在线固相萃取—二维液相色谱串联质谱法测定人脑脊液中替考拉宁浓度
左利民等
摘 要 建立测定人脑脊液中替考拉宁浓度的在线固相萃取二维液相色谱
3.4 方法的性能分析
3.4.1 方法专属性 分别取空白脑脊液、加标脑脊液标准溶液及受试者样本各400 μL,按2.4节操作,相应谱图见图5。结果表明,空白脑脊液中的内源性物质不干扰替考拉宁和内标氢溴酸东莨菪碱的测定。
3.5 临床样本分析结果
利用本方法对来自首都医科大学附属天坛医院的患者在不同时间点抽取的脑脊液样本进行检测,结果如表2所示。
结果表明,替考拉宁经注射给药后,在人脑脊液中呈现较快吸收速度,但之后在体内消除速度较慢,呈现较长的半衰期,这可能与替考拉宁与白蛋白高结合率所致,以上数据可为替考拉宁血药浓度的测定和药代动力学研究提供参考。
4 结 论
建立了在线SPE2DLCMS/MS测定人脑脊液中替考拉宁浓度的方法,并用于临床样本检测。简化了工作流程,实现了样品处理和分析的自动化,提高了分析速度,能够较好满足脑脊液样品分析的要求。本方法适用于监测脑脊液中替考拉宁浓度。
References
1 ZHU ShiQing, NIU ChangQun. Journal of Instrumental Analysis, 2008, 27(s1): 23-25
祝仕清, 牛长群. 分析测试学报, 2008, 27(s1): 23-25
2 ZHANG Bo. China Practical Medicine, 2011, 23(6): 38-39
张 波. 中国实用医药, 2011, 23(6): 38-39
3 XUE Jing, CHANG Yan, ZOU WenBo, Li Ping, HU ChangQin. Chinese Journal of Antibiotics, 2010, 35(11): 848-852
薛 晶, 常 艳, 邹文博, 李 萍, 胡昌勤. 中国抗生素杂志, 2010, 35 (11): 848-852
4 Wilson A P. Clin. Pharmacokinet., 2000, 39: 167-183
5 Hunt A H, Molloy R M, Occolowitz J L. J. Am. Chem. Soc., 1984, 106(17): 4891-4895
6 Whitehouse T, Cepeda J A, Shulman R. Journal of Antimicrobial Chemotherapy, 2005, 55: 333-340
7 McCann S J, White L O, KeevillB. Journal of Antimicrobial Chemotherapy, 2002, 50: 107-110
8 AI YouSheng, XU ChuHong, CHENG ZhiXiang, CHENG HuaTing. Chinese Journal of Hospital Pharmacy, 2005 , 25(3): 254-255
艾又生, 徐楚鸿, 陈志祥, 陈华庭. 中国医院药学杂志, 2005 , 25(3): 254-255
9 GUO Sheng, Tang AnNa, Wang JunDe,Cong RunZi, BAO JianMin. ChineseJournal of Chromatography, 2006, 24(1): 46-48
国 生, 唐安娜, 王俊德, 丛润滋, 包建民. 色谱, 2006, 24(1): 46-48
10 GENG YanHui, LIU SuYan, HE GuangFeng. Modern Journal of Integrated Traditional Chinese and Western Medicine, 2014, 23(3): 307-309
耿艳辉, 刘素彦, 贺广锋. 现代中西医结合杂志, 2014, 23(3): 307-309
Determination of Teicoplanin in Human Cerebrospinal Fluid
Using an Online Solid Phase ExtractionTwo Dimensional
Liquid ChromatographyTandem Mass Spactrometry
ZUO LiMin1, YAO Jing2, WANG Qiang3, ZHOU Jie1, FENG MengXue1, SHAN GuangZhi*1
1(Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Beijing 100050, China)
2(National Institutes for Food and Drug Control, Beijing 100050, China)
3(Beijing Tiantan Hospital, Beijing 100050, China)
Abstract A method of online solid phase extraction (SPE)two dimensional liquid chromatography electrosparytandem mass spectrometric method was established for the determination of Teicoplanin concentrations in human cerebrospinal fluid. Cerebrospinal fluid samples were treated by the online SPE treatment, and analyzed by LCMS/MS. The chromatographic separation was performed on a Shiseido CAPCALLPAK C18 column with gradient elution by using 25 mmol/L ammonium acetate (pH 6.0)acetonitrile as mobile phases, and the flow rate of 1 mL/min. Detection was carried out under the selected reaction monitoring (SRM) in positive ionization mode with scopolamine hydrobromide as internal standard. Matrixmatched calibration curves with good correlation coefficients (R2=0.9993, n=6) were obtained in the concentration range of 25-5000 μg/L. The average recoveries varied from 100.8% to 109.9%. The intra and interday precisions were less than 6%. The method is proved to be rapid, sensitive, accurate, and suitable to determine Teicoplanin concentrations in human cerebrospinal fluid.
