Antiepileptic drugs and neurodevelopment: an update

Susan Palac1, Kimford J Meador

  • 1Department of Neurology, Woodruff Memorial Research Building, Emory University School of Medicine, Atlanta, GA 30322, USA. spalac@emory.edu

Insights

Maternal use of certain antiepileptic drugs (AEDs) during pregnancy, particularly valproate and polytherapy, may increase risks for impaired cognitive development and behavioral issues in children. More research is needed for other AEDs.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Pharmacology

Background:

  • In utero exposure to antiepileptic drugs (AEDs) is a concern for neurodevelopment.
  • Valproate and polytherapy have been specifically linked to adverse neurocognitive outcomes.

Purpose of the Study:

  • To evaluate the association between maternal AED use during pregnancy and neurocognitive development in offspring.
  • To compare risks associated with specific AEDs and polytherapy.

Main Methods:

  • Review of existing literature on maternal AED exposure and child neurodevelopment.
  • Analysis of studies examining cognitive function and behavioral outcomes.

Main Results:

  • Exposure to valproate and polytherapy during pregnancy is associated with an increased risk of cognitive impairment.
  • Behavioral dysfunction, including autistic spectrum disorder, is also linked to maternal AED use.
  • Data for other AEDs are conflicting or insufficient.

Conclusions:

  • Specific AEDs like valproate and polytherapy pose risks to fetal neurodevelopment.
  • Further research is required to clarify risks associated with other AEDs and long-term effects.
  • The impact of childhood AED treatment on neurodevelopment remains undetermined.

Related Concept Videos

Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
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: 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: 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: 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: 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...