1
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Wong GF, Lee WM, Li CK. Qualitative Screening of Amphetamine- and Ketamine-Type Abuse Drugs in Urine Employing Dual Mode Extraction Column by Liquid Chromatography-Tandem Mass Spectrometry (LC-MS-MS). J Anal Toxicol 2023; 46:1045-1052. [PMID: 35022735 DOI: 10.1093/jat/bkac004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 12/05/2021] [Accepted: 01/12/2022] [Indexed: 01/26/2023] Open
Abstract
This manuscript reported a fast and rapid qualitative screening method for abuse drugs in urine by liquid chromatography-tandem mass spectrometry (LC-MS-MS). The scope of the abuse drugs under investigation included methamphetamine (MA), amphetamine (AMP), methylenedioxymethamphetamine (MDMA), methylenedioxyamphetamine (MDA), paramethoxymethamphetamine (PMMA), ephedrine, pseudoephedrine, ketamine (KET), deschloroketamine (DCK), 2-fluorodeschloroketamine (2 F-DCK) and deschloro-N-ethylketamine (2-oxo-PCE). The method employed a dual mode extraction (DME) column as a novel clean-up method for the urine matrix. To an aliquot of 0.2 mL urine, internal standards (ISTDs) and 0.4 mL of acidified methanol were added. After vortex and centrifugation, the supernatant was passed through a DME column before LC-MS-MS analysis. Chromatographic separation was achieved with a C18 column by gradient elution. The limits of detection (LODs) for MA, AMP, MDMA, MDA and PMMA were 3 ng/mL, whereas those for ephedrine and pseudoephedrine were 10 ng/mL and those for KET, DCK, 2 F-DCK and 2-oxo-PCE were 1 ng/mL. The matrix effects ranged from -12% to 7% (%CV from 4% to 19%). This method is fit for the intended purpose for forensic toxicology, as well as for forensic analysis of drugs facilitating sexual assault and other criminal acts.
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Affiliation(s)
- George Fai Wong
- Forensic Science Division, Government Laboratory of Hong Kong, 7/F, Ho Man Tin Government offices, 88 Chung Hau Street, Homantin, Hong Kong
| | - Wing-Man Lee
- Forensic Science Division, Government Laboratory of Hong Kong, 7/F, Ho Man Tin Government offices, 88 Chung Hau Street, Homantin, Hong Kong
| | - Chi-Keung Li
- Forensic Science Division, Government Laboratory of Hong Kong, 7/F, Ho Man Tin Government offices, 88 Chung Hau Street, Homantin, Hong Kong
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2
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Gupta A, Zaheer MR, Iqbal S, Roohi, Ahmad A, Alshammari MB. Photodegradation and In Silico Molecular Docking Study of a Diuretic Drug: Clopamide. ACS OMEGA 2022; 7:13870-13877. [PMID: 35559154 PMCID: PMC9088902 DOI: 10.1021/acsomega.2c00256] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/30/2022] [Indexed: 08/28/2024]
Abstract
Clopamide (CPD, 1) is a piperidine and sulfamoylbenzamide-based diuretic drug and a potential photosensitizing sulfonamide; its phototransformation was investigated using N,N-dimethylaniline (DMA) as an electron donor and 1,4-dicyanonaphthalene (DCN) as an electron acceptor in an immersion-well-type photochemical reactor fitted with a medium-pressure mercury vapor lamp (450 W). Photodegradation of the drug Clopamide resulted in two significant products via photoinduced electron transfer. Structures of these products were deduced from their 1H NMR, 13C NMR, mass, and IR spectra. The photoproducts are 2- choloro-5-((2,6-dimethylpiperidin-1-yl)carbamoyl)benzenesulfonic acid (2) and 4-hydroxy-N-(2,6-dimethyl-1-piperidyl)-3-sulfamoyl benzamide (3). In addition to this, the comparative antioxidant potentials of the parent drug and its photoproducts were investigated using in silico molecular docking against tyrosinase in order to better understand the in vivo relevance of pharmacological action of the drug as a result of light-drug interactions. UV light has been observed to modify substituents on the benzene ring, hence loss of biological activity at the time of storage and in vivo cannot be ruled out. This suggests that Clopamide users should avoid light (natural or artificial) exposure to prevent from drug-induced photosensitivity.
