在人类脑脊液中分析类固醇面板的LC-MS/MS技术
Tereza Skodova1, Jana Vitku1, Ondrej Bradac2
1Institute of Endocrinology, Department of Steroids and Proteofactors, Narodni 8, 110 00, Prague 1, Czech Republic.
Neurochemistry international
|October 25, 2025
概括
这项研究开发了敏感的液体染色学-双重质谱法方法,用于分析大脑脊髓液 (CSF) 中的类固醇. 揭示了对正常压力脑症 (NPH) 患者类固醇水平的新见解,性别之间观察到显著差异.
科学领域:
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
- 分析化学 分析化学
背景情况:
- 大脑脊髓液 (CSF) 反映了大脑的代谢过程,并与神经系统保持密切联系.
- 神经系统是多种类固醇的目标和来源,使得CSF分析对于理解神经内分泌学至关重要.
研究的目的:
- 开发和验证强大,灵敏的液体染色体-并联质谱法 (LC-MS/MS) 方法,用于分析CSF中的未结合类固醇.
- 量化各种类型的类固醇,包括C19,C21和C18类固醇,使用带有和没有衍生产的方法.
- 为了研究正常压力头症 (NPH) 患者的类固醇概况.
主要方法:
- 开发和验证两个LC-MS/MS方法:一个没有衍生步骤的方法,一个带有衍生步骤的方法.
- 使用非衍生方法对10种C19,10种C21和3种C18类固醇进行分析.
- 使用衍生方法对11种C19和6种C21类固醇进行分析.
- 验证方法应用于从NPH患者的CSF样本.
主要成果:
- 非衍生法适用于大多数CSF类固醇,而衍生法对孕,17-hydroxypregnenolone和dehydroepiandrosterone (DHEA) 具有更好的敏感性.
- 在NPH患者中,发现一些类固醇 (11-ketodihydrotestosterone,epitestosterone,androsterone,epiandrosterone,7β-hydroxyepiandrosterone,7-ketoDHEA,21-deoxycortisol) 低于量化的极限.
- 在NPH受试者中,首次在CSF中量化了17-hydroxypregnenolone和11-deoxycortisol.
- 与患有NPH的女性相比,在男性中观察到显著更高的CSF丸激素和17-基孕水平.
结论:
- 开发的LC-MS/MS方法提供了对人类CSF中广泛的类固醇的敏感和强大的量化.
- 该研究提出了关于NPH患者中特定类固醇的存在和水平的新发现.
- 在NPH患者中发现了CSF类固醇水平 (和17-原) 的基于性别的差异,这表明这种情况可能起作用.
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