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High-throughput polymer tip-electrospray ionization mass spectrometry for enhanced detection of neopterin and biopterin in clinical urine samples

机译:高通量聚合物尖端 - 电喷雾电离质谱,用于增强临床尿液中Neopterin和Biopterin的检测

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摘要

Urinary biopterin (Bio) and neopterin (Neo) are important markers for clinical diagnosis of hyperphenylalaninemia. Herein, we developed a high-throughput analysis method based on electrospray ionization mass spectrometry (ESI-MS) with polymer tips for the rapid quantitative detection of Bio and Neo in clinical urine samples. Different polymer tips were investigated. It is found that the best detection sensitivity was achieved with hydrophobic polymer tip, ie, polyethylene tips. The high-throughput polymer tip-ESI-MS method allowed a rapid analysis speed at similar to 40 seconds per sample. The limits of quantification (LOQ) (S/N = 10) for the detection of Bio and Neo were improved to be 5.0 ng/mL. Acceptable relative standard deviation (RSD) values for Neo and Bio were measured to be 12.2% and 13.4% for direct measurement of Bio and Neo in raw urine samples, respectively. Furthermore, Bio and Neo were directly quantified from 18 clinical urine samples by presented method. The ratios of urinary Bio-to-Neo were analyzed for diagnosis of hyperphenylalaninemia. The results demonstrated that the present polymer tip-ESI-MS method is a promising strategy for the rapid analysis of clinical samples.
机译:尿生物素(Bio)和Neopterin(Neo)是临床诊断的重要标志物,用于高苯甲喹啉症。在此,我们开发了一种基于电喷雾电离质谱(ESI-MS)的高通量分析方法,具有聚合物提示,用于在临床尿液中的快速定量检测生物和Neo的快速定量检测。研究了不同的聚合物提示。结果发现,使用疏水性聚合物尖端,即聚乙烯尖端实现了最佳的检测灵敏度。高通量聚合物Tip-ESI-MS方法允许快速分析速度与每种样品类似40秒。检测生物和NeO的定量限制(S / / N> = 10)得到改善为5.0ng / ml。测量NeO和Bio的可接受的相对标准偏差(RSD)值为12.2%和13.4%,用于直接测量生物和新尿液样本中的生物和Neo。此外,通过呈现的方法从18个临床尿液样本直接量化生物和NeO。分析了尿生物至Neo的比率进行诊断高苯甲基血症。结果表明,本发明的聚合物Tip-ESI-MS方法是快速分析临床样品的有希望的策略。

著录项

  • 来源
    《Journal of mass spectrometry: JMS》 |2019年第2期|共6页
  • 作者单位

    Jiangxi Prov Maternal &

    Child Hlth Hosp Neonatal Dis Screening Ctr Nanchang 330006 Jiangxi Peoples R China;

    Nanchang Univ Affiliated Hosp 1 Dept Cardiac Surg Nanchang 330006 Jiangxi Peoples R China;

    Jiangxi Prov Maternal &

    Child Hlth Hosp Neonatal Dis Screening Ctr Nanchang 330006 Jiangxi Peoples R China;

    Jiangxi Prov Maternal &

    Child Hlth Hosp Neonatal Dis Screening Ctr Nanchang 330006 Jiangxi Peoples R China;

    Jiangxi Prov Maternal &

    Child Hlth Hosp Neonatal Dis Screening Ctr Nanchang 330006 Jiangxi Peoples R China;

    Jiangxi Prov Maternal &

    Child Hlth Hosp Neonatal Dis Screening Ctr Nanchang 330006 Jiangxi Peoples R China;

    Jinan Univ Inst Mass Spectrometer &

    Atmospher Environm Guangzhou 510632 Guangdong Peoples R China;

    Jiangxi Prov Maternal &

    Child Hlth Hosp Neonatal Dis Screening Ctr Nanchang 330006 Jiangxi Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分析化学;
  • 关键词

    biopterin; clinical urine samples; high-throughput analysis; neopterin; polymer tip; tip-electrospray ionization;

    机译:生物型;临床尿液样本;高通量分析;Neopterin;聚合物尖端;尖端电喷雾电离;

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