Diagnostic Values of Cerebrospinal Fluid T-Tau and Aß42 using Meso Scale Discovery Assays for Alzheimer's Disease.
J Alzheimers Dis
; 45(3): 709-19, 2015.
Article
in En
| MEDLINE
| ID: mdl-25613100
ABSTRACT
BACKGROUND:
Meso Scale Discovery (MSD) recently established electrochemiluminescence-based assays to measure cerebrospinal fluid (CSF) levels of total tau (t-tau) and amyloid-ß 1-42 peptide (Aß42) that can aid in the diagnosis of Alzheimer's disease (AD). The goal of this investigation is to independently evaluate this platform and establish cut-off values of these biomarkers for AD diagnosis.OBJECTIVE:
To validate the analytical and clinical performance of the MSD t-tau and Aß42 kits and propose diagnostic cut-off values for the field.METHODS:
The analytical performance of the CSF t-tau and Aß42 assays was determined, followed by assessment of diagnostic performance of CSF t-tau, Aß42, and t-tau/Aß42 in three clinically characterized cohorts.RESULTS:
Both MSD assays demonstrated consistent and stable analytical performance, as well as resistance to several important pre-analytic variables. Diagnostically, t-tau/Aß42 performed the best.CONCLUSIONS:
Our results independently confirm the analytical and clinical performance of the MSD CSF t-tau and Aß42 assays. Based on a large, multi-center, clinically-diagnosed cohort, we propose for the first time candidate diagnostic cut-offs for MSD measured CSF t-tau, Aß42, and t-tau/Aß42. However, these values needs to be refined as more subjects are included and the assays are tested by other laboratories.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Peptide Fragments
/
Amyloid beta-Peptides
/
Tau Proteins
/
Alzheimer Disease
Type of study:
Clinical_trials
/
Diagnostic_studies
/
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Aspects:
Patient_preference
Limits:
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
J Alzheimers Dis
Journal subject:
GERIATRIA
/
NEUROLOGIA
Year:
2015
Document type:
Article
Affiliation country:
United States