Keywords Online solid phase extraction; Teicoplanin; Cerebrospinal fluid; Twodimensional liquid chromatographytandem mass spectrometry
(Received 30 August 2014; accepted 20 October 2014)
摘 要 建立测定人脑脊液中替考拉宁浓度的在线固相萃取二维液相色谱
3.4 方法的性能分析
3.4.1 方法专属性 分别取空白脑脊液、加标脑脊液标准溶液及受试者样本各400 μL,按2.4节操作,相应谱图见图5。结果表明,空白脑脊液中的内源性物质不干扰替考拉宁和内标氢溴酸东莨菪碱的测定。
3.5 临床样本分析结果
利用本方法对来自首都医科大学附属天坛医院的患者在不同时间点抽取的脑脊液样本进行检测,结果如表2所示。
结果表明,替考拉宁经注射给药后,在人脑脊液中呈现较快吸收速度,但之后在体内消除速度较慢,呈现较长的半衰期,这可能与替考拉宁与白蛋白高结合率所致,以上数据可为替考拉宁血药浓度的测定和药代动力学研究提供参考。
4 结 论
建立了在线SPE2DLCMS/MS测定人脑脊液中替考拉宁浓度的方法,并用于临床样本检测。简化了工作流程,实现了样品处理和分析的自动化,提高了分析速度,能够较好满足脑脊液样品分析的要求。本方法适用于监测脑脊液中替考拉宁浓度。
References
1 ZHU ShiQing, NIU ChangQun. Journal of Instrumental Analysis, 2008, 27(s1): 23-25
祝仕清, 牛长群. 分析测试学报, 2008, 27(s1): 23-25
2 ZHANG Bo. China Practical Medicine, 2011, 23(6): 38-39
张 波. 中国实用医药, 2011, 23(6): 38-39
3 XUE Jing, CHANG Yan, ZOU WenBo, Li Ping, HU ChangQin. Chinese Journal of Antibiotics, 2010, 35(11): 848-852
薛 晶, 常 艳, 邹文博, 李 萍, 胡昌勤. 中国抗生素杂志, 2010, 35 (11): 848-852
4 Wilson A P. Clin. Pharmacokinet., 2000, 39: 167-183
5 Hunt A H, Molloy R M, Occolowitz J L. J. Am. Chem. Soc., 1984, 106(17): 4891-4895
6 Whitehouse T, Cepeda J A, Shulman R. Journal of Antimicrobial Chemotherapy, 2005, 55: 333-340
7 McCann S J, White L O, KeevillB. Journal of Antimicrobial Chemotherapy, 2002, 50: 107-110
8 AI YouSheng, XU ChuHong, CHENG ZhiXiang, CHENG HuaTing. Chinese Journal of Hospital Pharmacy, 2005 , 25(3): 254-255
艾又生, 徐楚鸿, 陈志祥, 陈华庭. 中国医院药学杂志, 2005 , 25(3): 254-255
9 GUO Sheng, Tang AnNa, Wang JunDe,Cong RunZi, BAO JianMin. ChineseJournal of Chromatography, 2006, 24(1): 46-48
国 生, 唐安娜, 王俊德, 丛润滋, 包建民. 色谱, 2006, 24(1): 46-48
10 GENG YanHui, LIU SuYan, HE GuangFeng. Modern Journal of Integrated Traditional Chinese and Western Medicine, 2014, 23(3): 307-309
耿艳辉, 刘素彦, 贺广锋. 现代中西医结合杂志, 2014, 23(3): 307-309
Determination of Teicoplanin in Human Cerebrospinal Fluid
Using an Online Solid Phase ExtractionTwo Dimensional
Liquid ChromatographyTandem Mass Spactrometry
ZUO LiMin1, YAO Jing2, WANG Qiang3, ZHOU Jie1, FENG MengXue1, SHAN GuangZhi*1
1(Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Beijing 100050, China)
2(National Institutes for Food and Drug Control, Beijing 100050, China)
