Gα(q/11) signaling tonically modulates nociceptor function and contributes to activity-dependent sensitization
Peripheral injury or inflammation leads to a release of mediators capable of binding to a variety of ion channels and receptors. Among these are the 7-transmembrane receptors (G protein-coupled receptors) coupling to G(s), G(i/o), G₁₂/₁₃, or G(q/11) G proteins. Each of the G protein-coupled receptor...
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| Hauptverfasser: | , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2012
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| In: |
Pain
Year: 2011, Jahrgang: 153, Heft: 1, Pages: 184-196 |
| ISSN: | 1872-6623 |
| DOI: | 10.1016/j.pain.2011.10.014 |
| Online-Zugang: | Verlag, Volltext: https://journals.lww.com/pain/Fulltext/2012/01000/G_q_11_signaling_tonically_modulates_nociceptor.27.aspx Verlag, Volltext: http://dx.doi.org/10.1016/j.pain.2011.10.014 
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| Verfasserangaben: | Anke Tappe-Theodor, Cristina E. Constantin, Irmgard Tegeder, Stefan G. Lechner, Michiel Langeslag, Peter Lepcynzsky, Richard I. Wirotanseng, Martina Kurejova, Nitin Agarwal, Gergely Nagy, Andrew Todd, Nina Wettschureck, Stefan Offermanns, Michaela Kress, Gary R. Lewin, Rohini Kuner |
MARC
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| 245 | 1 | 0 | |a Gα(q/11) signaling tonically modulates nociceptor function and contributes to activity-dependent sensitization |c Anke Tappe-Theodor, Cristina E. Constantin, Irmgard Tegeder, Stefan G. Lechner, Michiel Langeslag, Peter Lepcynzsky, Richard I. Wirotanseng, Martina Kurejova, Nitin Agarwal, Gergely Nagy, Andrew Todd, Nina Wettschureck, Stefan Offermanns, Michaela Kress, Gary R. Lewin, Rohini Kuner |
| 246 | 3 | 3 | |a Galpha(q/11) signaling tonically modulates nociceptor function and contributes to activity-dependent sensitization |
| 264 | 1 | |c 2012 | |
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| 520 | |a Peripheral injury or inflammation leads to a release of mediators capable of binding to a variety of ion channels and receptors. Among these are the 7-transmembrane receptors (G protein-coupled receptors) coupling to G(s), G(i/o), G₁₂/₁₃, or G(q/11) G proteins. Each of the G protein-coupled receptor pathways is involved in nociceptive modulation and pain processing, but the relative contribution of individual signaling pathways in vivo has not yet been worked out. The G(q)/G₁₁ signaling branch is of particular interest because it leads to the activation of phospholipase C-β, protein kinase C, the release of calcium from intracellular stores, and it modulates extracellular regulated kinases. To investigate the contribution of the entire G(q/11)-signaling pathway in nociceptors towards regulation of pain, we generated double-deficient mice lacking G(q/11) selectively in nociceptors using a conditional gene-targeting approach. We observed that nociceptor-specific loss of G(q) and G₁₁ results in reduced pain hypersensitivity following paw inflammation or spared nerve injury. Surprisingly, our behavioral and electrophysiological experiments also indicated defects in basal mechanical sensitivity in G(q/11) mutant mice, suggesting a novel function for G(q/11) in tonic modulation of acute nociception. Patch-clamp recordings revealed changes in voltage-dependent tetrodotoxin-resistant and tetrodotoxin-sensitive sodium channels in nociceptors upon a loss of G(q/11), whereas potassium currents remained unchanged. Our results indicate that the functional role of the G(q)/G₁₁ branch of G-protein signaling in nociceptors in vivo not only spans sensitization mechanisms in pathological pain states, but is also operational in tonic modulation of basal nociception and acute pain. | ||
| 534 | |c 2011 | ||
| 650 | 4 | |a Animals | |
| 650 | 4 | |a Cells, Cultured | |
| 650 | 4 | |a Ganglia, Spinal | |
| 650 | 4 | |a GTP-Binding Protein alpha Subunits, Gq-G11 | |
| 650 | 4 | |a Hyperalgesia | |
| 650 | 4 | |a Mice | |
| 650 | 4 | |a Mice, Knockout | |
| 650 | 4 | |a Neurons | |
| 650 | 4 | |a Nociception | |
| 650 | 4 | |a Nociceptors | |
| 650 | 4 | |a Pain Measurement | |
| 650 | 4 | |a Protein Kinase C | |
| 650 | 4 | |a Signal Transduction | |
| 650 | 4 | |a Type C Phospholipases | |
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| 700 | 1 | |a Wirotanseng, Richard I. |e VerfasserIn |0 (DE-588)1162540230 |0 (DE-627)1026674204 |0 (DE-576)50748388X |4 aut | |
| 700 | 1 | |a Kurejova, Martina |e VerfasserIn |0 (DE-588)1161756434 |0 (DE-627)1025210492 |0 (DE-576)506853721 |4 aut | |
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