Cited by 129Alzheimer's disease research and treatmentsDown syndrome and intellectual disability researchExtracellular vesicles in disease

Neuronal exosomes reveal Alzheimer's disease biomarkers in Down syndrome

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Hamlett, Eric D., Goetzl, Edward J., Ledreux, Aurélie, Vasilevko, Vitaly, Boger, Heather A., LaRosa, Angela, Clark, David, Carroll, Steven L. +9 more·2017·Alzheimer's & Dementia

Abstract

Introduction: Individuals with Down syndrome (DS) exhibit Alzheimer's disease (AD) neuropathology and dementia early in life. Blood biomarkers of AD neuropathology would be valuable, as non‐AD intellectual disabilities of DS and AD dementia overlap clinically. We hypothesized that elevations of amyloid β (Aβ) peptides and phosphorylated‐tau in neuronal exosomes may document preclinical AD. Methods: AD neuropathogenic proteins Aβ 1–42, P‐T181‐tau, and P‐S396‐tau were quantified by enzyme‐linked immunosorbent assays in extracts of neuronal exosomes purified from blood of individuals with DS and age‐matched controls. Results: Neuronal exosome levels of Aβ 1–42, P‐T181‐tau, and P‐S396‐tau were significantly elevated in individuals with DS compared with age‐matched controls at all ages beginning in childhood. No significant gender differences were observed. Discussion: These early increases in Aβ 1–42, P‐T181‐tau, and P‐S396‐tau in individuals with DS may provide a basis for early intervention as targeted treatments become available.

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Authors
Hamlett, E. D., Goetzl, E. J., Ledreux, A., Vasilevko, V., Boger, H. A., LaRosa, A., Clark, D., Carroll, S. L., Carmona‐Iragui, M., Fortea, J., Mufson, E. J., Sabbagh, M., Mohammed, A. H., Hartley, D., Doran, E., Lott, I. T., & Granholm, A.
Affiliations
  • University of Denver (US)
  • University of California, San Francisco (US)
  • University of California, Irvine (US)
  • Medical University of South Carolina (US)
  • Hospital de Sant Pau (ES)
  • Barrow Neurological Institute (US)
  • Linnaeus University (SE)
  • Alzheimer's Association (US)
Corresponding author
Granholm, Ann‐Charlotte
Venue
Alzheimer's & Dementia
Publisher
Wiley
Published
2016-10-15
Volume
13
Issue
5
Pages
541-549
ISSN
  • 1552-5260 (ISSN-L)
  • 1552-5279
OpenAlex
W2537024319
Cited by
129
References
47
Citations by year
2026: 6 · 2025: 16 · 2024: 9 · 2023: 6 · 2022: 7 · 2021: 19 · 2020: 17 · 2019: 25 · 2018: 15 · 2017: 9
FWCI
13.13
Type
journal article
Language
en
Open access
Locations
  • Alzheimer s & Dementia (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • Digital Commons - DU (University of Denver) (submittedVersion)
Funders
  • National Institutes of Health (R01AG 21912, R01HD065160, RO1AG04375, PO1AG14449)
  • National Center for Research Resources
  • National Center for Advancing Translational Sciences (UL1 TR000153)
Topics
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Down syndrome and intellectual disability research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
Keywords
Down syndrome, Alzheimer's disease
MeSH terms
Adolescent, Alzheimer Disease, Down Syndrome, Female, Humans, Male, Middle Aged, Peptide Fragments, Biomarkers, Amyloid beta-Peptides, tau Proteins, Exosomes, Young Adult

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