Cited by 33Alzheimer's disease research and treatmentsDementia and Cognitive Impairment ResearchNeuroinflammation and Neurodegeneration Mechanisms

Neuroimaging of mouse models of Alzheimer’s disease

Open access
Jullienne, Amandine, Trinh, Michelle V., Obenaus, Andre·2022·Biomedicines

Abstract

Magnetic resonance imaging (MRI) and positron emission tomography (PET) have made great strides in the diagnosis and our understanding of Alzheimer’s Disease (AD). Despite the knowledge gained from human studies, mouse models have and continue to play an important role in deciphering the cellular and molecular evolution of AD. MRI and PET are now being increasingly used to investigate neuroimaging features in mouse models and provide the basis for rapid translation to the clinical setting. Here, we provide an overview of the human MRI and PET imaging landscape as a prelude to an in-depth review of preclinical imaging in mice. A broad range of mouse models recapitulate certain aspects of the human AD, but no single model simulates the human disease spectrum. We focused on the two of the most popular mouse models, the 3xTg-AD and the 5xFAD models, and we summarized all known published MRI and PET imaging data, including contrasting findings. The goal of this review is to provide the reader with broad framework to guide future studies in existing and future mouse models of AD. We also highlight aspects of MRI and PET imaging that could be improved to increase rigor and reproducibility in future imaging studies.

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Crossref · 10.3390/biomedicines10020305

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  • Age-related brain atrophy and myelin loss are observed on advanced high-field MRI in the 3×Tg-AD model.

    “Alongside the progression of AD pathology, age-related brain atrophy and myelin loss are observed on advanced high-field MRI (Ni, 2021; Jullienne et al., 2022; Bergamino et al., 2023).”

    From Multimodal MRI combined with RNA sequencing reveals pathological signatures in the 9-month-old 3×Tg-AD mouse brain (2026) · cites this paper as Jullienne et al., 2022

    Section 4.2.1 reports MRI-observed cortical atrophy in 18-month-old 3xTg-AD mice, and the Summary describes volumetric declines with increasing age. But section 4.2.4 reports no changes in myelin staining in mice aged 11–17 months; it does not support the claimed myelin loss. The supplied passages do not establish that these findings were observed specifically on high-field MRI (page numbers unavailable). (LLM, conf=0.87)

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Authors
Jullienne, A., Trinh, M. V., & Obenaus, A.
Affiliations
  • University of California, Irvine (US)
  • Department of Pediatrics, University of California, Irvine, CA 92697, USA
Venue
Biomedicines
Publisher
MDPI AG
Published
2022-01-28
Volume
10
Issue
2
Pages
305
ISSN
2227-9059 (ISSN-L)
OpenAlex
W4210462365
Cited by
32
References
232
Citations by year
2026: 8 · 2025: 8 · 2024: 6 · 2023: 6 · 2022: 4
FWCI
0.83
Type
journal article
Language
en
Open access
Locations
  • Biomedicines (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Institute on Aging (AG054345-01, AG054349-01)
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, mouse models of Alzheimer's disease, 3xTg-AD mice, 5xFAD mice, magnetic resonance imaging, positron emission tomography, imaging biomarkers

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