NEUROANATOMICAL BIOMARKERS OF EARLY AD

AD 早期的神经解剖学生物标志物

• 批准号: 6989343
• 负责人: JOHN G CSERNANSKY
• 金额: $ 13.98万
• 依托单位: WASHINGTON UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-07-01 至 2010-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6989343
• 关键词: Alzheimer' s disease; apolipoprotein E; bioimaging /biomedical imaging; biomarker; brain morphology; cerebrospinal fluid; cingulate gyrus; clinical research; cognition; computational neuroscience; disease /disorder proneness /risk; entorhinal cortex; hippocampus; human middle age (35-64); human old age (65+); human subject; magnetic resonance imaging; neurochemistry; neuropathology

Alzheimer's disease (AD) is the most common dementing illness of late life, and robs persons of vigorous activity and productivity in their later years. Future drug treatments may be capable of slowing the progression of the disease or even preventing its clinical appearance, and when such treatments become available, the ability to detect the illness in its earliest stages will be needed to take full advantage of them. The overall goal of this project is to test the use of structural magnetic resonance scanning and the tools of computational anatomy to distinguish nondemented subjects at elevated risk for developing dementia of the Alzheimer type (DAT) from age- and gender-matched comparison subjects. The primary strategy for identifying subjects at elevated risk for developing DAT will be having a parent with DAT; allelic status for the apolipoprotein E gene will be a secondary strategy. High resolution magnetic resonance (MR) scans will be collected from all subjects at entry into the study, and for subjects who are recruited during the first two years of the Project, repeat MR scans will be collected after three years. The specific aims of the project include a comparison of the structural characteristics of the hippocampus, parahippocampal gyrus (including the entorhinal cortex) and cingulate gyrus (anterior and posterior segments) in nondemented subjects with (N = 120) and without (n = 120) a parent with DAT. The total group of subjects will then be resorted according to the number of E4 alleles for apolipoprotein E, and a comparison of subjects with or without one or more E4 alleles will be made. If there are neuroanatomical differences in the groups of subjects with and without one or more E4 alleles, then the impact of the apoE4 allele on the effect of having a parent with DAT will be investigated. In addition, we will determine whether there are correlations between neuroanatomical measures that discriminate between subjects at elevated risk for developing DAT and comparison subjects and other predictive variables assessed by other Projects.

阿尔茨海默病（AD）是晚年最常见的痴呆症，它会剥夺人们晚年的活力和生产力。未来的药物治疗可能能够减缓疾病的进展，甚至预防其临床表现，当这种治疗方法可用时，需要在疾病的最早阶段检测疾病的能力，以充分利用它们。该项目的总体目标是测试使用结构磁共振扫描和计算解剖学的工具，以区分非痴呆受试者的阿尔茨海默型痴呆症（DAT）的发展风险升高，从年龄和性别匹配的比较对象。识别DAT发生风险升高的受试者的主要策略是父母中有一人患有DAT;载脂蛋白E基因的等位基因状态将是次要策略。将在入组研究时收集所有受试者的高分辨率磁共振（MR）扫描，对于在项目前两年招募的受试者，将在三年后收集重复MR扫描。该项目的具体目标包括比较海马、海马旁回和海马回的结构特征，（包括内嗅皮层）和扣带回（前节和后节）。然后根据载脂蛋白E的E4等位基因的数量对总受试者组进行重新分类，并对具有或不具有一个或多个E4等位基因的受试者进行比较。如果在具有和不具有一个或多个E4等位基因的受试者组中存在神经解剖学差异，那么apoE 4等位基因对具有E4等位基因的效应的影响是不确定的。 将对患有DAT的父母进行调查。此外，我们还将确定神经解剖学指标之间是否存在相关性，这些指标可以区分DAT风险升高的受试者和比较受试者，以及其他项目评估的其他预测变量。