Nav1.8
Nav1.8 is a sodium ion channel subtype that in humans is encoded by the SCN10A gene.
Nav1.8-containing channels are tetrodotoxin (TTX)-resistant voltage-gated channels. Nav1.8 is expressed specifically in the dorsal root ganglion (DRG), in unmyelinated, small-diameter sensory neurons called C-fibres, and is involved in nociception. C-fibres can be activated by noxious thermal or mechanical stimuli and thus can carry pain messages.
The specific location of Nav1.8 in sensory neurons of the DRG may make it a key therapeutic target for the development of new analgesics and the treatment of chronic pain.