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Altered Structural Network in Newly Onset Childhood Absence Epilepsy

Journal of Clinical Neurology 2020년 16권 4호 p.573 ~ 580
김은희, 심우현, 이진성, 윤희망, 고태성, 염미선,
소속 상세정보
김은희 ( Kim Eun-Hee ) - CHA University CHA Gangnam Medical Center Department of Pediatrics
심우현 ( Shim Woo-Hyun ) - University of Ulsan College of Medicine Asan Medical Center Department of Radiology
이진성 ( Lee Jin-Seong ) - University of Ulsan College of Medicine Asan Medical Center Department of Radiology
윤희망 ( Yoon Hee-Mang ) - University of Ulsan College of Medicine Asan Medical Center Department of Radiology
고태성 ( Ko Tae-Sung ) - University of Ulsan College of Medicine Asan Medical Center Children’s Hospital Department of Pediatrics
염미선 ( Yum Mi-Sun ) - University of Ulsan College of Medicine Asan Medical Center Children’s Hospital Department of Pediatrics

Abstract


Background and Purpose: Recent quantitative neuroimaging studies of childhood absence epilepsy (CAE) have identified various structural abnormalities that might be involved in the onset of absence seizure and associated cognitive and behavioral functions. However, the neuroanatomical alterations specific to CAE remain unclear, and so this study investigated the regional alterations of brain structures associated with newly diagnosed CAE.

Methods: Surface and volumetric magnetic resonance imaging data of patients with newly diagnosed CAE (n=18) and age-matched healthy controls (n=18) were analyzed using Free-Surfer software. A group comparison using analysis of covariance was performed with significance criteria of p<0.05 and p<0.01 in global and regional analyses, respectively.

Results: Compared with control subjects, the patients with CAE had smaller total and regional volumes of cortical gray-matter (GM) in the right rostral middle frontal, right lateral orbitofrontal, and left rostral middle frontal regions, as well as in the right precentral, right superior, middle, left middle, and inferior temporal gyri. The cortex in the right posterior cingulate gyrus and left medial occipital region was significantly thicker in patients with CAE than in controls.

Conclusions: Patients with CAE showed a reduced bilateral frontotemporal cortical GM volume and an increased posterior medial cortical thickness, which are associated with the default mode network. These structural changes can be suggested as the neural basis of the absence seizures and neuropsychiatric comorbidities in CAE.

키워드

absence epilepsy; magnetic resonance imaging; cerebral cortex; gray matter

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