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A subpopulation of nervus terminalis neurons projects to the olfactory mucosa in Xenopus laevis
Author(s) -
Koza Joseph M.,
WirsigWiechmann Celeste R.
Publication year - 2001
Publication title -
journal of neuroscience research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.72
H-Index - 160
eISSN - 1097-4547
pISSN - 0360-4012
DOI - 10.1002/jnr.1192
Subject(s) - biocytin , xenopus , olfactory mucosa , olfactory nerve , terminal nerve , biology , anatomy , olfactory system , immunocytochemistry , olfactory bulb , neuroscience , electrophysiology , central nervous system , endocrinology , hormone , biochemistry , gene
Biocytin application to the normal or zinc sulfate‐treated nasal cavity of Xenopus laevis was used to trace retrogradely neurons associated with the terminal nerve (TN). Immunocytochemistry was conducted to identify the relationship of gonadotropin‐releasing hormone‐immunoreactive (GnRH‐ir) TN neurons with biocytin‐labeled neurons. Neurons that accumulated biocytin were located in olfactory nerve fascicles close to the olfactory mucosa lining the caudal, medial, and rostral walls of the principal cavity. GnRH‐ir fibers were observed only in the olfactory nerve fascicle projecting to the rostral edge of the principal cavity. In addition, GnRH‐ir fibers did not contact biocytin‐labeled TN neurons. We hypothesize that these two classes of neurons represent separate components of the TN. J. Neurosci. Res. 66:8–15, 2001. © 2001 Wiley‐Liss, Inc.