METHODS MONITOR TOXIC SUBSTAN AND/OR INDICATORS OF PRESENCE IN HUMANS&OTHER SPE

监测人类体内有毒物质和/或存在指标的方法

• 批准号: 7183243
• 负责人: BRUCE D HAMMOCK
• 金额: $ 1.24万
• 依托单位: UNIVERSITY OF CALIF-LAWRNC LVRMR NAT LAB
• 依托单位国家: 美国
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-09-01 至 2006-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7183243
• 关键词: analytical method; biomedical equipment resource; clinical research; mass spectrometry; method development; technology /technique development

DESCRIPTION (provided by applicant): The National Resource for Accelerator Mass Spectrometry (AMS) was established in 1999 to enable biomedical researchers to accurately quantify very low levels of radioisotopes while exploring fundamental issues in biology. In this renewal, we will expand our present capabilities by developing methods to study biochemical pathways and cellular processes at the level of the single cell and small groups of cells, which will allow our collaborators to study the effect of aging in yeast. The Resource will also develop methods to quantify endogenous processes, such as protein and DNA oxidation in higher organisms. This will facilitate the study of inflammatory diseases ranging from atherosclerosis to neurodegenerative disorders to cancer. To further these goals, we will develop a sample presentation technology that will enable the analysis of much smaller samples than can be currently processed, as well as techniques for speciation of biomolecules in such samples. Throughout the tenure of the grant we will continue to provide a resource to the research community that will include service to investigators familiar with AMS, training of investigators in the technology and dissemination of the Resource. Towards these goals, our specific aims are to: 1.) Develop protocols for the online combustion of eluents from separatory instruments and couple the products to a gas accepting ion source to increase the sensitivity of AMS. 2.) Increase the value and information content of AMS measurements by quantitating isotope content in isolates of uniformly isotope-labeled systems or by quantitating derivatized biomarkers of modification or function on specific macromolecules. 3.) Provide quantitation of effector and effect in biological systems using multiple isotopic tracers within sampled materials. We will achieve this by developing a robust and higher throughput process for 3H sample preparation and by leveraging against other funded isotope measurements at the Center for Accelerator Mass Spectrometry (CAMS). 4.) Provide high throughput and precise quantitation for collaborative and service users.

描述（由申请人提供）：国家加速器质谱资源（AMS）成立于1999年，旨在使生物医学研究人员能够在探索生物学基本问题时准确量化极低水平的放射性同位素。在这次更新中，我们将通过开发研究单细胞和小细胞群水平的生化途径和细胞过程的方法来扩展我们现有的能力，这将使我们的合作者能够研究酵母老化的影响。该资源还将开发量化内源性过程的方法，例如高等生物中的蛋白质和DNA氧化。这将促进从动脉粥样硬化到神经退行性疾病到癌症等炎症性疾病的研究。为了进一步实现这些目标，我们将开发一种样品呈现技术，该技术将能够分析比目前可以处理的小得多的样品，以及这些样品中生物分子的物种形成技术。在拨款期间，我们将继续为研究界提供资源，包括为熟悉辅助医疗系统的研究人员提供服务，培训研究人员的技术和传播资源。为了实现这些目标，我们的具体目标是：