Referenced in: none

Automatically associated channels: TRESK2

Title: TWIK-Related Spinal Cord K⁺ Channel Expression Is Increased in the Spinal Dorsal Horn after Spinal Nerve Ligation.

Authors: Hee Youn Hwang, Enji Zhang, Sangil Park, Woosuk Chung, Sunyeul Lee, Dong Woon Kim, Youngkwon Ko, Wonhyung Lee

Journal, date & volume: Yonsei Med. J., 2015 Sep , 56, 1307-15

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/26256973

Abstract
The TWIK-related spinal cord K⁺ channel (TRESK) has recently been discovered and plays an important role in nociceptor excitability in the pain pathway. Because there have been no reports on the TRESK expression or its function in the dorsal horn of the spinal cord in neuropathic pain, we analyzed TRESK expression in the spinal dorsal horn in a spinal nerve ligation (SNL) model.We established a SNL mouse model by using the L5-6 spinal nerves ligation. We used real-time polymerase chain reaction and immunohistochemistry to investigate TRESK expression in the dorsal horn and L5 dorsal rot ganglion (DRG).The SNL group showed significantly higher expression of TRESK in the ipsilateral dorsal horn under pain, but low expression in L5 DRG. Double immunofluorescence staining revealed that immunoreactivity of TRESK was mostly restricted in neuronal cells, and that synapse markers GAD67 and VGlut2 appeared to be associated with TRESK expression. We were unable to find a significant association between TRESK and calcineurin by double immunofluorescence.TRESK in spinal cord neurons may contribute to the development of neuropathic pain following injury.