Inhibition of inflammatory cytokine production by stimulation of brain muscarinic receptors
Methods for inhibiting pro-inflammatory cytokine release or inflammation in a vertebrate are provided. The methods comprise activating a brain muscarinic receptor of the vertebrate, or directly stimulating a vagus nerve pathway in the brain of the vertebrate. Also provided are methods for conditioning a vertebrate to inhibit the release of a pro-inflammatory cytokine or reduce inflammation in the vertebrate upon experiencing a sensory stimulus. The methods comprise (a) activating a muscarinic brain receptor or directly stimulating the vagus nerve pathway in the brain of the vertebrate and providing the sensory stimulus to the vertebrate within a time period sufficient to create an association between the stimulus and the activation of the brain muscarinic receptor; and (b) repeating step (a) at sufficient time intervals and duration to reinforce the association sufficiently for the inflammation to be reduced by the sensory stimulus alone.
1 . A method of inhibiting release of a pro-inflammatory cytokine in a vertebrate at risk for or having a condition mediated by an inflammatory cytokine cascade, the method comprising directly stimulating a vagus nerve pathway in the brain of the vertebrate.
2 . The method of claim 2 , wherein the vagus nerve pathway is stimulated electrically.
3 . A method of treating an inflammatory disease in a vertebrate, the method comprising directly stimulating a vagus nerve pathway in the brain of the vertebrate in an amount sufficient to inhibit release of a pro-inflammatory cytokine in the vertebrate.
4 . The method of claim 3 , wherein the vagus nerve pathway is stimulated electrically.