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Related Concept Videos

Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

236
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...
236
Antiepileptic Drugs: Glutamate Antagonists01:14

Antiepileptic Drugs: Glutamate Antagonists

457
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...
457
Overview of Synapses01:25

Overview of Synapses

2.5K
A synapse is a specialized structure where two neurons connect, allowing them to pass an electrical or chemical signal to another neuron. It is the point of communication between neurons. The term "synapse" is derived from the Greek word "synapsis," which means "conjunction." The entire process of neural communication revolves around the synapse. When activated, a neuron releases chemicals known as neurotransmitters into the synapse. These neurotransmitters cross the synapse and bind to...
2.5K
Antiepileptic Drugs: GABAergic Pathway Potentiators01:18

Antiepileptic Drugs: GABAergic Pathway Potentiators

493
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...
493
Seizures: Classification01:13

Seizures: Classification

503
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:
503
Neural Circuits01:25

Neural Circuits

1.4K
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
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Related Experiment Video

Updated: Aug 8, 2025

Recording and Modulation of Epileptiform Activity in Rodent Brain Slices Coupled to Microelectrode Arrays
10:24

Recording and Modulation of Epileptiform Activity in Rodent Brain Slices Coupled to Microelectrode Arrays

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Astrocyte-neuron circuits in epilepsy.

Benton S Purnell1, Mariana Alves2, Detlev Boison3

  • 1Department of Neurosurgery, Robert Wood Johnson Medical School, Rutgers University, Piscataway, NJ, United States of America.

Neurobiology of Disease
|March 3, 2023
PubMed
Summary
This summary is machine-generated.

Astrocytes, not just neurons, play a critical role in epilepsy development and seizure generation. Understanding astrocyte dysfunction offers new targets for treating drug-resistant epilepsy and related comorbidities.

Keywords:
AdenosineAstrocytesEpilepsyGliaMetabolismTherapy

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Generation and On-Demand Initiation of Acute Ictal Activity in Rodent and Human Tissue
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Multi-electrode Array Recordings of Human Epileptic Postoperative Cortical Tissue
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Last Updated: Aug 8, 2025

Recording and Modulation of Epileptiform Activity in Rodent Brain Slices Coupled to Microelectrode Arrays
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Generation and On-Demand Initiation of Acute Ictal Activity in Rodent and Human Tissue
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Multi-electrode Array Recordings of Human Epileptic Postoperative Cortical Tissue
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Area of Science:

  • Neuroscience
  • Cell Biology
  • Epilepsy Research

Background:

  • Epilepsy is characterized by spontaneous seizures, with current treatments focusing on neuronal function but failing to address pharmacoresistant cases.
  • Understanding epileptogenesis and ictogenesis requires exploring cellular mechanisms beyond neurons.

Approach:

  • This review examines the multifaceted role of astrocytes in epilepsy.
  • It details astrocyte contributions to neuronal activity, blood-brain barrier integrity, and homeostasis.

Key Points:

  • Astrocytes modulate neuronal activity via gliotransmission and the tripartite synapse.
  • In epilepsy, astrocyte functions like glutamate uptake and blood-brain barrier maintenance are impaired.
  • Activated astrocytes contribute to hyperexcitability and epigenetic changes underlying epileptogenesis.

Conclusions:

  • Astrocytes are crucial in epilepsy pathogenesis, impacting neuronal excitability and homeostasis.
  • Dysfunctional astrocytes may explain comorbidities like Alzheimer's disease and sleep disturbances in epilepsy.
  • Targeting astrocyte pathways presents novel therapeutic strategies for epilepsy.