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Related Concept Videos

Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

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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...
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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: Potassium Channel Activators01:20

Antiepileptic Drugs: Potassium Channel Activators

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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.
Ezogabine has gained approval as an adjunctive treatment...
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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.
The key GABA pathway potentiators used in epilepsy management are as follows.
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Antiepileptic Drugs: Sodium Channel Blockers01:08

Antiepileptic Drugs: Sodium Channel Blockers

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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.
Among the most commonly prescribed antiepileptic drugs are...
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Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence01:22

Pharmaceutical Alternatives: Stability-Related Therapeutic Nonequivalence

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Generic intravenous (IV) drugs are considered bioequivalent to their branded counterparts due to their 100% bioavailability upon administration. However, variations in stability among different drug products can significantly influence their therapeutic performance, even if they are pharmaceutically equivalent.Cefuroxime, a prophylactic antimicrobial, is often used as a single-dose IV injection for patients undergoing coronary artery bypass grafting surgery. A 3 g dose typically provides...
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Related Experiment Video

Updated: Jan 7, 2026

Generation and On-Demand Initiation of Acute Ictal Activity in Rodent and Human Tissue
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Does Missing Medication Acutely Change Seizure Risk? A Prospective Study.

Daniel M Goldenholz1,2, Joshua C Cheng1,2, Chi-Yuan Chang1,2

  • 1Department of Neurology, Harvard Medical School, Boston, MA.

Annals of Neurology
|January 5, 2026
PubMed
Summary
This summary is machine-generated.

Occasional missed anti-seizure medication (ASM) doses did not increase short-term seizure risk in people with drug-resistant epilepsy. Sustained nonadherence remains a concern, but brief lapses are unlikely to trigger acute seizures.

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Author Spotlight: Obtaining High-Quality CSF and Blood Samples for Epilepsy Biomarker Discovery
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Author Spotlight: Obtaining High-Quality CSF and Blood Samples for Epilepsy Biomarker Discovery

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Area of Science:

  • Neurology
  • Pharmacology

Background:

  • Drug-resistant epilepsy affects many individuals, necessitating effective management strategies.
  • Adherence to anti-seizure medications (ASMs) is crucial for seizure control.
  • The impact of occasional missed ASM doses on short-term seizure risk is not well-established.

Purpose of the Study:

  • To investigate whether missing individual doses of ASMs increases short-term seizure risk in patients with drug-resistant epilepsy.

Main Methods:

  • A prospective, community-based cohort study involving adults with drug-resistant epilepsy.
  • Participants recorded seizures and ASM intake via smartphone applications for 10 months.
  • Analysis included individual-level modeling and group-level mixed-effects modeling using a 90-day moving average ('Napkin method').

Main Results:

  • Twenty-seven participants contributed 7,853 person-days of data.
  • Individual analysis revealed a weak relationship between ASM adherence and seizure occurrence in most participants.
  • Group-level analysis indicated seizure occurrence was strongly linked to the 'Napkin method' forecast, not ASM adherence.

Conclusions:

  • Occasional missed ASM doses did not significantly elevate immediate seizure risk in individuals with frequent, drug-resistant epilepsy.
  • Clinicians can reassure patients that infrequent lapses in ASM adherence are unlikely to cause acute seizures.
  • Emphasis on overall adherence remains important for long-term seizure control in epilepsy management.