3(Beijing Tiantan Hospital, Beijing 100050, China)
Abstract A method of online solid phase extraction (SPE)two dimensional liquid chromatography electrosparytandem mass spectrometric method was established for the determination of Teicoplanin concentrations in human cerebrospinal fluid. Cerebrospinal fluid samples were treated by the online SPE treatment, and analyzed by LCMS/MS. The chromatographic separation was performed on a Shiseido CAPCALLPAK C18 column with gradient elution by using 25 mmol/L ammonium acetate (pH 6.0)acetonitrile as mobile phases, and the flow rate of 1 mL/min. Detection was carried out under the selected reaction monitoring (SRM) in positive ionization mode with scopolamine hydrobromide as internal standard. Matrixmatched calibration curves with good correlation coefficients (R2=0.9993, n=6) were obtained in the concentration range of 25-5000 μg/L. The average recoveries varied from 100.8% to 109.9%. The intra and interday precisions were less than 6%. The method is proved to be rapid, sensitive, accurate, and suitable to determine Teicoplanin concentrations in human cerebrospinal fluid.
Keywords Online solid phase extraction; Teicoplanin; Cerebrospinal fluid; Twodimensional liquid chromatographytandem mass spectrometry
(Received 30 August 2014; accepted 20 October 2014)
摘 要 建立测定人脑脊液中替考拉宁浓度的在线固相萃取二维液相色谱
3.4 方法的性能分析
3.4.1 方法专属性 分别取空白脑脊液、加标脑脊液标准溶液及受试者样本各400 μL,按2.4节操作,相应谱图见图5。结果表明,空白脑脊液中的内源性物质不干扰替考拉宁和内标氢溴酸东莨菪碱的测定。
3.5 临床样本分析结果
利用本方法对来自首都医科大学附属天坛医院的患者在不同时间点抽取的脑脊液样本进行检测,结果如表2所示。
结果表明,替考拉宁经注射给药后,在人脑脊液中呈现较快吸收速度,但之后在体内消除速度较慢,呈现较长的半衰期,这可能与替考拉宁与白蛋白高结合率所致,以上数据可为替考拉宁血药浓度的测定和药代动力学研究提供参考。
4 结 论
建立了在线SPE2DLCMS/MS测定人脑脊液中替考拉宁浓度的方法,并用于临床样本检测。简化了工作流程,实现了样品处理和分析的自动化,提高了分析速度,能够较好满足脑脊液样品分析的要求。本方法适用于监测脑脊液中替考拉宁浓度。
References
1 ZHU ShiQing, NIU ChangQun. Journal of Instrumental Analysis, 2008, 27(s1): 23-25
祝仕清, 牛长群. 分析测试学报, 2008, 27(s1): 23-25
2 ZHANG Bo. China Practical Medicine, 2011, 23(6): 38-39
张 波. 中国实用医药, 2011, 23(6): 38-39
3 XUE Jing, CHANG Yan, ZOU WenBo, Li Ping, HU ChangQin. Chinese Journal of Antibiotics, 2010, 35(11): 848-852
薛 晶, 常 艳, 邹文博, 李 萍, 胡昌勤. 中国抗生素杂志, 2010, 35 (11): 848-852
4 Wilson A P. Clin. Pharmacokinet., 2000, 39: 167-183
5 Hunt A H, Molloy R M, Occolowitz J L. J. Am. Chem. Soc., 1984, 106(17): 4891-4895
