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The dynamics of Alzheimer's disease biomarkers in the Alzheimer's Disease Neuroimaging Initiative cohort

被引：109
作者：
Caroli, A. [1 ,2 ]
Frisoni, G. B. [1 ]
机构：
[1] IRCCS S Giovanni di Dio FBF, LENITEM, Lab Epidemiol Neuroimaging & Telemed, I-25125 Brescia, Italy
[2] Mario Negri Inst Pharmacol Res, Dept Biomed Engn, Med Imaging Unit, I-24100 Bergamo, Italy
来源：
NEUROBIOLOGY OF AGING | 2010年 / 31卷 / 08期
基金：
美国国家卫生研究院;
关键词：
Alzheimer's disease; Alzheimer's Disease Neuroimaging Initiative dataset; Biomarker dynamics; Cerebro-spinal fluid A beta 42; Tau; Hippocampal volume; FDG-PET; MILD COGNITIVE IMPAIRMENT; CEREBROSPINAL-FLUID; HIPPOCAMPAL VOLUME; APOLIPOPROTEIN-E; GLUCOSE-METABOLISM; STRUCTURAL MRI; CSF BIOMARKERS; TAU-PROTEIN; BRAIN; DEMENTIA;
D O I：
10.1016/j.neurobiolaging.2010.04.024
中图分类号：
R592 [老年病学]; C [社会科学总论];
学科分类号：
03 ; 0303 ; 100203 ;
摘要：
The aim of this study was to investigate the dynamics of four of the most validated biomarkers for Alzheimer's disease (AD), cerebro-spinal fluid (CSF) A beta 1-42, tau, hippocampal volume, and FDG-PET, in patients at different stage of AD. Two hundred twenty-nine cognitively healthy subjects, 154 mild cognitive impairment (MCI) patients converted to AD, and 193 (95 early and 98 late) AD patients were selected from the Alzheimer's Disease Neuroimaging Initiative (ADNI) database. For each biomarker, individual values were Z-transformed and plotted against ADAS-cog scores, and sigmoid and linear fits were compared. For most biomarkers the sigmoid model fitted data significantly better than the linear model. A beta 1-42 time course followed a steep curve, stabilizing early in the disease course. CSF tau and hippocampal volume changed later showing similar monotonous trends, reflecting disease progression. Hippocampal loss trend was steeper and occurred earlier in time in APOE epsilon 4 carriers than in non-carriers. FDG-PET started changing early in time and likely followed a linear decline. In conclusion, this study provides the first evidence in favor of the dynamic biomarker model which has recently been proposed. (C) 2010 Elsevier Inc. All rights reserved.
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页码：1263 / 1274
页数：12
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