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Seyfinejad B, Jouyban A. Capillary electrophoresis-mass spectrometry in pharmaceutical and biomedical analyses. J Pharm Biomed Anal 2022; 221:115059. [DOI: 10.1016/j.jpba.2022.115059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/05/2022] [Accepted: 09/14/2022] [Indexed: 10/31/2022]
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Hložek T, Štícha M, Bursová M, Jelínek I, Tůma P, Čabala R. Sensitive CE-MS method for monitoring of riociguat and desmethylriociguat levels in human serum. Electrophoresis 2020; 41:1564-1567. [PMID: 32640044 DOI: 10.1002/elps.202000135] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/29/2020] [Accepted: 06/30/2020] [Indexed: 11/10/2022]
Abstract
Riociguat is novel antihypertensive drug for treatment of pulmonary hypertension. As such, it is still being tested in many clinical and pharmacokinetic trials. Existing methods that determine serum riociguat and desmethylriociguat (DMR) are based solely on liquid chromatography with mass spectrometry. Therefore, we present a novel capillary electrophoresis with mass spectrometry method (CE-MS) for their determination in human serum as alternative method for ongoing trials. Complete resolution of both analytes was achieved by means of pH optimization of ammonium formate background electrolytes that are fully compatible with ESI/MS detection. Simple liquid-liquid extraction was used as sample pretreatment. The calibration dependence of the method was linear (in the range of 10-1000 ng/mL), with adequate accuracy (90.1-114.9%) and precision (13.4%). LOD and LOQ were arbitrarily set at 10 ng/mL for both analytes. Clinical applicability was validated using serum samples from patients treated with riociguat in pharmacokinetic study and the results corresponded with reference HPLC-MS/MS values. Capillary electrophoresis proved to be sensitive and selective tool for the analysis of riociguat and DMR.
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Affiliation(s)
- Tomáš Hložek
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic.,Institute of Forensic Medicine and Toxicology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.,Department of Hygiene, Third Faculty of Medicine, Charles University, Prague, Czech Republic.,Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Pardubice, Czech Republic
| | - Martin Štícha
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Miroslava Bursová
- Institute of Forensic Medicine and Toxicology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Ivan Jelínek
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic
| | - Petr Tůma
- Department of Hygiene, Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Radomír Čabala
- Department of Analytical Chemistry, Faculty of Science, Charles University, Prague, Czech Republic.,Institute of Forensic Medicine and Toxicology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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