Sao Paulo- MInas Gerais Neglected Tropical Disease Research Center for Biomarker

圣保罗-米纳斯吉拉斯州被忽视的热带疾病生物标记研究中心

• 批准号: 8516920
• 负责人: Ester Cerdeira Sabino
• 金额: $ 28.19万
• 依托单位: FUNDACAO FACULDADE DE MEDICINA
• 依托单位国家: 美国
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8516920
• 关键词: Address; Admission activity; Aftercare; Age; Algorithms; Amyloid; Antibodies; Area; Benznidazole; Bioinformatics; Biological Assay; Biological Markers; Blood; Blood donor; Blood donor screening; Blood specimen; Brazil; CCL2 gene; Candidate Disease Gene; Cardiac; Cardiology; Cessation of life; Chagas Cardiomyopathy; Chagas Disease; Clinical; Clinical Trials; Coagulation Process; Code; Cohort Studies; Collaborations; Commit; Consensus; DNA; Data; Databases; Development; Disease; Disease Progression; Echocardiography; Electrocardiogram; Enrollment; Epidemiologist; Epidemiology; Evaluation; Foundations; Funding; Future; Gelatinase B; Gender; Gene Expression; Gene Expression Profile; Gene Expression Profiling; Genetic Transcription; Genomics; Goals; Health; Health system; Heart Diseases; Hospitals; Human Resources; IL8 gene; Immune; Individual; Infection; Infectious Diseases Research; Inflammation; Institutes; Interleukin-1; Interleukin-10; Interleukin-6; Laboratories; Leishmania; Leprosy; Mathematics; Measures; Messenger RNA; Modeling; Myoglobin; NT-proBNP; National Heart, Lung, and Blood Institute; Natural History; Natural Immunity; One-Step dentin bonding system; Parasitemia; Parasites; Patients; Performance; Peripheral Blood Mononuclear Cell; Peroxidases; Pharmaceutical Preparations; Plasma; Plasminogen Activator Inhibitor 1; Population; Procedures; Process; Proteomics; Public Health; Questionnaires; RNA; Reading; Recording of previous events; Registries; Relative (related person); Research; Research Infrastructure; Research Personnel; Research Training; Resources; Retroviridae; Risk; Sampling; Sampling Studies; San Francisco; Scientist; Selectins; Series; Serological; Serum; Serum amyloid A protein; Solutions; Staging; Strategic Planning; Subgroup; Surrogate Markers; System; Technology; Testing; Therapeutic; Therapeutic Intervention; Time; Training Programs; Tropical Disease; Troponin I; Trypanosoma cruzi; Universities; Validation; Variant; Visit; Whole Blood; Work; adiponectin; adjudicate; base; care systems; chemokine; clinical care; clinical efficacy; cohort; cytokine; data management; efficacy trial; experience; forest; high risk; indexing; inflammatory marker; meetings; neglect; novel; programs; response; sample collection; standard care; standard of care; statistics; symposium; tool

Our long term goal is to establish SaMi-Trop as a Center of Excellence for Neglected Infectious Disease Research in Brazil. The Specific Aims of the current application are to begin that process by focusing on T. cruzi infection with the goal of finding an array of biomarkers that correlate with parasite persistence and Chagas cardiac disease that can be used to infer risk of disease progression and death as well used as surrogate markers of cure or efficacy of novel drugs. We will develop three interrelated studies: Project 1 will focus on applying gene expression tools to existing whole blood RNA samples from the NHLBI REDS-II cohort to discover and validate new biomarkers of active infection and disease progression, these will be combined with parasite specific (PCR load and antibody profiling and titers) and plasma proteomic biomarkers (chemokines, cytokines, and inflamatory, coagulation and cardiac parameters) that are being generated through already funded collaborations, to generate composite biomarker profiles and scores that coorelate with pre-defined disease stages. In Project 2 we plan to treat a subgroup of 100 T cruzi PCR-positive patients from the REDS-II cohort using standard treatment with benznidazole (BZN) and follow subjects for 2 years after treatment. We will use these samples to validate the utility of biomarkers and composite biomarker profiles found in project 1 for assessment of therapeutic responses including clearance or suppression of parasitemia or normalization of immune perturbations and markers of cardiac damage. In Project 3 we plan to take advantage of the Public Health System in the State of Minas by enrolling and collecting blood samples from 2000 Chagas disease patients. These patients will be followed for two years for the endpoints of death or admission to a hospital for cardiac disease. The main goal is to obtain a simple risk score based on biomarker levels and ECG fndings that could identify high risk patients in order to guide therapeutic approaches and serve as a foundation for future clinical trials. Two cores will be established: the Administrative Core and Database and Epidemiology Core that will support activities of the 3 projects, as well as create and sustain research training capacity for young Brazilian scientists.

我们的长期目标是将Sami-trop建立为巴西被忽视的传染病研究的卓越中心。目前应用的具体目标是通过专注于克氏毛滴虫感染开始这一过程，目标是找到一系列与寄生虫持久性和查加斯心脏病相关的生物标记物，可用于推断疾病进展和死亡的风险，以及用作新药治愈或疗效的替代标记物。我们将开展三项相互关联的研究：项目1将专注于将基因表达工具应用于来自NHLBI Reds-II队列的现有全血RNA样本，以发现和验证活跃感染和疾病进展的新生物标记物，这些将与寄生虫特异性(聚合酶链式反应负载、抗体谱和滴度)和血浆蛋白质组生物标记物(趋化因子、细胞因子、炎症、凝血和心脏参数)相结合，以生成与预先定义的疾病阶段相关的复合生物标记物概况和评分。在项目2中，我们计划使用标准的苯硝唑(BZN)治疗REDS-II队列中100名T-CRUZI阳性患者的亚组，并在治疗后对受试者进行2年的跟踪。我们将使用这些样本来验证在项目1中发现的生物标记物和复合生物标记物配置文件用于评估治疗反应的有效性，包括清除或抑制寄生虫血症或使免疫紊乱和心脏损伤标记物正常化。在项目3中，我们计划利用米纳斯州的公共卫生系统，登记和采集2000名恰加斯病患者的血液样本。这些患者将接受为期两年的跟踪调查，以确定死亡或因心脏病入院的终点。主要目标是根据生物标记物水平和心电图基础获得一个简单的风险评分，以识别高危患者，以便指导治疗方法，并作为未来临床试验的基础。将建立两个核心：行政核心和数据库以及流行病学核心，将支持这3个项目的活动，并建立和维持巴西青年科学家的研究培训能力。