PMID- 28342550 OWN - NLM STAT- MEDLINE DCOM- 20180326 LR - 20180326 IS - 1532-2785 (Electronic) IS - 0143-4179 (Linking) VI - 63 DP - 2017 Jun TI - The effects of endothelin-1 on satellite glial cells in peripheral ganglia. PG - 37-42 LID - S0143-4179(16)30176-7 [pii] LID - 10.1016/j.npep.2017.03.002 [doi] AB - Endothelins (ET) are a family of highly active neuropeptides with manifold influences via ET receptors (ETR) in both the peripheral and central nervous systems. We have shown previously that satellite glial cells (SGCs) in mouse trigeminal ganglia (TG) are extremely sensitive to ET-1 in evoking [Ca(2+)](in) increase, apparently via ET(B)R activation, but there is no functional information on ETR in SGCs of other peripheral ganglia. Here we tested the effects of ET-1 on SGCs in nodose ganglia (NG), which is sensory, and superior cervical ganglia (Sup-CG), which is part of the sympathetic nervous system, and further investigated the influence of ET-1 on SGCs in TG. Using calcium imaging we found that SGCs in intact, freshly isolated NG and Sup-CG are highly sensitive to ET-1, with threshold concentration at 0.1nM. Our results showed that [Ca(2+)](in) elevation in response to ET-1 was partially due to Ca(2+) influx from the extracellular space and partially to Ca(2+) release from intracellular stores. Using receptor selective ETR agonists and antagonists, we found that the responses were mediated by mixed ET(A)R/ET(B)R in SGCs of NG and predominantly by ET(B)R in SGCs of Sup-CG. By employing intracellular dye injection we examined coupling among SGCs around different neurons in the presence of 5nM ET-1 and observed coupling inhibition in all the three ganglion types. In summary, our work showed that SGCs in mouse sensory and sympathetic ganglia are highly sensitive to ET-1 and that this peptide markedly reduces SGCs coupling. We conclude that ET-1, which may participate in neuron-glia communications, has similar functions in wide range of peripheral ganglia. CI - Copyright (c) 2017 Elsevier Ltd. All rights reserved. FAU - Feldman-Goriachnik, Rachel AU - Feldman-Goriachnik R AD - Laboratory of Experimental Surgery, Hadassah-Hebrew University Medical Center, Mount Scopus, Jerusalem 91240, Israel. FAU - Hanani, Menachem AU - Hanani M AD - Laboratory of Experimental Surgery, Hadassah-Hebrew University Medical Center, Mount Scopus, Jerusalem 91240, Israel. Electronic address: hananim@cc.huji.ac.il. LA - eng PT - Journal Article DEP - 20170318 PL - Netherlands TA - Neuropeptides JT - Neuropeptides JID - 8103156 RN - 0 (Endothelin Receptor Antagonists) RN - 0 (Endothelin-1) RN - SY7Q814VUP (Calcium) SB - IM MH - Animals MH - Calcium/*metabolism MH - Endothelin Receptor Antagonists/pharmacology MH - Endothelin-1/*pharmacology MH - Ganglia, Sympathetic/*drug effects/metabolism MH - Mice MH - Satellite Cells, Perineuronal/*drug effects/metabolism MH - Trigeminal Ganglion/*drug effects/metabolism OTO - NOTNLM OT - Calcium imaging OT - Endothelin OT - Gap junctions OT - Nodose ganglion OT - Satellite glial cells OT - Superior cervical ganglion OT - Sympathetic ganglia OT - Trigeminal ganglion EDAT- 2017/03/28 06:00 MHDA- 2018/03/27 06:00 CRDT- 2017/03/27 06:00 PHST- 2016/11/17 00:00 [received] PHST- 2017/03/01 00:00 [revised] PHST- 2017/03/16 00:00 [accepted] PHST- 2017/03/28 06:00 [pubmed] PHST- 2018/03/27 06:00 [medline] PHST- 2017/03/27 06:00 [entrez] AID - S0143-4179(16)30176-7 [pii] AID - 10.1016/j.npep.2017.03.002 [doi] PST - ppublish SO - Neuropeptides. 2017 Jun;63:37-42. doi: 10.1016/j.npep.2017.03.002. Epub 2017 Mar 18.