Abstract
Humic acids extracted with sodium pyrophosphate from Oligotrophic Sphagnum magellanicum peat reduce mitogen-stimulated production of anti-inflammatory cytokine IL-10 by mouse peritoneal macrophages and do not affect the secretion of IL-4 by lymphocytes. The studied humic acid sample stimulates the production of proinflammatory cytokines IL-12, TNFα, IL-1β, and IFNγ by immunocompetent mouse cells and human mononuclear cells. Course administration of humic acids to mice enhances the humoral immunity, increasing the number of antibody-forming cells in the spleen and the titer of antibodies in the blood serum after immunization with sheep red blood cells.
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