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Affiliation(s)
- Anamika Gupta
- Department
of Chemistry, Aligarh Muslim University, Aligarh, 202002 U.P., India
| | - Mohd. Rehan Zaheer
- Department
of Chemistry, Aligarh Muslim University, Aligarh, 202002 U.P., India
| | - Safia Iqbal
- Department
of Chemistry, Aligarh Muslim University, Aligarh, 202002 U.P., India
| | - Roohi
- Protein
Research Laboratory, Department of Bioengineering, Integral University, Lucknow, 226026 U.P., India
| | - Akil Ahmad
- Department
of Chemistry, College of Sciences and Humanities, Prince Sattam bin Abdulaziz University 11892 Al-Kharj, Saudi Arabia
| | - Mohammed B. Alshammari
- Department
of Chemistry, College of Sciences and Humanities, Prince Sattam bin Abdulaziz University 11892 Al-Kharj, Saudi Arabia
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3
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Lee JH, Yang YJ, Min AY, Kim SJ, Jung EJ, Kim JH, Beak SY. Screening and elucidation of fragmentations of 23 diuretics in dietary supplements using UHPLC-Q-Orbitrap. Sci Justice 2021; 61:451-458. [PMID: 34482925 DOI: 10.1016/j.scijus.2021.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 05/14/2021] [Accepted: 05/28/2021] [Indexed: 11/17/2022]
Abstract
Diuretics are used to treat the edematous state in cases of renal insufficiency, nephrotic syndrome, liver cirrhosis, and heart failure. These compounds are used by athletes to lose weight and are included in the list of prohibited substances by the World Anti-Doping Agency. They are also used by obese and overweight people for losing weight, and there are a number of recent reports on the contamination of dietary supplements with diuretics. Due to the alluring online marketing and blogging, there is an extensive misuse of products that are illegally adulterated with diuretics, which has seriously increased health risks. Therefore, it is essential to develop an analytical method for the detection of adulterants in such substances. In this study, 23 diuretics, categorized into four groups, namely, thiazide diuretics (e.g., bendroflumethiazide), loop diuretics (e.g., bumetanide), potassium-sparing diuretics (e.g., amiloride), and carbonic anhydrase inhibitors (e.g., acetazolamide), were analyzed using ultrahigh-performance liquid chromatography-quadrupole orbitrap (UHPLC-Q-Orbitrap). Their fragmentation was elucidated based on the MS/MS data. The 124 products were screened by the UHPLC-Q-Orbitrap (LC-HRMS) method, and the confirmed compounds were quantitated by a previously established LC-MS/MS method. Approximately 5% of the samples were found to be illegally contaminated with diuretics at a concentration of 0.051-162 mg/g. The high selectivity and sensitivity of the UHPLC-Q-Orbitrap (LC-HRMS) method, in combination with the established fragmentation, offer a new approach for the rapid and accurate screening of diuretics in adulterated products, which would be ultimately beneficial for the public health.
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Affiliation(s)
- Ji Hyun Lee
- Center of Advanced Analysis, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety Osongseangmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159, Republic of Korea
| | - Yoon Ji Yang
- Center of Advanced Analysis, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety Osongseangmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159, Republic of Korea
| | - A Young Min
- Center of Advanced Analysis, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety Osongseangmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159, Republic of Korea
| | - Su Jin Kim
- Center of Advanced Analysis, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety Osongseangmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159, Republic of Korea
| | - Eun Ju Jung
- Center of Advanced Analysis, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety Osongseangmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159, Republic of Korea
| | - Jin Ho Kim
- Center of Advanced Analysis, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety Osongseangmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159, Republic of Korea
| | - Sun Young Beak
- Center of Advanced Analysis, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety Osongseangmyeong 2-ro, Osong-eup, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do 28159, Republic of Korea.
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De Wilde L, Roels K, Van Eenoo P, Deventer K. Online Turbulent Flow Extraction and Column Switching for the Confirmatory Analysis of Stimulants in Urine by Liquid Chromatography-Mass Spectrometry. J Anal Toxicol 2021; 45:666-678. [PMID: 33025016 DOI: 10.1093/jat/bkaa136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 08/10/2020] [Accepted: 09/24/2020] [Indexed: 11/14/2022] Open
Abstract
Stimulants are often used to treat attention deficit disorders and nasal congestion. As they can be misused and overdosed, the detection of stimulants is relevant in the toxicological field as well as in the doping control field. The effects of stimulants can indeed be beneficial for athletes. Therefore, their in-competition use is prohibited by the World Anti-Doping Agency (WADA). As stimulants represent one of the most detected categories of prohibited substances, automation of methods to detect and confirm their presence is desirable. Previous work has shown the advantages of using turbulent flow online solid-phase extraction liquid chromatography-tandem mass spectrometry (online SPE LC-MS-MS) for the detection and confirmation of diuretics and masking agents. Hence, a turbulent flow online SPE LC-MS-MS method, compliant with the WADA's identification criteria, was developed and validated for the detection and confirmation of 80 stimulants or metabolites with limits of identification varying between 10 (or possibly lower) and 100 ng/mL. As several metabolites are common metabolites for multiple administered stimulants, this means that with this method, misuse of well over 100 compounds can be detected. As the developed method uses the same columns and mobile phases as our turbulent flow online SPE LC-MS-MS method for the confirmation of diuretics and masking agents, there is no need to change the configuration of the instrument when switching between the diuretics method and the developed stimulants method.
