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Organization of the histaminergic system in the brain of the teleost, Trachurus trachurus
Author(s) -
Inagaki Naoyuki,
Panula Pertti,
Yamatodani Atsushi,
Wada Hiroshi
Publication year - 1991
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.903100109
Subject(s) - diencephalon , biology , cerebrum , histaminergic , tegmentum , medulla oblongata , anatomy , brainstem , midbrain , neuroscience , pons , central nervous system , histamine , endocrinology
To accumulate phylogenetic information on the central histaminergic system, we investigated the histaminergic system in the brain of a teleost, the jack mackerel ( Trachurus trachurus ), using the indirect immunofluorescent method with antiserum against histamine. A small number of histamine‐ immunoreactive cell bodies were observed in the posterior hypothalamus around the posterior recess. Histamine‐immunoreactive fibers innervated the telencephalon, diencephalon, tegmentum, and rostral part of the medulla oblongata. The immunoreactive fibers were very sparse or absent in the olfactory bulb, optic tectum, cerebellum, caudal part of the medulla oblongata, spinal cord, and hypophysis. Ascending fiber bundles were seen in the basal hypothalamus, supplying fiber collaterals to the telencephalon and diencephalon, whereas descending fibers were observed in the midline of the lower brainstem. These findings suggest that the central histaminergic system of the jack mackerel is homologous to those of mammals, reptiles, and amphibians, although poorly developed compared with them. The histamine‐immunoreactive neuronal cell bodies found in the border area between the mesencephalon and rhomb encephalon of the river lamprey were not detected in the brain of the jack mackere.