6 Whitehouse T, Cepeda J A, Shulman R. Journal of Antimicrobial Chemotherapy, 2005, 55: 333-340
7 McCann S J, White L O, KeevillB. Journal of Antimicrobial Chemotherapy, 2002, 50: 107-110
8 AI YouSheng, XU ChuHong, CHENG ZhiXiang, CHENG HuaTing. Chinese Journal of Hospital Pharmacy, 2005 , 25(3): 254-255
艾又生, 徐楚鸿, 陈志祥, 陈华庭. 中国医院药学杂志, 2005 , 25(3): 254-255
9 GUO Sheng, Tang AnNa, Wang JunDe,Cong RunZi, BAO JianMin. ChineseJournal of Chromatography, 2006, 24(1): 46-48
国 生, 唐安娜, 王俊德, 丛润滋, 包建民. 色谱, 2006, 24(1): 46-48
10 GENG YanHui, LIU SuYan, HE GuangFeng. Modern Journal of Integrated Traditional Chinese and Western Medicine, 2014, 23(3): 307-309
耿艳辉, 刘素彦, 贺广锋. 现代中西医结合杂志, 2014, 23(3): 307-309
Determination of Teicoplanin in Human Cerebrospinal Fluid
Using an Online Solid Phase ExtractionTwo Dimensional
Liquid ChromatographyTandem Mass Spactrometry
ZUO LiMin1, YAO Jing2, WANG Qiang3, ZHOU Jie1, FENG MengXue1, SHAN GuangZhi*1
1(Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Beijing 100050, China)
2(National Institutes for Food and Drug Control, Beijing 100050, China)
3(Beijing Tiantan Hospital, Beijing 100050, China)
Abstract A method of online solid phase extraction (SPE)two dimensional liquid chromatography electrosparytandem mass spectrometric method was established for the determination of Teicoplanin concentrations in human cerebrospinal fluid. Cerebrospinal fluid samples were treated by the online SPE treatment, and analyzed by LCMS/MS. The chromatographic separation was performed on a Shiseido CAPCALLPAK C18 column with gradient elution by using 25 mmol/L ammonium acetate (pH 6.0)acetonitrile as mobile phases, and the flow rate of 1 mL/min. Detection was carried out under the selected reaction monitoring (SRM) in positive ionization mode with scopolamine hydrobromide as internal standard. Matrixmatched calibration curves with good correlation coefficients (R2=0.9993, n=6) were obtained in the concentration range of 25-5000 μg/L. The average recoveries varied from 100.8% to 109.9%. The intra and interday precisions were less than 6%. The method is proved to be rapid, sensitive, accurate, and suitable to determine Teicoplanin concentrations in human cerebrospinal fluid.
