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Title

Less agreeable, better preserved? A PET amyloid and MRI study in a community-based cohort
Authors
Giannakopoulos, Panteleimon
Rodriguez, Cristelle
Montandon Zaidi, Marie-Louise
Garibotto, Valentina
Haller, Sven
Herrmann, François
Published in Neurobiology of aging. 2020, vol. 89, p. 24-31
Abstract The relationship between personality profiles and brain integrity in old age is still a matter of debate. We examined the association between Big Five factor and facet scores and MRI brain volume changes on a 54-month follow-up in 65 elderly controls with 3 neurocognitive assessments (baseline, 18 months, and 54 months), structural brain MRI (baseline and 54 months), brain amyloid PET during follow-up, and APOE genotyping. Personality was assessed with the Neuroticism Extraversion Openness Personality Inventory-Revised. Regression models were used to identify predictors of volume loss including time, age, sex, personality, amyloid load, presence of APOE ε4 allele, and cognitive evolution. Lower agreeableness factor scores (and 4 of its facets) were associated with lower volume loss in the hippocampus, entorhinal cortex, amygdala, mesial temporal lobe, and precuneus bilaterally. Higher openness factor scores (and 2 of its facets) were also associated with lower volume loss in the left hippocampus. Our findings persisted when adjusting for confounders in multivariable models. These data suggest that the combination of low agreeableness and high openness is an independent predictor of better preservation of brain volume in areas vulnerable to neurodegeneration.
Keywords Aged — Aged, 80 and over — Amyloidogenic Proteins/metabolism — Apolipoproteins E/genetics — Brain/diagnostic imaging/pathology — Cognition — Cohort Studies — Female — Follow-Up Studies — Humans — Magnetic Resonance Imaging — Male — Neuroimaging — Organ Size — Personality — Positron-Emission Tomography
Identifiers
PMID: 32169357
Full text
Article (Published version) (364 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Supplemental data (45 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: https://www.sciencedirect.com/science/article/pii/S0197458020300312
Structures
Faculté de médecine / Section de médecine clinique / Département de psychiatrie
Faculté de médecine / Section de médecine clinique / Département de radiologie et informatique médicale
Faculté de médecine / Section de médecine clinique / Département de réadaptation et gériatrie
Research groups Groupe Giannakopoulos Panteleimon (psychiatrie générale) (201)
Imagerie per-opératoire multi-modalité en radiologie interventionnelle (949)
Project
Swiss National Science Foundation: 320030_169390
Citation
(ISO format) 		GIANNAKOPOULOS, Panteleimon et al. Less agreeable, better preserved? A PET amyloid and MRI study in a community-based cohort. In: Neurobiology of Aging, 2020, vol. 89, p. 24-31. doi: 10.1016/j.neurobiolaging.2020.02.004 https://archive-ouverte.unige.ch/unige:146829

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Deposited on : 2020-12-18

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