Silent Cold-sensing Neurons Contribute to Cold Allodynia in Neuropathic Pain
Overview
Authors
Affiliations
Patients with neuropathic pain often experience innocuous cooling as excruciating pain. The cell and molecular basis of this cold allodynia is little understood. We used in vivo calcium imaging of sensory ganglia to investigate how the activity of peripheral cold-sensing neurons was altered in three mouse models of neuropathic pain: oxaliplatin-induced neuropathy, partial sciatic nerve ligation, and ciguatera poisoning. In control mice, cold-sensing neurons were few in number and small in size. In neuropathic animals with cold allodynia, a set of normally silent large diameter neurons became sensitive to cooling. Many of these silent cold-sensing neurons responded to noxious mechanical stimuli and expressed the nociceptor markers Nav1.8 and CGRPα. Ablating neurons expressing Nav1.8 resulted in diminished cold allodynia. The silent cold-sensing neurons could also be activated by cooling in control mice through blockade of Kv1 voltage-gated potassium channels. Thus, silent cold-sensing neurons are unmasked in diverse neuropathic pain states and cold allodynia results from peripheral sensitization caused by altered nociceptor excitability.
TET1 participates in oxaliplatin-induced neuropathic pain by regulating microRNA-30b/Nav1.6.
Zhao S, Zhang J, Zhang M, Yang Q, Li Z, Ren X J Biol Chem. 2025; 301(3):108228.
PMID: 39864621 PMC: 11894311. DOI: 10.1016/j.jbc.2025.108228.
Targeting Na1.7 and Na1.8 with a PIKfyve inhibitor to reverse inflammatory and neuropathic pain.
Rodriguez-Palma E, Loya-Lopez S, Min S, Calderon-Rivera A, Gomez K, Khanna R Neurobiol Pain. 2024; 17:100174.
PMID: 39720155 PMC: 11665415. DOI: 10.1016/j.ynpai.2024.100174.
Pina R, Ugarte G, Guevara C, Pino R, Valdebenito K, Romero S Front Pharmacol. 2024; 15:1484387.
PMID: 39703391 PMC: 11655194. DOI: 10.3389/fphar.2024.1484387.
Novel therapies for cancer-induced bone pain.
Haroun R, Gossage S, Iseppon F, Fudge A, Caxaria S, Arcangeletti M Neurobiol Pain. 2024; 16:100167.
PMID: 39399223 PMC: 11470602. DOI: 10.1016/j.ynpai.2024.100167.
Sawada A, Yamakage M J Anesth. 2024; 38(6):828-838.
PMID: 39244720 DOI: 10.1007/s00540-024-03402-9.