Journal
NEUROSCIENCE LETTERS
Volume 304, Issue 1-2, Pages 102-106Publisher
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/S0304-3940(01)01754-2
Keywords
Alzheimer disease; amyloid beta protein; alpha 1-antichymotrypsin; apolipoprotein E; enzyme linked immunosorbent assay
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We quantitated amyloid beta proteins 1-40 (A beta 40) and 1-42 (A beta 42), and alpha1-antichymotrypsin (ACT) in matched cerebrospinal fluid (CSF) and plasma of 50 patients with probable Alzheimer disease, and analyzed the relationships with age, sex, Mini-Mental State Examination (MMSE), and apolipoprotein E phenotype. There was no relation between CSF A beta 40 and A beta 42 levels with those of plasma. CSF and plasma A beta 40 and A beta 42 levels showed no association with age, sex, and MMSE score. There was a significant correlation between CSF ACT and plasma ACT levels. The data suggest that plasma ACT crosses the blood-brain barrier. However, a lack of correlation between CSF A beta 40 and A beta 42 levels with those of plasma suggests that A beta in CSF and plasma originates from different sources. (C) 2001 Elsevier Science Ireland Ltd. All rights reserved.
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