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Catecholaminergic innervation of muscles in the hindgut of crustaceans

Elofsson, Rolf LU ; Elekes, Karoly and Myhrberg, Harry (1978) In Cell and Tissue Research 189. p.257-266
Abstract
The crustacean species Pacifastacus leniusculus and Gammarus pulex were investigated by electron microscopy in a search for possible neuromuscular junctions in the hindgut, which has a rich supply of catecholaminergic fibres. True neuromuscular synapses were found in both species between nerve terminals containing dense-core vesicles (80–110 nm in diam.) and muscle fibres. We suggest that the dense-core vesicle terminals contain a catecholamine, and this is supported by ultrahistochemical tests for monoamines. Two types of junctions are found: one in which the nerve terminal is embedded in the muscle cell (both species) and one in which protrusions from the muscle cell meet nerve terminals (Pacifastacus). Gammarus pulex, which has only... (More)
The crustacean species Pacifastacus leniusculus and Gammarus pulex were investigated by electron microscopy in a search for possible neuromuscular junctions in the hindgut, which has a rich supply of catecholaminergic fibres. True neuromuscular synapses were found in both species between nerve terminals containing dense-core vesicles (80–110 nm in diam.) and muscle fibres. We suggest that the dense-core vesicle terminals contain a catecholamine, and this is supported by ultrahistochemical tests for monoamines. Two types of junctions are found: one in which the nerve terminal is embedded in the muscle cell (both species) and one in which protrusions from the muscle cell meet nerve terminals (Pacifastacus). Gammarus pulex, which has only circular muscles in the hindgut, has only catecholaminergic innervation, whereas Pacifastacus leniusculus has circular and longitudinal muscles both with at least two types of innervation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Neuromuscular junction, Hindgut, Crustacea, Catecholamine, Electron microscopy
in
Cell and Tissue Research
volume
189
pages
257 - 266
publisher
Springer
external identifiers
  • Scopus:0018192114
ISSN
1432-0878
DOI
10.1007/BF00209275
language
English
LU publication?
yes
id
224e9f93-6fd2-4a0b-b44c-d628bd23bf2d
date added to LUP
2016-11-30 16:22:05
date last changed
2017-01-01 08:41:16
@article{224e9f93-6fd2-4a0b-b44c-d628bd23bf2d,
  abstract     = {The crustacean species Pacifastacus leniusculus and Gammarus pulex were investigated by electron microscopy in a search for possible neuromuscular junctions in the hindgut, which has a rich supply of catecholaminergic fibres. True neuromuscular synapses were found in both species between nerve terminals containing dense-core vesicles (80–110 nm in diam.) and muscle fibres. We suggest that the dense-core vesicle terminals contain a catecholamine, and this is supported by ultrahistochemical tests for monoamines. Two types of junctions are found: one in which the nerve terminal is embedded in the muscle cell (both species) and one in which protrusions from the muscle cell meet nerve terminals (Pacifastacus). Gammarus pulex, which has only circular muscles in the hindgut, has only catecholaminergic innervation, whereas Pacifastacus leniusculus has circular and longitudinal muscles both with at least two types of innervation.},
  author       = {Elofsson, Rolf and Elekes, Karoly and Myhrberg, Harry},
  issn         = {1432-0878},
  keyword      = {Neuromuscular junction,Hindgut,Crustacea,Catecholamine,Electron microscopy},
  language     = {eng},
  pages        = {257--266},
  publisher    = {Springer},
  series       = {Cell and Tissue Research},
  title        = {Catecholaminergic innervation of muscles in the hindgut of crustaceans},
  url          = {http://dx.doi.org/10.1007/BF00209275},
  volume       = {189},
  year         = {1978},
}