Influence of immunomodulators on non-specific resistance and production of nitric oxide (II) in the organism of calves

The article presents data on the dynamics of bactericidal activity of blood serum against St. aureus and E. coli, and the lysozyme activity of calf blood serum against Micrococcus lisodeicticus, as well as nitrate and nitrite anions when immunomodulators are administered. It has been established that administration of «Fosprenil» increases bactericidal and lysozyme activity of blood serum, whereas, Imunophane increases nonspecific resistance without affecting lysozyme activity. Nitric oxide (II) has been shown to be directly involved in the mechanism of non-specific immunity. At the same time, the stimulation of serum lysozyme activity requires nitric oxide (II) formation in high concentrations (above 50 |imol/l).