Cited by 287Ultrasound and Hyperthermia ApplicationsAlzheimer's disease research and treatmentsBarrier Structure and Function Studies

Alzheimer Disease in a Mouse Model: MR Imaging–guided Focused Ultrasound Targeted to the Hippocampus Opens the Blood-Brain Barrier and Improves Pathologic Abnormalities and Behavior

Open access
Burgess, Alison, Dubey, Sonam, Yeung, Sharon, Hough, Olivia, Eterman, Naomi, Aubert, Isabelle, Hynynen, Kullervo·2014·Radiology

Abstract

PURPOSE: To validate whether repeated magnetic resonance (MR) imaging-guided focused ultrasound treatments targeted to the hippocampus, a brain structure relevant for Alzheimer disease ( AD Alzheimer disease ), could modulate pathologic abnormalities, plasticity, and behavior in a mouse model. MATERIALS AND METHODS: All animal procedures were approved by the Animal Care Committee and are in accordance with the Canadian Council on Animal Care. Seven-month-old transgenic (TgCRND8) (Tg) mice and their nontransgenic (non-Tg) littermates were entered in the study. Mice were treated weekly with MR imaging-guided focused ultrasound in the bilateral hippocampus (1.68 MHz, 10-msec bursts, 1-Hz burst repetition frequency, 120-second total duration). After 1 month, spatial memory was tested in the Y maze with the novel arm prior to sacrifice and immunohistochemical analysis. The data were compared by using unpaired t tests and analysis of variance with Tukey post hoc analysis. RESULTS: Untreated Tg mice spent 61% less time than untreated non-Tg mice exploring the novel arm of the Y maze because of spatial memory impairments (P < .05). Following MR imaging-guided focused ultrasound, Tg mice spent 99% more time exploring the novel arm, performing as well as their non-Tg littermates. Changes in behavior were correlated with a reduction of the number and size of amyloid plaques in the MR imaging-guided focused ultrasound-treated animals (P < .01). Further, after MR imaging-guided focused ultrasound treatment, there was a 250% increase in the number of newborn neurons in the hippocampus (P < .01). The newborn neurons had longer dendrites and more arborization after MR imaging-guided focused ultrasound, as well (P < .01). CONCLUSION: Repeated MR imaging-guided focused ultrasound treatments led to spatial memory improvement in a Tg mouse model of AD Alzheimer disease . The behavior changes may be mediated by decreased amyloid pathologic abnormalities and increased neuronal plasticity.

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 · 10.1148/radiol.14140245

Cites

31 of 31 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?

  • A magnetic resonance guide can focus ultrasound with intravenously injected microbubbles to transiently open the BBB and reduce Aβ and tau pathology in animal models of AD.

    “A magnetic resonance guide can be a good solution to focus ultrasound in combination with intravenously injected microbubbles in order to transiently open the BBB and reduce Aβ and τau pathology in animal models of AD [258].”

    From Alzheimer's Disease: Treatment Strategies and Their Limitations. (2022) · cites this paper as [258]

    The Introduction describes temporary BBB opening with MR-guided focused ultrasound and intravenously administered microbubbles. The Results report reduced amyloid plaque load in TgCRND8 mice, but the paper does not report a reduction in tau pathology. Page numbers are unavailable in our copy. (LLM, conf=0.90)

    Experimental — accuracy not yet measured
  • Animal studies have demonstrated reduction of amyloid-beta plaque, neurogenesis, and improvement of memory with focused ultrasound.

    “Animal studies have demonstrated safe and reversible BBB opening (4, 6, 7) as well as reduction of amyloid-beta plaque, neurogenesis, and improvement of memory.”
  • Animal studies have demonstrated safe and reversible blood-brain barrier opening with focused ultrasound.

    “Animal studies have demonstrated safe and reversible BBB opening (4, 6, 7) as well as reduction of amyloid-beta plaque, neurogenesis, and improvement of memory.”

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

Research works printed but not linked: 1

  1. [21]Maliszewska-Cyna E, McLaurin J, Aubert I. Examining the effects of exercise on amyloid pathology, adult neurogenesis, and cognition in a mouse model of Alzheimer’s disease [abstr]. Presented at the Experimental Biology Conference, Boston, Mass, April 20–24, 2013. [Google Scholar]

Cited by

Sorted by citations

Authors
Burgess, A., Dubey, S., Yeung, S., Hough, O., Eterman, N., Aubert, I., & Hynynen, K.
Affiliations
  • University of Toronto (CA)
  • Sunnybrook Research Institute (CA)
Venue
Radiology
Published
2014-12
Volume
273
Issue
3
Pages
736-745
ISSN
  • 0033-8419 (ISSN-L)
  • 1527-1315
OpenAlex
W2131358222
Cited by
286
References
31
Citations by year
2026: 14 · 2025: 18 · 2024: 19 · 2023: 24 · 2022: 29 · 2021: 41 · 2020: 34 · 2019: 26 · 2018: 31 · 2017: 17 · 2016: 19 · 2015: 10 · 2014: 3
FWCI
8.48
Type
journal article
Language
en
Open access
Locations
  • Radiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (FRN 119312, EB003268)
  • Canadian Institutes of Health Research (R01 EB003268, FRN93063, 119312_1)
  • National Institute of Biomedical Imaging and Bioengineering (R01EB003268)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Ultrasound and Hyperthermia Applications
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
Keywords
Alzheimer's disease, hippocampus, blood-brain barrier opening, TgCRND8 mice, amyloid plaques, spatial memory, newborn neurons, neuroplasticity, dendritic branching, transgenic mouse model
MeSH terms
Algorithms, Alzheimer Disease, Animals, Blood-Brain Barrier, Contrast Media, Disease Models, Animal, Fluorocarbons, Hippocampus, Mice, Transgenic, Ultrasonic Therapy, Gadolinium DTPA, Mice, Magnetic Resonance Imaging, Interventional

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