期刊
JOURNAL OF NEUROCHEMISTRY
卷 149, 期 1, 页码 126-138出版社
WILEY
DOI: 10.1111/jnc.14569
关键词
biomarker; cerebrospinal fluid; enzyme-linked immunoabsorbent assay; mass spectrometry; round robin; alpha-synuclein
资金
- Michael J. Fox Foundation
- 'Roland Bailly Foundation', Geneva, Switzerland
- TEVA-Pharma
- Desitin
- Boehringer Ingelheim
- GE Healthcare
- Deutsche Forschungsgemeinschaft
- BMBF
- EU (Horizon2020)
- Parkinson Fonds Deutschland
- Deutsche Parkinson Vereinigung
- Michael J. Fox Foundation for Parkinson's Research
- Stifterverband fur die deutsche Wissenschaft
- NIH/NIA [U19 AG024904, P30AG010124]
- Eli Lilly
- Hoffman LaRoche
- UCB
- AC Immune
- European Commission
- Dutch Research Council (ZonMW)
- Association of Frontotemporal Dementia/Alzheimer's Drug Discovery Foundation
- Alzheimer Netherlands
- Probiodrug
- Janssen prevention center
- Boehringer
- Brainsonline
- AxonNeurosciences
- EIP farma
- Roche
alpha-Synuclein is the major component of Lewy bodies and a candidate biomarker for neurodegenerative diseases in which Lewy bodies are common, including Parkinson's disease and dementia with Lewy bodies. A large body of literature suggests that these disorders are characterized by reduced concentrations of alpha-synuclein in cerebrospinal fluid (CSF), with overlapping concentrations compared to healthy controls and variability across studies. Several reasons can account for this variability, including technical ones, such as inter-assay and inter-laboratory variation (reproducibility). We compared four immunochemical methods for the quantification of alpha-synuclein concentration in 50 unique CSF samples. All methods were designed to capture most of the existing alpha-synuclein forms in CSF ('total' alpha-synuclein). Each of the four methods showed high analytical precision, excellent correlation between laboratories (R-2 0.83-0.99), and good correlation with each other (R-2 0.64-0.93), although the slopes of the regression lines were different between the four immunoassays. The use of common reference CSF samples decreased the differences in alpha-synuclein concentration between detection methods and technologies. Pilot data on an immunoprecipitation mass spectrometry (IP-MS) method is also presented. Our results suggest that the four immunochemical methods and the IP-MS method measure similar forms of alpha-synuclein and that a common reference material would allow harmonization of results between immunoassays.
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