Asymmetric accumulation of hippocampal 7S SNARE complexes occurs regardless of kindling paradigm

Elena A. Matveeva, Thomas C. Vanaman, Sidney W. Whiteheart, John T. Slevin

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


Modifications of neurotransmission may contribute to the synchronization of neuronal networks that are a hallmark of epileptic seizures. In this study we examine the synaptosomal proteins involved in neurotransmitter release to determine if alterations in their interactions correlate with the chronic epileptic state. Using quantitative western blotting, we measured the levels of 7S SNARE complexes and SNARE effectors in the effected hippocampi from animals that were electrically kindled through stimulation from one of three different foci. All three kindling paradigms, amygdalar, entorhinal, and septal, were associated with an accumulation of 7S SNARE complexes in the ipsilateral hippocampus, measured 1 month after completion of kindling. Of the eight SNARE effectors examined (α-SNAP, NSF, SV2A/B, Munc18a/nSec1, Munc13-1, Complexins 1 and 2, and synaptotagmin I), there was a statistically significant bihemispheric increase of hippocampal SV2 and decrease of NSF upon kindling; neither by itself would be expected to account for the asymmetry of SNARE complex distribution. These data suggest that an ipsilateral hippocampal accumulation of SNARE complexes is a permanent alteration of kindling-induced epilepsy, regardless of stimulation pathway. The significance of these findings toward a molecular understanding of epilepsy will be discussed.

Original languageEnglish
Pages (from-to)266-274
Number of pages9
JournalEpilepsy Research
Issue number3
StatePublished - Mar 2007

Bibliographical note

Funding Information:
We acknowledge the technical assistance of Ramona Alcala and Charlotte Randle. This work is supported by the Department of Veterans Affairs (JTS) and by grants from the National Institutes of Health (HL56652) (SWW).


  • Epilepsy
  • NSF
  • Neurotransmission
  • SV2

ASJC Scopus subject areas

  • Neurology
  • Clinical Neurology


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