; both were partially effective against virazole, but none of them against arabinofuranosyladenine. The time-dependence of inhibition, the ensuing eclipse period after removal of the inhibitors, and the successive application of two inhibitors led to the conclusion that most of them affect the viral multiplication mainly by inhibition of DNA synthesis. Azacytidine inhibits the synthesis of structural proteins as well.
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