Publication: Response of the gut neuroendocrine system of Leuciscus cephalus (L.) to the presence of
Pomphorhynchus laevis Müller, 1776 (Acanthocephala)
Authors
Bosi, G. ; Domeneghini, C. ; Arrighi, S. ; Giari, L. ; Dezfuli, B.S.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Immunohistochemical tests were applied to
sections of intestine of uninfected and Pomphorhynchus
laevis Müller-infected chub, Leuciscus cephalus (L.)
using 15 different antisera. Nerve cell bodies and fibres
immunoreactive (IR) to the anti-bombesin,
-Cholecystokinin-8 (CCK-8), -galanin, -Gastrin-
Releasing Peptide (-GRP), -Nitric Oxide Synthase
(-NOS), -Substance P (-SP), and -Vasoactive Intestinal
Peptide (-VIP) sera were observed in the myenteric
plexus of uninfected chub. The density of nerve
components immunoreactive to these antisera was high
in the intestine of the infected fish, especially near the
site of attachment. Moreover, numerous nerve fibres,
immunoreactive to anti-bombesin, -GRP, -galanin, -SP,
and -VIP sera, were encountered in the connective tissue
capsule surrounding the bulb and proboscis of P. laevis.
The occurrence of P. laevis in the chub gut significantly
increased the number of endocrine cells per intestinal
fold immunoreactive to galanin, met-enkephalin and leuenkephalin
antisera. CCK-8, Neuropeptide Y and
glucagon-like immunoreactive cells were less numerous
in the intestine of infected chub. A large number of cells
in the tunica propria-submucosa of L. cephalus infected
with P. laevis were immunoreactive to anti-serotonin and
-leu-enkephalin sera.
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