Localization of allatostatin-immunoreactive material in the central nervous system, stomatogastric nervous system, and gut of the cockroach, Blattella germanica

Immunoreactivity against peptides of the allatostatin family having a typical YXFGL-NH2 C-terminus has been localized in different areas of the central nervous system, stomatogastric nervous system and gut of the cockroach Blattella germanica. In the protocerebrum, the most characteristic immunoreac...

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Bibliographic Details
Published in:Archives of insect biochemistry and physiology 1998, Vol.37 (4), p.269-282
Main Authors: Maestro, J.L. (CSIC, Barcelona, Spain.), Belles, X, Piulachs, M.D, Thorpe, A, Duve, H
Format: Article
Language:English
Subjects:
Allatostatin
Amino Acid Sequence
ANATOMIA ANIMAL
ANATOMIE ANIMALE
ANIMAL MORPHOLOGY
Animals
APPAREIL DIGESTIF
BLATTELLA GERMANICA
Brain - cytology
CENTRAL NERVOUS SYSTEM
Cockroaches
CORPORA ALLATA
DIGESTIVE SYSTEM
Digestive System - cytology
Digestive System - innervation
DIGESTIVE TRACT
Female
Ganglia, Invertebrate - cytology
Hormone Antagonists - analysis
IMMUNOCYTOCHEMISTRY
Immunohistochemistry
IMMUNOLOGIE
IMMUNOLOGY
INMUNOLOGIA
NERVOUS SYSTEM
Nervous System - cytology
NEUROPEPTIDES
Neuropeptides - analysis
NEUROSECRETORY SYSTEM
PEPTIDE
PEPTIDES
PEPTIDOS
SISTEMA DIGESTIVO
SISTEMA NERVIOSO
SISTEMA NERVIOSO CENTRAL
SYSTEME NERVEUX
SYSTEME NERVEUX CENTRAL
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Summary:Immunoreactivity against peptides of the allatostatin family having a typical YXFGL-NH2 C-terminus has been localized in different areas of the central nervous system, stomatogastric nervous system and gut of the cockroach Blattella germanica. In the protocerebrum, the most characteristic immunoreactive perikarya are situated in the lateral and median neurosecretory cell groups. Immunoreactive median neurosecretory cells send their axons around the circum-esophageal connectives to form arborizations in the anterior neuropil of the tritocerebrum. A group of cells in the lateral aspect of the tritocerebrum project to the antennal lobes in the deutocerebrum, where immunoreactive arborizations can be seen in the periphery of individual glomeruli. Nerve terminals were shown in the corpora allata. These terminals come from perikarya situated in the lateral neurosecretory cells in the pars lateralis and in the subesophageal ganglion. Immunoreactive axons from median neurosecretory cells and from cells positioned in the anteriormost part of the tritocerebrum enter together in the stomatogastric nervous system and innervate foregut and midgut, especially the crop and the valve between the crop and the midgut. The hindgut is innervated by neurons whose perikarya are located in the last abdominal ganglion. Besides immunoreactivity in neurons, allatostatin-immunoreactive material is present in endocrine cells distributed within the whole midgut epithelium. Possible functions for these peptides according to their localization are discussed
ISSN:0739-4462
1520-6327
DOI:10.1002/(SICI)1520-6327(1998)37:4<269::AID-ARCH2>3.0.CO;2-M