Cortical 11C-PIB Uptake is Associated with Age, APOE Genotype, and Gender in "Healthy Aging"

Noora M Scheinin, Kristina Wikman, Antti Jula, Markus Perola, Tero Vahlberg, Johanna Rokka, Kjell Någren, Matti Viitanen, Juha O Rinne

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Background/Objective: Our aim was to elucidate factors that contribute to amyloid-β (Aβ) accumulation in the brains of the seemingly healthy elderly population, and whether there is interplay between those factors. Methods: We conducted a cross-sectional positron emission tomography (PET) study with the amyloid tracer 11C-PIB, in 64 cognitively healthy subjects (54-89 years). In addition to PET, magnetic resonance imaging, neuropsychological testing, and APOE genotyping was performed. The results were assessed with a statistical general linear model as well as with Statistical Parametric Mapping (SPM). Results: The effects of age (p < 0.001), APOE ε4 carrier status (p = 0.003), and gender (p = 0.001) on composite cortical 11C-PIB uptake were all significant. The effect of educational level was non-significant (p = 0.37). No significant interactions were found between any of the factors. Cortical 11C-PIB uptake increased, on the average, by 0.015 cortex/cerebellar cortical ratio unit, with every year of age. APOE ε4 positive subjects exhibited higher cortical 11C-PIB uptake than APOE ε4 negative subjects (unadjusted means 1.49 ± 0.34 versus 1.29 ± 0.26) and males had higher uptake than females (1.49 ± 0.39 versus 1.29 ± 0.22), irrespective of age. The results of the voxel-based (SPM) analysis were similar. In addition, SPM analysis showed that lower CERAD score was associated with higher 11C-PIB uptake in the frontal cortex. Conclusions: Age and APOE ε4 genotype were associated with higher 11C-PIB uptake. In this sample of cognitively healthy elderly individuals, men exhibited higher 11C-PIB uptake than women. Possible gender differences in Aβ accumulation have not been addressed in detail in previous studies, and deeper evaluation in the future is warranted.

OriginalsprogEngelsk
TidsskriftJournal of Alzheimer's disease : JAD
Vol/bind41
Udgave nummer1
Sider (fra-til)193-202
ISSN1387-2877
DOI
StatusUdgivet - 1. jan. 2014

Fingeraftryk

N-methyl-2-(4'-methylaminophenyl)-6-hydroxybenzothiazole
Linear Models
Population

Citer dette

Scheinin, N. M., Wikman, K., Jula, A., Perola, M., Vahlberg, T., Rokka, J., ... Rinne, J. O. (2014). Cortical 11C-PIB Uptake is Associated with Age, APOE Genotype, and Gender in "Healthy Aging". Journal of Alzheimer's disease : JAD, 41(1), 193-202. https://doi.org/10.3233/JAD-132783
Scheinin, Noora M ; Wikman, Kristina ; Jula, Antti ; Perola, Markus ; Vahlberg, Tero ; Rokka, Johanna ; Någren, Kjell ; Viitanen, Matti ; Rinne, Juha O. / Cortical 11C-PIB Uptake is Associated with Age, APOE Genotype, and Gender in "Healthy Aging". I: Journal of Alzheimer's disease : JAD. 2014 ; Bind 41, Nr. 1. s. 193-202.
@article{cd67f1b5a3d449b1bd7c285134f654d7,
title = "Cortical 11C-PIB Uptake is Associated with Age, APOE Genotype, and Gender in {"}Healthy Aging{"}",
abstract = "Background/Objective: Our aim was to elucidate factors that contribute to amyloid-β (Aβ) accumulation in the brains of the seemingly healthy elderly population, and whether there is interplay between those factors. Methods: We conducted a cross-sectional positron emission tomography (PET) study with the amyloid tracer 11C-PIB, in 64 cognitively healthy subjects (54-89 years). In addition to PET, magnetic resonance imaging, neuropsychological testing, and APOE genotyping was performed. The results were assessed with a statistical general linear model as well as with Statistical Parametric Mapping (SPM). Results: The effects of age (p < 0.001), APOE ε4 carrier status (p = 0.003), and gender (p = 0.001) on composite cortical 11C-PIB uptake were all significant. The effect of educational level was non-significant (p = 0.37). No significant interactions were found between any of the factors. Cortical 11C-PIB uptake increased, on the average, by 0.015 cortex/cerebellar cortical ratio unit, with every year of age. APOE ε4 positive subjects exhibited higher cortical 11C-PIB uptake than APOE ε4 negative subjects (unadjusted means 1.49 ± 0.34 versus 1.29 ± 0.26) and males had higher uptake than females (1.49 ± 0.39 versus 1.29 ± 0.22), irrespective of age. The results of the voxel-based (SPM) analysis were similar. In addition, SPM analysis showed that lower CERAD score was associated with higher 11C-PIB uptake in the frontal cortex. Conclusions: Age and APOE ε4 genotype were associated with higher 11C-PIB uptake. In this sample of cognitively healthy elderly individuals, men exhibited higher 11C-PIB uptake than women. Possible gender differences in Aβ accumulation have not been addressed in detail in previous studies, and deeper evaluation in the future is warranted.",
author = "Scheinin, {Noora M} and Kristina Wikman and Antti Jula and Markus Perola and Tero Vahlberg and Johanna Rokka and Kjell N{\aa}gren and Matti Viitanen and Rinne, {Juha O}",
year = "2014",
month = "1",
day = "1",
doi = "10.3233/JAD-132783",
language = "English",
volume = "41",
pages = "193--202",
journal = "Journal of Alzheimer's Disease",
issn = "1387-2877",
publisher = "I O S Press",
number = "1",

