Immunocytochemical demonstration of locustatachykinin-related peptides in the central complex of the locust brain

Vitzthum, Harm and Homberg, Uwe (1998) Immunocytochemical demonstration of locustatachykinin-related peptides in the central complex of the locust brain. JOURNAL OF COMPARATIVE NEUROLOGY, 390 (4). pp. 455-469. ISSN 0021-9967, 1096-9861

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Abstract

The central complex, a highly ordered neuropil area in the insect brain, plays a role in motor control and spatial orientation. To further elucidate the neurochemical architecture of this brain area, we have investigated the distribution and morphology of neurons containing locustatachykinin I/II-related substances in the central complex of the locust Schistocerca gregaria. The central complex is innervated by at least 66 locustatachykinin I/II-immunoreactive neurons, which belong to two sets of tangential neurons and four sets of columnar neurons. These neurons give rise to immunostaining in the protocerebral bridge, in several layers of the upper division of the central body, and in all layers except layer 5 of the lower division of the central body. Double-label experiments show colocalization of immunoreactivity for both locustatachykinin I/II and octopamine in tangential neurons of the protocerebral bridge. A pair of tangential neurons of the lower division of the central body exhibits both locustatachykinin I/II and gamma-aminobutyric acid (GABA) immunoreactivity. A set of 16 columnar neurons of the lower division of the central body shows colocalized immunoreactivity for locustatachykinin II, leucokinin, and substance P. This study reveals novel features of the anatomical organization of the locust central complex and suggests a prominent role for locustatachykinin-related peptides as neuromediators and cotransmitters within this brain area. (C) 1998 Wiley-Liss, Inc.

Item Type: Article
Uncontrolled Keywords: CENTRAL-NERVOUS-SYSTEM; SCHISTOCERCA-GREGARIA; DROSOPHILA-MELANOGASTER; IMMUNOREACTIVE NEURONS; MYOTROPIC PEPTIDES; CALLIPHORA-VOMITORIA; APIS-MELLIFERA; MIGRATORIA; INTESTINE; ANATOMY; gamma-aminobutyric acid; immunocytochemistry; insect brain; neuropeptide; octopamine
Subjects: 500 Science > 590 Zoological sciences
Divisions: Biology, Preclinical Medicine > Institut für Zoologie
Depositing User: Dr. Gernot Deinzer
Date Deposited: 24 Oct 2023 09:06
Last Modified: 24 Oct 2023 09:06
URI: https://pred.uni-regensburg.de/id/eprint/50150

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