Tract Based Spatial Statistic Reveals No Differences in White Matter Microstructural Organization between Carriers and Non-Carriers of the APOE ɛ4 and ɛ2 Alleles in Young Healthy Adolescents
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Tract Based Spatial Statistic Reveals No Differences in White Matter Microstructural Organization between Carriers and Non-Carriers of the APOE ɛ4 and ɛ2 Alleles in Young Healthy Adolescents. / Dell'Acqua, Flavio; Khan, Wasim; Gottlieb, Natalie; Giampietro, Vincent; Ginestet, Cedric; Bouls, David; Newhouse, Steven; Dobson, Richard; Banaschewski, Tobias; Barker, Gareth J; Bokde, Arun L W; Büchel, Christian; Conrod, Patricia; Flor, Herta; Frouin, Vincent; Garavan, Hugh; Gowland, Penny; Heinz, Anreas; Lemaítre, Hervé; Nees, Frauke; Paus, Tomas; Pausova, Zdenka; Rietschel, Marcella; Smolka, Michael N; Ströhle, Andreas; Gallinat, Jean; Westman, Eric; Schumann, Gunther; Lovestone, Simon; Simmons, Andrew.
in: J ALZHEIMERS DIS, Jahrgang 47, Nr. 4, 11.08.2015, S. 977-84.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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T1 - Tract Based Spatial Statistic Reveals No Differences in White Matter Microstructural Organization between Carriers and Non-Carriers of the APOE ɛ4 and ɛ2 Alleles in Young Healthy Adolescents
AU - Dell'Acqua, Flavio
AU - Khan, Wasim
AU - Gottlieb, Natalie
AU - Giampietro, Vincent
AU - Ginestet, Cedric
AU - Bouls, David
AU - Newhouse, Steven
AU - Dobson, Richard
AU - Banaschewski, Tobias
AU - Barker, Gareth J
AU - Bokde, Arun L W
AU - Büchel, Christian
AU - Conrod, Patricia
AU - Flor, Herta
AU - Frouin, Vincent
AU - Garavan, Hugh
AU - Gowland, Penny
AU - Heinz, Anreas
AU - Lemaítre, Hervé
AU - Nees, Frauke
AU - Paus, Tomas
AU - Pausova, Zdenka
AU - Rietschel, Marcella
AU - Smolka, Michael N
AU - Ströhle, Andreas
AU - Gallinat, Jean
AU - Westman, Eric
AU - Schumann, Gunther
AU - Lovestone, Simon
AU - Simmons, Andrew
PY - 2015/8/11
Y1 - 2015/8/11
N2 - The apolipoprotein E (APOE) ɛ4 allele is the best established genetic risk factor for Alzheimer's disease (AD) and has been previously associated with alterations in structural gray matter and changes in functional brain activity in healthy middle-aged individuals and older non-demented subjects. In order to determine the neural mechanism by which APOE polymorphisms affect white matter (WM) structure, we investigated the diffusion characteristics of WM tracts in carriers and non-carriers of the APOE ɛ4 and ɛ2 alleles using an unbiased whole brain analysis technique (Tract Based Spatial Statistics) in a healthy young adolescent (14 years) cohort. A large sample of healthy young adolescents (n = 575) were selected from the European neuroimaging-genetics IMAGEN study with available APOE status and accompanying diffusion imaging data. MR Diffusion data was acquired on 3T systems using 32 diffusion-weighted (DW) directions and 4 non-DW volumes (b-value = 1,300 s/mm2 and isotropic resolution of 2.4×2.4×2.4 mm). No significant differences in WM structure were found in diffusion indices between carriers and non-carriers of the APOE ɛ4 and ɛ2 alleles, and dose-dependent effects of these variants were not established, suggesting that differences in WM structure are not modulated by the APOE polymorphism. In conclusion, our results suggest that microstructural properties of WM structure are not associated with the APOE ɛ4 and ɛ2 alleles in young adolescence, suggesting that the neural effects of these variants are not evident in 14-year-olds and may only develop later in life.
AB - The apolipoprotein E (APOE) ɛ4 allele is the best established genetic risk factor for Alzheimer's disease (AD) and has been previously associated with alterations in structural gray matter and changes in functional brain activity in healthy middle-aged individuals and older non-demented subjects. In order to determine the neural mechanism by which APOE polymorphisms affect white matter (WM) structure, we investigated the diffusion characteristics of WM tracts in carriers and non-carriers of the APOE ɛ4 and ɛ2 alleles using an unbiased whole brain analysis technique (Tract Based Spatial Statistics) in a healthy young adolescent (14 years) cohort. A large sample of healthy young adolescents (n = 575) were selected from the European neuroimaging-genetics IMAGEN study with available APOE status and accompanying diffusion imaging data. MR Diffusion data was acquired on 3T systems using 32 diffusion-weighted (DW) directions and 4 non-DW volumes (b-value = 1,300 s/mm2 and isotropic resolution of 2.4×2.4×2.4 mm). No significant differences in WM structure were found in diffusion indices between carriers and non-carriers of the APOE ɛ4 and ɛ2 alleles, and dose-dependent effects of these variants were not established, suggesting that differences in WM structure are not modulated by the APOE polymorphism. In conclusion, our results suggest that microstructural properties of WM structure are not associated with the APOE ɛ4 and ɛ2 alleles in young adolescence, suggesting that the neural effects of these variants are not evident in 14-year-olds and may only develop later in life.
U2 - 10.3233/JAD-140519
DO - 10.3233/JAD-140519
M3 - SCORING: Journal article
C2 - 26401776
VL - 47
SP - 977
EP - 984
JO - J ALZHEIMERS DIS
JF - J ALZHEIMERS DIS
SN - 1387-2877
IS - 4
ER -