sodium voltage-gated channel alpha subunit 9
Ultimo aggiornamento 18 maggio 2023
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The SCN9A gene belongs to a family of genes that provide instructions for making sodium channels. These channels, which transport positively charged sodium atoms (sodium ions) into cells, play a key role in a cell's ability to generate and transmit electrical signals.
Normal function
The SCN9A gene belongs to a family of genes that provide instructions for making sodium channels. These channels, which transport positively charged sodium atoms (sodium ions) into cells, play a key role in a cell's ability to generate and transmit electrical signals.
The SCN9A gene provides instructions for making one part (the alpha subunit) of a sodium channel called NaV1.7. NaV1.7 sodium channels are found in nerve cells called nociceptors. Nociceptors are part of the peripheral nervous system, which connects the brain and spinal cord to cells that detect sensations such as touch, smell, and pain. Nociceptors are primarily involved in transmitting pain signals. The cell bodies of nociceptors are located in the spinal cord. Fibers called axons extend from the cell bodies, reaching throughout the body to receive sensory information. Axons transmit the information back to the spinal cord, which then sends it to the brain.
NaV1.7 sodium channels are also found in olfactory sensory neurons, which are nerve cells in the nasal cavity that transmit smell-related signals to the brain.
Conditions referring to this gene or chromosome
Altri nomi
hNE
Nav1.7
NE-NA
NENA
PN1
SCN9A_HUMAN
sodium channel, voltage gated, type IX alpha subunit
sodium channel, voltage-gated, type IX, alpha
sodium channel, voltage-gated, type IX, alpha polypeptide
sodium channel, voltage-gated, type IX, alpha subunit
voltage-gated sodium channel alpha subunit Nav1.7
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Ulteriori letture e riferimenti
- sodium voltage-gated channel alpha subunit 9; MedlinePlus, National Library of Medicine.
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- Goldberg YP, MacFarlane J, MacDonald ML, Thompson J, Dube MP, Mattice M, Fraser R, Young C, Hossain S, Pape T, Payne B, Radomski C, Donaldson G, Ives E, Cox J, Younghusband HB, Green R, Duff A, Boltshauser E, Grinspan GA, Dimon JH, Sibley BG, Andria G, Toscano E, Kerdraon J, Bowsher D, Pimstone SN, Samuels ME, Sherrington R, Hayden MR. Loss-of-function mutations in the Nav1.7 gene underlie congenital indifference to pain in multiple human populations. Clin Genet. 2007 Apr;71(4):311-9. doi: 10.1111/j.1399-0004.2007.00790.x.
- Hoeijmakers JG, Merkies IS, Gerrits MM, Waxman SG, Faber CG. Genetic aspects of sodium channelopathy in small fiber neuropathy. Clin Genet. 2012 Oct;82(4):351-8. doi: 10.1111/j.1399-0004.2012.01937.x. Epub 2012 Aug 7.
- Houlden H. Extending the clinical spectrum of pain channelopathies. Brain. 2012 Feb;135(Pt 2):313-6. doi: 10.1093/brain/aws007. No abstract available.
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- Meisler MH, O'Brien JE, Sharkey LM. Sodium channel gene family: epilepsy mutations, gene interactions and modifier effects. J Physiol. 2010 Jun 1;588(Pt 11):1841-8. doi: 10.1113/jphysiol.2010.188482. Epub 2010 Mar 29.
- Singh NA, Pappas C, Dahle EJ, Claes LR, Pruess TH, De Jonghe P, Thompson J, Dixon M, Gurnett C, Peiffer A, White HS, Filloux F, Leppert MF. A role of SCN9A in human epilepsies, as a cause of febrile seizures and as a potential modifier of Dravet syndrome. PLoS Genet. 2009 Sep;5(9):e1000649. doi: 10.1371/journal.pgen.1000649. Epub 2009 Sep 18.
- Waxman SG. Neurobiology: a channel sets the gain on pain. Nature. 2006 Dec 14;444(7121):831-2. doi: 10.1038/444831a. No abstract available.
- Waxman SG. Neuroscience: Channelopathies have many faces. Nature. 2011 Apr 14;472(7342):173-4. doi: 10.1038/472173a. No abstract available.
- Young FB. When adaptive processes go awry: gain-of-function in SCN9A. Clin Genet. 2008 Jan;73(1):34-6. doi: 10.1111/j.1399-0004.2007.00922.x. Epub 2007 Dec 6. No abstract available.
Storia dell'articolo
Articolo disponibile anche in Inglese, Tedesco, Spagnolo, Francese, Italiano, Portoghese, Hindi, Ebraico, Arabo, and Svedese.
18 maggio 2023 | Ultima versione
1 May 2023 | Pubblicato originariamente
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