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Related Concept Videos

Antiepileptic Drugs: Glutamate Antagonists01:14

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Glutamate is a fundamental neurotransmitter in the central nervous system, playing a vital role in neuronal communication and various cognitive processes. Glutamate stands as the principal excitatory neurotransmitter in the brain. Its presence is crucial for the communication between neurons, underpinning essential processes such as synaptic transmission, neuronal excitability, and plasticity. These functions are vital for higher-order cognitive processes, including learning and memory. The...
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Antiepileptic Drugs: Sodium Channel Blockers01:08

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Antiepileptic drugs are specialized medications that prevent seizures in individuals diagnosed with epilepsy. These drugs primarily function by blocking the movement of sodium ions through channels in the neuronal membrane, inhibiting the repetitive firing of action potentials often associated with seizures.
Sodium channel blockers modulate ion channels, particularly voltage-gated sodium channels. They block only sodium ion movement.
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Antiepileptic Drugs: GABAergic Pathway Potentiators01:18

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γ-aminobutyric acid or GABA, plays a pivotal role as an inhibitory neurotransmitter in the brain. GABA pathway potentiators, also known as GABAergic drugs, are a class of pharmaceutical agents designed to enhance the functioning of the GABAergic system. These medications primarily treat epilepsy, a neurological disorder characterized by recurrent seizures.
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Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein01:20

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Antiepileptic drugs, such as levetiracetam (Keppra) and brivaracetam (Briviact), have emerged as crucial tools in managing epilepsy. These medications exert their therapeutic effects by targeting the synaptic vesicle protein SV2A, a transmembrane glycoprotein primarily found in the brain.
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...
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Antiepileptic Drugs: Calcium Channel Blockers01:17

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Calcium channel blockers, a class of antiepileptic drugs, regulate the flow of calcium ions within neurons.
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...
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Antiepileptic Drugs: Potassium Channel Activators01:20

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Ezocgabine or retigabine, an antiepileptic drug of remarkable efficacy, has revolutionized the management of seizures. It is a potassium channel activator, explicitly targeting the family of Q subtype potassium channels. It enhances the transmembrane potassium currents, regulating neuronal excitability. This action stabilizes the resting membrane potential, a pivotal factor in mitigating the hyperexcitability that characterizes epilepsy.
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Related Experiment Video

Updated: May 3, 2026

A High-throughput Calcium-flux Assay to Study NMDA-receptors with Sensitivity to Glycine/D-serine and Glutamate
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NMDA antagonists for refractory seizures.

F A Zeiler1, J Teitelbaum, L M Gillman

  • 1Section of Neurosurgery, Department of Surgery, University of Manitoba, Winnipeg, MB, Canada, umzeiler@cc.umanitoba.ca.

Neurocritical Care
|February 13, 2014
PubMed
Summary
This summary is machine-generated.

Ketamine, an N-methyl D-aspartate (NMDA) receptor antagonist, shows promise in controlling refractory status epilepticus (RSE). Evidence suggests efficacy in both adult and pediatric patients, though further research is needed.

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Area of Science:

  • Neuroscience
  • Pharmacology
  • Critical Care Medicine

Background:

  • Refractory status epilepticus (RSE) presents a significant therapeutic challenge.
  • Novel treatments are continuously being explored for RSE management.

Purpose of the Study:

  • To systematically review the effectiveness of N-methyl D-aspartate (NMDA) receptor antagonists in controlling RSE.
  • To assess adverse effects and patient outcomes associated with NMDA antagonist use.

Main Methods:

  • A comprehensive systematic literature review was conducted across multiple databases.
  • Studies involving NMDA receptor antagonists for human RSE treatment were identified and analyzed.
  • Evidence strength was evaluated using Oxford and GRADE methodologies.

Main Results:

  • All reviewed studies (23 articles) utilized ketamine, an NMDA receptor antagonist, for RSE control.
  • Ketamine demonstrated electroencephalogram seizure response in 56.5% of adults and 63.5% of pediatric patients.
  • Adverse events associated with ketamine were infrequent, but patient outcomes were often poorly documented.

Conclusions:

  • Current evidence (Oxford level 4, GRADE C) supports ketamine's use for RSE in adults and pediatrics.
  • Further prospective studies are warranted to investigate early ketamine administration in RSE.