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Affiliation(s)
- Laurie De Wilde
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department Diagnostic Sciences, Technologiepark 30B, B-9052, Zwijnaarde, Belgium
| | - Kris Roels
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department Diagnostic Sciences, Technologiepark 30B, B-9052, Zwijnaarde, Belgium
| | - Peter Van Eenoo
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department Diagnostic Sciences, Technologiepark 30B, B-9052, Zwijnaarde, Belgium
| | - Koen Deventer
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department Diagnostic Sciences, Technologiepark 30B, B-9052, Zwijnaarde, Belgium
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The QuEChERS method coupled with high-performance liquid chromatography-tandem mass spectrometry for the determination of diuretics in animal-derived foods. J Food Compost Anal 2021. [DOI: 10.1016/j.jfca.2021.103965] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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6
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Görgens C, Walker K, Boeser C, Wijeratne N, Martins C, Guddat S, Thevis M. Paper spray mass spectrometry – A potential complementary technique for the detection of polar compounds in sports drug testing. Drug Test Anal 2020; 12:1658-1665. [DOI: 10.1002/dta.2909] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/22/2020] [Accepted: 08/05/2020] [Indexed: 01/03/2023]
Affiliation(s)
- Christian Görgens
- Center for Preventive Doping Research/Institute of Biochemistry German Sport University Cologne Cologne Germany
| | | | | | | | | | - Sven Guddat
- Center for Preventive Doping Research/Institute of Biochemistry German Sport University Cologne Cologne Germany
| | - Mario Thevis
- Center for Preventive Doping Research/Institute of Biochemistry German Sport University Cologne Cologne Germany
- European Monitoring Center for Emerging Doping Agents (EuMoCEDA) Cologne/Bonn Germany
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7
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De Wilde L, Roels K, Deventer K, Van Eenoo P. Automated sample preparation for the detection and confirmation of hypoxia-inducible factor stabilizers in urine. Biomed Chromatogr 2020; 35:e4970. [PMID: 32840903 DOI: 10.1002/bmc.4970] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 08/14/2020] [Accepted: 08/21/2020] [Indexed: 12/14/2022]
Abstract
As hypoxia-inducible factor stabilizers (HIFs) can artificially enhance an athlete's erythropoiesis, the World Anti-Doping Agency prohibits their use at all times. Every urine sample for doping control analysis has to be evaluated for the presence of HIFs and therefore sensitive methods that allow high sample throughput are needed. Samples suspicious for the presence of HIFs need to be confirmed following the identification criteria established by the World Anti-Doping Agency. Previous work has shown the advantages of using turbulent flow online solid-phase extraction (SPE) procedures to reduce matrix effects and retention time shifts. Furthermore, the use of online SPE allows for automation and high sample throughput. Both an initial testing procedure (ITP) and a confirmation method were developed and validated, using online SPE liquid chromatography-tandem mass spectrometry (LC-MS/MS), with limits of detection between 0.1 ng/ml (or possibly lower) and 4 ng/ml (or higher for GSK360a) and limits of identification between 0.1 ng/ml (or possibly lower) and 1.17 ng/ml. The ITP only takes 6.5 min per sample. To the best of our knowledge, these are the first ITP and confirmation methods that include more than three HIFs without the need for manual sample preparation.
