色谱 ›› 2024, Vol. 42 ›› Issue (4): 345-351.DOI: 10.3724/SP.J.1123.2023.09016

• 研究论文 • 上一篇    下一篇

超高效液相色谱-三重四极杆质谱法测定心脏组织中腺苷含量

朱佐银1,2, 郭文博1, 赵含珂1, 王杰2, 杨俊花1,*(), 周新丽2   

  1. 1.上海市农业科学院农产品质量标准与检测技术研究所, 上海 201403
    2.上海理工大学健康科学与工程学院, 上海 200093
  • 收稿日期:2023-09-20 出版日期:2024-04-08 发布日期:2024-04-03
  • 通讯作者: Tel:(021)67131637,E-mail:yangjunhua303@126.com.
  • 基金资助:
    上海市科学技术委员会社会发展科技攻关项目(21DZ1201300)

Determination of adenosine content in heart tissue by ultra performance liquid chromatography-triple quadrupole mass spectrometry

ZHU Zuoyin1,2, GUO Wenbo1, ZHAO Hanke1, WANG Jie2, YANG Junhua1,*(), ZHOU Xinli2   

  1. 1. Institute for Agro-Food Standards and Testing Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
    2. School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
  • Received:2023-09-20 Online:2024-04-08 Published:2024-04-03
  • Supported by:
    Social Development Science and Technology Research Projects from Science and Technology Commission of Shanghai Municipality(21DZ1201300)

摘要:

采用超高效液相色谱-三重四极杆质谱(UPLC-MS/MS)建立了一种灵敏度高、特异性好,且能够快速准确检测心脏组织中腺苷含量的方法。将样品溶于含10 μmol/L稳定剂2-羟基-3-壬基腺嘌呤盐酸盐(EHNA)的1 mL超纯水中,低温研磨2 min, 60 Hz冰水浴超声萃取40 min。以甲醇和5 mmol/L醋酸铵溶液为流动相,流速为0.4 mL/min,柱温为40 ℃,进样量为3 μL,采用电喷雾离子源(ESI)正离子切换多反应监测(MRM)模式对心脏组织中的腺苷进行定性定量分析,以标准曲线外标法准确定量。结果显示,在检测范围内线性关系拟合较优,线性范围为0.1~160 ng/mL,相关系数(r2)为0.9930,检出限(LOD)为0.03 ng/mL,定量限(LOQ)为0.1 ng/mL;腺苷在鼠心脏组织低、中、高3个水平的加标回收率分别为113.6%、96.3%、102.9%,日内精密度为1.7%~8.4%,日间精密度为2.6%~7.4%。相关性和一致性分析结果表明,UPLC-MS/MS法和双抗体夹心法测量结果存在正偏倚,两种方法腺苷检测结果呈极显著的正相关(P<0.0001);采用该方法随机测定17份小鼠和17份大鼠心脏样品,小鼠和大鼠心脏组织中腺苷的含量范围为3.25~8.78 mg/kg和10.24~15.19 mg/kg,腺苷的平均含量分别为5.37 mg/kg和12.60 mg/kg。本研究为心脏组织腺苷含量的测定提供了一种简单、精确、高效的检测方法,可为临床研究和疾病诊断提供重要的技术支持。

关键词: 超高效液相色谱-三重四极杆质谱, 腺苷, 心脏组织

Abstract:

A method based on ultra performance liquid chromatography-triple quadrupole mass spectrometry (UPLC-MS/MS) was developed and validated for the rapid and accurate determination of adenosine (Ado) in cardiac tissues with high sensitivity and specificity. The samples were dissolved in 1 mL of ultrapure water containing 10 μmol/L 2-hydroxy-3-nonyladenine hydrochloride (EHNA) as a stabilizer, ground at low temperature for 2 min, and then ultrasonically extracted at 60 Hz in an ice-water bath for 40 min. Methanol and 5 mmol/L ammonium acetate solution were used as the mobile phases under a flow rate of 0.4 mL/min, a column temperature of 40 ℃ and an injection volume of 3 μL. The Ado in cardiac tissue was qualitatively and quantitatively analyzed by electrospray ionization (ESI) positive-ion-switching in multiple reaction monitoring (MRM) mode. A solvent standard curve and the external standard method were used for the accurate quantification of Ado. The results showed that the matrix effect of Ado in cardiac tissue was very low. A good linear relationship was obtained in the range of 0.1-160 ng/mL, and the correlation coefficient (r2) was 0.9930. The limits of detection (LOD) and quantification (LOQ) were 0.03 and 0.1 ng/mL, respectively. The spiked recoveries of Ado in murine cardiac tissue were 113.6%, 96.3%, and 102.9% at three spiked levels of low, medium, and high, respectively. The intra-day repeatability (RSDs) were 1.7%-8.4%, and the inter-day reproducibility (RSDs) were 2.6%-7.4%. Based on the correlation and consistency results, a positive bias was observed between the proposed UPLC-MS/MS method and the double-antibody sandwich method. Moreover, the Ado contents detected by these two methods were significantly positively correlated (P<0.0001). Cardiac tissue samples were collected from 17 mice and 17 rats and detected in our laboratory. The content ranges of Ado in the cardiac tissues of mice and rats determined by the developed UPLC-MS/MS method were 3.25-8.78 mg/kg and 10.24-15.19 mg/kg, respectively (average adenosine contents: 5.37 and 12.60 mg/kg, respectively). The developed method is simple, accurate, sensitive, and it is suitable for the determination of Ado in cardiac tissues. It also provides important technical support for cardiac clinical research and disease diagnosis.

Key words: ultra performance liquid chromatography-triple quadrupole mass spectrometry (UPLC-MS/MS), adenosine (Ado), cardiac tissue

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