The voltage-gated sodium channel NaV 1.9 in visceral pain.
2016
Background
Visceral pain is a common symptom for patients with gastrointestinal (GI) disease. It is unpleasant, debilitating, and represents a large unmet medical need for effective clinical treatments. Recent studies have identified NaV1.9 as an important regulator of afferent sensitivity in visceral pain pathways to mechanical and inflammatory stimuli, suggesting that NaV1.9 could represent an important therapeutic target for the treatment of visceral pain. This potential has been highlighted by the identification of patients who have an insensitivity to pain or painful neuropathies associated with mutations in SCN11A, the gene encoding voltage-gated sodium channel subtype 1.9 (NaV1.9).
Purpose
Here, we address the role of NaV1.9 in visceral pain and what known human NaV1.9 mutants can tell us about NaV1.9 function in gut physiology and pathophysiology.
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