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A meta-analysis of voxel-based morphometry studies on gray matter volume alteration in juvenile myoclonic epilepsy

Bei Cao1, Yingying Tang, Jianpeng Li

  • 1Department of Neurology, West China Hospital, SiChuan University, 610041 Chengdu, Sichuan, China.

Epilepsy Research
|August 22, 2013
PubMed

Insights

This study quantitatively analyzed gray matter volume (GMV) changes in juvenile myoclonic epilepsy (JME). Consistent GMV increases were found in the frontal regions, while decreases were observed in the thalamus, suggesting thalamocortical circuit involvement.

Area of Science:

  • Neuroimaging
  • Epilepsy Research
  • Neuroscience

Background:

  • Previous voxel-based morphometry (VBM) studies on gray matter volume (GMV) in juvenile myoclonic epilepsy (JME) yielded inconsistent findings.
  • Understanding consistent structural brain changes in JME is crucial for elucidating its pathogenesis.

Purpose of the Study:

  • To quantitatively evaluate consistent gray matter volume changes in patients with JME compared to healthy controls.
  • To identify specific brain regions affected by GMV alterations in JME through a systematic meta-analysis.

Main Methods:

  • Conducted a systematic review of VBM studies on GMV in JME and healthy controls (HC) published between January 1990 and June 2012.
  • Extracted coordinates of significant GMV differences from included studies.
  • Performed a meta-analysis using Effect Size Signed Differential Mapping (ES-SDM) on data from seven studies involving 211 JME patients and 241 HC subjects.

Main Results:

  • Meta-analysis revealed increased GMV in the bilateral medial frontal gyrus and anterior cingulate in JME patients.
  • Conversely, decreased GMV was observed in the bilateral thalamus of JME patients.
  • Sensitivity analyses (jackknife) confirmed the robustness of these findings.

Conclusions:

  • This meta-analysis identified consistent gray matter alterations in specific brain regions in patients with JME.
  • The findings support the involvement of thalamocortical circuitry in the underlying pathogenesis of juvenile myoclonic epilepsy.
Keywords:
Gray matter volumeJuvenile myoclonic epilepsyVoxel-based morphometry

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