在使用液体染色学-并联质谱法 (LC-MS/MS) 的短试点脂中进行多类类型的类固醇分析
Jillian H Wisse1, Douglas P Nowacek2,3, Ashley S P Boggs4
1Department of Medicine, Duke University, Durham, North Carolina, USA.
Rapid communications in mass spectrometry : RCM
|January 12, 2025
概括
这项研究验证了液体染色学-并联质谱法 (LC-MS/MS) 方法,用于量化鱼脂中的类固醇激素. 优化的C18方法准确地测量了11种激素中的9种,为野生动物研究提供了可靠的工具.
科学领域:
- *内分泌学和野生动物生物学
- * 分析化学和质谱学
背景情况:
- * 在各种野生动物组织中越来越需要验证的类固醇激素量化.
- *在野生动物科学中应用新型分析方法需要严格的验证.
- *专注于短飞行员 (Globicephala macrorhynchus) 和它们的油脂基质.
研究的目的:
- *为了验证液体染色学-并联质谱法 (LC-MS/MS) 方法在试点油中进行类固醇激素分析.
- * 评估优化C18和现有双方法的准确性和精度.
- * 评估内部标准 (IS) 选择对量化的影响.
主要方法:
- * 优化LC-MS/MS方法使用C18列为七种类固醇激素.
- * 尖峰回收实验以确定准确度 (百分比回收) 和精度 (RSD).
- *对每个分析物进行多个内部标准 (IS) 的比较,以评估可替代性.
主要成果:
- *对11种上腺和淋巴腺分析的高精度 (82110%恢复) 和精度 (<10%RSD).
- *C18方法成功量化了11种分析物中的9种在内源水平上;没有检测到阿尔多.
- *检测到DHEA,但显示出很高的变化;10个分析对象可以使用可比准确度的替代IS.
结论:
- *C18LC-MS/MS方法可靠量化鱼脂中的九种关键类固醇激素.
- * 该方法对内源性阿尔多的灵敏度不足;由于可变性,DHEA量化需要进一步调查.
- *经过验证的方法支持鱼的内分泌评估,通过IS替代可能节省成本.
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