Histaminelike immunoreactive neurons innervating putative neurohaemal areas and central neuropil in the thoraco-abdominal ganglia of the flies Drosophila and Calliphora

The Journal of Comparative Neurology
Dick R NässelP Panula

Abstract

The fused thoraco-abdominal ganglia of the flies Calliphora vomitoria and Drosophila melanogaster were investigated immunocytochemically with antisera against histamine. In both insect species, 18 histaminelike immunoreactive (HA-IR) neurons were resolved in these ganglia. Six of these neurons have cell bodies in the thoracic neuromeres and 12 in the fused abdominal neuromeres. All cell bodies are situated ventrally. In Calliphora all cell bodies are arranged in a segmental pattern. In Drosophila only the thoracic cell bodies have a segmental arrangement, whereas the abdominal ones are clustered anteriorly close to the last thoracic neuromere. In both species the six thoracic neurons supply processes to the synaptic neuropil in the thoracic neuromeres and to the dorsal neural sheath. The processes in the neural sheath run anteriorly in the lateral portions of the ganglion into the cervical connective. In a few regions laterally arborizing terminals are found in putative neurohaemal areas. These areas were investigated by electron microscopic immunocytochemistry in Calliphora. The HA-IR terminals (containing small granular vesicles) were found outside the "blood-brain barrier" below the acellular basal lamina of the neural sheat...Continue Reading

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Citations

Nov 1, 1991·Cell and Tissue Research·I Pollack, A Hofbauer
Mar 20, 1999·Microscopy Research and Technique·A Schmid, C Becherer
Jan 22, 1992·The Journal of Comparative Neurology·P A StevensonJ Rapus
Dec 2, 2005·The Journal of Comparative Neurology·Yasutaka Hamasaka, Dick R Nässel
Mar 20, 1999·Microscopy Research and Technique·D R Nässel
May 20, 1999·Microscopy Research and Technique·M Monastirioti
Aug 15, 1993·The Journal of Comparative Neurology·T KarhunenP Panula
May 22, 1991·The Journal of Comparative Neurology·U Homberg, J G Hildebrand

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