Tyrosine hydroxylase-immunoreactive cells in the nodose ganglion for the canine larynx.
Several substances have been reported as candidates for the neurotransmitter in the laryngeal afferent system. In the present study we demonstrated that catecholamine is also a candidate neurotransmitter in the canine laryngeal afferent system using tyrosine hydroxylase ( TH) immunochemistry in combination with retrograde labelling with cholera toxin B in subunit-conjugated gold (CTBG). A few cells in the nodose ganglion labelled by application of CTBG to the internal branch of the superior laryngeal nerve were also TH-immunoreactive. These cells were also labelled following application of CTBG to the nucleus of the solitary tract. These results indicate that some of the TH-IR cells in the nodose ganglion could be primary afferent neurones for the canine larynx.[1]References
- Tyrosine hydroxylase-immunoreactive cells in the nodose ganglion for the canine larynx. Uno, T., Hisa, Y., Tadaki, N., Okamura, H., Ibata, Y. Neuroreport (1996) [Pubmed]
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