Cited by 137Alzheimer's disease research and treatmentsNeuroinflammation and Neurodegeneration MechanismsDementia and Cognitive Impairment Research

In Vivo Positron Emission Tomographic Imaging of Glial Responses to Amyloid-β and Tau Pathologies in Mouse Models of Alzheimer's Disease and Related Disorders

Open access
Maeda, Jun, Zhang, Ming-Rong, Okauchi, Takashi, Ji, Bin, Ono, Maiko, Hattori, Satoko, Kumata, Katsushi, Iwata, Nobuhisa +9 more·2011·The Journal of Neuroscience

Abstract

Core pathologies of Alzheimer's disease (AD) are aggregated amyloid-β peptides (Aβ) and tau, and the latter is also characteristic of diverse neurodegenerative tauopathies. These amyloid lesions provoke microglial activation, and recent neuroimaging technologies have enabled visualization of this response in living brains using radioligands for the peripheral benzodiazepine receptor also known as the 18 kDa translocator protein (TSPO). Here, we elucidated contributions of Aβ and tau deposits to in vivo TSPO signals in pursuit of mechanistic and diagnostic significance of TSPO imaging in AD and other tauopathies. A new antibody to human TSPO revealed induction of TSPO-positive microgliosis by tau fibrils in tauopathy brains. Emergence of TSPO signals before occurrence of brain atrophy and thioflavin-S-positive tau amyloidosis was also demonstrated in living mice transgenic for mutant tau by positron emission tomography (PET) with two classes of TSPO radioligands, [11 C]AC-5216 and [18 F]fluoroethoxy-DAA1106. Meanwhile, only modest TSPO elevation was observed in aged mice modeling Aβ plaque deposition, despite the notably enhanced in vivo binding of amyloid radiotracer, [11 C]Pittsburgh Compound-B, to plaques. In these animals, [11 C]AC-5216 yielded better TSPO contrasts than [18 F]fluoroethoxy-DAA1106, supporting the possibility of capturing early neurotoxicity with high-performance TSPO probes. Furthermore, an additional line of mice modeling intraneuronal Aβ accumulation displayed elevated TSPO signals following noticeable neuronal loss, unlike TSPO upregulation heralding massive neuronal death in tauopathy model mice. Our data corroborate the utility of TSPO-PET imaging as a biomarker for tau-triggered toxicity, and as a complement to amyloid scans for diagnostic assessment of tauopathies with and without Aβ pathologies.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1523/jneurosci.3076-10.2011

Cites

53 of 53 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • TPSO signal increases with microglia activation in tauopathies including AD, PSP, PiD, and FTDP-17.

    “TPSO signal has been shown to increase with microglia activation in tauopathies including AD, PSP, PiD, and FTDP-17 [111–113] as well as several other neurodegenerative diseases and injury models such as other frontotemporal dementias (FTDs), Parkinson’s disease, stroke and TBI [114].”

    From Glial contributions to neurodegeneration in tauopathies (2017) · cites this paper as [111]

  • TPSO signaling preceded thioflavin-S-positive tangles and MRI-measureable regional atrophy in PS19 mice, implying TPSO PET may be more adept at detecting neuroinflammation induced by tau aggregation.

    “Importantly, TPSO signaling preceded thioflavin-S-positive tangles and MRI-measureable regional atrophy in the mice implying TPSO PET may be more adept at detecting neuroinflammation induced by tau aggregation [111].”

    From Glial contributions to neurodegeneration in tauopathies (2017) · cites this paper as [111]

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Maeda, J., Zhang, M.-R., Okauchi, T., Ji, B., Ono, M., Hattori, S., Kumata, K., Iwata, N., Saido, T. C., Trojanowski, J. Q., Lee, V. M.-Y., Staufenbiel, M., Tomiyama, T., Mori, H., Fukumura, T., Suhara, T., & Higuchi, M.
Affiliations
  • National Institute of Radiological Sciences (JP)
  • RIKEN Center for Brain Science (JP)
  • University of Pennsylvania (US)
  • Novartis (Switzerland) (CH)
  • Osaka City University (JP)
Corresponding author
Higuchi, Makoto
Venue
The Journal of Neuroscience
Published
2011-03-23
Volume
31
Issue
12
Pages
4720-4730
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2160881303
Cited by
136
References
53
Citations by year
2025: 3 · 2024: 5 · 2023: 9 · 2022: 4 · 2021: 14 · 2020: 14 · 2019: 9 · 2018: 6 · 2017: 7 · 2016: 10 · 2015: 12 · 2014: 17 · 2013: 14 · 2012: 9
FWCI
9.60
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Repositories DataBase (IRDB) (submittedVersion, cc-by-nc-nd)
Funders
  • Ministry of Education, Culture, Sports, Science and Technology
  • National Institutes of Health (AG 10 124, AG 17586)
  • Japan Society for the Promotion of Science (20790047, 23390235, 20023036, 22790835)
  • National Institute on Aging (P30AG010124, P01AG017586, AG17586, AG-10124)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
Keywords
Alzheimer's disease, tauopathy, translocator protein (TSPO), microglial activation, amyloid plaques, tau fibrils, TSPO PET imaging, Pittsburgh compound B, intraneuronal amyloid-beta, neurodegeneration biomarkers, neuroinflammation
MeSH terms
Acetamides, Alzheimer Disease, Aniline Compounds, Animals, Autoradiography, Brain, Humans, Immunohistochemistry, Isotope Labeling, Magnetic Resonance Imaging, Mice, Inbred C57BL, Neuritis, Neuroglia, Purines, Supranuclear Palsy, Progressive, Thiazoles, Amyloid beta-Protein Precursor, tau Proteins, Receptors, GABA, Radiopharmaceuticals, Pick Disease of the Brain, Positron-Emission Tomography, Mice, Plaque, Amyloid

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review