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LC-MS/MS 法测定抑郁症患者晨尿中 9 种氨基酸类内源性物质
的浓度 Δ
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宋红艳 ,夏敬胜 ,纪刚剑 ,任章焘 ,张相林 ,柳 芳 ,陈 灵 (1.武汉市第三医院/武汉大学附属同仁医院药
1*
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学部,武汉 430060;2.中日友好医院药学部,北京 100029)
中图分类号 R969 文献标志码 A 文章编号 1001-0408(2020)01-0091-08
DOI 10.6039/j.issn.1001-0408.2020.01.16
摘 要 目的:建立测定人体尿液中5-羟基吲哚乙酸、谷氨酰胺、马尿酸、庚二酸、脯氨酸、酪氨酸、色氨酸、酪胺、缬氨酸浓度的方
法。方法:采集抑郁症患者的晨尿,加入内标可的松,以乙腈处理后取上清液进行浓缩,采用液相色谱-质谱串联法(LC-MS/MS)进
行分析。色谱柱为XTerra RP18;流动相A相为0.1%乙酸-水,流动相B相为0.1%乙酸-乙腈(梯度洗脱);柱温为40 ℃;流速为0.45
mL/min;采用电喷雾离子源(ESI),以多反应监测方式(MRM)进行定量分析,5-羟基吲哚乙酸、谷氨酰胺、马尿酸、庚二酸、脯氨酸、
酪氨酸、色氨酸、酪胺、缬氨酸和内标可的松在正离子模式下定量分析离子对分别为质荷比(m/z)192.2→146.1、147.2→130.0、
180.1→105.1、161.1→125.2、116.1→70.2、205.2→188.2、138.2→121.1、182.0→123.0、118.2→72.1、361.2→163.0。结果:5-羟基吲哚
乙酸、谷氨酰胺、缬氨酸、庚二酸、脯氨酸、酪胺的检测质量浓度范围为10.00~3 200 ng/mL(r=0.993 8~0.998 9,n=6),定量下限
为10 ng/mL;色氨酸、酪氨酸、马尿酸的检测质量浓度范围为1 600~51 200 ng/mL(r=0.999 2~0.999 7,n=6),定量下限为1 600
ng/mL,准确度试验结果为 86.29%~98.65%(n=6),日内、日间精密度试验的 RSD 均不高于 14.65%(n=6),基质效应的 CV 为
6.18%~14.37%(n=6),提取回收率为86.21%~98.14%(n=6),稳定性试验的RE均<14.71%(n=3~6)。结论:该方法灵敏、准
确,可用于测定人体内上述9种物质的浓度。
关键词 抑郁症患者;尿液浓度;液相色谱-质谱串联法;氨基酸类物质
Determination of 9 Amino Acid Endogenous Substances in Morning Urine of Depression Patients by
LC-MS/MS
SONG Hongyan ,XIA Jingsheng ,JI Gangjian ,REN Zhangtao ,ZHANG Xianglin ,LIU Fang ,CHEN Ling 1
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(1.Dept. of Pharmacy,Wuhan Third Hospital/Tongren Hospital Affiliated to Wuhan University,Wuhan 430060,
China;2.Dept. of Pharmacy,China-Japan Friendship Hospital,Beijing 100029,China)
ABSTRACT OBJECTIVE:To establish a method for the determination of 5-hydroxyindole acetic acid(5-HIAA),glutamine,
hippurate,pimelate,proline,tryptophan,tyramine,tyrosine and valine in human urine. METHODS:Morning urine samples were
collected from depression patients. The sample was extracted with acetonitrile after addition of internal standard cortisone. LC-MS/
MS method was adopted. The determination was performed on XTerra RP18 column with mobile phase consisted of 0.1% acetic
acid-water as mobile phase A and 0.1% acetic acid-acetonitrile as mobile phase B(gradient elution). The column temperature was
set at 40 ℃,and flow rate was 0.45 mL/min. Electrospray ion source(ESI)was used for quantitative analysis by multiple reaction
monitoring (MRM). The precursor/product ion transitions (m/z) were monitored at m/z 192.2→146.1,m/z 147.2→130.0,m/z
180.1→105.1,m/z 161.1→125.2,m/z 116.1→70.2,m/z 205.2→188.2,m/z 138.2→121.1,m/z 182.0→123.0,m/z 118.2→72.1 and
m/z 361.2→163.0(+ion-mode)for 5-HIAA,glutamine,hippurate,pimelate,proline,tryptophan,tyramine,tyrosine,valine and
cortisone,respectively. RESULTS:The linear range of 5-HIAA,glutamine,pimelate,proline,tyramine and valine were 10.00-3
200 ng/mL(r=0.993 8-0.998 9,n=6). The lower limit of quantification was 10 ng/mL;the linear range of hippurate,tryptophan
and tyrosine were 1 600-51 200 ng/mL(r=0.999 2-0.999 7,n=6). The lower limit of quantitation was 1 600 ng/mL. The results
of accuracy tests were 86.29%-98.65%(n=6). RSDs of intra-day and inter-day precision tests were no more than 14.65%(n=6).
CV of matrix effect were 6.18%-14.37%(n=6). Extraction recovery rates were 86.21%-98.14%(n=6). RE of stability tests
were no more than 14.71%(n=3-6). CONCLUSIONS:The method is sensitive,accurate and suitable for the determination of 9
substances in human.
KEYWORDS Depression patients;Urine concentration;LC-MS/MS;Amino acid substances
抑郁症神经生物化学方面的研究是近几十年来的
Δ 基金项目:湖北省自然科学基金资助项目(No.2019CFC886)
*药师。研究方向:临床药学。电话:027-68894880。E-mail: 研究的热点,取得了很大的进展,通过对抑郁症临床治
2531248621@qq.com
疗的有效药物进行研究,几乎所有在临床上有效的抗抑
# 通信作者:主管中药师,硕士。研究方向:临床中药学。电话:
027-68894886。E-mail:57776228@qq.com 郁剂都能够影响人体内物质含量的变化 [1-2] 。 目前临床
中国药房 2020年第31卷第1期 China Pharmacy 2020 Vol. 31 No. 1 ·91 ·