New Insight in Cold Pain: Role of Ion Channels, Modulation, and Clinical Perspectives
Résumé
Cold temperature detection involves the process of sensory transduction in cutaneous primary sensory nerve terminals, which converts thermal stimuli into depolarizations of the membrane. This transformation into electrical signals is followed by the subsequent propagation of action potentials in cold-sensitive afferent nerve fibers. A large array of ion channels shapes this process; however, the precise contribution of specific ion channel subtypes to cold perception and cold pain remains elusive. This review aims at giving an update on our current understanding of the role played by TRPs, leak K ϩ and voltage-gated Na ϩ and K ϩ channels in the transduction of cold by nociceptors and in cold-induced pain.
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