Distribution Pattern of Tyrosine Hydroxylase in the Brain and Pituitary of the Lungfish Protopterus annectens

The distribution of tyrosine hydroxylase (TH) was investigated in the brain and pituitary of the African lungfish Protopterus annectens by using immunohistochemistry. TH was expressed in the olfactory bulbs, pallium and subpallium, hypothalamus, tegmentum, reticular formation, nucleus of the solitar...

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Bibliographic Details
Published in:Annals of the New York Academy of Sciences 2009-04, Vol.1163 (1), p.358-360
Main Authors: Bruzzone, F., D'Amora, M., Angelini, C., Vallarino, M.
Format: Article
Language:English
Subjects:
Animals
Brain - enzymology
central nervous system
dipnoans
Female
Fishes - metabolism
Male
pituitary
Pituitary Gland - enzymology
Protopterus annectens
Tyrosine 3-Monooxygenase - metabolism
tyrosine hydroxylase
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Summary:The distribution of tyrosine hydroxylase (TH) was investigated in the brain and pituitary of the African lungfish Protopterus annectens by using immunohistochemistry. TH was expressed in the olfactory bulbs, pallium and subpallium, hypothalamus, tegmentum, reticular formation, nucleus of the solitary tract, and pituitary. In some cells of the hypothalamus and pituitary, TH is colocalized with vasoactive intestinal peptide. In the intermediate and neuronal lobes of the pituitary, TH is expressed in glial fibrillary acidic protein‐contained cells. These data suggest that, in lungfish, catecholamine may play a role in olfaction information processing, regulation of visceral activities, and pituitary secretion.
ISSN:0077-8923
1749-6632
1930-6547
DOI:10.1111/j.1749-6632.2008.03642.x