title: Neurodevelopmental disruption in early-onset temporal lobe epilepsy: evidence from a voxel-based morphometry study.
abstract: Childhood onset of epilepsy has long been associated with an adverse impact on brain development and cognition. In this study it is proposed that earlier (vs later) onset of temporal lobe epilepsy (TLE) has a negative developmental impact on distant brain structures. One hundred ten patients with TLE were assigned to early (≤14 years, N=58) and late (>15 years, N=52) age at onset of epilepsy groups. Voxel-based morphometry revealed onset-dependent abnormalities (in terms of a gray matter excess in the early-onset group), which were found mainly in frontal regions. An excess of gray matter is not a usual finding in TLE. However, within a neurodevelopmental framework, retained gray matter is discussed as reflecting neurodevelopmental disruption. The findings indicate the importance of quantitative MRI for the detection of subtle secondary abnormalities in focal TLE and once more underline the importance of early seizure management in children with intractable TLE.
authors: Department of Neurosurgery, University of Bonn, Bonn, Germany.
authors: Sabine
authors: S
authors: Kaaden
authors: Carlos M
authors: CM
authors: Quesada
authors: Horst
authors: H
authors: Urbach
authors: Roy
authors: R
authors: Koenig
authors: Bernd
authors: B
authors: Weber
authors: Johannes
authors: J
authors: Schramm
authors: Georg
authors: G
authors: Rudinger
authors: Christoph
authors: C
authors: Helmstaedter
mesh_terms: D000328:Adult; D017668:Age of Onset; D001921:Brain / Q000254:growth & development / Q000473:pathology*; D001931:Brain Mapping; D003072:Cognition Disorders / Q000209:etiology*; D002658:Developmental Disabilities / Q000209:etiology*; D004833:Epilepsy, Temporal Lobe / Q000150:complications* / Q000473:pathology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests