Distribution of neuropeptide-containing nerve fibers in the salamander taste organs

• Kawakami, T. ^[1] ; Kusakabe, T. ^[2] ; Matsuda, H. ^[2] ; Hiruma, H. ^[1] ; Gono, Y. ^[2] ; Kurihara, K. ^[1] ; Takenaka, T. ^[2]
  1. [1] Kitasato University

     Kitasato University

     Japón

     
  2. [2] Yokohama City University

     Yokohama City University

     Naka Ku, Japón

     
• Localización: Histology and histopathology: cellular and molecular biology, ISSN-e 1699-5848, ISSN 0213-3911, Vol. 13, Nº. 1, 1998, págs. 115-119
• Idioma: inglés
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• Resumen

  • Salamander taste organs were recognized as oval cell clusters within the dorsal surface of the tongue.

    A moderate number of SP, CGRP, VIP, NPY, and GAL immunoreactive nerve fibers terminated in the cell clusters, and some of them penetrated into the basal half of the cell clusters. Around the glands, VIP, NPY, and GAL fibers were numerous, and SP and CGRP fibers were less numerous. Immunoreactivity of SaM and FMRF was not detected either in the nerve fibers associated with the cell clusters or those around the glands. These findings suggest that the chemosensory mechanisms of the salamander gustatory organs are under the control of peptidergic innervation. In addition, the present study indicates that the caudate taste organs are structurally primitive but functionally mature.