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

  • Menachem Hanani (a1), Anna Caspi (a1) and Vitali Belzer (a1)
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.

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Corresponding author
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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Neuron Glia Biology
  • ISSN: 1740-925X
  • EISSN: 1741-0533
  • URL: /core/journals/neuron-glia-biology
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