Abstract
Although approximately 1% of the human population suffers from epilepsy, the cellular basis of this disease remains largely unresolved, and about 30% of all epilepsies are refractory to therapies using currently available drugs. Until recently, synchronous neuronal activity during seizures has been thought to be, entirely of neuronal origin, and the main stream of epilepsy research has focused on changes in membrane properties of neurons and on classical chemical neurotransmission between them. However, recent discoveries about neuron-astrocyte bidirectional communication strongly challenge this concept. These functions of astrocyte are proving significant in the understanding of epilepsy, stroke and many other neurological diseases. In addition, the most important function reported for gap junctional communication in the nervous system is the increased synchronous activity of the coupled cells. Based on the emergent evidence, it is likely that gap junctional communication plays a definite role in the associated neuronal/astrocytic networks being involved in the generation and propagation of seizure discharges in the epileptic brain. Therefore astrocytes and gap junctions as potentially new cellular targets may open new perspectives for targeted molecular therapeutic interventions and allow the development of new antiepileptic as well as anticonvulsant drugs.
Keywords: Astrocytes, anticonvulsant drugs, antiepileptic drugs, gap junctions, epilepsy
Current Signal Transduction Therapy
Title: Possible Exploitation of Non-Neuronal and Non-Chemical Synaptic Signalling Pathways in Epilepsy Therapy
Volume: 3 Issue: 3
Author(s): Magdolna Szente
Affiliation:
Keywords: Astrocytes, anticonvulsant drugs, antiepileptic drugs, gap junctions, epilepsy
Abstract: Although approximately 1% of the human population suffers from epilepsy, the cellular basis of this disease remains largely unresolved, and about 30% of all epilepsies are refractory to therapies using currently available drugs. Until recently, synchronous neuronal activity during seizures has been thought to be, entirely of neuronal origin, and the main stream of epilepsy research has focused on changes in membrane properties of neurons and on classical chemical neurotransmission between them. However, recent discoveries about neuron-astrocyte bidirectional communication strongly challenge this concept. These functions of astrocyte are proving significant in the understanding of epilepsy, stroke and many other neurological diseases. In addition, the most important function reported for gap junctional communication in the nervous system is the increased synchronous activity of the coupled cells. Based on the emergent evidence, it is likely that gap junctional communication plays a definite role in the associated neuronal/astrocytic networks being involved in the generation and propagation of seizure discharges in the epileptic brain. Therefore astrocytes and gap junctions as potentially new cellular targets may open new perspectives for targeted molecular therapeutic interventions and allow the development of new antiepileptic as well as anticonvulsant drugs.
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Szente Magdolna, Possible Exploitation of Non-Neuronal and Non-Chemical Synaptic Signalling Pathways in Epilepsy Therapy, Current Signal Transduction Therapy 2008; 3 (3) . https://dx.doi.org/10.2174/157436208785699677
DOI https://dx.doi.org/10.2174/157436208785699677 |
Print ISSN 1574-3624 |
Publisher Name Bentham Science Publisher |
Online ISSN 2212-389X |
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