Neurocalcin-immunoreactive neurons in the petrosal ganglion innervate the taste bud

H. Ichikawa, T. Sugimoto

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The distribution and origin of neurocalcin-immunoreactive (NC-ir) nerve fibers in the taste bud and carotid body were examined by an immunofluorescence method. In the circumvallate papilla of the tongue, NC-ir nerve fibers made subepithelial nerve plexuses and occasionally penetrated the taste bud. However, the carotid body was devoid of ir nerve fibers. In the petrosal ganglion, 32% of neurons were immunoreactive for NC. Such neurons were mostly medium-sized to large, and scattered throughout the ganglion. In the superior cervical and intralingual ganglia, numerous ir varicose fibers surrounded postsynaptic neurons. However, NC-ir could not be detected in cell bodies of these neurons. The retrograde tracing method indicated that NC-ir petrosal neurons innervated taste buds in the circumvallate papilla. NC-ir neurons may have a gustatory function in the petrosal ganglion.

Original languageEnglish
Pages (from-to)244-247
Number of pages4
JournalBrain Research
Issue number1-2
Publication statusPublished - Aug 13 2004


  • Immunohistochemistry
  • Neurocalcin
  • Petrosal ganglion
  • Sensory systems
  • Somatic and visceral afferents
  • Superior cervical ganglion
  • Taste bud

ASJC Scopus subject areas

  • Neuroscience(all)
  • Molecular Biology
  • Clinical Neurology
  • Developmental Biology


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