Cholinergic, serotoninergic and peptidergic components of the nervous system of Discocotyle sagittata (Monogenea: Polyopisthocotylea)

被引:23
作者
Cable, J [1 ]
Marks, NJ [1 ]
Halton, DW [1 ]
Shaw, C [1 ]
Johnston, CF [1 ]
Tinsley, RC [1 ]
Gannicott, AM [1 ]
机构
[1] QUEENS UNIV BELFAST, COMPARAT NEUROENDOCRINOL RES GRP, BELFAST BT7 1NN, ANTRIM, NORTH IRELAND
关键词
Discocotyle sagittata; Monogenea; nervous system; neuropeptides; neuropeptide F; FMRFamide-related peptides; 5-HT; cholinesterase;
D O I
10.1016/S0020-7519(96)00130-0
中图分类号
R38 [医学寄生虫学]; Q [生物科学];
学科分类号
07 ; 0710 ; 09 ; 100103 ;
摘要
Cholinergic, serotoninergic (5-HT) and peptidergic neuronal pathways have been demonstrated in both central and peripheral nervous systems of adult Discocotyle sagittata, using enzyme histochemistry and indirect immunocytochemistry in conjunction with confocal scanning laser microscopy. Antisera to 2 native flatworm neuropeptides, neuropeptide F and the fMRFamide-related peptide (FaRP), GNFFRFamide, were employed to detect peptide immunoreactivity. The CNS is composed of paired cerebral ganglia and connecting dorsal commissure, together with several paired longitudinal nerve cords. The main longitudinal nerve cords (lateral, ventral and dorsal) are interconnected at intervals by a series of annular cross-connectives, producing a ladder-like arrangement typical of the platyhelminth nervous system. At the lever of the haptor, the ventral cords provide nerve roots which innervate each of the 8 clamps. Cholinergic and peptidergic neuronal organisation was similar, but distinct from that of the serotoninergic components. The PNS and reproductive system are predominantly innervated by peptidergic neurones. Copyright (C) 1996 Australian Society for Parasitology. Published by Elsevier Science Ltd.
引用
收藏
页码:1357 / 1367
页数:11
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