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Pathway Description
Lidocaine (Local Anaesthetic) Metabolism Pathway
Homo sapiens
Drug Metabolism Pathway
Created: 2013-09-11
Last Updated: 2019-08-16
Lidocaine exerts its local anaesthetic effect by blocking voltage-gated sodium channels in peripheral neurons. Lidocaine diffuses across the neuronal plasma membrane in its uncharged base form. Once inside the cytoplasm, it is protonated and this protonated form enters and blocks the pore of the voltage-gated sodium channel from the cytoplasmic side. For this to happen, the sodium channel must first become active so that so that gating mechanism is in the open state. Therefore lidocaine preferentially inhibits neurons that are actively firing.
References
Lidocaine (Local Anaesthetic) Pathway References
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Pubmed: 19465198
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Pubmed: 3462722
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Pubmed: 11181494
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Pubmed: 3267210
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Pubmed: 9839820
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Pubmed: 16641997
Varela I, Tarpey P, Raine K, Huang D, Ong CK, Stephens P, Davies H, Jones D, Lin ML, Teague J, Bignell G, Butler A, Cho J, Dalgliesh GL, Galappaththige D, Greenman C, Hardy C, Jia M, Latimer C, Lau KW, Marshall J, McLaren S, Menzies A, Mudie L, Stebbings L, Largaespada DA, Wessels LF, Richard S, Kahnoski RJ, Anema J, Tuveson DA, Perez-Mancera PA, Mustonen V, Fischer A, Adams DJ, Rust A, Chan-on W, Subimerb C, Dykema K, Furge K, Campbell PJ, Teh BT, Stratton MR, Futreal PA: Exome sequencing identifies frequent mutation of the SWI/SNF complex gene PBRM1 in renal carcinoma. Nature. 2011 Jan 27;469(7331):539-42. doi: 10.1038/nature09639. Epub 2011 Jan 19.
Pubmed: 21248752
Makita N, Sloan-Brown K, Weghuis DO, Ropers HH, George AL Jr: Genomic organization and chromosomal assignment of the human voltage-gated Na+ channel beta 1 subunit gene (SCN1B). Genomics. 1994 Oct;23(3):628-34. doi: 10.1006/geno.1994.1551.
Pubmed: 7851891
Patino GA, Claes LR, Lopez-Santiago LF, Slat EA, Dondeti RS, Chen C, O'Malley HA, Gray CB, Miyazaki H, Nukina N, Oyama F, De Jonghe P, Isom LL: A functional null mutation of SCN1B in a patient with Dravet syndrome. J Neurosci. 2009 Aug 26;29(34):10764-78. doi: 10.1523/JNEUROSCI.2475-09.2009.
Pubmed: 19710327
Baroni D, Picco C, Moran O: A mutation of SCN1B associated with GEFS+ causes functional and maturation defects of the voltage-dependent sodium channel. Hum Mutat. 2018 Oct;39(10):1402-1415. doi: 10.1002/humu.23589. Epub 2018 Jul 30.
Pubmed: 29992740
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