Diffusion MRI detects longitudinal white matter changes in the 3xTg-AD mouse model of Alzheimer's disease
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The sensitivity of multiple diffusion MRI (dMRI) parameters to longitudinal changes in white matter microstructure was investigated for the 3xTg-AD transgenic mouse model of Alzheimer's disease, which manifests both amyloid beta plaques and neurofibrillary tangles. By employing a specific dMRI method known as diffusional kurtosis imaging, eight different diffusion parameters were quantified to characterize distinct aspects of water diffusion. Four female 3xTg-AD mice were imaged at five time points, ranging from 4.5 to 18 months of age, and the diffusion parameters were investigated in four white matter regions (fimbria, external capsule, internal capsule and corpus callosum). Significant changes were observed in several diffusion parameters, particularly in the fimbria and in the external capsule, with a statistically significant decrease in diffusivity and a statistically significant increase in kurtosis. Our preliminary results demonstrate that dMRI can detect microstructural changes in white matter for the 3xTg-AD mouse model due to aging and/or progression of pathology, depending strongly on the diffusion parameter and anatomical region.
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The authors found that dMRI metrics change longitudinally with aging and AD pathology progression in several brain regions.
“Moreover, we found that dMRI metrics change longitudinally with aging [16] and AD pathology progression [17] in several brain regions.”
From Brain microstructure abnormalities in the 3xTg-AD mouse – A diffusion MRI and morphology correlation study (2022) · cites this paper as [17]
The Results report longitudinal changes in dMRI measures across several white-matter regions of 3xTg-AD mice. The Discussion suggests that some changes accompany AD-like pathology progression, but says the absence of a control group prevents separating pathology-related changes from aging; it does not establish that progression caused the measured changes. Page numbers were not provided. (LLM, conf=0.86)
Experimental — accuracy not yet measuredThe inconsistent findings among DTI studies suggest that age-related diffusion metrics changes in the 3×Tg-AD mouse model are complex.
“The inconsistent findings among these DTI studies suggest that age-related diffusion metrics changes in the 3×Tg-AD mouse model are complex (Nie et al., 2019).”
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 Nie et al., 2019
The Discussion describes conflicting diffusion-metric findings across studies and notes that methodological differences make direct comparison difficult. It also says there was only one prior dMRI study of white matter in 3xTg-AD mice, and that study did not report age-related trajectories. Thus, the paper supports complexity in interpreting the changes, but not inconsistent age-related findings among multiple DTI studies of this specific model. (LLM, conf=0.85)
Experimental — accuracy not yet measuredOther studies conducted on the same model in mice at ages 2, 12, and 14 months identified significant WM alterations.
“Conversely, other studies conducted on the same model in mice at ages 2, 12, and 14 months identified significant WM alterations (Manno et al., 2019; Nie et al., 2019; Falangola et al., 2021).”
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 Nie et al., 2019
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Neuroimaging of mouse models of Alzheimer’s disease
Jullienne, A., Trinh, M. V., & Obenaus, A. (2022) · Biomedicines · doi:10.3390/biomedicines10020305 · Cited by 32 · see citing works
Falangola, M. F., Nie, X., Ward, R., Dhiman, S., Voltin, J., Nietert, P. J., & Jensen, J. H. (2021) · Magnetic Resonance Imaging · doi:10.1016/j.mri.2021.06.022 · Cited by 25 · see citing works
Diffusion MRI detects early brain microstructure abnormalities in 2-month-old 3×Tg-AD mice
Falangola, M. F., Nie, X., Ward, R., McKinnon, E. T., Dhiman, S., Nietert, P. J., Helpern, J. A., & Jensen, J. H. (2020) · NMR in Biomedicine · doi:10.1002/nbm.4346 · Cited by 22 · see citing works
Self-citationFalangola, M. F., Nie, X., Voltin, J., Ward, R., Dhiman, S., Nietert, P. J., & Jensen, J. H. (2022) · Magnetic Resonance Imaging · doi:10.1016/j.mri.2022.09.002 · Cited by 6 · see citing works
Self-citationLi, Y., Tang, Z., Yao, M., Ran, Y., & Qiu, Z. (2026) · Neural Regeneration Research · doi:10.4103/nrr.nrr-d-25-00006
- Authors
- Nie, X., Falangola, M. F., Ward, R., McKinnon, E. T., Helpern, J. A., Nietert, P. J., & Jensen, J. H.
- Affiliations
- Medical University of South Carolina (US)
- Corresponding author
- Nie, Xingju
- ORCID
- Venue
- Magnetic Resonance Imaging
- Publisher
- Elsevier BV
- Published
- 2019-04
- Volume
- 57
- Pages
- 235-242
- ISSN
- 0730-725X (ISSN-L)
- PMC
- PMC6331227
- OpenAlex
- W2904488874
- Cited by
- 22
- References
- 7
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 3 · 2023: 4 · 2022: 3 · 2021: 4 · 2020: 3 · 2019: 1
- FWCI
- 1.38
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Magnetic Resonance Imaging (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health (1RF1AG057602-01, T32DC014435)
- The Litwin Foundation
- Topics
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
- Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
- Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
- Keywords
- diffusion MRI, white matter microstructure, Alzheimer's disease, 3xTg-AD mice, diffusion kurtosis imaging, longitudinal change, fimbria, external capsule, internal capsule, corpus callosum, amyloid plaques, neurofibrillary tangles, aging, water diffusion
- MeSH terms
- Alzheimer Disease, Animals, Disease Models, Animal, Female, Humans, Mice, Transgenic, Neurofibrillary Tangles, Disease Progression, Diffusion Magnetic Resonance Imaging, Mice, Plaque, Amyloid, White Matter
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