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Affiliation(s)
- Laurie De Wilde
- Doping Control Laboratory, Ghent University, Department Diagnostic Sciences, Zwijnaarde, Belgium
| | - Kris Roels
- Doping Control Laboratory, Ghent University, Department Diagnostic Sciences, Zwijnaarde, Belgium
| | - Koen Deventer
- Doping Control Laboratory, Ghent University, Department Diagnostic Sciences, Zwijnaarde, Belgium
| | - Peter Van Eenoo
- Doping Control Laboratory, Ghent University, Department Diagnostic Sciences, Zwijnaarde, Belgium
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8
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Sobolevsky T, Ahrens B. High-throughput liquid chromatography tandem mass spectrometry assay as initial testing procedure for analysis of total urinary fraction. Drug Test Anal 2020; 13:283-298. [PMID: 32852861 DOI: 10.1002/dta.2917] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 08/16/2020] [Accepted: 08/17/2020] [Indexed: 12/14/2022]
Abstract
In the recent years, a lot of effort was put into the development of multiclass initial testing procedures (ITP) to streamline analytical workflow in antidoping laboratories. Here, a high-throughput assay based on liquid chromatography-triple quadrupole mass spectrometry suitable for use as initial testing procedure covering multiple classes of compounds prohibited in sports is described. Employing a 96-well plate packed with 10 mg of weak cation exchange polymeric sorbent, up to 94 urine samples and their associated positive and negative controls can be processed in less than 3 h with minimal labor. The assay requires a 0.5-ml urine aliquot, which is subjected to enzymatic hydrolysis followed by solid phase extraction, evaporation, and reconstitution in a 96-well collection plate. With a 10-min run time, more than 100 analytes can be detected using electrospray ionization with polarity switching. The assay can be run nearly 24/7 with minimal downtime for instrument maintenance while detecting picogram amounts for the majority of analytes. Having analyzed approximately 28,000 samples, nearly 400 adverse analytical findings were found of which only one tenth were at or above 50% of the minimum required performance level established by the World Anti-Doping Agency. Compounds most often identified were stanozolol, GW1516, ostarine, LGD4033, and clomiphene, with median estimated concentrations in the range of 0.02-0.09 ng/ml (either as parent drug or a metabolite). Our data demonstrate the importance of using a highly sensitive ITP to ensure efficient antidoping testing.
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Affiliation(s)
- Tim Sobolevsky
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, Los Angeles, California, USA
| | - Brian Ahrens
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine, Los Angeles, California, USA
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Fu W, Min J, Jiang W, Li Y, Zhang W. Separation, characterization and identification of microplastics and nanoplastics in the environment. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 721:137561. [PMID: 32172100 DOI: 10.1016/j.scitotenv.2020.137561] [Citation(s) in RCA: 93] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 02/16/2020] [Accepted: 02/24/2020] [Indexed: 05/23/2023]
Abstract
Microplastics (MPs) have globally been detected in aquatic and marine environments, which has raised scientific interests and public health concerns during the past decade. MPs are those polymeric particles with at least one dimension <5 mm. MPs possess complex physicochemical properties that vary their mobility, bioavailability and toxicity toward organisms and interactions with their surrounding pollutants. Similar to nanomaterials and nanoparticles, accurate and reliable detection and measurement of MPs or nanoplastics and their characteristics are important to warrant a comprehensive understanding of their environmental and ecological impacts. This review elaborates the principles and applications of diverse analytical instruments or techniques for separation, characterization and quantification of MPs in the environment. The strength and weakness of different instrumental methods in separation, morphological, physical classification, chemical characterization and quantification for MPs are critically compared and analyzed. There is a demand for standardized experimental procedures and characterization analysis due to the complex transformation, cross-contamination and heterogeneous properties of MPs in size and chemical compositions. Moreover, this review highlights emerging and promising characterization techniques that may have been overlooked by research communities to study MPs. The future research efforts may need to develop and implement new analytical tools and combinations of hyphenated technologies to complement respective limitations of detection and yield reliable characterization information for MPs. The goal of this critical review is to facilitate the research of plastic particles and pollutants in the environment and understanding of their environmental and human health effects.
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Affiliation(s)
- Wanyi Fu
- John A. Reif, Jr. Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; Shenzhen Environmental Science and New Energy Technology Engineering Laboratory, Tsinghua-Berkeley Shenzhen Institute, Tsinghua University, Shenzhen 518055, People's Republic of China
| | - Jiacheng Min
- John A. Reif, Jr. Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; Department of Municipal and Environmental Engineering, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, People's Republic of China
| | - Weiyu Jiang
- John A. Reif, Jr. Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; Department of Municipal and Environmental Engineering, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, People's Republic of China
| | - Yang Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, People's Republic of China
| | - Wen Zhang
- John A. Reif, Jr. Department of Civil and Environmental Engineering, New Jersey Institute of Technology, Newark, NJ 07102, USA; Department of Municipal and Environmental Engineering, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, People's Republic of China.
