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Ultrastructural and neuropharmacological findings in the nerve/muscle system of a digenean (Cercaria caribbea LXXI Cable)
Comp Biochem Physiol ; 90C(2): 295-303, 1988.
Artigo em Inglês | MedCarib | ID: med-10181
Biblioteca responsável: JM3.1
ABSTRACT
The surface morphology and organization of the neuromuscular system in Cercaria caribbea LXXI are investigated using scanning and transmission electron microscopy, respectively. Direct and indirect (sarconeural) nerve-muscle junctions are identified in the cercarial tail. Synaptic vesicles at the direct neuromuscular junction suggest cholinergic and aminoacidergic transmission. Those at the sarconeural junctions suggest catecholaminergic and/or serotonergic transmission. Acetylcholinesterase and non-specific cholinesterases were found in high concentrations in the proximal and distal tail. Flourescence histochemistry showed primary catecholamines and 5-HT in the body and tail. 5-HT in the tail may represent a slowly depleted store, perhaps associated with energy availability and utilization. (AU)
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Coleções: Bases de dados internacionais Base de dados: MedCarib Assunto principal: Parasitos / Junção Neuromuscular Idioma: Inglês Revista: Comp Biochem Physiol Ano de publicação: 1988 Tipo de documento: Artigo