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为非向性GC-MS代谢物优化尿道提取方法.

Cara Olivier1, Bianca Allen1, Laneke Luies2

  • 1Human Metabolomics, North-West University, Potchefstroom Campus, Private Bag X6001, Box 269, Potchefstroom, 2520, NW, South Africa.

Scientific reports
|October 16, 2023
PubMed
概括

这项研究优化了一种直接分析 (DA) 方法,用于在非向气色谱-质谱 (GC-MS) 代谢学中低容量尿液的制备. 与有机酸提取方法相比,DA方法提供了更好的重复性和更广泛的代谢物覆盖范围.

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科学领域:

  • 代谢学 代谢学 代谢学
  • 分析化学 分析化学
  • 生物化学 生物化学

背景情况:

  • 尿液是用于非向代谢的宝贵生物流体,为细胞过程提供了洞察力.
  • 优化样品制备对于各种代谢物的全面分析至关重要.
  • 气色谱-质谱法 (GC-MS) 是一种强大的代谢分析分析技术.

研究的目的:

  • 为了优化用于非向GC-MS代谢的低容量尿液制备程序.
  • 为了比较直接分析 (DA) 方法与有机酸 (OA) 提取方法的有效性.
  • 提高尿道代谢分析中的代谢物覆盖,恢复和可重复性.

主要方法:

  • 评估了五种提取方法:四种OA变化和一种DA方法.
  • 基于可重复性,代谢组覆盖率和代谢物回收的评估方法.
  • 通过额外的干燥步骤优化了DA方法,并测试了尿酶预处理.

主要成果:

  • DA方法显示出卓越的重复性和最高的代谢组覆盖率 (91种独特的代谢物).
  • 氧化的方法显示偏向于特定的化合物类别,导致回收率较低,未检测到的化合物率更高.
  • 额外的干燥步骤改善了DA方法,而尿酸酶预处理没有任何好处.

结论:

  • 优化的DA方法在非向GC-MS代谢学中为低容量尿液制备提供了改进的方法.
  • 这种方法使尿路代谢产物的有效和全面分析成为可能.
  • 这些发现可以推进代谢学,帮助诊断疾病和发现生物标志物.