Cognitive Function, Alzheimer's Disease and Related Disorders in the HAALSI Cohort

HAALSI 队列中的认知功能、阿尔茨海默病和相关疾病

• 批准号: 10465039
• 负责人: LISA F BERKMAN
• 金额: $ 74.25万
• 依托单位: HARVARD SCHOOL OF PUBLIC HEALTH
• 依托单位国家: 美国
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-30 至 2024-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10465039
• 关键词: Affect; Africa; Africa South of the Sahara; Aging; Alleles; Alzheimer' s Disease; Alzheimer' s disease related dementia; Alzheimer' s disease risk; Apolipoprotein E; Binding; Biological; Blood; Blood Glucose; Blood Vessels; Brain; Cerebrovascular Disorders; Cerebrovascular system; China; Clinical; Cognition; Cognitive; Cognitive aging; Collection; Communities; Country; Data Collection; Dementia; Diagnosis; Disease; Elderly; Epidemiology; Etiology; Europe; Event; Family; Frequencies; Future; Genetic; Genetic Risk; Goals; HIV; HIV Infections; Health; Health and Retirement Study; Hypertension; Impaired cognition; Incidence; India; Interview; Longitudinal Studies; Longitudinal cohort; Magnetic Resonance Imaging; Measures; Mediating; Medical; Methods; Mexico; Neurologist; Neuropsychology; Normal Range; Outcome; Participant; Physicians; Population; Population Research; Prevalence; Protocols documentation; Risk; Risk Factors; Schools; Sex Differences; Sister; Site; Social Network; South Africa; South African; Standardization; Testing; Thick; Vascular Diseases; Venous; Woman; adjudicate; age difference; aged; aging brain; base; childhood adversity; cognitive change; cognitive function; cognitive testing; cohort; dementia risk; experience; falls; follow-up; functional decline; functional outcomes; high risk; hypercholesterolemia; imaging biomarker; informant; literacy; member; men; mild cognitive impairment; neuroimaging marker; novel; polygenic risk score; population based; programs; psychosocial; rural South Africa; screening; social; social engagement; vascular risk factor

ABSTRACT: Cognitive Function, Alzheimer's Disease and Related Disorders (ADRD) in HAALSI The overarching goal of this study is to identify the incidence and prevalence of Alzheimer's Disease and Re- lated Dementias (ADRD) and associated biological and social risk factors in a population-based cohort of South African men and women aged 40 and over (n=5059) living in Agincourt, South Africa. The Health and Aging in Africa: A Longitudinal Study of an INDEPTH Community in South Africa (HAALSI) has completed its first wave and continues for two additional waves through 2021, providing over 6 years of follow-up. HAALSI was developed as a harmonized sister study to the US Health and Retirement Study (HRS) and other global studies. In 2016, we launched the HAALSI Dementia Study, including all probable cases of dementia within HAALSI, and a subsample of HAALSI participants with normal cognition and mild cognitive impairment (MCI) for more detailed cognitive, clinical, and functional assessments (n= 607). The approach of the currently pro- posed extension of the HAALSI Dementia Study is to field two additional waves of enriched assessments sup- plemented with MRIs to obtain more detailed information on social and biological risk factors for ADRD in the HAALSI cohort. We will add new cases of probable dementia based on cognitive screening in future HAALSI waves to gather longitudinally accurate incidence and prevalence rates over 6 years. AIM 1: Estimate the incidence and prevalence of ADRD and characterize cognitive function and change in the HAALSI cohort. With 6 years of longitudinal information, we have 3 waves of sensitive neuropsycholog- ical measures, clinical and informant assessments, and functional outcomes. We estimate prevalent and inci- dent dementia cases and describe trajectories of cognitive aging, and describe structural markers of brain ag- ing via an MRI substudy. AIM 2: Evaluate biological predictors of incident dementia, cognitive function and decline, and brain aging. We use MRI to measure regional volume, cortical thickness, and markers of small and large vessel cerebrovascular disease. We assess associations between neuroimaging biomarkers, dementia, and cognitive impairment and associations with HIV and vascular disease. Venous blood collection enables us to evaluate known genetic risks for ADRD, such as Apolipoprotein E (APOE)-E4 allele, ATP- binding cassette sub-family A member 7 (ABCA7) and AD polygenic risk scores in this novel population. AIM 3: Evaluate social risks factors for incident dementia and cognitive impairment and decline. We will administer psychosocial measures to examine the extent to which dementia, cognitive decline, and brain func- tion are affected by educational experience, social engagement and networks, and childhood adversity. We will explore mediating relationships between biological and social risk factors on outcomes. Our study makes an important contribution to understanding ADRD, cognition, and brain aging in sub-Saharan Africa where many countries are experiencing rapid demographic and epidemiologic transitions.

摘要：HAALSI 中的认知功能、阿尔茨海默病及相关疾病 (ADRD) 这项研究的总体目标是确定阿尔茨海默氏病的发病率和患病率以及重新 基于人群的队列中的迟发性痴呆（ADRD）以及相关的生物和社会危险因素 居住在南非阿金库尔的 40 岁及以上南非男性和女性 (n=5059)。健康与 非洲老龄化：南非 INDEPTH 社区的纵向研究 (HAALSI) 已完成 第一波，并在 2021 年继续进行另外两波，提供超过 6 年的后续行动。哈尔西 是作为美国健康与退休研究 (HRS) 和其他全球研究的协调姊妹研究而开发的 研究。 2016 年，我们启动了 HAALSI 痴呆症研究，包括境内所有可能的痴呆症病例 HAALSI 以及具有正常认知和轻度认知障碍 (MCI) 的 HAALSI 参与者的子样本 进行更详细的认知、临床和功能评估 (n= 607)。目前亲的做法 HAALSI 痴呆症研究的扩展是开展两波额外的丰富评估，以支持 辅以 MRI，以获得有关 ADRD 社会和生物风险因素的更详细信息 HAALSI 队列。我们将在未来的 HAALSI 中根据认知筛查添加可能患有痴呆症的新病例 波以收集 6 年来纵向准确的发病率和患病率。 目标 1：估计 ADRD 的发生率和患病率并描述认知功能和变化的特征 在 HAALSI 队列中。凭借 6 年的纵向信息，我们拥有 3 波敏感的神经心理学- 物理测量、临床和信息评估以及功能结果。我们估计流行和新兴 识别痴呆病例并描述认知衰老的轨迹，并描述大脑活性的结构标记 通过 MRI 子研究。目标 2：评估痴呆事件的生物预测因素、认知功能 和衰退，以及大脑老化。我们使用 MRI 来测量区域体积、皮质厚度和标记物 小血管和大血管脑血管疾病。我们评估神经影像生物标志物之间的关联， 痴呆、认知障碍以及与艾滋病毒和血管疾病的关联。静脉血采集 使我们能够评估 ADRD 的已知遗传风险，例如载脂蛋白 E (APOE)-E4 等位基因、ATP- 结合盒亚家族 A 成员 7 (ABCA7) 和这个新人群中的 AD 多基因风险评分。目的 3：评估痴呆症和认知障碍及衰退的社会风险因素。我们将 采取心理社会措施来检查痴呆、认知能力下降和大脑功能的程度 教育经历、社会参与和网络以及童年逆境都会影响他们。我们将 探索生物和社会风险因素对结果的中介关系。 我们的研究为了解撒哈拉以南地区的 ADRD、认知和大脑衰老做出了重要贡献 非洲许多国家正在经历快速的人口和流行病学转变。