Distinct brainstem and forebrain circuits receiving tracheal sensory neuron inputs revealed using a novel conditional anterograde transsynaptic viral tracing system.

McGovern, Alice E, Driessen, Alexandria K, Simmons, David G, Powell, Joseph, Davis-Poynter, Nicholas, Farrell, Michael J and Mazzone, Stuart B (2015) Distinct brainstem and forebrain circuits receiving tracheal sensory neuron inputs revealed using a novel conditional anterograde transsynaptic viral tracing system.. Journal of Neuroscience, 35 18: 7041-7055. doi:10.1523/JNEUROSCI.5128-14.2015

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Author McGovern, Alice E
Driessen, Alexandria K
Simmons, David G
Powell, Joseph
Davis-Poynter, Nicholas
Farrell, Michael J
Mazzone, Stuart B
Title Distinct brainstem and forebrain circuits receiving tracheal sensory neuron inputs revealed using a novel conditional anterograde transsynaptic viral tracing system.
Journal name Journal of Neuroscience   Check publisher's open access policy
ISSN 1529-2401
0270-6474
Publication date 2015-05-06
Year available 2015
Sub-type Article (original research)
DOI 10.1523/JNEUROSCI.5128-14.2015
Open Access Status File (Publisher version)
Volume 35
Issue 18
Start page 7041
End page 7055
Total pages 15
Place of publication Washington, United States
Publisher Society for Neuroscience
Collection year 2016
Language eng
Abstract Sensory nerves innervating the mucosa of the airways monitor the local environment for the presence of irritant stimuli and, when activated, provide input to the nucleus of the solitary tract (Sol) and paratrigeminal nucleus (Pa5) in the medulla to drive a variety of protective behaviors. Accompanying these behaviors are perceivable sensations that, particularly for stimuli in the proximal end of the airways, can be discrete and localizable. Airway sensations likely reflect the ascending airway sensory circuitry relayed via the Sol and Pa5, which terminates broadly throughout the CNS. However, the relative contribution of the Sol and Pa5 to these ascending pathways is not known. In the present study, we developed and characterized a novel conditional anterograde transneuronal viral tracing system based on the H129 strain of herpes simplex virus 1 and used this system in rats along with conventional neuroanatomical tracing with cholera toxin B to identify subcircuits in the brainstem and forebrain that are in receipt of relayed airway sensory inputs via the Sol and Pa5. We show that both the Pa5 and proximal airways disproportionately receive afferent terminals arising from the jugular (rather than nodose) vagal ganglia and the output of the Pa5 is predominately directed toward the ventrobasal thalamus. We propose the existence of a somatosensory-like pathway from the proximal airways involving jugular ganglia afferents, the Pa5, and the somatosensory thalamus and suggest that this pathway forms the anatomical framework for sensations arising from the proximal airway mucosa.
Keyword Airway sensations
HSV- 1 H129
Neuroanatomical tracing
Nucleus of the solitary tract
Paratrigeminal
Visceral sensation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Tue, 12 May 2015, 13:56:14 EST by Dr Stuart Mazzone on behalf of School of Biomedical Sciences