期刊
JOURNAL OF CLINICAL INVESTIGATION
卷 117, 期 12, 页码 3603-3609出版社
AMER SOC CLINICAL INVESTIGATION INC
DOI: 10.1172/JCI33297
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The voltage-gated sodium-channel type IX cc subunit, known as Na(v)1.7 and encoded by the gene SCN9A, is located in peripheral neurons and plays an important role in action potential production in these cells. Recent genetic studies have identified Nav1.7 dysfunction in three different human pain disorders. Gain-of-function missense mutations in Na(v)1.7 have been shown to cause primary erythermalgia and paroxysmal extreme pain disorder, while nonsense mutations in Na(v)1.7 result in loss of Na(v)1.7 function and a condition known as channelopathy-associated insensitivity to pain, a rare disorder in which affected individuals are unable to feel physical pain. This review highlights these recent developments and discusses the critical role of Na(v)1.7 in pain sensation in humans.
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