Abstract
Tumor necrosis factor-alpha (TNF-alpha) is a pathogenic factor in bacterial meningitis. The effect of thalidomide on TNF-alpha production by microglia, the resident macrophages of the brain, was evaluated. In primary human fetal microglial cell cultures stimulated with lipopolysaccharide or lipoarabinomannan, thalidomide inhibited TNF-alpha release in a dose-dependent manner. The inhibitory effect of thalidomide was similar to that of dexamethasone, although expression of TNF-alpha mRNA in microglial cells was reduced only by thalidomide. The results of this in vitro study suggest that thalidomide could have therapeutic potential in gram-negative bacterial and tuberculous meningitis.
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