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相关概念视频

Applications Of NMR In Biology01:25

Applications Of NMR In Biology

Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics  for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.
The...

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Identification and Quantification of Deranged Metabolites in Critically Ill Patients Using NMR-Based Metabolomics
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使用PRIMA小组验证NMR代谢学集中生物银行工作流程使用PRIMA小组.

Heidi Altmann1,2, Marko Barovic3, Katrin Straßburger3

  • 1Medical Clinic & Polyclinic 1, University Hospital and Faculty of Medicine Carl Gustav Carus of TU Dresden, Dresden 01307, Germany.

Analytical chemistry
|January 28, 2025
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概括

预分析因素,如延迟离心和冷,显著影响了代谢学研究. 一个名为PRIMA Panel的新工具有助于评估这些影响,并提高生物银行数据的可靠性.

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科学领域:

  • 代谢学 代谢学 代谢学
  • 这是生物银行.
  • 分析化学 分析化学

背景情况:

  • 分析前的因素对生物样品质量具有关键的影响.
  • 离心和冷的及时性是影响代谢物稳定性的关键预分析变量.

研究的目的:

  • 评估分析前延迟对血液样本中代谢物度的影响.
  • 开发一种对代谢物稳定性的预测模型和一种用于质量控制的实用工具.

主要方法:

  • 血液样本经过控制的离心前和离心后延迟.
  • 使用核磁共振 (NMR) 谱法量化了代谢物水平.
  • 使用线性混合模型来预测随时间变化的代谢物度变化.

主要成果:

  • 观察到显著的代谢物变化与短暂的预分析延迟 (例如,乳酸).
  • 引入了"稳定时间点"概念,以定义代谢物稳定值 (20%的变化).
  • 预测模型得到了验证,PRIMA小组工具在生物银行环境中开发和测试.

结论:

  • 追踪预分析因素对于提高代谢学数据的可靠性至关重要.
  • 普里马小组提供了一个实用的,开源的解决方案,用于评估生物库的分析前变性.
  • 这项工作改善了代谢学研究的质量控制和可重复性.