Abstract:
:The central projections of the rat superior sagittal sinus (SSS) sensory innervation were studied by transganglionic tract tracing techniques. Cholera toxin subunit b (CTb) or wheat germ agglutinin-horseradish peroxidase conjugate (WGA-HRP) was applied on the overlying dura of the SSS and labeled terminations in the brainstem and cervical spinal cord were examined under the light microscope. Labeled cell bodies were seen bilaterally in the trigeminal ganglia and in the C2 dorsal root ganglia following both CTb and WGA-HRP applications. In the brainstem, labeled terminations were mainly found in the caudal and interpolar parts of the spinal trigeminal nucleus. In the CTb cases, terminations were also found in the dorsolateral part of the cuneate nucleus. In the spinal cord, labeled terminations were primarily located in the most ventrolateral part of the C1-C3 spinal dorsal horns on both sides. WGA-HRP labeled terminations were mainly located in laminae I and II, whereas CTb-labeled terminations located in laminae III and IV. These results indicate that the sensory information from the SSS is transmitted through both trigeminal and cervical spinal nerve branches to a primary sensory nervous center that extends from the C3 dorsal horn until to the interpolar part of the spinal trigeminal nucleus.
journal_name
Neurosciencejournal_title
Neuroscienceauthors
Liu Y,Broman J,Edvinsson Ldoi
10.1016/j.neuroscience.2004.07.045keywords:
subject
Has Abstractpub_date
2004-01-01 00:00:00pages
431-7issue
2eissn
0306-4522issn
1873-7544pii
S0306-4522(04)00687-6journal_volume
129pub_type
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