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Effects of B4 Coxsackievirus infection on cell-mediated immunity, natural cytotoxicity and interleukin-1 production by spleen cells, in mice.

By using CBA inbred mice as responders, the influence of in vivo B4 Coxsackievirus infection (in two separate experimental procedures) on anti-virus cell-mediated immunity (CMI), natural killer (NK) cell activity and lipopolysaccharide (LPS) induced interleukin-1 (IL-1) production in spleen cells were studied. Both experimental infection schedules were able to induce a "positive" CMI response. NK cell activity was also significantly stimulated, especially by the administration of high virus amounts/inoculum, with frequent injections. On the contrary, LPS-dependent IL-1 synthesis increased particularly following application of the other experimental schedule (low virus amounts, few injections). Some aspects concerning CMI, NK and IL-1 relationships, during several enteroviral diseases, are discussed.