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Abdel-Hay MH, Ragab MA, Ahmed HM, Mohyeldin SM. The use of Arrhenius kinetics to evaluate different hydrolytic stability of amiloride hydrochloride and cyclopenthiazide using chromatographic methods. Microchem J 2019. [DOI: 10.1016/j.microc.2019.03.073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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De Wilde L, Roels K, Polet M, Van Eenoo P, Deventer K. Identification and confirmation of diuretics and masking agents in urine by turbulent flow online solid-phase extraction coupled with liquid chromatography-triple quadrupole mass spectrometry for doping control. J Chromatogr A 2018; 1579:31-40. [PMID: 30430987 DOI: 10.1016/j.chroma.2018.10.032] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 10/09/2018] [Accepted: 10/16/2018] [Indexed: 10/28/2022]
Abstract
Diuretics can be misused to force diuresis to achieve weight loss or to mask the intake of a prohibited substance and are therefore prohibited by the World Anti-Doping Agency (WADA). For similar reasons other masking agents (vaptans, probenecid, etc.) are also prohibited by the WADA. The currently employed methods to detect diuretics in urine use extraction or dilute-and-shoot, combined with 1D- liquid chromatography (LC) high resolution mass spectrometry (MS) or LC-triple quadrupole MS. Dilute-and-shoot methods save time and work, but these methods encounter some problems (e.g., peak drift and matrix effect). Therefore, a 2D-LC-MS/MS application was developed, validated and evaluated as an alternative. The effect of a turbulent flow rate was studied by loading samples under different conditions and the turbulent flow rate was found to be more effective in removing matrix interferences. A correlation with the specific gravity was observed. A turbulent flow online solid phase extraction (SPE) method combined with LC-MS/MS for the detection of 50 diuretics and masking agents was developed and validated for identification purposes. This method combines the advantages of dilute-and-shoot while solving the issues of matrix effect and retention time shift. Furthermore, the presented method is compliant with WADA's identification criteria and can hence be used for screening and/or confirmation.
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Affiliation(s)
- Laurie De Wilde
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium.
| | - Kris Roels
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium
| | - Michaël Polet
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium
| | - Peter Van Eenoo
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium
| | - Koen Deventer
- Doping Control Laboratory (DoCoLab), Ghent University (UGent), Department of Clinical Chemistry, Microbiology and Immunology, Technologiepark 30B, B-9052 Zwijnaarde, Belgium
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12
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A simple UHPLC-PDA method with a fast dilute-and-shot sample preparation for the quantification of canrenone and its prodrug spironolactone in human urine samples. J Pharmacol Toxicol Methods 2018; 94:29-35. [PMID: 30165207 DOI: 10.1016/j.vascn.2018.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 08/03/2018] [Accepted: 08/22/2018] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Nowadays, the treatment of hypertension represents an important issue, particularly in developed countries. While in most cases the standard therapeutic approaches, consisting in the administration of 1 to 3 drugs, are adequate to reach adequate blood pressure levels, in some cases more drugs are needed: this condition is called "resistant hypertension". In this context, the administration of a diuretic, such as spironolactone or canrenoate salts, represents a standard practice. Since a reliable discrimination of real cases of resistant hypertension from cases of poor therapeutic adherence is currently difficult to obtain, the adoption of therapeutic drug monitoring has been suggested as a useful tool for this purpose. In this work, the authors developed and validated a simple, cheap and fast dilute-and-shot method with UHPLC-PDA analysis for the quantification of spironolactone and its metabolite canrenone in human urine samples. METHODS Standards and quality controls were prepared in urine. Only 100 μL of sample were added with 80 μL of internal standard (6,7-dimethyl-2,3-di(2-pyridyl)quinoxaline) working solution and 820 μL of phosphate buffer 10 mM pH 3.2 (phase A):acetonitrile (phase B) 90:10 v:v solution. Chromatographic separation was performed on an Acquity® UPLC HSS T3 1.8 μm 2.1 × 150 mm column, with a binary gradient for 11 min at 40 °C. RESULTS Accuracy, intra-day and inter-day precision, selectivity and sensitivity fitted FDA guidelines for all analytes (LLOQ and LOD were 156.25 ng/mL and 78.12 ng/mL, respectively, for both analytes) and recovery resulted high and reproducible. Method performances were tested on urine samples from hypertensive patients with good results. DISCUSSION This simple analytical method could represent a useful tool for the management of antihypertensive therapy.
