[Production of interleukin-1 and interleukin-6 in a culture of mononuclear cells of peripheral blood and bone marrow in multiple myeloma].

Constitutive and lipopolysaccharide (LPS)--induced production of interleukin (IL)-1 and IL-6 have been investigated in peripheral blood (PB) and bone marrow (BM) of patients with multiple myeloma (MM) and PB of health donors. The level of these cytokines has been higher in MM in comparison with norm. Monocytes of PB of patients with MM have been more stimulated by LPS than those of health people. When adherent and nonadherent cells have been cultured apart, there not have not been any differences in constitutive IL-6 production between compared groups. The important role of cell-cell interactions in regulation of IL-6 production is proposed. High level of IL-6 in BM of patients with MM is conditioned by mutual stimulation of adherent and nonadherent cells.