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中国药学(英文版) ›› 2015, Vol. 24 ›› Issue (2): 73-79.DOI: 10.5246/jcps.2015.02.008

• 【研究论文】 •    下一篇

LC-MS/MS法测定尿二棕榈酰磷脂酰胆碱含量的方法学建立及其作为肾损伤标志物的研究

李丹丹1,2, 熊歆1, 白琼3, 杨文领3, 赵荣生1*, 张爱华3   

  1. 1. 北京大学第三医院 药剂科, 北京 100191
    2. 首都医科大学附属北京友谊医院 药剂科, 北京 100050
    3. 北京大学第三医院 肾内科, 北京 100191
  • 收稿日期:2014-11-02 修回日期:2014-11-17 出版日期:2015-02-01 发布日期:2014-11-30
  • 通讯作者: Tel.: 86-13910989410

Development and validation of an LC-MS/MS method for quantification of dipalmitoylphosphatidylcholine as a promising biomarker for renal failure in urine

Dandan Li1,2, Xin Xiong1, Qiong Bai3, Wenling Yang3, Rongsheng Zhao1*, Aihua Zhang3   

  1. 1. Department of Pharmacy, Peking University Third Hospital, Beijing 100191, China
    2. Department of Pharmacy, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
    3. Department of Nephrology, Peking University Third Hospital, Beijing 100191, China
  • Received:2014-11-02 Revised:2014-11-17 Online:2015-02-01 Published:2014-11-30
  • Contact: Tel.: 86-13910989410

摘要:

尿磷脂已被证实是非常灵敏的肾损伤标志物。然而, 关于磷脂的研究大部分为定性或相对定量研究。因此, 我们建立了定量测定尿中二棕榈酰磷脂酰胆碱(DPPC)的方法学来准确、特异测定尿中DPPC含量。采用HILIC Silica (2.1 mm×50 mm, 5 µm)色谱柱, 流动相为5 mM的甲酸铵乙腈进行梯度洗脱, 流速0.3 mL/min。该方法在2–200 ng/mL范围内线性良好, 精密度、准确性、回收率、稳定性、稀释效应、基质效应等均符合FDA关于生物样本的检测要求。该方法应用于尿中DPPC的含量测定, 并对DPPC作为肾损伤标志物的前景进行评价。

关键词: 二棕榈酰磷脂酰胆碱, 肾损伤, 液质联用, 尿液

Abstract:

Urinary phospholipids are shown to be sensitive biomarkers for kidney injury. Many works have been reported on qualitative analysis of phospholipids and relative components in human urine while quantitative analysis is rare. We have therefore developed a reliable and convenient quantitative method to evaluate the accuracy and specificity of dipalmitoylphosphatidylcholine (DPPC) as a biomarker for kidney injury diagnosis. Chromatographic separation was achieved using a HILIC Silica Column (2.1 mm×50 mm, 5 µm).Gradient elution was performed with 5 mM ammonium formate (0.1% formic acid) and acetonitrile (0.1% formic acid), at a flow rate of 0.3 mL/min. This method was validated in a linear range of 2200 ng/mL DPPC with inter-day precision of less than 6.5% and accuracy within 111.2% in human urine. Recovery rate, stability, dilution effect and matrix effect also met the requirements for drug evaluation and research issued by FDA. As the first HPLC-MS/MS method for quantitative determination of DPPC, it has been successfully applied to determine levels of DPPC in clinical urine samples and evaluated for potential use in the measurement of DPPC as a biomarker for kidney injury.

Key words: Dipalmitoylphosphatidylcholin, Kidney injury, Liquid chromatography-tandem mass spectrometry, Urin

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