Regulation of human monocyte HLA-DR and CD4 antigen expression, and antigen presentation by 1,25-dihydroxyvitamin D3.

Abstract excerpt

1,25-Dihydroxyvitamin D3 (1,25(OH)2-D) has been shown to be a macrophage-derived cytokine, capable of regulating myeloid differentiation and T-cell activation in vitro. Therefore, we examined the effects of 1,25(OH)2-D on the monocyte phenotype and function of human peripheral blood monocytes as an index of its biologic role at an inflammatory site. 1,25(OH)2-D treatment consistently and specifically reduced...

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