ArticlebioRxiv : the preprint server for biology2025
Inhibition of acute lung inflammation by a neuroimmune circuit induced by vagal nerve stimulation.
Article in bioRxiv : the preprint server for biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Vagus nerve stimulation (VNS) has been shown to limit immune cell activity across several pathologies ranging from sepsis to auto-immune diseases. While stimulation of vagal efferent neurons has been previously demonstrated to reduce maladaptive host responses during endotoxemia, only selective stimulation of vagal afferent neurons was able to inhibit TLR7-induced macrophage activation and neutrophil recruitment in the lung. These anti-inflammatory actions are facilitated by systemic increases in epinephrine, as VNS significantly increased epinephrine in the serum and bronchoalveolar lavage fluid, and inhibition of epinephrine production eliminated the protection afforded by VNS. Selective afferent VNS induced activation in the nucleus tractus solitarius and the rostral ventrolateral medulla. Inhibition of neuronal activity in this brain region that controls peripheral sympathetic nervous system activity rendered VNS ineffective. Activation of the β
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