[The activity of interferon-dependent 2',5'-oligoadenylatesynthetase in rat thymus lymphoid cells under the action of ethanol and acetic zinc administration].

The activity of interferon-induced 2',5'-oligoadenylatesynthetase (2',5'-OA-synthetase) in thymocytes of rats simultaneously treated with ethanol and acetic zinc preparation was studied. The 2',5'-OA-synthetase activity was decreased by 75% after daily ethanol administration for 14 days. The changes were less pronounced at the late terms of the experiment. In vitro stimulation of enzyme activity by inducer cycloferon was more pronounced at the late terms of ethanol action. Combined administration of ethanol and acetic zinc increased the 2',5'-OA-synthetase activity (by 81% at 21th day and by 30% at 28th day) in comparison to the group of animals that consumed ethanol only. The zinc preparation augmented the stimulation of enzyme activity induced by cycloferon, the effect was most prominent at the late terms of the ethanol action (at 28th day). Probably, ethanol depresses the synthesis of interferon or disturbs the functioning of 2',5'-oligoadenylate cascade. The acetic zinc amplifies the interferon synthesis.