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Hudari FF, Bessegato GG, Bedatty Fernandes FC, Zanoni MVB, Bueno PR. Reagentless Detection of Low-Molecular-Weight Triamterene Using Self-Doped TiO2 Nanotubes. Anal Chem 2018; 90:7651-7658. [DOI: 10.1021/acs.analchem.8b01501] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Felipe F. Hudari
- São Paulo State University (Unesp), Institute of Chemistry, Araraquara, São Paulo, Brazil
| | - Guilherme G. Bessegato
- São Paulo State University (Unesp), Institute of Chemistry, Araraquara, São Paulo, Brazil
| | | | - Maria V. B. Zanoni
- São Paulo State University (Unesp), Institute of Chemistry, Araraquara, São Paulo, Brazil
| | - Paulo R. Bueno
- São Paulo State University (Unesp), Institute of Chemistry, Araraquara, São Paulo, Brazil
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14
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Hudari FF, Zanoni MVB. A glassy carbon electrode modified with reduced graphene oxide for sensitive determination of bumetanide in urine at levels required for doping analysis. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2443-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Gonçalves VM, Rodrigues P, Ribeiro C, Tiritan ME. Quantification of alprenolol and propranolol in human plasma using a two-dimensional liquid chromatography (2D-LC). J Pharm Biomed Anal 2017; 141:1-8. [DOI: 10.1016/j.jpba.2017.03.064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 03/19/2017] [Accepted: 03/21/2017] [Indexed: 10/19/2022]
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16
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Abdel-Hay MH, Ragab MA, Ahmed HM, Mohyeldin SM. Diode array detection and derivative spectroscopic methods for stability study of Oxprenolol and Cyclopenthiazide in liquids. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.01.102] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Shah JV, Shah PA, Sanyal M, Shrivastav PS. Simultaneous quantification of amiloride and hydrochlorothiazide in human plasma by liquid chromatography-tandem mass spectrometry. J Pharm Anal 2017; 7:288-296. [PMID: 29404051 PMCID: PMC5790693 DOI: 10.1016/j.jpha.2017.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2016] [Revised: 03/06/2017] [Accepted: 03/23/2017] [Indexed: 11/17/2022] Open
Abstract
A selective, sensitive and precise assay based on solid phase extraction and liquid chromatography–tandem mass spectrometry (LC–MS/MS) was developed for the simultaneous determination of amiloride (AMI) and hydrochlorothiazide (HCTZ) in human plasma. Sample clean-up with 250 µL of plasma was done on Phenomenex Strata™-X extraction cartridges using their labeled internal standards (AMI-15N3 and HCTZ-13C,d2). Chromatography was performed on Hypersil Gold C18 (50 mm×3.0 mm, 5 µm) column using acetonitrile with 4.0 mM ammonium formate (pH 4.0, adjusted with 0.1% formic acid) (80:20, v/v) as the mobile phase. Detection was carried out on a triple quadrupole API 5500 mass spectrometer utilizing an electrospray ionization interface and operating in the positive ionization mode for AMI and negative ionization mode for HCTZ. Multiple reaction monitoring was used following the transitions at m/z 230.6/116.0, m/z 233.6/116.0, m/z 296.0/204.9 and m/z 299.0/205.9 for AMI, AMI-15N3, HCTZ and HCTZ-13C,d2, respectively. Calibration curves were linear (r2≥0.9997) over the concentration range of 0.050–50.0 and 0.50–500 ng/mL for AMI and HCTZ, respectively, with acceptable accuracy and precision. The signal-to-noise ratio at the limit of quantitation was ≥14 for both the analytes. The mean recovery of AMI and HCTZ from plasma was 89.0% and 98.7%, respectively. The IS-normalized matrix factors determined for matrix effect ranged from 0.971 to 1.024 for both the analytes. The validated LC–MS/MS method was successfully applied to a bioequivalence study using 5 mg AMI and 50 mg HCTZ fixed dose tablet formulation in 18 healthy Indian volunteers with good reproducibility.
