Voltage Gated Sodium (Nav) Channel Neurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Voltage-Gated Sodium (NaV) Channel Neurons are neurons expressing NaV channels, which generate the rapid depolarizing phase of action potentials. These channels are essential for neuronal excitability and signal propagation.
NaV channels in:
- NaV1.1 (SCN1A): GABAergic interneurons
- NaV1.2 (SCN2A): Pyramidal neurons, axons
- NaV1.3 (SCN3A): Developing neurons
- NaV1.6 (SCN8A): Nodes of Ranvier, soma
- NaV1.7 (SCN9A): Peripheral sensory
- α subunit: 24 transmembrane segments (4 domains)
- β subunits: 1-4, auxiliary
- Activation: Depolarization
- Fast inactivation: Intracellular gate
- Slow inactivation: Prolonged depolarization
- Action potential initiation: NaV1.6 at AIS
- Propagation: Saltatory conduction
- Refractory period: Inactivation
- Excitability: Channel density determines threshold
- SCN1A mutations cause Dravet syndrome
- SCN2A mutations in infantile seizures
- Sodium channel blockers
- SCN1A, SCN2A in familial hemiplegic migraine
- Channel dysfunction
- SCN9A in pain disorders
- NaV1.7, 1.8, 1.9 targets
- Analgesic development
- NaV1.6 alterations in ALS
- Excitotoxicity
The study of Voltage Gated Sodium (Nav) Channel Neurons has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
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- Waxman SG, et al. (2017). Sodium channels in neurobiology. Brain.
- Yu FH, et al. (2006). Sodium channel diversity. Neuroscientist.
- Zholos A, et al. (2019). Sodium channel structure. Journal of Molecular Neuroscience.