Cited by 61Parkinson's Disease Mechanisms and TreatmentsAlzheimer's disease research and treatmentsNeurological disorders and treatments

Network dysfunction in α‐synuclein transgenic mice and human Lewy body dementia

Open access
Morris, Meaghan, Sanchez, Pascal E., Verret, Laure, Beagle, Alexander J., Guo, Weikun, Dubal, Dena, Ranasinghe, Kamalini G., Koyama, Akihiko +4 more·2015·Annals of Clinical and Translational Neurology

Abstract

Objective: Dementia with Lewy bodies (DLB) is associated with the accumulation of wild‐type human α‐synuclein (SYN) in neurons and with prominent slowing of brain oscillations on electroencephalography (EEG). However, it remains uncertain whether the EEG abnormalities are actually caused by SYN. Methods: To determine whether SYN can cause neural network abnormalities, we performed EEG recordings and analyzed the expression of neuronal activity‐dependent gene products in SYN transgenic mice. We also carried out comparative analyses in humans with DLB. Results: We demonstrate that neuronal expression of SYN in transgenic mice causes a left shift in spectral power that closely resembles the EEG slowing observed in DLB patients. Surprisingly,SYN mice also had seizures and showed molecular hippocampal alterations indicative of aberrant network excitability, including calbindin depletion in the dentate gyrus. In postmortem brain tissues from DLB patients, we found reduced levels of calbindin mRNA in the dentate gyrus. Furthermore, nearly one quarter of DLB patients showed myoclonus, a clinical sign of aberrant network excitability that was associated with an earlier age of onset of cognitive impairments. In SYN mice, partial suppression of epileptiform activity did not alter their shift in spectral power. Furthermore, epileptiform activity in human amyloid precursor protein transgenic mice was not associated with a left shift in spectral power. Interpretation: We conclude that neuronal accumulation of SYN slows brain oscillations and, in parallel, causes aberrant network excitability that can escalate into seizure activity. The potential role of aberrant network excitability in DLB merits further investigation.

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 · 10.1002/acn3.257

Cites

66 of 66 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?

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

1 retracted

Flagged first, then by citations

Research works printed but not linked: 1

  1. [16]Rothman K, Greenland S. Modern epidemiology. 3rd ed Philadelphia: Lippincott Williams & Wilkins, 2008.

Cited by

Sorted by citations

Authors
Morris, M., Sanchez, P. E., Verret, L., Beagle, A. J., Guo, W., Dubal, D., Ranasinghe, K. G., Koyama, A., Ho, K., Yu, G., Vossel, K. A., & Mucke, L.
Affiliations
  • Gladstone Institutes (US)
  • University of California, San Francisco (US)
Corresponding author
Mucke, Lennart
Venue
Annals of Clinical and Translational Neurology
Publisher
Wiley
Published
2015-10-16
Volume
2
Issue
11
Pages
1012-1028
ISSN
2328-9503 (ISSN-L)
OpenAlex
W2128212150
Cited by
61
References
66
Citations by year
2026: 9 · 2025: 4 · 2024: 8 · 2023: 5 · 2022: 6 · 2021: 7 · 2020: 10 · 2019: 4 · 2018: 2 · 2017: 3 · 2016: 2 · 2013: 1
FWCI
1.64
Type
journal article
Language
en
Open access
Locations
  • Annals of Clinical and Translational Neurology (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion, cc-by-nc-nd)
  • HAL (submittedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institutes of Health (K23 AG038357, P30 NS065780)
  • University of California, San Francisco
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Neurology › Neurological disorders and treatments
Keywords
dementia with Lewy bodies, alpha-synuclein, EEG slowing, neural oscillations, network dysfunction, network excitability, seizures, calbindin, dentate gyrus, myoclonus, epileptiform activity, amyloid precursor protein transgenic mice, age of onset

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