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Title: The platelet amyloid precursor protein ratio as a diagnostic marker for Alzheimer's disease in Thai patients
Authors: Chatchawan Srisawat
Sarawut Junnu
Chayanon Peerapittayamongkol
Aree Futrakul
Rungtip Soi-Ampornkul
Vorapun Senanarong
Rungnirand Praditsuwan
Prasert Assantachai
Neelobol Neungton
Mahidol University
Keywords: Medicine;Neuroscience
Issue Date: 1-May-2013
Citation: Journal of Clinical Neuroscience. Vol.20, No.5 (2013), 644-648
Abstract: The platelet amyloid precursor protein (APP) ratio has recently been shown to be a promising diagnostic marker for Alzheimer's disease (AD). To evaluate its usefulness in Thai patients, platelet APP was analyzed by immunoblotting. The APP ratio was calculated as the ratio of the combined band density of the 120-kD and 130-kD isoforms compared to that of the 110-kD isoform. The mean ages (and ranges) of 27 normal and 13 AD-affected subjects were 68.3 (60-84) and 79.3 (70-97) years, respectively. The Thai Mental State Examination (TMSE) scores demonstrated that the AD patients had significantly poorer cognitive functions than the normal subjects, with mean TMSE scores of 20.3 and 27.6 (maximum score of 30 points), respectively (p < 0.05). The platelet APP ratios of the AD patients were significantly lower than those of normal subjects: values (mean ± standard deviation) were 7.32 ± 1.29 and 9.13 ± 3.00, respectively (p < 0.05) for AD patients and normal subjects. However, the ranges of the APP ratios from both groups markedly overlapped, which precluded the establishment of a cutoff level to differentiate between the AD and normal subjects. In addition, no significant correlations were observed between the platelet APP ratio and the TMSE score or between the APP ratio and the serum cholesterol in this study, in contrast to previous reports. © 2012 Elsevier Ltd. All rights reserved.
ISSN: 15322653
Appears in Collections:Scopus 2011-2015

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