Mesial temporal sclerosis: pathogenesis and significance.

Published

Journal Article (Review)

Mesial temporal sclerosis (MTS) is a common pathologic finding in patients with temporal lobe epilepsy. Rarely MTS can be detected in children during the first decade of life, but is not commonly found until adolescence. Although the etiology of MTS remains controversial, there is now a considerable amount of evidence demonstrating that MTS is both a result and a cause of seizures. Clinical studies suggest that prolonged seizures or complicated febrile seizures may result in MTS. A variety of epileptogenic agents administered to adult animals have resulted in MTS and spontaneous recurrent seizures. The mechanism of the lesions is due to excessive excitability secondary to release of excitatory amino acids, primarily glutamate. Glutamate, acting at a number of subreceptors on the postsynaptic membrane, leads to prolonged depolarization of neurons and results in the entry of cytotoxic amounts of calcium. Interestingly, the same agents that produce MTS in adult animals do not produce MTS in immature animals. Clinical and experimental evidence suggests that although prolonged seizures or complicated febrile seizures can place a child at risk for MTS, a period of time is required for the lesions to develop fully.

Full Text

Duke Authors

Cited Authors

  • Liu, Z; Mikati, M; Holmes, GL

Published Date

  • January 1995

Published In

Volume / Issue

  • 12 / 1

Start / End Page

  • 5 - 16

PubMed ID

  • 7748361

Pubmed Central ID

  • 7748361

Electronic International Standard Serial Number (EISSN)

  • 1873-5150

International Standard Serial Number (ISSN)

  • 0887-8994

Digital Object Identifier (DOI)

  • 10.1016/0887-8994(94)00122-i

Language

  • eng