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Affiliation(s)
- Jaivik V Shah
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, India
| | - Priyanka A Shah
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, India
| | - Mallika Sanyal
- Department of Chemistry, St. Xavier's College, Navrangpura, Ahmedabad 380009, India
| | - Pranav S Shrivastav
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, India
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Görgens C, Guddat S, Thomas A, Wachsmuth P, Orlovius AK, Sigmund G, Thevis M, Schänzer W. Simplifying and expanding analytical capabilities for various classes of doping agents by means of direct urine injection high performance liquid chromatography high resolution/high accuracy mass spectrometry. J Pharm Biomed Anal 2016; 131:482-496. [PMID: 27693991 DOI: 10.1016/j.jpba.2016.09.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Revised: 09/06/2016] [Accepted: 09/13/2016] [Indexed: 12/13/2022]
Abstract
So far, in sports drug testing compounds of different classes are processed and measured using different screening procedures. The constantly increasing number of samples in doping analysis, as well as the large number of substances with doping related, pharmacological effects require the development of even more powerful assays than those already employed in sports drug testing, indispensably with reduced sample preparation procedures. The analysis of native urine samples after direct injection provides a promising analytical approach, which thereby possesses a broad applicability to many different compounds and their metabolites, without a time-consuming sample preparation. In this study, a novel multi-target approach based on liquid chromatography and high resolution/high accuracy mass spectrometry is presented to screen for more than 200 analytes of various classes of doping agents far below the required detection limits in sports drug testing. Here, classic groups of drugs as diuretics, stimulants, β2-agonists, narcotics and anabolic androgenic steroids as well as various newer target compounds like hypoxia-inducible factor (HIF) stabilizers, selective androgen receptor modulators (SARMs), selective estrogen receptor modulators (SERMs), plasma volume expanders and other doping related compounds, listed in the 2016 WADA prohibited list were implemented. As a main achievement, growth hormone releasing peptides could be implemented, which chemically belong to the group of small peptides (<2kDa) and are commonly determined by laborious and time-consuming stand-alone assays. The assay was fully validated for qualitative purposes considering the parameters specificity, robustness (rRT: <2%), intra- (CV: 1.7-18.4 %) and inter-day precision (CV: 2.3-18.3%) at three concentration levels, linearity (R2>0.99), limit of detection (0.1-25ng/mL; 3'OH-stanozolol glucuronide: 50pg/mL; dextran/HES: 10μg/mL) and matrix effects.
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Affiliation(s)
- Christian Görgens
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany.
| | - Sven Guddat
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Andreas Thomas
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Philipp Wachsmuth
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Anne-Katrin Orlovius
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Gerd Sigmund
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Mario Thevis
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
| | - Wilhelm Schänzer
- Institute of Biochemistry - Center for Preventive Doping Research, German Sport University Cologne, Am Sportpark Müngersdorf 6, 50933 Cologne, Germany
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Tolba MM, Belal F. Two liquid chromatographic approaches for the simultaneous determination of xipamide and its degradation product (2,6-xylidine) using time-programmed fluorescence detection. LUMINESCENCE 2016; 32:491-501. [PMID: 27562288 DOI: 10.1002/bio.3203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Revised: 07/05/2016] [Accepted: 07/24/2016] [Indexed: 11/09/2022]
Abstract
A study of the performance of reversed-phase chromatography with a programmable multiwavelength fluorimetric technique using either conventional hydro-organic or micellar eluent is established for the determination of xipamide (XIP) in the presence of its degradation product, 2,6-xylidine (XY). In conventional liquid chromatography (CLC), the analyses were carried out on a Promosil ODS 100 Å column (250 mm × 4.6 mm i.d., 5 μm) using a mobile phase consisting of methanol/0.1 M phosphate buffer (65: 35, v/v) at pH 4.0. For micellar liquid chromatography (MLC), a short Spherisorb column (150 mm × 4.6 mm i.d., 5 μm) was employed in conjunction with a greener mobile phase (pH 5.0) containing 0.1 M sodium dodecyl sulfate and 15% n-propanol. CLC proved to be superior to MLC in terms of sensitivity for the determination of the degradation product because it could detect trace amounts down to 10.0 ng/ml of XY as a degradation product in XIP. However, MLC represents an eco-friendly approach for the simultaneous determination of XIP and XY. In addition, the opportunity for the direct introduction of biological matrices into the chromatographic system is one of the distinctive benefits of MLC. The proposed methods were applied for the determination of XIP in its tablets, human urine and content uniformity testing. The results of the proposed methods were statistically compared with those obtained using the comparison fluorimetric method, revealing no significant differences in the performance of the methods regarding accuracy and precision.