}

Scheinin, NM, Wikman, K, Jula, A, Perola, M, Vahlberg, T, Rokka, J, Någren, K, Viitanen, M & Rinne, JO 2014, 'Cortical 11C-PIB Uptake is Associated with Age, APOE Genotype, and Gender in "Healthy Aging"', Journal of Alzheimer's disease : JAD, bind 41, nr. 1, s. 193-202. https://doi.org/10.3233/JAD-132783

Cortical 11C-PIB Uptake is Associated with Age, APOE Genotype, and Gender in "Healthy Aging". / Scheinin, Noora M; Wikman, Kristina; Jula, Antti; Perola, Markus; Vahlberg, Tero; Rokka, Johanna; Någren, Kjell; Viitanen, Matti; Rinne, Juha O.

I: Journal of Alzheimer's disease : JAD, Bind 41, Nr. 1, 01.01.2014, s. 193-202.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Cortical 11C-PIB Uptake is Associated with Age, APOE Genotype, and Gender in "Healthy Aging"

AU - Scheinin, Noora M

AU - Wikman, Kristina

AU - Jula, Antti

AU - Perola, Markus

AU - Vahlberg, Tero

AU - Rokka, Johanna

AU - Någren, Kjell

AU - Viitanen, Matti

AU - Rinne, Juha O

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Background/Objective: Our aim was to elucidate factors that contribute to amyloid-β (Aβ) accumulation in the brains of the seemingly healthy elderly population, and whether there is interplay between those factors. Methods: We conducted a cross-sectional positron emission tomography (PET) study with the amyloid tracer 11C-PIB, in 64 cognitively healthy subjects (54-89 years). In addition to PET, magnetic resonance imaging, neuropsychological testing, and APOE genotyping was performed. The results were assessed with a statistical general linear model as well as with Statistical Parametric Mapping (SPM). Results: The effects of age (p < 0.001), APOE ε4 carrier status (p = 0.003), and gender (p = 0.001) on composite cortical 11C-PIB uptake were all significant. The effect of educational level was non-significant (p = 0.37). No significant interactions were found between any of the factors. Cortical 11C-PIB uptake increased, on the average, by 0.015 cortex/cerebellar cortical ratio unit, with every year of age. APOE ε4 positive subjects exhibited higher cortical 11C-PIB uptake than APOE ε4 negative subjects (unadjusted means 1.49 ± 0.34 versus 1.29 ± 0.26) and males had higher uptake than females (1.49 ± 0.39 versus 1.29 ± 0.22), irrespective of age. The results of the voxel-based (SPM) analysis were similar. In addition, SPM analysis showed that lower CERAD score was associated with higher 11C-PIB uptake in the frontal cortex. Conclusions: Age and APOE ε4 genotype were associated with higher 11C-PIB uptake. In this sample of cognitively healthy elderly individuals, men exhibited higher 11C-PIB uptake than women. Possible gender differences in Aβ accumulation have not been addressed in detail in previous studies, and deeper evaluation in the future is warranted.

AB - Background/Objective: Our aim was to elucidate factors that contribute to amyloid-β (Aβ) accumulation in the brains of the seemingly healthy elderly population, and whether there is interplay between those factors. Methods: We conducted a cross-sectional positron emission tomography (PET) study with the amyloid tracer 11C-PIB, in 64 cognitively healthy subjects (54-89 years). In addition to PET, magnetic resonance imaging, neuropsychological testing, and APOE genotyping was performed. The results were assessed with a statistical general linear model as well as with Statistical Parametric Mapping (SPM). Results: The effects of age (p < 0.001), APOE ε4 carrier status (p = 0.003), and gender (p = 0.001) on composite cortical 11C-PIB uptake were all significant. The effect of educational level was non-significant (p = 0.37). No significant interactions were found between any of the factors. Cortical 11C-PIB uptake increased, on the average, by 0.015 cortex/cerebellar cortical ratio unit, with every year of age. APOE ε4 positive subjects exhibited higher cortical 11C-PIB uptake than APOE ε4 negative subjects (unadjusted means 1.49 ± 0.34 versus 1.29 ± 0.26) and males had higher uptake than females (1.49 ± 0.39 versus 1.29 ± 0.22), irrespective of age. The results of the voxel-based (SPM) analysis were similar. In addition, SPM analysis showed that lower CERAD score was associated with higher 11C-PIB uptake in the frontal cortex. Conclusions: Age and APOE ε4 genotype were associated with higher 11C-PIB uptake. In this sample of cognitively healthy elderly individuals, men exhibited higher 11C-PIB uptake than women. Possible gender differences in Aβ accumulation have not been addressed in detail in previous studies, and deeper evaluation in the future is warranted.

U2 - 10.3233/JAD-132783

DO - 10.3233/JAD-132783

M3 - Journal article

C2 - 24603945

VL - 41

SP - 193

EP - 202

JO - Journal of Alzheimer's Disease

JF - Journal of Alzheimer's Disease

SN - 1387-2877

IS - 1

ER -