Cited by 248Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration Mechanisms

Effect of APOE genotype on amyloid plaque load and gray matter volume in Alzheimer disease

Drzezga, A., Grimmer, T., Henriksen, G., Mühlau, M., Perneczky, R., Miederer, I., Praus, C., Sorg, C. +6 more·2009·Neurology

Abstract

OBJECTIVE: To examine the influence of the APOE genotype on levels of beta-amyloid (Abeta) plaque load and atrophy in patients with Alzheimer disease (AD) in vivo. METHODS: Thirty-two patients with moderate AD were divided into carriers and noncarriers of the epsilon4 allele. These groups were matched for age, disease duration, education, and cognitive impairment. In all subjects, [11C]PIB-PET was performed for measurement of cerebral Abeta plaque deposition and cranial MRI for the assessment of gray matter volume by voxel-based morphometry (VBM) and for correction of partial volume effects (PVE) in the PET data. Voxel-based comparisons (SPM5) were performed between patient groups and healthy control populations and completed with multiple regression analyses between imaging data and epsilon4 allele frequency. RESULTS: Compared to controls, AD-typical patterns of [11C]PIB retention and atrophy were detected in both epsilon4-positive and epsilon4-negative patient groups. In direct comparison, significantly stronger and more extended [11C]PIB uptake was found in epsilon4-positive patients in bilateral temporoparietal and frontal cortex, surviving PVE correction. VBM analysis demonstrated comparable levels of atrophy in both patient groups. Regression analyses revealed a linear association between higher epsilon4 allele frequency and stronger temporoparietal Abeta plaque deposition, independently of other confounds. No major correlation between epsilon4 allele frequency and gray matter decrease was observed. CONCLUSION: These results indicate that the epsilon4-positive APOE genotype not only represents a risk factor for Alzheimer disease (AD), but also results in higher levels of Abeta plaque deposition in epsilon4-positive patients with AD compared to age-matched epsilon4-negative patients with similar levels of cognitive impairment and brain atrophy. The potential role of Abeta plaque imaging for patient inclusion and follow-up in anti-amyloid therapy trials is strengthened by these findings.

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Crossref · 10.1212/wnl.0b013e3181a2e8d0

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  • Plaque deposition is increased with APOE4 compared with APOE2 and APOE3 in humans and transgenic mice expressing familial AD mutations.

    “Plaque deposition is increased with APOE4 compared with APOE2 and APOE3 in humans and transgenic mice expressing familial AD (FAD) mutations (FAD-Tg) (2)(3)(4)(5).”
  • APOE4 is the primary genetic risk factor for Alzheimer disease, increasing the risk by approximately 4-fold with a single allele and 15-fold with a double allele, whereas APOE2 reduces the risk compared with APOE3.

    “The primary genetic risk factor for Alzheimer disease (AD) 4 is APOE4, increasing the risk by ϳ4and 15-fold with a single or double allele, whereas APOE2 reduces the risk compared with APOE3.”

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Authors
Drzezga, A., Grimmer, T., Henriksen, G., Mühlau, M., Perneczky, R., Miederer, I., Praus, C., Sorg, C., Wohlschläger, A., Riemenschneider, M., Wester, H. J., Foerstl, H., Schwaiger, M., & Kurz, A.
Affiliations
  • Technical University of Munich (DE)
  • From the Departments of Nuclear Medicine (A.D., G.H., I.M., C.P., A.W., H.J.W., M.S.), Psychiatry and Psychotherapy (T.G., R.P., C.S., M.R., H.F., A.K.), Neurology (M.M.), and Neuroradiology (A.W.), Technische Universität München, Munich, Germany.
Venue
Neurology
Published
2009-04-28
Volume
72
Issue
17
Pages
1487-1494
ISSN
  • 0028-3878 (ISSN-L)
  • 1526-632X
OpenAlex
W2050255138
Cited by
248
References
38
Citations by year
2026: 1 · 2025: 5 · 2024: 7 · 2023: 4 · 2022: 16 · 2021: 6 · 2020: 8 · 2019: 9 · 2018: 17 · 2017: 13 · 2016: 16 · 2015: 18 · 2014: 22 · 2013: 15 · 2012: 25
FWCI
18.70
Type
journal article
Language
en
Open access
closed
Locations
  • Neurology (publishedVersion)
  • PubMed (publishedVersion)
  • mediaTUM (Technical University of Munich) (submittedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
APOE ε4, Alzheimer's disease, amyloid plaques, gray matter atrophy, 11C-PiB PET, amyloid imaging, genetic risk factors, temporoparietal cortex, partial volume correction
MeSH terms
Aged, Aged, 80 and over, Alzheimer Disease, Aniline Compounds, Apolipoproteins E, Brain, Carbon Radioisotopes, DNA Mutational Analysis, Female, Gene Frequency, Genetic Testing, Genotype, Humans, Male, Middle Aged, Polymorphism, Genetic, Risk Factors, Thiazoles, Amyloid beta-Peptides, Genetic Predisposition to Disease, Positron-Emission Tomography, Benzothiazoles, Apolipoprotein E4, Plaque, Amyloid

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