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Related Concept Videos

Seizures ll: Types01:19

Seizures ll: Types

Seizures are sudden bursts of abnormal electrical discharge in the brain that interfere with normal function. They are commonly divided into three groups: focal seizures, generalized seizures, and other types that do not fit neatly into either category.Focal SeizuresFocal seizures begin in a single brain region. When awareness is preserved, they are called focal aware seizures and may cause sensations such as tingling, unusual smells, or flashing lights. When awareness is impaired, they are...
Seizures l: Introduction01:20

Seizures l: Introduction

Understanding seizures and epilepsy relies on key definitions that help in recognizing, classifying, and managing these disorders. These definitions provide a framework for recognizing, classifying, and managing seizure disorders.DefinitionsA seizure is a sudden, abnormal burst of electrical activity in the brain that can cause changes in awareness, movement, sensation, or behavior, depending on the area involved. Epilepsy is a chronic condition characterized by recurrent, unprovoked seizures,...
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:
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...
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.

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Related Experiment Video

Updated: May 18, 2026

Co-culture of Glutamatergic Neurons and Pediatric High-Grade Glioma Cells Into Microfluidic Devices to Assess Electrical Interactions
07:39

Co-culture of Glutamatergic Neurons and Pediatric High-Grade Glioma Cells Into Microfluidic Devices to Assess Electrical Interactions

Published on: November 17, 2021

Gliomas and seizures.

O Prakash1, W J Lukiw, F Peruzzi

  • 1LSUHSC - Cancer Center, Neurosurgery Department and Neuroscience Center of Excellence, 2020 Gravier St., New Orleans, LA 70112, USA.

Medical Hypotheses
|September 11, 2012
PubMed
Summary
This summary is machine-generated.

Aberrant glial tumor cell metabolism may directly impact neuronal networks, increasing seizure susceptibility. This effect is amplified by tumor growth, leading to recurrent seizures and epileptogenesis in brain tumor patients.

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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

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Last Updated: May 18, 2026

Co-culture of Glutamatergic Neurons and Pediatric High-Grade Glioma Cells Into Microfluidic Devices to Assess Electrical Interactions
07:39

Co-culture of Glutamatergic Neurons and Pediatric High-Grade Glioma Cells Into Microfluidic Devices to Assess Electrical Interactions

Published on: November 17, 2021

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

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

Published on: May 16, 2019

Area of Science:

  • Neuro-oncology
  • Molecular Neurology

Background:

  • Glial neoplasms represent a significant portion of adult primary brain tumors, including astrocytomas and glioblastomas.
  • Glioblastoma multiforme (GBM) is particularly aggressive, marked by rapid growth, treatment resistance, and CNS infiltration.

Purpose of the Study:

  • To explore the hypothesis that aberrant tumor cell metabolism in glial neoplasms directly contributes to neuronal network dysfunction and seizure susceptibility.
  • To elucidate the role of tumor invasion and growth in exacerbating metabolic changes and promoting epileptogenesis.

Main Methods:

  • The study presents a hypothesis based on existing literature regarding glial tumors, their metabolic changes, and associated neurological effects.
  • Analysis of the relationship between tumor characteristics, metabolic alterations, and the incidence of epileptic seizures in patients.

Main Results:

  • Epileptic seizures are highly prevalent in patients with glial tumors, affecting nearly 50% of glioblastoma patients and up to 90% with low-grade astrocytomas.
  • Tumor growth and CNS invasion are linked to molecular and metabolic changes within the tumor microenvironment.

Conclusions:

  • Aberrant glial tumor cell metabolism is proposed as a direct cause of neuronal network alteration, leading to seizure susceptibility.
  • Malignant glial cell invasion and proliferation worsen the condition, promoting recurrent seizures and epileptogenesis.