Keywords Online solid phase extraction; Teicoplanin; Cerebrospinal fluid; Twodimensional liquid chromatographytandem mass spectrometry
(Received 30 August 2014; accepted 20 October 2014)
摘 要 建立测定人脑脊液中替考拉宁浓度的在线固相萃取二维液相色谱
3.4 方法的性能分析
3.4.1 方法专属性 分别取空白脑脊液、加标脑脊液标准溶液及受试者样本各400 μL,按2.4节操作,相应谱图见图5。结果表明,空白脑脊液中的内源性物质不干扰替考拉宁和内标氢溴酸东莨菪碱的测定。
3.5 临床样本分析结果
利用本方法对来自首都医科大学附属天坛医院的患者在不同时间点抽取的脑脊液样本进行检测,结果如表2所示。
结果表明,替考拉宁经注射给药后,在人脑脊液中呈现较快吸收速度,但之后在体内消除速度较慢,呈现较长的半衰期,这可能与替考拉宁与白蛋白高结合率所致,以上数据可为替考拉宁血药浓度的测定和药代动力学研究提供参考。
4 结 论
建立了在线SPE2DLCMS/MS测定人脑脊液中替考拉宁浓度的方法,并用于临床样本检测。简化了工作流程,实现了样品处理和分析的自动化,提高了分析速度,能够较好满足脑脊液样品分析的要求。本方法适用于监测脑脊液中替考拉宁浓度。
References
1 ZHU ShiQing, NIU ChangQun. Journal of Instrumental Analysis, 2008, 27(s1): 23-25
祝仕清, 牛长群. 分析测试学报, 2008, 27(s1): 23-25
2 ZHANG Bo. China Practical Medicine, 2011, 23(6): 38-39
张 波. 中国实用医药, 2011, 23(6): 38-39
3 XUE Jing, CHANG Yan, ZOU WenBo, Li Ping, HU ChangQin. Chinese Journal of Antibiotics, 2010, 35(11): 848-852
薛 晶, 常 艳, 邹文博, 李 萍, 胡昌勤. 中国抗生素杂志, 2010, 35 (11): 848-852
4 Wilson A P. Clin. Pharmacokinet., 2000, 39: 167-183
5 Hunt A H, Molloy R M, Occolowitz J L. J. Am. Chem. Soc., 1984, 106(17): 4891-4895
6 Whitehouse T, Cepeda J A, Shulman R. Journal of Antimicrobial Chemotherapy, 2005, 55: 333-340
7 McCann S J, White L O, KeevillB. Journal of Antimicrobial Chemotherapy, 2002, 50: 107-110
8 AI YouSheng, XU ChuHong, CHENG ZhiXiang, CHENG HuaTing. Chinese Journal of Hospital Pharmacy, 2005 , 25(3): 254-255
艾又生, 徐楚鸿, 陈志祥, 陈华庭. 中国医院药学杂志, 2005 , 25(3): 254-255
9 GUO Sheng, Tang AnNa, Wang JunDe,Cong RunZi, BAO JianMin. ChineseJournal of Chromatography, 2006, 24(1): 46-48
国 生, 唐安娜, 王俊德, 丛润滋, 包建民. 色谱, 2006, 24(1): 46-48
10 GENG YanHui, LIU SuYan, HE GuangFeng. Modern Journal of Integrated Traditional Chinese and Western Medicine, 2014, 23(3): 307-309
耿艳辉, 刘素彦, 贺广锋. 现代中西医结合杂志, 2014, 23(3): 307-309
Determination of Teicoplanin in Human Cerebrospinal Fluid
Using an Online Solid Phase ExtractionTwo Dimensional
Liquid ChromatographyTandem Mass Spactrometry
ZUO LiMin1, YAO Jing2, WANG Qiang3, ZHOU Jie1, FENG MengXue1, SHAN GuangZhi*1
1(Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Beijing 100050, China)
2(National Institutes for Food and Drug Control, Beijing 100050, China)
3(Beijing Tiantan Hospital, Beijing 100050, China)
Abstract A method of online solid phase extraction (SPE)two dimensional liquid chromatography electrosparytandem mass spectrometric method was established for the determination of Teicoplanin concentrations in human cerebrospinal fluid. Cerebrospinal fluid samples were treated by the online SPE treatment, and analyzed by LCMS/MS. The chromatographic separation was performed on a Shiseido CAPCALLPAK C18 column with gradient elution by using 25 mmol/L ammonium acetate (pH 6.0)acetonitrile as mobile phases, and the flow rate of 1 mL/min. Detection was carried out under the selected reaction monitoring (SRM) in positive ionization mode with scopolamine hydrobromide as internal standard. Matrixmatched calibration curves with good correlation coefficients (R2=0.9993, n=6) were obtained in the concentration range of 25-5000 μg/L. The average recoveries varied from 100.8% to 109.9%. The intra and interday precisions were less than 6%. The method is proved to be rapid, sensitive, accurate, and suitable to determine Teicoplanin concentrations in human cerebrospinal fluid.
