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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...
Epilepsy ll: Types01:22

Epilepsy ll: Types

Recurrent seizures, stemming from abnormal electrical activity in the brain, are the defining characteristic of epilepsy, a chronic neurological condition. Because seizure features vary greatly, epilepsy is classified using two systems: by seizure type and by epilepsy syndromes. These classifications enable clinicians to describe seizure patterns and select suitable treatment strategies.I. Classification by Seizure Type1. Focal EpilepsyFocal epilepsy begins in one hemisphere of the brain.
Seizures: Classification01:13

Seizures: Classification

Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
Human Genetics01:28

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
Incomplete Dominance01:43

Incomplete Dominance

Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses a challenge in...

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Related Experiment Video

Updated: May 13, 2026

Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons
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Pediatric epilepsy genetics.

Massimo Pandolfo1

  • 1Department of Neurology, Université Libre de Bruxelles, Hôpital Erasme, Brussels, Belgium. massimo.pandolfo@ulb.ac.be

Current Opinion in Neurology
|March 2, 2013
PubMed
Summary

Primary genetic epilepsies in children are linked to specific gene defects. Advances in genetic sequencing reveal mutations affecting neuronal function, aiding diagnosis and treatment development.

Area of Science:

  • Neuroscience
  • Genetics
  • Pediatric Neurology

Background:

  • Childhood genetic epilepsies are complex disorders with diverse causes and features.
  • This review concentrates on primary genetic epilepsies, excluding those from metabolic, chromosomal, or developmental abnormalities.
  • These conditions can present with neuropsychiatric comorbidities but typically lack gross brain pathology or metabolic issues.

Purpose of the Study:

  • To review primary genetic epilepsies in childhood.
  • To highlight the role of genetic mutations in these disorders.
  • To discuss associated comorbidities and implications for diagnosis and treatment.

Main Methods:

  • Review of current literature on genetic epilepsies.
  • Focus on high-throughput DNA sequencing and copy number variant detection.

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A Novel Strategy Combining Array-CGH, Whole-exome Sequencing and In Utero Electroporation in Rodents to Identify Causative Genes for Brain Malformations

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Last Updated: May 13, 2026

Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons
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  • Analysis of gene mutations impacting neuronal function.

    • Main Results:

    • High-throughput genetic approaches are identifying numerous mutations in genes crucial for neuronal excitability, synaptic transmission, metabolism, and network development.
    • Distinct clinical syndromes of pediatric genetic epilepsy are being linked to specific genetic defects.
    • Identified mutations can be de novo or inherited with variable penetrance and expressivity.

    Conclusions:

    • Understanding the genetic basis of pediatric epilepsy is crucial for improving diagnosis and treatment.
    • Genetic defects can lead to epilepsy, intellectual disability, autism spectrum disorders, psychiatric conditions, and motor impairments.
    • These comorbidities can result from uncontrolled seizures or be direct consequences of genetic brain dysfunction.