Abstract
The action of reducing, oxidizing and thiol-alkylating agents on early steps of Junin virus (JV) multiplication in Vero cells was investigated. The presence of reducing agents during virus adsorption as well as incubation of viral particles with these compounds before infection enhanced JV infectivity. On the contrary, the thiol-alkylating agent 5,5' dithiobis (2-nitrobenzoic acid) and the oxidizing compound potassium periodate showed an inhibitory effect, suggesting that sulfhydryl groups, and certain sugar moieties of viral glycoproteins play an important role in the first steps of JV infection. Also enzymatic treatment of cell monolayers and addition of concanavalin A to cultures prior to infection suggest that cellular glycoproteins are involved in virus attachment.
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