Immunohistochemical cell types in the terminal nerve ganglion of the cloudy dogfish, Scyliorhinus torazame, with special regard to neuropeptide Y/FMRFamide-immunoreactive cells.
Previous studies showed immunoreactivities for neuropeptide Y (NPY), molluscan cardioexcitatory tetrapeptide (FMRFamide), and gonadotropin-releasing hormone (GnRH) in the terminal nerve of elasmobranchs. The present immunohistochemical study demonstrated two types of cells, i.e. GnRH- and NPY/FMRFamide-positive cells, in the terminal nerve ganglion of the elasmobranch Scyliorhinus torazame. The second cell type (non-GnRH element) contained a substance with a common structure or epitope recognized by anti-NPY and anti-FMRFamide antibodies. The NPY/FMRFamide-like immunoreactivity was associated with granules 70-130 nm in diameter, found in the cell bodies, axons, and axon endings.
Chiba
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Department of Biology, Nippon Dental University School of Dentistry at Niigata, 951-8580, Niigata, Japan. chiba@ngt.ndu.ac.jp
D000818:Animals; D004284:Dogfish / Q000033:anatomy & histology* / Q000378:metabolism*; D019835:FMRFamide / Q000378:metabolism*; D005260:Female; D005724:Ganglia / Q000166:cytology* / Q000378:metabolism; D007987:Gonadotropin-Releasing Hormone / Q000378:metabolism; D007150:Immunohistochemistry; D008297:Male; D009411:Nerve Endings / Q000166:cytology* / Q000378:metabolism; D009478:Neuropeptide Y / Q000378:metabolism*; D014018:Tissue Distribution
D009478:Neuropeptide Y; D007987:Gonadotropin-Releasing Hormone; D019835:FMRFamide