Abstract
Neural involvement plays a role in the genesis of the peripheral inflammatory process that contributes to the irradiation intestinal disorders. However, little is known about the role of vagus nerve in modulating inflammatory process in rat. Here, we have shown that the NF-κB activation was consistent with the acute overexpression of pro-inflammatory cytokines (IL- 1β, TNF-α, IL-6) at 3, 6, and 12 h induced by whole-body irradiation (8 Gy). Subdiaphragmatic vagotomy reduced NF-κB activation and cytokine transcription in the early period post-irradiation. In contrast, vagotomy amplified overexpression of irradiation-induced anti-cytokines (IL-10, IL-1Ra) and of receptors involved in anti-inflammatory effects (IL- 1RII, TNFRII). These results show that the vagus nerve is a pro-inflammatory pathway in early irradiation-induced intestinal inflammation.
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