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@ARTICLE{Kunz:139073,
author = {Kunz, Lukas and Reuter, Martin and Axmacher, Nikolai and
Montag, Christian},
title = {{C}onscientiousness is {N}egatively {A}ssociated with
{G}rey {M}atter {V}olume in {Y}oung {APOE} ɛ4-{C}arriers.},
journal = {Journal of Alzheimer's disease},
volume = {56},
number = {3},
issn = {1387-2877},
address = {Amsterdam},
publisher = {IOS Press},
reportid = {DZNE-2020-05395},
pages = {1135-1144},
year = {2017},
abstract = {The etiology of late onset Alzheimer's disease (LOAD)
depends on multiple factors, among which the APOE ɛ4 allele
is the most adverse genetic determinant and
conscientiousness represents an influential personality
trait. A potential association of both factors with brain
structure in young adulthood may constitute a constellation
that sets the course toward or against the subtle disease
progression of LOAD that starts decades before clinical
manifestation. Hence, in the present study, we examined the
modulating effects of APOE ɛ4 on the relation between
personality dimensions, including conscientiousness, and
total grey matter volume (GMV) in young healthy adults using
an a priori genotyping design. 105 participants completed an
inventory assessing the Five Factor Model of Personality
(NEO-FFI) and a structural MRI scan. Total GMV was estimated
using both Freesurfer as well as VBM8. Across all
participants, total GMV was positively associated with
extraversion and negatively related to age. In APOE
ɛ4-carriers- but not in APOE ɛ4-non-carriers-
conscientiousness was negatively associated with total GMV.
In line with the hypothesis of antagonistic pleiotropy of
the APOE ɛ4 allele, this result suggests that young APOE
ɛ4-carriers with increased total GMV may particularly
benefit from cognitive advantages and thus have a lower need
to engage in conscientious behavior. In this subset of young
APOE ɛ4-carriers, the reduction in conscientiousness could
then bring along adverse health behavior in the long run,
potentiating the risk for LOAD. Hence, young APOE
ɛ4-carriers with increased total GMV may be at a
particularly high risk for LOAD.},
keywords = {Apolipoprotein E3: genetics / Apolipoprotein E4: genetics /
Brain: diagnostic imaging / Female / Genotyping Techniques /
Gray Matter: diagnostic imaging / Heterozygote / Humans /
Image Processing, Computer-Assisted / Magnetic Resonance
Imaging / Male / Multivariate Analysis / Organ Size /
Personality: genetics / Self Report / Young Adult /
Apolipoprotein E3 (NLM Chemicals) / Apolipoprotein E4 (NLM
Chemicals)},
cin = {AG Axmacher},
ddc = {610},
cid = {I:(DE-2719)5000027},
pnm = {344 - Clinical and Health Care Research (POF3-344)},
pid = {G:(DE-HGF)POF3-344},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:28106551},
doi = {10.3233/JAD-160854},
url = {https://pub.dzne.de/record/139073},
}