1992 Fiscal Year Final Research Report Summary
INNERVATION OF AUTONOMIC NERVE OF THE ESOPHAGUS, STUDIED BY HRP METHOD.
| Project/Area Number |
02670547
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
General surgery
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| Research Institution | EHIME UNIVERSITY |
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Principal Investigator |
IWAHASHI Kanji EHIME UNIVERSITY HEALTH ADMINISTRATION CENTER PROFESSOR, 保健管理センター, 教授 (00110825)
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| Co-Investigator(Kenkyū-buntansha) |
MATSUDA Ryoichi EHIME UNIVERSITY SCHOOL OF MEDICINE, ASSISTANT, 医学部, 助手 (10243784)
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| Project Period (FY) |
1990 – 1992
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| Keywords | Esophagus / Cat / Innervation / HRP / Sensory Nerve / Pain / Retrograde Axonal Transport / Spinal Dorsal Root Ganglion |
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| Research Abstract |
Using the HRP method, the afferent innervation of the esophagus was studied in the cat.
The cervical esophagus had bilateral afferent innervation via dorsal root ganglia(DRG) cells from C1 to T9. The main pathways traveled through the phrenic and greater splanchnic nerves. The thoratic,lower esophagus also had bilateral afferent innervation via DRG cells from C5 to T13. The main pathway traveled through the greater splanchnic nerve. There were other pathways as well,sympathetic cardiac branch via the stellate ganglion and branches from the cervical and thoracic sympathetic trunk.
Vagal afferent innervation was relatively predominant in the cervical esophagus, while sympathetic innervation was predominant in the thoracic, lower esophagus.
The cervical esophagus received sympathetic postganglionic innervation via the paravertebral ganglia between the superior cervical ganglia and the T8 sympathetic ganglia. The thoracic, lower esophagus also received sympathetic post-ganglionic innervation via the paravertebral ganglia between the superior cervical ganglia and the T12 sympathetic ganglia and the prevertebral ganglia.
The parasympathetic preganglionic neurons innervating cervical esophagus were located in the nucleus ambiguous, but in the nucleus ambiguous and dorsal nucleus of the vagal nerve in the case of the thoracic,lower esophagus.
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