Changes in gamma-aminobutyric acid and somatostatin in epileptic cortex associated with low-grade gliomas.

Journal Article (Journal Article)

The role of specific neuronal populations in epileptic foci was studied by comparing epileptic and non-epileptic cortex removed from patients with low-grade gliomas. Epileptic and nearby (within 1 to 2 cm) non-epileptic temporal lobe neocortex was identified using electrocorticography. Cortical specimens taken from four patients identified as epileptic and nonepileptic were all void of tumor infiltration. Somatostatin- and gamma-aminobutyric acid (GABAergic)-immunoreactive neurons were identified and counted. Although there was no significant difference in the overall cell count, the authors found a significant decrease in both somatostatin- and GABAergic-immunoreactive neurons (74% and 51%, respectively) in the epileptic cortex compared to that in nonepileptic cortex from the same patient. It is suggested that these findings demonstrate changes in neuronal subpopulations that may account for the onset and propagation of epileptiform activity in patients with low-grade gliomas.

Full Text

Duke Authors

Cited Authors

  • Haglund, MM; Berger, MS; Kunkel, DD; Franck, JE; Ghatan, S; Ojemann, GA

Published Date

  • August 1992

Published In

Volume / Issue

  • 77 / 2

Start / End Page

  • 209 - 216

PubMed ID

  • 1352540

International Standard Serial Number (ISSN)

  • 0022-3085

Digital Object Identifier (DOI)

  • 10.3171/jns.1992.77.2.0209


  • eng

Conference Location

  • United States