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Related Concept Videos

Antiepileptic Drugs: Sodium Channel Blockers01:08

Antiepileptic Drugs: Sodium Channel Blockers

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.
Among the most commonly prescribed antiepileptic drugs are...
Antiepileptic Drugs: Calcium Channel Blockers01:17

Antiepileptic Drugs: Calcium Channel Blockers

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...
Antiepileptic Drugs: Potassium Channel Activators01:20

Antiepileptic Drugs: Potassium Channel Activators

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.
Ezogabine has gained approval as an adjunctive treatment...
Antiepileptic Drugs: Glutamate Antagonists01:14

Antiepileptic Drugs: Glutamate Antagonists

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...
Antiepileptic Drugs: GABAergic Pathway Potentiators01:18

Antiepileptic Drugs: GABAergic Pathway Potentiators

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.
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for their...
Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein01:20

Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein

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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Related Experiment Video

Updated: Jul 3, 2026

Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice
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Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice

Published on: May 16, 2019

Antiepileptic drugs and thyroid function.

Alberto Verrotti1, Alessandra Scardapane, Rossella Manco

  • 1Department of Pediatrics, University of Chieti, Chieti, Italy.

Journal of Pediatric Endocrinology & Metabolism : JPEM
|July 29, 2008
PubMed
Summary
This summary is machine-generated.

Antiepileptic drugs (AEDs) can impact thyroid function, potentially causing subclinical hypothyroidism and altered thyroid hormone levels. Phenytoin, valproate, and carbamazepine are particularly implicated in these effects.

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Last Updated: Jul 3, 2026

Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice
07:01

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Published on: May 16, 2019

A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function
04:05

A Versatile, Behavioral Method to Investigate Thyroid Hormone Effects on Cerebellar Function

Published on: October 6, 2023

Area of Science:

  • Endocrinology
  • Pharmacology
  • Neurology

Background:

  • Antiepileptic drugs (AEDs) are essential treatments for epilepsy in adults and children.
  • AEDs are associated with diverse adverse effects impacting multiple organ systems and metabolic functions.
  • Thyroid function is particularly susceptible to disruption by certain AEDs.

Purpose of the Study:

  • To critically review the primary alterations in thyroid function induced by antiepileptic drug therapy.
  • To synthesize current literature on AED-related thyroid dysfunction.
  • To highlight specific AEDs implicated in thyroid function changes.

Main Methods:

  • Literature review of studies investigating AEDs and thyroid function.
  • Analysis of reported cases of hypothyroidism and thyroid hormone alterations.
  • Focus on specific AEDs like phenytoin, valproate, and carbamazepine.

Main Results:

  • Subclinical hypothyroidism is a frequently reported adverse effect of AED therapy.
  • Alterations in serum thyroid hormone levels are common in patients on AEDs.
  • Phenytoin, valproate, and carbamazepine are frequently associated with these thyroid disturbances.

Conclusions:

  • AED therapy can significantly impact thyroid function, necessitating monitoring.
  • Clinicians should be aware of the potential for AED-induced hypothyroidism.
  • Further research is needed to elucidate the mechanisms and management of AED-related thyroid dysfunction.