Volumetric Bone Density and Vascular Calcification: The Framingham QCT Study

体积骨密度和血管钙化：Framingham QCT 研究

• 批准号: 7201908
• 负责人: ELIZABETH J SAMELSON
• 金额: $ 10.02万
• 依托单位: HEBREW REHABILITATION CENTER FOR AGED
• 依托单位国家: 美国
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-06-01 至 2012-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7201908
• 关键词: Age; Area; Atherosclerosis; Biology; Bone Density; Boston; Cardiovascular Diseases; Clinical; Communities; Data; Densitometry; Development; Development Plans; Doctor of Philosophy; Elderly woman; Environment; Epidemiologist; Epidemiology; Event; Funding; Future; General Hospitals; Goals; Image; Institutes; Institution; Interdisciplinary Study; Israel; Knowledge; Lead; Ligands; Massachusetts; Measurement; Medical center; Mentors; Musculoskeletal; Musculoskeletal Diseases; Nuclear; Osteoporosis; Participant; Public Health; Purpose; Research; Research Personnel; Research Training; Risk; Role; Scanning; Serum; Severities; Specimen; Statistically Significant; TRANCE protein; Techniques; Testing; Training; Tumor necrosis factor receptor 11b; Vascular calcification; Vertebral column; Woman; X-Ray Computed Tomography; base; bone; bone imaging; career; improved; medical schools; men; programs; receptor; skills; substantia spongiosa

DESCRIPTION (provided by applicant): Elizabeth J. Samelson, PhD, is a well-trained musculoskeletal epidemiologist planning to develop new skills and expertise to investigate potential shared mechanisms underlying the relation between osteoporosis and vascular calcification. Specifically, the immediate career goal of the proposed training and research program is for the candidate to develop new skills and knowledge in two areas: (1) the biology of bone and vascular calcification and (2) the use of quantitative compute tomography (QCT) bone densitometry techniques to investigate the relation between bone and vascular calcification. The long-term career goal is for the candidate to become an independent investigator in the area of musculoskeletal disease and an expert in bone and vascular calcification, a new and poorly understood area, with the ultimate public health goal to help reduce the risk of osteoporosis (and possibly, in conjunction, atherosclerosis) and its devastating impact on elderly women and men. The research career development plan involves frequent, formal interactions with mentors who are independently funded, senior investigators with comprehensive and complementary areas of expertise and programs in osteoporosis epidemiology, vascular calcification, and bone imaging. Training will include participation in intensive, comprehensive courses and interdisciplinary research seminars conducted in the outstanding research environment in Boston, including the Institute for Aging Research (IFAR) at Hebrew SeniorLife (HSL), Harvard Medical School (HMS) and its affiliated institutions (Beth Israel Deaconess Medical Center, Massachusetts General Hospital), as well as the Framingham Study. The purpose of this study is to use QCT images performed in 3500 participants of the Framingham QCT Study (a large, community-based study of 1800 men and 1700 women, ages 40 through 90 years, mean 61 years) to determine volumetric, trabecular bone mineral density (vTBMD) of the spine and assess the relation between vTBMD level and severity of vascular calcification (assessed on the same scans). The study will use reliable, validated techniques to analyze the QCT images and combine these data with clinical information rigorously acquired for Framingham participants. Finally, the study will test the hypothesis that vTBMD will be positively related to serum level of osteoprotegerin (OPG), and inversely related to receptor activator of nuclear factor K-beta ligand (RANKL), and that OPG will explain a statistically significant proportion of the inverse correlation between vTBMD and vascular calcification in women and men. The relevance of the proposed study is that the results will improve understanding of the possible causes of osteoporosis also involved with the development of cardiovascular disease. Thus, the results of this study could lead to future therapies to treat and or event both osteoporosis and cardiovascular disease.

描述（由申请人提供）：Elizabeth J. Samelson博士是一位训练有素的肌肉骨骼流行病学家，计划开发新的技能和专业知识，以研究骨质疏松症和血管钙化之间关系的潜在共同机制。具体来说，拟议的培训和研究计划的直接职业目标是为候选人开发两个领域的新技能和知识：（1）骨和血管钙化的生物学和（2）使用定量计算机断层扫描（QCT）骨密度测定技术来调查骨和血管钙化之间的关系。长期的职业目标是候选人成为肌肉骨骼疾病领域的独立研究者和骨骼和血管钙化方面的专家，这是一个新的和知之甚少的领域，最终的公共卫生目标是帮助降低骨质疏松症的风险（以及可能的，结合动脉粥样硬化）及其对老年女性和男性的破坏性影响。研究职业发展计划涉及与独立资助的导师、具有全面且互补的专业知识领域的高级研究人员以及骨质疏松流行病学、血管钙化和骨成像项目的频繁、正式的互动。培训将包括参加在波士顿杰出的研究环境中进行的密集、综合课程和跨学科研究研讨会，包括希伯来老年生活（HSL）老龄化研究所（IFAR）、哈佛医学院（HMS）及其附属机构（贝斯以色列女执事医疗中心、马萨诸塞州总医院）以及Fraidian研究。本研究的目的是使用在3500名参与FractionalQCT研究的受试者中进行的QCT图像（一项大型的基于社区的研究，1800名男性和1700名女性，年龄40至90岁，平均61岁），以确定体积，脊柱骨小梁密度（vTBMD），并评估vTBMD水平与血管钙化严重程度之间的关系（在相同的扫描中进行评估）。本研究将使用可靠的、经验证的技术来分析QCT图像，并将这些数据与为Fracket参与者严格采集的临床信息结合联合收割机。最后，本研究将检验以下假设：vTBMD与骨保护素（OPG）血清水平呈正相关，与核因子K-β配体受体激活剂（RANKL）呈负相关，并且OPG将解释女性和男性中vTBMD与血管钙化之间负相关的统计学显著比例。这项研究的相关性在于，其结果将提高对骨质疏松症可能原因的理解，骨质疏松症也与心血管疾病的发展有关。因此，这项研究的结果可能会导致未来的治疗和/或事件骨质疏松症和心血管疾病。