Abstract
The proinflammatory cytokines TNF-α, IL-1β, and IL-6 rise during neuronal damage and activate the apoptotic mitogen-activated protein kinase p38. We studied apoptosis, the levels of TNF-α, IL-1β, and IL-6, and the cell type producing TNF-α in rats at 8, 10, and 14 days of age after neonatal exposure to glutamate, which induces neuronal damage. TNF-α production was significantly increased by glutamate, but inhibited by SB203580 (a p38 inhibitor). TNF-α, IL-1β, and IL-6 mRNA levels increased, but SB203580 did not modify their expression. Thus, the p38 signaling pathway influences the expression of inflammatory genes and its inhibition may offer anti-inflammatory therapy.
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