Cholinergic, serotoninergic and peptidergic components of the nervous system of Haematoloechus medioplexus (Trematoda, Digenea), characterised by cytochemistry

J.E. Humphries, D W Halton, R.N. Johnston, Aaron Maule, Colin Johnston, Christopher Shaw

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Abstract

Cholinergic, serotoninergic and peptidergic neuronal pathways have been demonstrated in whole-mount preparations of the frog-lung digenean trematode, Haematoloechus medioplexus, using enzyme cytochemical methodologies and indirect immunocytochemical techniques in conjunction with confocal scanning laser microscopy. All 3 classes of neuroactive substance mere found throughout both central and peripheral elements of a well-developed orthogonal nervous system, Peptidergic immunoreactivity was particularly strong, using antisera directed to native flatworm neuropeptides, neuropeptide F, and FMRFamide-related peptides (FaRPs), and there was significant overlap in the staining with that for cholinergic components, The serotoninergic system appeared quite separate, with the staining localised to a different set of neurons. (C) 1997 Australian Society for Parasitology.
Original languageEnglish
Pages (from-to)517-525
Number of pages9
JournalInternational Journal for Parasitology
Volume27
Publication statusPublished - 1997

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