| Octopamine immunoreactive cell populations in the locust thoracic-abdominal nervous system. | |
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MedLine Citation:
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PMID: 1373157 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We describe octopamine-immunoreactive somata and their projections in the pro- meso-, meta- and pregenital abdominal-ganglia of locusts. Immunoreactive midline somata were identified as dorsal- and ventral- unpaired median (DUM- and VUM-, respectively) neurones due to their: characteristic large size and positions of somata, primary neurites in DUM-tracts giving rise to T-junctions, and bilaterally projecting axons. In the prothoracic ganglion there are most likely 8 such cells; in the meso- and metathoracic, some 20 each; and in each individual pregenital abdominal ganglion, typically 3. All appear to project to peripheral nerves and their numbers correspond to the number of peripherally projecting DUM-cells identified to date in each ganglion. We suggest that probably all peripherally projecting DUM-cells are octopaminergic in the examined ganglia. Presumptive DUM-interneurones are not octopamine-immunoreactive, but, confirming other studies, are shown to label with an antiserum to gamma-amino butyric acid (GABA). Other octopamine-immunoreactive neurones include a pair of midline, prothoracic, anterior medial cells, not necessarily DUM-cells, and a pair of ventral lateral somata in each thoracic- and the first abdominal ganglion. The latter project intersegmentally in ventral tracts. Intersegmentally projecting octopamine-immunoreactive fibers in dorsal tracts probably arise from a prothoracic DUM-cell, which leaves through suboesophageal nerves, or descending suboesophageal DUM-cells. Thus, the octopamine-immunoreactive system of thoracic and pregenital abdominal ganglia in locust comprises all peripherally projecting DUM-cells and a plurisegmental network. |
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Authors:
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P A Stevenson; H J Pflüger; M Eckert; J Rapus |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of comparative neurology Volume: 315 ISSN: 0021-9967 ISO Abbreviation: J. Comp. Neurol. Publication Date: 1992 Jan |
Date Detail:
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Created Date: 1992-05-11 Completed Date: 1992-05-11 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0406041 Medline TA: J Comp Neurol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 382-97 Citation Subset: IM |
Affiliation:
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Freie Universität Berlin, Institut für Neurobiologie, Federal Republic of Germany. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Abdomen
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innervation* Animals Ganglia / cytology Grasshoppers / physiology* Immunohistochemistry Neurosecretory Systems / cytology Octopamine / immunology, metabolism* Staining and Labeling Thorax / immunology, innervation* gamma-Aminobutyric Acid / immunology, metabolism |
| Chemical | |
Reg. No./Substance:
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104-14-3/Octopamine; 56-12-2/gamma-Aminobutyric Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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