Cited by 89Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsCerebrospinal fluid and hydrocephalus

Assessment of Amyloid β Protein in Cerebrospinal Fluid as an Aid in the Diagnosis of Alzheimer's Disease

Southwick, Paula C., Yamagata, Susan K., Echols, Charles L., Higson, Gail J., Neynaber, Scott A., Parson, Robert E., Munroe, William A.·1996·Journal of Neurochemistry

Abstract

Abstract: The principal constituent of amyloid plaques found in the brains of individuals with Alzheimer's disease (AD) is a 39–42‐amino‐acid protein, amyloid β protein (Aβ). This study examined whether the measurement of Aβ levels in CSF has diagnostic value. There were 108 subjects enrolled in this prospective study: AD (n = 39), non‐AD controls (dementing diseases/syndromes; n = 20), and other (n = 49). CSF was obtained by lumbar puncture, and Aβ concentrations were determined using a dual monoclonal antibody immunoradiometric sandwich assay. The mean Aβ value for the AD group (15.9 ± 6.8 ng/ml) was not significantly different from that for the non‐AD control group (13.0 ± 7.1 ng/ml; p = 0.07), and substantial overlap in results were observed. Aβ values did not correlate with age (r = −0.05, p = 0.59), severity of cognitive impairment (r = 0.22, p = 0.21), or duration of AD symptoms (r = 0.14, p = 0.45). These findings are in conflict with other reports in the literature; discrepant results could be due to the instability of Aβ in CSF. Aβ immunoreactivity decays rapidly under certain conditions, particularly multiple freeze/thaw cycles. Use of a stabilizing sample treatment buffer at the time of lumbar puncture allows storage of CSF without loss of Aβ reactivity. In conclusion, the total CSF Aβ level is not a useful marker for current diagnosis of AD.

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Crossref · 10.1046/j.1471-4159.1996.66010259.x

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Authors
Southwick, P. C., Yamagata, S. K., Echols, C. L., Higson, G. J., Neynaber, S. A., Parson, R. E., & Munroe, W. A.
Affiliations
Barrow Neurological Institute (US)
Corresponding author
Southwick, Paula C.
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
1996-01
Volume
66
Issue
1
Pages
259-265
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W1991413414
Cited by
89
References
0
Citations by year
2024: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2018: 2 · 2017: 3 · 2016: 3 · 2015: 1 · 2014: 2 · 2013: 6 · 2012: 2
FWCI
7.09
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Cerebrospinal fluid and hydrocephalus
Keywords
amyloid-beta, cerebrospinal fluid, Alzheimer's disease, diagnostic biomarkers, amyloid plaques, freeze-thaw cycles, cognitive impairment, immunoradiometric assay
MeSH terms
Adolescent, Adult, Aged, Aged, 80 and over, Alzheimer Disease, Autoimmune Diseases, Mental Disorders, Cerebrospinal Fluid Proteins, Female, Humans, Infections, Inflammation, Male, Metabolic Diseases, Middle Aged, Nervous System Diseases, Predictive Value of Tests, Prospective Studies, Biomarkers, Prevalence, Amyloid beta-Peptides

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