Leveraging Investments in the Seychelles Child Development Study to Enable Novel Investigations of Long-Term MeHg Exposure, Toxicity Mechanisms, and Health across the Life Course

利用对塞舌尔儿童发展研究的投资，对长期甲基汞暴露、毒性机制和整个生命周期的健康进行新颖的调查

• 批准号: 10320948
• 负责人: Edwin van Wijngaarden
• 金额: $ 30.09万
• 依托单位: UNIVERSITY OF ROCHESTER
• 依托单位国家: 美国
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-03-16 至 2024-12-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10320948
• 关键词: 13 year old; Address; Aging; Asthma; Attention; Autoantibodies; Autoimmune Responses; Benefits and Risks; Biochemistry; Biological; Biological Markers; Biometry; Blood Pressure; Blood specimen; Brain; Child; Child Development; Cohort Studies; Collection; Consumption; Data; Data Collection; Data Discovery; Databases; Development; Diet; Eating; Enrollment; Epidemiology; Equilibrium; Etiology; Fishes; Foundations; Funding; Future; Genes; Genetic; Glutathione; Government Agencies; Hair; Health; Health behavior; Height; Hip region structure; Human Genetics; Hypersensitivity; Immunoglobulins; International; Investigation; Investments; Life Cycle Stages; Link; Longitudinal Studies; Mammals; Masks; Measures; Medical History; Metabolism; Methylmercury Compounds; Mothers; Neurotoxins; Northern Ireland; Nutrient; Nutritional Biochemistry; Oceans; Ontology; Outcome; Oxidative Stress; Participant; Persons; Phenotype; Physical Function; Physical Performance; Physical assessment; Play; Polyunsaturated Fatty Acids; Population; Population Characteristics; Predisposition; Pregnancy; Preparation; Prospective Studies; Public Health; Questionnaires; Recording of previous events; Records; Research; Resources; Risk; Risk Factors; Role; Sampling; Schools; Science; Sea; Serum; Seychelles; Source; Sweden; Symptoms; Toxic effect; Toxicology; Translational Research; Uncertainty; United States National Institutes of Health; Update; Visualization; Weight; biobank; clinically relevant; cognitive function; cognitive performance; cohort; data access; data dictionary; data harmonization; data sharing; data standards; database structure; design; developmental toxicity; fatty acid metabolism; follow-up; immune function; improved; methylmercury exposure; novel; nutrition; prenatal; preservation; recruit; repository; sociodemographic factors; sociodemographics; statistics; stem; success; trend

For over 30 years the Seychelles Child Development Study (SCDS) has focused on examining the potential developmental risks associated with low-level methylmercury (MeHg) exposure stemming from daily ocean fish consumption during pregnancy, an issue of high public health significance. Our studies of over 3,000 participants have shown that nutrients, genetics, and maternal immune function play an important role. These findings provide important clues towards better understanding mechanisms of low-level MeHg toxicity and factors that may influence susceptibility. Our international research consortium includes four key partners with expertise in toxicology, epidemiology, biostatistics, nutritional biochemistry, and human genetics. The SCDS is a unique source of longitudinal data with extensive information on biomarkers and population characteristics. It is imperative that this resource is preserved, thoroughly documented, and enriched to realize its long-term scientific potential. The proposed study will lay the foundation for continued, integrative and translational science examining MeHg toxicity mechanisms and the long-term dynamics of low-level MeHg exposure. The current proposal has three specific aims. First, we will enrich the biorepository and outcomes database of the NC2 cohort for future studies of underlying mechanisms of MeHg toxicity and clinically-relevant phenotypes. We will re-examine 1,457 Nutrition Cohort 2 (NC2) participants who were recruited in 2008-2011 and are currently undergoing a 7-year examination. We will obtain hair and blood samples for future studies focusing on mechanisms of MeHg metabolism and toxicity. We will also collect data on medical history, sociodemographic factors, anthropometrics measures, health behaviors, and fish consumption, and we will link our study records with school examination records. Second, we will enrich the biorepository and outcome database of Main cohort study participants and their mothers to establish baseline data for novel prospective studies of MeHg toxicity across the life course. We will re-enroll the Main cohort (n=615; recruited in 1989-1990 and followed for 24 years) and their mothers (n=622, recruited in 1989-1990 and re- enrolled in 2013) and update data on health behaviors, sociodemographic factors, medical history, anthropometric measures, and fish consumption. We will collect hair and blood samples, and measure hair MeHg levels to estimate exposure across 30 years of follow up. In the Main cohort we will examine markers of autoimmune responses and correlate them with life course MeHg exposure estimates. Mothers will complete a brief assessment of physical and cognitive functioning. Finally, we will facilitate data access and sharing through improved data harmonization and discovery. We will develop an online Data Access Request and Visualization Application that will consist of a standardized data dictionary across all SCDS cohorts. It will allow users to explore our data through the visualization of descriptive statistics, and to request data and samples.

30多年来，塞舌尔儿童发展研究（SCDS）一直专注于研究 与日常海洋鱼类接触低水平甲基汞（MeHg）有关的发育风险 怀孕期间的消费，这是一个具有高度公共卫生意义的问题。我们对3000多名 与会者表明，营养素、遗传和母体免疫功能起着重要作用。这些 研究结果为更好地理解低水平甲基汞毒性机制提供了重要线索， 可能影响易感性的因素。我们的国际研究联盟包括四个主要合作伙伴， 毒理学、流行病学、生物统计学、营养生物化学和人类遗传学方面的专业知识。SCDS是 一个独特的纵向数据来源，具有关于生物标志物和人群特征的广泛信息。它 必须保护、彻底记录和丰富这一资源，以实现其长期目标 科学潜力。该研究将为今后的研究奠定基础， 科学研究甲基汞毒性机制和低水平甲基汞接触的长期动态。的 目前的建议有三个具体目标。首先，我们将丰富生物储存库和成果数据库， 第二次国家信息通报队列研究，以进一步研究甲基汞毒性的潜在机制和临床相关的 表型我们将重新检查2008-2011年招募的1，457名营养队列2（NC 2）参与者 目前正在接受为期7年的检查。我们将采集头发和血液样本用于未来的研究 重点研究甲基汞的代谢和毒性机制。我们还将收集病史数据， 社会人口因素，人体测量措施，健康行为和鱼类消费，我们将联系 我们的学习记录和学校的考试记录。第二，我们将丰富生物储备和成果 主要队列研究参与者及其母亲的数据库，以建立新的 对整个生命过程中甲基汞毒性的前瞻性研究。我们将重新入组主队列（n=615; 1989-1990年招募，随访24年）和其母亲（n=622，1989-1990年招募， 2013年入组），并更新有关健康行为，社会人口因素，病史， 人体测量和鱼类消费。我们将收集头发和血液样本，并测量头发 甲基汞水平，以估计30年随访期间的接触情况。在主要队列中，我们将检查 自身免疫反应，并将其与生命过程中的甲基汞接触估计值相关联。妈妈们将完成一个 对身体和认知功能进行简要评估。最后，我们将促进数据访问和共享 通过改进数据协调和发现。我们将制定在线数据访问请求， 可视化应用程序将包括所有SCDS队列的标准化数据字典。它将允许 用户通过可视化的描述性统计来探索我们的数据，并请求数据和样本。