[Myelopeptide-3 activates macrophage function].
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Biomedical subjects
Publications and source records attributed to V S Aprikian.
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The study investigated immunocorrecting properties of penicillin G, streptomycin, gentamycin in cyclophosphamide--induced immunodeficiency in mice. It was determined, that antibiotics in sub-bactericidal doses possess pronounced immunocorrecting properties. This effect was observed in both humoral and cell-mediated immune response.
Penicillin, streptomycin and gentamicin, when introduced into mice in a single injection in doses of 0.5-500,000 U/kg, produced different changes in the phagocytic activity of mouse peritoneal macrophages. Bactericidal doses of these antibiotics either suppressed the activity of macrophages or left it unchanged. Their sub-bactericidal doses enhanced the phagocytic activity of macrophages. Combined use of penicillin and streptomycin produced a synergic effect.
The protective properties of myelopeptides in the development of bacterial infection in mice and young pigs, caused by S. typhimurium 415, S. cholerae-suis 1422 and 370, have been studied. Myelopeptides have been found to possess protective properties when injected into animals infected with S. typhimurium and S. cholerae-suis in lethal doses. The best protective effect (survival rate of 100%) has been achieved by the injection of myelopeptides 24 hours before challenge. Myelopeptides have also been found to promote the weight gain of young pigs infected with S. cholerae-suis.