Neuronal exosomes reveal Alzheimer's disease biomarkers in Down syndrome.
Alzheimers Dement
; 13(5): 541-549, 2017 May.
Article
en En
| MEDLINE
| ID: mdl-27755974
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 ß (Aß) peptides and phosphorylated-tau in neuronal exosomes may document preclinical AD. METHODS: AD neuropathogenic proteins Aß1-42, 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 Aß1-42, 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 Aß1-42, P-T181-tau, and P-S396-tau in individuals with DS may provide a basis for early intervention as targeted treatments become available.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Síndrome de Down
/
Exosomas
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Enfermedad de Alzheimer
Límite:
Adolescent
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Adult
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Revista:
Alzheimers Dement
Año:
2017
Tipo del documento:
Article
País de afiliación:
Estados Unidos