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Confounding Factors Influencing Amyloid Beta Concentration in Cerebrospinal Fluid
Joint Authors
Zetterberg, Henrik
Bjerke, Maria
Blennow, kaj
Andreasen, Niels
Anckarsäter, Rolf
Wallin, Anders
Portelius, Erik
Minthon, Lennart
Andreasson, Ulf
Anckarsäter, Henrik
Source
International Journal of Alzheimer's Disease
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-07-15
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
Background.
Patients afflicted with Alzheimer's disease (AD) exhibit a decrease in the cerebrospinal fluid (CSF) concentration of the 42 amino acid form of β-amyloid (Aβ42).
However, a high discrepancy between different centers in measured Aβ42 levels reduces the utility of this biomarker as a diagnostic tool and in monitoring the effect of disease modifying drugs.
Preanalytical and analytical confounding factors were examined with respect to their effect on the measured Aβ42 level.
Methods.
Aliquots of CSF samples were either treated differently prior to Aβ42 measurement or analyzed using different commercially available xMAP or ELISA assays.
Results.
Confounding factors affecting CSF Aβ42 levels were storage in different types of test tubes, dilution with detergent-containing buffer, plasma contamination, heat treatment, and the origin of the immunoassays used for quantification.
Conclusion.
In order to conduct multicenter studies, a standardized protocol to minimize preanalytical and analytical confounding factors is warranted.
American Psychological Association (APA)
Bjerke, Maria& Portelius, Erik& Minthon, Lennart& Wallin, Anders& Anckarsäter, Henrik& Anckarsäter, Rolf…[et al.]. 2010. Confounding Factors Influencing Amyloid Beta Concentration in Cerebrospinal Fluid. International Journal of Alzheimer's Disease،Vol. 2010, no. 2010, pp.1-11.
https://search.emarefa.net/detail/BIM-513793
Modern Language Association (MLA)
Bjerke, Maria…[et al.]. Confounding Factors Influencing Amyloid Beta Concentration in Cerebrospinal Fluid. International Journal of Alzheimer's Disease No. 2010 (2010), pp.1-11.
https://search.emarefa.net/detail/BIM-513793
American Medical Association (AMA)
Bjerke, Maria& Portelius, Erik& Minthon, Lennart& Wallin, Anders& Anckarsäter, Henrik& Anckarsäter, Rolf…[et al.]. Confounding Factors Influencing Amyloid Beta Concentration in Cerebrospinal Fluid. International Journal of Alzheimer's Disease. 2010. Vol. 2010, no. 2010, pp.1-11.
https://search.emarefa.net/detail/BIM-513793
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-513793