N-methyl-D-aspartate receptor and voltage-gated sodium channels (NMDAR + VGSC)

The N-methyl-D-aspartate (NMDA) receptor and voltage-gated sodium channels (VGSCs) are distinct classes of ion channels that play fundamental roles in neuronal excitability and synaptic transmission. The NMDA receptor is a glutamate-gated cation channel that mediates the slow component of excitatory synaptic transmission and is crucial for long-term potentiation and memory formation [1: https://www.ncbi.nlm.nih.gov/books/NBK526134/]. Voltage-gated sodium channels are responsible for the rapid upstroke of the action potential, allowing for the propagation of electrical signals along axons [2: https://www.ncbi.nlm.nih.gov/books/NBK540972/]. In various pathological states, such as epilepsy, stroke, and chronic pain, overactivation of these channels leads to neuronal hyperexcitability and excitotoxicity [3: https://pubmed.ncbi.nlm.nih.gov/11511381/]. Pharmacological agents that target both NMDA receptors and VGSCs, such as lamotrigine and riluzole, are used to stabilize neuronal membranes and prevent excessive glutamate release or post-synaptic activation [4: https://pubchem.ncbi.nlm.nih.gov/compound/Lamotrigine, 5: https://pubmed.ncbi.nlm.nih.gov/11511381/]. This dual mechanism is particularly effective in treating refractory seizures and providing neuroprotection, although it requires careful management of side effects like dizziness and cognitive slowing [6: https://pubmed.ncbi.nlm.nih.gov/24552133/].

Other names

Glutamate [NMDA] receptor and NaV channelsNMDAR and voltage-dependent sodium channels

Dual inhibition of excitatory neurotransmission via NMDA receptor antagonism and stabilization of neuronal membranes through voltage-gated sodium channel blockade.