A role for neurokinin 1 receptor expressing neurons in the paratrigeminal nucleus in bradykinin-evoked cough in guinea-pigs
Alexandria K Driessen, Alice E McGovern, Robert Behrens, Aung Aung Kywe Moe, Michael J Farrell, Stuart B Mazzone
The Journal of Physiology | WILEY | Published : 2020
KEY POINTS: Airway projecting sensory neurons arising from the jugular vagal ganglia terminate centrally in the brainstem paratrigeminal nucleus, synapsing upon neurons expressing the neurokinin 1 receptor. This study aimed to assess the involvement of paratrigeminal neurokinin 1 receptor neurons in the regulation of cough, breathing and airway defensive responses. Lesioning neurokinin 1 receptor expressing paratrigeminal neurons significantly reduced cough evoked by inhaled bradykinin but not inhaled ATP or tracheal mechanical stimulation. The reduction in bradykinin-evoked cough was not accompanied by changes in baseline or evoked respiratory variables (e.g. frequency, volume or timing), a..View full abstract
The authors would like to gratefully acknowledge the support of the Picchi Brothers Foundation.