Keywords Online solid phase extraction; Teicoplanin; Cerebrospinal fluid; Twodimensional liquid chromatographytandem mass spectrometry
(Received 30 August 2014; accepted 20 October 2014)
摘 要 建立测定人脑脊液中替考拉宁浓度的在线固相萃取二维液相色谱
3.4 方法的性能分析
3.4.1 方法专属性 分别取空白脑脊液、加标脑脊液标准溶液及受试者样本各400 μL,按2.4节操作,相应谱图见图5。结果表明,空白脑脊液中的内源性物质不干扰替考拉宁和内标氢溴酸东莨菪碱的测定。
3.5 临床样本分析结果
利用本方法对来自首都医科大学附属天坛医院的患者在不同时间点抽取的脑脊液样本进行检测,结果如表2所示。
结果表明,替考拉宁经注射给药后,在人脑脊液中呈现较快吸收速度,但之后在体内消除速度较慢,呈现较长的半衰期,这可能与替考拉宁与白蛋白高结合率所致,以上数据可为替考拉宁血药浓度的测定和药代动力学研究提供参考。
4 结 论
建立了在线SPE2DLCMS/MS测定人脑脊液中替考拉宁浓度的方法,并用于临床样本检测。简化了工作流程,实现了样品处理和分析的自动化,提高了分析速度,能够较好满足脑脊液样品分析的要求。本方法适用于监测脑脊液中替考拉宁浓度。
References
1 ZHU ShiQing, NIU ChangQun. Journal of Instrumental Analysis, 2008, 27(s1): 23-25
祝仕清, 牛长群. 分析测试学报, 2008, 27(s1): 23-25
2 ZHANG Bo. China Practical Medicine, 2011, 23(6): 38-39
张 波. 中国实用医药, 2011, 23(6): 38-39
3 XUE Jing, CHANG Yan, ZOU WenBo, Li Ping, HU ChangQin. Chinese Journal of Antibiotics, 2010, 35(11): 848-852
薛 晶, 常 艳, 邹文博, 李 萍, 胡昌勤. 中国抗生素杂志, 2010, 35 (11): 848-852
4 Wilson A P. Clin. Pharmacokinet., 2000, 39: 167-183
5 Hunt A H, Molloy R M, Occolowitz J L. J. Am. Chem. Soc., 1984, 106(17): 4891-4895
6 Whitehouse T, Cepeda J A, Shulman R. Journal of Antimicrobial Chemotherapy, 2005, 55: 333-340
7 McCann S J, White L O, KeevillB. Journal of Antimicrobial Chemotherapy, 2002, 50: 107-110
8 AI YouSheng, XU ChuHong, CHENG ZhiXiang, CHENG HuaTing. Chinese Journal of Hospital Pharmacy, 2005 , 25(3): 254-255
艾又生, 徐楚鸿, 陈志祥, 陈华庭. 中国医院药学杂志, 2005 , 25(3): 254-255
9 GUO Sheng, Tang AnNa, Wang JunDe,Cong RunZi, BAO JianMin. ChineseJournal of Chromatography, 2006, 24(1): 46-48
国 生, 唐安娜, 王俊德, 丛润滋, 包建民. 色谱, 2006, 24(1): 46-48
10 GENG YanHui, LIU SuYan, HE GuangFeng. Modern Journal of Integrated Traditional Chinese and Western Medicine, 2014, 23(3): 307-309
耿艳辉, 刘素彦, 贺广锋. 现代中西医结合杂志, 2014, 23(3): 307-309
Determination of Teicoplanin in Human Cerebrospinal Fluid
Using an Online Solid Phase ExtractionTwo Dimensional
Liquid ChromatographyTandem Mass Spactrometry
ZUO LiMin1, YAO Jing2, WANG Qiang3, ZHOU Jie1, FENG MengXue1, SHAN GuangZhi*1
1(Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Beijing 100050, China)
2(National Institutes for Food and Drug Control, Beijing 100050, China)
3(Beijing Tiantan Hospital, Beijing 100050, China)
Abstract A method of online solid phase extraction (SPE)two dimensional liquid chromatography electrosparytandem mass spectrometric method was established for the determination of Teicoplanin concentrations in human cerebrospinal fluid. Cerebrospinal fluid samples were treated by the online SPE treatment, and analyzed by LCMS/MS. The chromatographic separation was performed on a Shiseido CAPCALLPAK C18 column with gradient elution by using 25 mmol/L ammonium acetate (pH 6.0)acetonitrile as mobile phases, and the flow rate of 1 mL/min. Detection was carried out under the selected reaction monitoring (SRM) in positive ionization mode with scopolamine hydrobromide as internal standard. Matrixmatched calibration curves with good correlation coefficients (R2=0.9993, n=6) were obtained in the concentration range of 25-5000 μg/L. The average recoveries varied from 100.8% to 109.9%. The intra and interday precisions were less than 6%. The method is proved to be rapid, sensitive, accurate, and suitable to determine Teicoplanin concentrations in human cerebrospinal fluid.
