PMID- 33236643 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240216 IS - 1535-7597 (Print) IS - 1535-7511 (Electronic) IS - 1535-7511 (Linking) VI - 21 IP - 1 DP - 2021 Jan-Feb TI - The Role of the Persistent Sodium Current in Epilepsy. PG - 40-47 LID - 10.1177/1535759720973978 [doi] AB - Voltage-gated sodium channels (VGSCs) are foundational to excitable cell function: Their coordinated passage of sodium ions into the cell is critical for the generation and propagation of action potentials throughout the nervous system. The classical paradigm of action potential physiology states that sodium passes through the membrane only transiently (1-2 milliseconds), before the channels inactivate and cease to conduct sodium ions. However, in reality, a small fraction of the total sodium current (1%-2%) remains at steady state despite prolonged depolarization. While this persistent sodium current (I(NaP)) contributes to normal physiological functioning of neurons, accumulating evidence indicates a particularly pathogenic role for an elevated I(NaP) in epilepsy (reviewed previously(1)). Due to significant advances over the past decade of epilepsy research concerning the importance of I(NaP) in sodium channelopathies, this review seeks to summarize recent evidence and highlight promising novel anti-seizure medication strategies through preferentially targeting I(NaP). FAU - Wengert, Eric R AU - Wengert ER AD - Department of Anesthesiology, 12350University of Virginia Health System, Charlottesville, VA, USA. AD - Neuroscience Graduate Program, 12350University of Virginia, Charlottesville, VA, USA. FAU - Patel, Manoj K AU - Patel MK AUID- ORCID: 0000-0003-3591-6716 AD - Department of Anesthesiology, 12350University of Virginia Health System, Charlottesville, VA, USA. AD - Neuroscience Graduate Program, 12350University of Virginia, Charlottesville, VA, USA. LA - eng GR - F31 NS115451/NS/NINDS NIH HHS/United States GR - R01 NS103090/NS/NINDS NIH HHS/United States PT - Journal Article DEP - 20201125 PL - United States TA - Epilepsy Curr JT - Epilepsy currents JID - 101135954 PMC - PMC7863310 OTO - NOTNLM OT - anti-seizure medication OT - channelopathy OT - epilepsy OT - epileptic encephalopathy OT - persistent sodium current OT - voltage-gated sodium channels COIS- Declaration of Conflicting Interests: The author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: The authors declare the following potential conflict of interest with respect to the research, authorship, and/or publication of this article. M.K.P. has received prior research funding from Praxis Precision Medicines EDAT- 2020/11/26 06:00 MHDA- 2020/11/26 06:01 PMCR- 2020/11/25 CRDT- 2020/11/25 08:36 PHST- 2020/11/26 06:00 [pubmed] PHST- 2020/11/26 06:01 [medline] PHST- 2020/11/25 08:36 [entrez] PHST- 2020/11/25 00:00 [pmc-release] AID - 10.1177_1535759720973978 [pii] AID - 10.1177/1535759720973978 [doi] PST - ppublish SO - Epilepsy Curr. 2021 Jan-Feb;21(1):40-47. doi: 10.1177/1535759720973978. Epub 2020 Nov 25.