NDLI: Hypoglossal Afferents to Lamina I Neurons of the Cervical Spinal Cord Projecting to the Parabrachial Nucleus in the Cat

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Hypoglossal Afferents to Lamina I Neurons of the Cervical Spinal Cord Projecting to the Parabrachial Nucleus in the Cat

Content Provider	Scilit
Author	Takeuchi, Yoshiki Itoh, Masahiro Miki, Takahiro Chen, Xiao Hua Sun, Wei
Copyright Year	1995
Description	Journal: Somatosensory & motor research Attempts were made to determine the hypoglossal sensory inputs to the parabrachial nucleus (PBN) through the spinal cord. Wheatgerm agglutinin conjugated to horseradish peroxidase (WGA:HRP) was injected into the cat hypoglossal nerve. HRP-labeled fibers, predominantly derived from the glossopharyngeal and vagal nerves, were observed to terminate in lamina I of the upper cervical spinal cord. A few fibers were also distributed to laminae IV-V and VII-VIII ipsilaterally. WGA:HRP injection into the lateral portion of the PBN also resulted in retrograde labeling in lamina I with ipsilateral predominance. Light-microscopic data raised the possibility of a relay of hypoglossal sensory information to the PBN in lamina I of the cervical spinal cord. In order to confirm the spinal relay, electron-microscopic observations were carried out on lamina I of $C_{1}$ spinal cord after sectioning of the hypoglossal nerve and WGA:HRP injection into the lateral portion of the PBN on the same side in each animal. It was of particular interest that degenerated hypoglossal afferent fibers made synaptic contacts with lamina I neurons, which were retrogradely labeled with HRP.
Related Links	https://www.tandfonline.com/doi/pdf/10.3109/08990229509093657
Ending Page	198
Page Count	8
Starting Page	191
ISSN	08990220
e-ISSN	13691651
DOI	10.3109/08990229509093657
Journal	Somatosensory & motor research
Issue Number	3-4
Volume Number	12
Language	English
Publisher	Informa UK Limited
Publisher Date	1995-01-01
Access Restriction	Open
Subject Keyword	Journal: Somatosensory & motor research Neurosciences Hypoglossal Nerve Afferent Fibers Parabrachial Nucleus Nociceptive Information
Content Type	Text
Subject	Physiology Sensory Systems

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