MESA Family Study - Columbia University Field Center

MESA 家庭研究 - 哥伦比亚大学实地中心

• 批准号: 6784686
• 负责人: Steven J Shea
• 金额: $ 41.88万
• 依托单位: COLUMBIA UNIVERSITY HEALTH SCIENCES
• 依托单位国家: 美国
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-08-01 至 2008-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6784686
• 关键词: Hispanic Americans; angiocardioultrasonography; atherosclerosis; calcium; cardiovascular disorder epidemiology; cardiovascular disorder risk; carotid artery; clinical research; computed axial tomography; coronary artery; family genetics; genetic screening; genetic susceptibility; human subject; linkage mapping; population genetics; quantitative trait loci; siblings

DESCRIPTION (provided by applicant): This is a first resubmission of the MESA Family Study, HL071205. The overall goals of the proposed MESA Family Study are to locate and identify genes contributing to sub-clinical cardiovascular disease (CVD), assessed by coronary calcium (CAC) and carotid intimal medial wall thickness (IMT) in U.S. minority populations. These goals will be addressed in a study of 2700 individuals from 900 sibships (sibtrios or larger), evenly distributed among African-Americans and Hispanic Americans, utilizing the existing framework of the NHLBI Multi-Ethnic Study of Atherosclerosis (MESA). In Aim 1, the MESA Family Study will determine the extent of genetic contribution to variation in CAC (EBCT and helical-gated CT scan) and IMT (B-mode ultrasound) in these two populations. This aim will be accomplished by examination (phenotyping) of 1800 siblings from 900 MESA index cases (evenly divided between African-Americans and Hispanic-Americans). In Aim 2, biological candidate regions in the human genome linked to these quantitative sub-clinical cardiovascular disease traits (coronary calcium and IMT) will be identified by genome scan approaches, including fine mapping of the best regions. This aim will use the MESA Study resources (Data Coordination Center, Central Laboratory, CT and Ultrasound Reading Center, 6 Clinical Field Centers) and the combined resources and cardiovascular genetic epidemiology expertise at Cedars-Sinai Medical Center and Wake-Forest School of Medicine. In Aim 3, gene localization and identification will be accomplished by association studies of positional as well as biological candidate genes in the subjects from the 3 minority populations of MESA (African-Americans, Hispanic-Americans, and Chinese-Americans). Whereas the purpose of MESA (the parent study) is to assess sub-clinical CVD and identify epidemiological risk factors in multi-ethnic populations, the purpose of the MESA Family Study is to identify the genes (quantitative trait loci, or QTLs) that contribute to these sub-clinical CVD risk factors. In combination with traditional risk factor assessment, identified inherited markers should be useful in the management of patients with vascular disease. These results will permit targeted diagnostic testing and pharmacologic intervention, and in the identification of subjects who could benefit from specific prevention protocols thus result in an increase in the overall well being of the US population.

描述（由申请人提供）：这是MESA家庭研究的首次再提交，编号为HL071205。MESA家族研究的总体目标是定位和鉴定导致亚临床心血管疾病（CVD）的基因，通过冠状动脉钙（CAC）和颈动脉内膜内壁厚度（IMT）在美国少数民族人群中进行评估。这些目标将在一项来自900个兄弟姐妹（兄弟姐妹或更大）的2700个人的研究中得到解决，这些研究平均分布在非洲裔美国人和西班牙裔美国人之间，利用NHLBI多种族动脉粥样硬化研究（MESA）的现有框架。在目的1中，MESA家族研究将确定这两个人群中CAC （EBCT和螺旋门状CT扫描）和IMT （b超）变异的遗传贡献程度。这一目标将通过对来自900个MESA指数病例（平均分为非洲裔美国人和西班牙裔美国人）的1800名兄弟姐妹进行检查（表型分析）来实现。在Aim 2中，人类基因组中与这些定量亚临床心血管疾病特征（冠状动脉钙和IMT）相关的生物学候选区域将通过基因组扫描方法确定，包括对最佳区域的精细定位。这一目标将利用MESA研究资源（数据协调中心、中央实验室、CT和超声阅读中心、6个临床领域中心）以及雪松-西奈医学中心和维克森林医学院的综合资源和心血管遗传流行病学专业知识。在目标3中，基因定位和鉴定将通过MESA 3个少数民族（非裔美国人、西班牙裔美国人和华裔美国人）受试者的位置和生物学候选基因的关联研究来完成。MESA（亲本研究）的目的是评估亚临床心血管疾病并确定多种族人群中的流行病学危险因素，而MESA家族研究的目的是确定导致这些亚临床心血管疾病危险因素的基因（数量性状位点，或qtl）。结合传统的危险因素评估，确定的遗传标记应该对血管疾病患者的管理有用。这些结果将允许有针对性的诊断测试和药物干预，并确定可以从特定预防方案中受益的受试者，从而增加美国人口的整体福祉。