Cited by 302Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Longitudinal, Quantitative Assessment of Amyloid, Neuroinflammation, and Anti-Amyloid Treatment in a Living Mouse Model of Alzheimer's Disease Enabled by Positron Emission Tomography

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Maeda, Jun, Ji, Bin, Irie, Toshiaki, Tomiyama, Takami, Maruyama, Masahiro, Okauchi, Takashi, Staufenbiel, Matthias, Iwata, Nobuhisa +6 more·2007·The Journal of Neuroscience

Abstract

We provide the first evidence for the capability of a high-resolution positron emission tomographic (PET) imaging system in quantitatively mapping amyloid accumulation in living amyloid precursor protein transgenic (Tg) mice. After the intravenous administration of N-[11 C]methyl-2-(4′-methylaminophenyl)-6-hydroxybenzothiazole (or [11 C]PIB for “Pittsburgh Compound-B”) with high-specific radioactivity, the Tg mice exhibited high-level retention of radioactivity in amyloid-rich regions. PET investigation for Tg mice over an extended range of ages, including longitudinal assessments, demonstrated age-dependent increase in radioligand binding consistent with progressive amyloid accumulation. Reduction in amyloid levels in the hippocampus of Tg mice was also successfully monitored by multiple PET scans along the time course of anti-amyloid treatment using an antibody against amyloid β peptide (Aβ). Moreover, PET scans with [18 F]fluoroethyl-DAA1106, a radiotracer for activated glia, were conducted for these individuals parallel to amyloid imaging, revealing treatment-induced neuroinflammatory responses, the magnitude of which intimately correlated with the levels of pre-existing amyloid estimated by [11 C]PIB. It is also noteworthy that the localization and abundance of [11 C]PIB autoradiographic signals were closely associated with those of N-terminally truncated and modified Aβ, AβN3-pyroglutamate, in Alzheimer's disease (AD) and Tg mouse brains, implying that the detectability of amyloid by [11 C]PIB positron emission tomography is dependent on the accumulation of specific Aβ subtypes. Our results support the usefulness of the small animal-dedicated PET system in conjunction with high-specific radioactivity probes and appropriate Tg models not only for clarifying the mechanistic properties of amyloidogenesis in mouse models but also for preclinical tests of emerging diagnostic and therapeutic approaches to AD.

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Authors
Maeda, J., Ji, B., Irie, T., Tomiyama, T., Maruyama, M., Okauchi, T., Staufenbiel, M., Iwata, N., Ono, M., Saido, T. C., Suzuki, K., Mori, H., Higuchi, M., & Suhara, T.
Affiliations
  • National Institute of Radiological Sciences (JP)
  • Osaka City University (JP)
  • Novartis (Switzerland) (CH)
  • RIKEN Center for Brain Science (JP)
Corresponding author
Higuchi, Makoto
Venue
The Journal of Neuroscience
Published
2007-10-10
Volume
27
Issue
41
Pages
10957-10968
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W1984320700
Cited by
300
References
45
Citations by year
2026: 3 · 2025: 7 · 2024: 7 · 2023: 2 · 2022: 8 · 2021: 10 · 2020: 18 · 2019: 5 · 2018: 8 · 2017: 10 · 2016: 12 · 2015: 15 · 2014: 21 · 2013: 23 · 2012: 38
FWCI
20.35
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
Japan Society for the Promotion of Science (18023033, 18023040)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
Keywords
Alzheimer's disease, amyloid imaging, Pittsburgh compound B, [11C]PIB, amyloid precursor protein transgenic mice, neuroinflammation, amyloid-beta, amyloid accumulation, hippocampus, longitudinal imaging
MeSH terms
Age Factors, Alzheimer Disease, Aniline Compounds, Animals, Antibodies, Disease Models, Animal, Female, Inflammation, Longitudinal Studies, Mice, Inbred C57BL, Mice, Transgenic, Thiazoles, Amyloid beta-Peptides, Neurofibrillary Tangles, Positron-Emission Tomography, Mice

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