Therapeutic Concentrations of Local Anaesthetics Unveil the Potential Role of Sodium Channels in Neuropathic Pain

Author(s):  
Gary R. Strichartz ◽  
Zhongren Zhou ◽  
Catherine Sinnott ◽  
Alla Khodorova
1998 ◽  
Vol 62 (2) ◽  
pp. 228-235 ◽  
Author(s):  
Janice L Arruda ◽  
Raymond W Colburn ◽  
Amy J Rickman ◽  
Maria D Rutkowski ◽  
Joyce A DeLeo

2005 ◽  
Vol 1 ◽  
pp. 1744-8069-1-24 ◽  
Author(s):  
Mohammed A Nassar ◽  
Alessandra Levato ◽  
L Caroline Stirling ◽  
John N Wood

Two voltage gated sodium channel α-subunits, Nav1.7 and Nav1.8, are expressed at high levels in nociceptor terminals and have been implicated in the development of inflammatory pain. Mis-expression of voltage-gated sodium channels by damaged sensory neurons has also been implicated in the development of neuropathic pain, but the role of Nav1.7 and Nav1.8 is uncertain. Here we show that deleting Nav1.7 has no effect on the development of neuropathic pain. Double knockouts of both Nav1.7 and Nav1.8 also develop normal levels of neuropathic pain, despite a lack of inflammatory pain symptoms and altered mechanical and thermal acute pain thresholds. These studies demonstrate that, in contrast to the highly significant role for Nav1.7 in determining inflammatory pain thresholds, the development of neuropathic pain does not require the presence of either Nav1.7 or Nav1.8 alone or in combination.


2006 ◽  
Vol 17 (5) ◽  
pp. 571-581 ◽  
Author(s):  
Marc Rogers ◽  
Lam Tang ◽  
David J. Madge ◽  
Edward B. Stevens

2014 ◽  
Vol 27 (3) ◽  
pp. 301 ◽  
Author(s):  
Mohamed Amin Ghobadifar ◽  
Navid Kalani

Cryobiology ◽  
2012 ◽  
Vol 65 (2) ◽  
pp. 132-138 ◽  
Author(s):  
Hui Ju ◽  
Yi Feng ◽  
Zhifeng Gao ◽  
Ba-Xian Yang

2014 ◽  
Vol 113 ◽  
pp. 70-78 ◽  
Author(s):  
C. Patte-Mensah ◽  
L. Meyer ◽  
O. Taleb ◽  
A.G. Mensah-Nyagan

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Ehab El-Awaad ◽  
Galyna Pryymachuk ◽  
Cora Fried ◽  
Jan Matthes ◽  
Jörg Isensee ◽  
...  

Abstract The α2δ‐1 subunit of voltage-gated calcium channels binds to gabapentin and pregabalin, mediating the analgesic action of these drugs against neuropathic pain. Extracellular matrix proteins from the thrombospondin (TSP) family have been identified as ligands of α2δ‐1 in the CNS. This interaction was found to be crucial for excitatory synaptogenesis and neuronal sensitisation which in turn can be inhibited by gabapentin, suggesting a potential role in the pathogenesis of neuropathic pain. Here, we provide information on the biochemical properties of the direct TSP/α2δ-1 interaction using an ELISA-style ligand binding assay. Our data reveal that full-length pentameric TSP-4, but neither TSP-5/COMP of the pentamer-forming subgroup B nor TSP-2 of the trimer-forming subgroup A directly interact with a soluble variant of α2δ-1 (α2δ-1S). Interestingly, this interaction is not inhibited by gabapentin on a molecular level and is not detectable on the surface of HEK293-EBNA cells over-expressing α2δ‐1 protein. These results provide biochemical evidence that supports a specific role of TSP-4 among the TSPs in mediating the binding to neuronal α2δ‐1 and suggest that gabapentin does not directly target TSP/α2δ-1 interaction to alleviate neuropathic pain.


2014 ◽  
Vol 22 (5) ◽  
pp. 269-278 ◽  
Author(s):  
Abhilasha Ahlawat ◽  
Ajay Rana ◽  
Nidhi Goyal ◽  
Saurabh Sharma

Sign in / Sign up

Export Citation Format

Share Document