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Peripheral inflammation augments gap junction-mediated coupling among satellite glial cells in mouse sympathetic ganglia

Published online by Cambridge University Press:  05 March 2010

Menachem Hanani ,
Anna Caspi  and
Vitali Belzer
Menachem Hanani*
Affiliation:
Laboratory of Experimental Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
Anna Caspi
Affiliation:
Laboratory of Experimental Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
Vitali Belzer
Affiliation:
Laboratory of Experimental Surgery, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
*
Correspondence should be addressed to: Menachem Hanani, Laboratory of Experimental Surgery, Hadassah University Hospital, Mount Scopus, Jerusalem 91240, Israel phone: 972-2-5844721 fax: 972-2-5823515 email: hananim@cc.huji.ac.il
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Abstract

Intercellular coupling by gap junctions is one of the main features of glial cells, but very little is known about this aspect of satellite glial cells (SGCs) in sympathetic ganglia. We used the dye coupling method to address this question in both a prevertebral ganglion (superior mesenteric) and a paravertebral ganglion (superior cervical) of mice. We found that in control ganglia, the incidence of dye coupling among SGCs that form the envelope around a given neuron was 10–20%, and coupling between SGCs around different envelopes was rare (1.5–3%). The dye injections also provided novel information on the structure of SGCs. Following peripheral inflammation, both types of coupling were increased, but most striking was the augmentation of coupling between SGCs forming envelopes around different neurons, which rose by 8–14.6-fold. This effect appeared to be non-systemic, and was blocked by the gap junction blocker carbenoxolone. These changes in SGCs may affect signal transmission and processing in sympathetic ganglia.

Keywords

Gliainflammationdye couplingsuperior mesenteric ganglionsuperior cervical ganglion
Type
Research Article
Information
Neuron Glia Biology , Volume 6 , Special Issue 1: Satellite Glial Cells , February 2010 , pp. 85 - 89
Copyright
Copyright © Cambridge University Press 2010

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