Keywords Online solid phase extraction; Teicoplanin; Cerebrospinal fluid; Twodimensional liquid chromatographytandem mass spectrometry
(Received 30 August 2014; accepted 20 October 2014)
摘 要 建立测定人脑脊液中替考拉宁浓度的在线固相萃取二维液相色谱
3.4 方法的性能分析
3.4.1 方法专属性 分别取空白脑脊液、加标脑脊液标准溶液及受试者样本各400 μL,按2.4节操作,相应谱图见图5。结果表明,空白脑脊液中的内源性物质不干扰替考拉宁和内标氢溴酸东莨菪碱的测定。
3.5 临床样本分析结果
利用本方法对来自首都医科大学附属天坛医院的患者在不同时间点抽取的脑脊液样本进行检测,结果如表2所示。
结果表明,替考拉宁经注射给药后,在人脑脊液中呈现较快吸收速度,但之后在体内消除速度较慢,呈现较长的半衰期,这可能与替考拉宁与白蛋白高结合率所致,以上数据可为替考拉宁血药浓度的测定和药代动力学研究提供参考。
4 结 论
建立了在线SPE2DLCMS/MS测定人脑脊液中替考拉宁浓度的方法,并用于临床样本检测。简化了工作流程,实现了样品处理和分析的自动化,提高了分析速度,能够较好满足脑脊液样品分析的要求。本方法适用于监测脑脊液中替考拉宁浓度。
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Determination of Teicoplanin in Human Cerebrospinal Fluid
Using an Online Solid Phase ExtractionTwo Dimensional
Liquid ChromatographyTandem Mass Spactrometry
ZUO LiMin1, YAO Jing2, WANG Qiang3, ZHOU Jie1, FENG MengXue1, SHAN GuangZhi*1
1(Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Beijing 100050, China)
2(National Institutes for Food and Drug Control, Beijing 100050, China)
3(Beijing Tiantan Hospital, Beijing 100050, China)
Abstract A method of online solid phase extraction (SPE)two dimensional liquid chromatography electrosparytandem mass spectrometric method was established for the determination of Teicoplanin concentrations in human cerebrospinal fluid. Cerebrospinal fluid samples were treated by the online SPE treatment, and analyzed by LCMS/MS. The chromatographic separation was performed on a Shiseido CAPCALLPAK C18 column with gradient elution by using 25 mmol/L ammonium acetate (pH 6.0)acetonitrile as mobile phases, and the flow rate of 1 mL/min. Detection was carried out under the selected reaction monitoring (SRM) in positive ionization mode with scopolamine hydrobromide as internal standard. Matrixmatched calibration curves with good correlation coefficients (R2=0.9993, n=6) were obtained in the concentration range of 25-5000 μg/L. The average recoveries varied from 100.8% to 109.9%. The intra and interday precisions were less than 6%. The method is proved to be rapid, sensitive, accurate, and suitable to determine Teicoplanin concentrations in human cerebrospinal fluid.
Keywords Online solid phase extraction; Teicoplanin; Cerebrospinal fluid; Twodimensional liquid chromatographytandem mass spectrometry
(Received 30 August 2014; accepted 20 October 2014)