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The regulation of the C/EBP family in macrophages by LPS and cytokines is of potentially crucial importance in several pathophysiological conditions. The action of LPS and three cytokines on the expression of C/EBP mRNA, protein and functional DNA binding activity in the murine J774.2 cell line was therefore studied. Exposure of the cells to LPS, IL-1, IFN-γ and TNF-α produced a reduction of C/EBPα...
The regulation of macrophage activator protein-1 (AP-1) gene expression by LPS and cytokines is of potentially crucial importance in the pathogenesis of several diseases. The action of LPS and four cytokines on AP-1 gene expression in the murine macrophage J774.2 cell line was, therefore, studied. Exposure of the cells to IL-6 produced no changes in the mRNA levels of all AP-1 members studied. In...
The regulation of macrophage lipoprotein lipase (LPL) by cytokines and lipopolysaccharide (LPS) is of potentially crucial importance in the pathogenesis of atherosclerosis and in the responses to endotoxin challenge. We show here that the reduction of LPL activity in J774.2 macrophages observed in the presence of interleukin (IL-1) and IL-11 was sensitive to herbimycin A, with the effect of LPS, interferon-γ...
The regulation of macrophage lipoprotein lipase (LPL) by cytokines is potentially of crucial importance in the pathogenesis of atherosclerosis and in septic shock. The effect of combinations of lipopolysaccharide (LPS) and cytokines on the expression of LPL in macrophages was studied using the murine J774.2 cell line. The suppression of heparin-releasable LPL activity produced by combinations of LPS...
The regulation of macrophage lipoprotein lipase (LPL) by cytokines is of potentially crucial importance in the pathogenesis of atherosclerosis and in the responses to endotoxin challenge. However, the precise mechanisms by which different cytokines modulate the expression of macrophage LPL activity are poorly understood. The action of six cytokines and bacterial lipopolysaccharide (LPS) on LPL function...
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