Publication: Distribution of neuropeptide Y-like immunoreactivity in the brain of Salmo salar and Gambusia affinis
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Date
1992
Authors
García-Fernández, J.M. ; Del Brío, M.A. ; Cernuda-Cernuda, R. ; Coto, A. ; Riera, P.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Through the imrnunohistochernical PAP
technique, the distribution of irnrnune positive neurons
and fibres for an antibody anti-NPY in the encephalon
of salrnon fixed in Bouin have been located and studied.
NPY-positive neurons are found forming three
important nuclei: in the ventrolateral telencephalon; in
the tegmentum mesencephali; and in the locus
coemleus. Neurons in the optic tecturn, in the thalarnic
region and a few in the preoptic recess have also been
located. The fibres were found throughout the brain,
with the exception of the cerebellurn, presenting a
greater density in three regions: in the dorsal
telencephalon; in the mesencephalon; and in the visceral
lobes in the rhombencephalon.
With the airn of proving if this distribution is found
in other groups of teleosts, we processed, with the sarne
technique, the advanced teleost Gambusia affinis, in
order to compare it with the prirnitive teleost Salmo
salar. The results show that in both fish this
neuropeptide has the same pattem of distribution.
The results also suggest that in fish this
neuropeptide can be involved in severa1 functions of the
central nervous systern, as has been dernonstrated for
rnarnmals. The innervation of the visceral lobes and also
the presence of NPY-fibres in the posterior
hypothalarnus are anatornical supports of the studies
which suggest that NPY is related to the control of the
food intake.
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