Depletion of calcitonin gene-related peptide from the caudal trigeminal nucleus of the rat after electrical stimulation of the Gasserian ganglion

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Abstract

Electrical stimulation of the Gasserian ganglion resulted in partial depletion of calcitonin gene-related peptide (CGRP) from ipsilateral central terminals of pseudounipolar primary sensory ganglion cells. Affected terminals exhibit decreased CGRP immunoreactivity as shown by cytophotometric densitomery of the caudal trigeminal nucleus. The decrease in CGRP immunoreactivity is statistically significant only in the medial one-third of the caudal trigeminal nucleus. Since earlier studies have shown that electrical stimulation of the Gasserian ganglion induces first accumulation then depletion of CGRP from perivascular sensory terminals in the dura mater, the present experiments suggest that CGRP is depleted also from central terminals of primary sensory trigeminal neurons, which might be of importance in the pathogenesis of migraine headache.

Original languageEnglish
Pages (from-to)111-114
Number of pages4
JournalExperimental brain research
Volume118
Issue number1
DOIs
Publication statusPublished - Feb 9 1998

Keywords

  • Calcitonin generelated peptide
  • Caudal trigeminal nucleus
  • Electrical stimulation
  • Migraine
  • Rat
  • Trigeminal ganglion

ASJC Scopus subject areas

  • Neuroscience(all)

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