𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Calcium signaling in invertebrate glial cells

✍ Scribed by Christian Lohr; Joachim W. Deitmer

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
448 KB
Volume
54
Category
Article
ISSN
0894-1491

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✦ Synopsis

Abstract

Calcium signaling studies in invertebrate glial cells have been performed mainly in the nervous systems of the medicinal leech (Hirudo medicinalis) and the sphinx moth Manduca sexta. The main advantages of studing glial cells in invertebrate nervous systems are the large size of invertebrate glial cells and their easy accessibility for optical and electrophysiological recordings. Glial cells in both insects and annelids express voltage‐gated calcium channels and, in the case of leech glial cells, calcium‐permeable neurotransmitter receptors, which allow calcium influx as one major source for cytosolic calcium transients. Calcium release from intracellular stores can be induced by metabotropic receptor activation in leech glial cells, but appears to play a minor role in calcium signaling. In glial cells of the antennal lobe of Manduca, voltage‐gated calcium signaling changes during postembryonic development and is essential for the migration of the glial cells, a key step in axon guidance and in stabilization of the glomerular structures that are characteristic of primary olfactory centers. © 2006 Wiley‐Liss, Inc.

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