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A vagal–brainstem interoceptive circuit for cough-like defensive behaviors in mice
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A vagal–brainstem interoceptive circuit for cough-like defensive behaviors in mice
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Journal Article
A vagal–brainstem interoceptive circuit for cough-like defensive behaviors in mice
2024
Overview
Coughing is a respiratory behavior that plays a crucial role in protecting the respiratory system. Here we show that the nucleus of the solitary tract (NTS) in mice contains heterogenous neuronal populations that differentially control breathing. Within these subtypes, activation of tachykinin 1 (Tac1)-expressing neurons triggers specific respiratory behaviors that, as revealed by our detailed characterization, are cough-like behaviors. Chemogenetic silencing or genetic ablation of Tac1 neurons inhibits cough-like behaviors induced by tussive challenges. These Tac1 neurons receive synaptic inputs from the bronchopulmonary chemosensory and mechanosensory neurons in the vagal ganglion and coordinate medullary regions to control distinct aspects of cough-like defensive behaviors. We propose that these Tac1 neurons in the NTS are a key component of the airway–vagal–brain neural circuit that controls cough-like defensive behaviors in mice and that they coordinate the downstream modular circuits to elicit the sequential motor pattern of forceful expiratory responses.
Gannot et al. show that Tac1 neurons in the NTS mediate an airway–vagal–brain pathway that is crucial for coughing in mice. These neurons receive direct vagal sensory inputs and coordinate downstream circuits to control coughing.
Publisher
Nature Publishing Group US,Nature Publishing Group
Subject
