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Epilepsy and Seizures: Overview

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: Types

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: Classification

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:

Antiepileptic Drugs: Calcium Channel Blockers

Antiepileptic Drugs: Calcium Channel Blockers

Calcium channel blockers, a class of antiepileptic drugs, regulate the flow of calcium ions within neurons.
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...

Seizures l: Introduction

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,...

Antiepileptic Drugs: GABAergic Pathway Potentiators

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...

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Related Experiment Video

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Network Analysis of Foramen Ovale Electrode Recordings in Drug-resistant Temporal Lobe Epilepsy Patients

Network Analysis of Foramen Ovale Electrode Recordings in Drug-resistant Temporal Lobe Epilepsy Patients

Published on: December 18, 2016

Identifying targets for preventing epilepsy using systems biology.

Jeffrey A Loeb¹

¹Department of Neurology and The Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI 48201, United States. jloeb@med.wayne.edu

Neuroscience Letters

|March 9, 2011

Summary

Current epilepsy drugs only manage seizures, not the underlying cause. New antiepileptic therapeutics targeting epileptogenesis pathways are needed, identified through systems biology approaches and validated in animal models.

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Area of Science:

Neuroscience
Pharmacology
Systems Biology

Background:

Existing anti-seizure medications do not prevent or cure epilepsy.
Epileptogenesis, the process of developing epilepsy, involves distinct molecular pathways requiring novel therapeutics.
Focal epilepsy presents challenges due to diverse brain abnormalities causing chronic seizures.

Purpose of the Study:

To highlight the need for novel antiepileptic therapeutics targeting epileptogenesis.
To discuss the application of systems biology and high-throughput technologies for identifying new drug targets.
To emphasize the importance of validating potential targets in animal models.

Main Methods:

Utilizing systems biology approaches like functional genomics, proteomics, and metabolomics.
Profiling large numbers of molecules simultaneously in human and animal epileptic brain tissues.
Implementing tightly controlled experimental designs to minimize false positives.

Main Results:

Systems biology approaches are beginning to identify new therapeutic targets for epilepsy.
High-throughput methods offer sensitivity but require careful design to avoid misleading results.
Validation in animal models is crucial for confirming the efficacy of identified targets.

Conclusions:

Novel antiepileptic drugs targeting epileptogenesis are essential for treating epilepsy.
Systems biology provides powerful tools for unbiased drug target discovery.
Rigorous validation in preclinical models is critical for translating discoveries into effective human therapeutics.