Differential effects of the ApoE4 genotype on brain structure and function

The apolipoprotein E ε4 allele is a well established genetic risk factor for sporadic Alzheimer's disease. It is associated with structural and functional brain changes in healthy young, middle-aged and elderly subjects. In the current study, we assessed the impact of the ApoE genotype on brain...

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Veröffentlicht in:NeuroImage (Orlando, Fla.) Fla.), 2014-04, Vol.89, p.81-91
Hauptverfasser: Matura, Silke, Prvulovic, David, Jurcoane, Alina, Hartmann, Daniel, Miller, Julia, Scheibe, Monika, O'Dwyer, Laurence, Oertel-Knöchel, Viola, Knöchel, Christian, Reinke, Britta, Karakaya, Tarik, Fußer, Fabian, Pantel, Johannes
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container_title NeuroImage (Orlando, Fla.)
container_volume 89
creator Matura, Silke
Prvulovic, David
Jurcoane, Alina
Hartmann, Daniel
Miller, Julia
Scheibe, Monika
O'Dwyer, Laurence
Oertel-Knöchel, Viola
Knöchel, Christian
Reinke, Britta
Karakaya, Tarik
Fußer, Fabian
Pantel, Johannes
description The apolipoprotein E ε4 allele is a well established genetic risk factor for sporadic Alzheimer's disease. It is associated with structural and functional brain changes in healthy young, middle-aged and elderly subjects. In the current study, we assessed the impact of the ApoE genotype on brain macro- and microstructure, cognitive functioning and brain activity in fifty healthy young subjects (25 ApoE ε4 (ε4+) carriers and 25 non-carriers (ε4−), mean age 26.4±4.6years). We used diffusion tensor imaging (DTI) and voxel based morphometry (VBM) to assess brain structure, an extensive neuropsychological battery to test cognitive functioning and event-related functional magnetic resonance imaging (fMRI) to capture brain activity during episodic memory encoding and retrieval. ApoE ε4 carriers differed from non-carriers in fMRI activations but not in cognitive performance nor in brain micro- and macrostructure. These results suggest functional alterations in the episodic memory network that are modulated by the ε4 allele and might precede clinical or structural neurodegeneration. •We used a multimodal approach to investigate brain structure and function.•There were memory related alterations in neuronal activations in ApoE4 carriers.•No alterations in brain micro- and macrostructure were found in ApoE4 carriers.•Cognitive performance was equal in ApoE4 carriers and noncarriers.
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These results suggest functional alterations in the episodic memory network that are modulated by the ε4 allele and might precede clinical or structural neurodegeneration. •We used a multimodal approach to investigate brain structure and function.•There were memory related alterations in neuronal activations in ApoE4 carriers.•No alterations in brain micro- and macrostructure were found in ApoE4 carriers.•Cognitive performance was equal in ApoE4 carriers and noncarriers.</abstract><cop>Amsterdam</cop><pub>Elsevier Inc</pub><pmid>24296331</pmid><doi>10.1016/j.neuroimage.2013.11.042</doi><tpages>11</tpages></addata></record>
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source MEDLINE; Elsevier ScienceDirect Journals Complete; ProQuest Central UK/Ireland
subjects Adult
Apolipoprotein E4 - genetics
Apolipoprotein4
Biological and medical sciences
Brain
Brain - anatomy & histology
Brain - physiology
Brain Mapping
Cognitive ability
Diffusion Tensor Imaging
DTI
Female
fMRI
Fundamental and applied biological sciences. Psychology
Genotype
Humans
Magnetic Resonance Imaging
Male
Medical imaging
Memory
Memory, Episodic
Neuropsychological Tests
Studies
VBM
Vertebrates: nervous system and sense organs
Young Adult
title Differential effects of the ApoE4 genotype on brain structure and function
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