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Affiliation(s)
- M M Tolba
- Department of Analytical Chemistry, University of Mansoura, Mansoura, Egypt
| | - F Belal
- Department of Analytical Chemistry, University of Mansoura, Mansoura, Egypt
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Ahrens BD, Kucherova Y, Butch AW. Detection of Stimulants and Narcotics by Liquid Chromatography-Tandem Mass Spectrometry and Gas Chromatography-Mass Spectrometry for Sports Doping Control. Methods Mol Biol 2016; 1383:247-263. [PMID: 26660193 DOI: 10.1007/978-1-4939-3252-8_26] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Sports drug testing laboratories are required to detect several classes of compounds that are prohibited at all times, which include anabolic agents, peptide hormones, growth factors, beta-2 agonists, hormones and metabolic modulators, and diuretics/masking agents. Other classes of compounds such as stimulants, narcotics, cannabinoids, and glucocorticoids are also prohibited, but only when an athlete is in competition. A single class of compounds can contain a large number of prohibited substances and all of the compounds should be detected by the testing procedure. Since there are almost 70 stimulants on the prohibited list it can be a challenge to develop a single screening method that will optimally detect all the compounds. We describe a combined liquid chromatography-tandem mass spectrometry (LC-MS/MS) and gas chromatography-mass spectrometry (GC-MS) testing method for detection of all the stimulants and narcotics on the World Anti-Doping Agency prohibited list. Urine for LC-MS/MS testing does not require sample pretreatment and is a direct dilute and shoot method. Urine samples for the GC-MS method require a liquid-liquid extraction followed by derivatization with trifluoroacetic anhydride.
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Affiliation(s)
- Brian D Ahrens
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine at UCLA, 2122 Granville Avenue, Los Angeles, CA, 90025-6106, USA
| | - Yulia Kucherova
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine at UCLA, 2122 Granville Avenue, Los Angeles, CA, 90025-6106, USA
| | - Anthony W Butch
- UCLA Olympic Analytical Laboratory, Department of Pathology & Laboratory Medicine, David Geffen School of Medicine at UCLA, 2122 Granville Avenue, Los Angeles, CA, 90025-6106, USA.
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21
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Voltammetric sensor based on magnetic particles modified composite electrode for determination of triamterene in biological sample. J Solid State Electrochem 2015. [DOI: 10.1007/s10008-015-3078-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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22
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Abstract
The great impact of cardiovascular diseases in human health has led to the development of a huge number of drugs and therapies to improve the treatment of these diseases. Cardiovascular drug analysis in biological fluids constitutes an important challenge for analytical scientists. There is a clear need for reliable methods to carry out both qualitative and quantitative analysis in a short time of analysis. Different problems such as drug monitoring, analysis of metabolites, study of drugs interactions, drugs residues or degradation products, chiral separation, and screening and confirmation of drugs of abuse in doping control must be solved. New trends in sample preparation, instrumental and column technology advances in LC and innovations in MS are described in this work.
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Domínguez-Romero JC, García-Reyes JF, Lara-Ortega FJ, Molina-Díaz A. Screening and confirmation capabilities of liquid chromatography-time-of-flight mass spectrometry for the determination of 200 multiclass sport drugs in urine. Talanta 2015; 134:74-88. [DOI: 10.1016/j.talanta.2014.10.050] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 10/15/2014] [Accepted: 10/24/2014] [Indexed: 12/25/2022]
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24
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Comparative evaluation of seven different sample treatment approaches for large-scale multiclass sport drug testing in urine by liquid chromatography–mass spectrometry. J Chromatogr A 2014; 1361:34-42. [DOI: 10.1016/j.chroma.2014.07.090] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 07/26/2014] [Accepted: 07/29/2014] [Indexed: 11/19/2022]
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25
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Methods for urine drug testing using one-step dilution and direct injection in combination with LC–MS/MS and LC–HRMS. Bioanalysis 2014; 6:2229-44. [DOI: 10.4155/bio.14.192] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The advent of LC combined with MS made it possible to design analytical methods for urine drug testing based on the very simple concept of diluting urine with an internal standard as the sole preparation procedure prior to instrumental analysis. The number of publications using this method design increased after the development of high-efficiency LC based on sub-2 μm particles. The success of this method design for drug testing, doping control and toxicological investigations of urine is now well documented and comprise both screening and confirmation methods. The nondiscriminating nature of this method design makes it even more attractive in combination with high-resolution MS for multicomponent target and general unknown analysis applications.
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26
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Tudela E, Deventer K, Geldof L, Van Eenoo P. Urinary detection of conjugated and unconjugated anabolic steroids by dilute-and-shoot liquid chromatography-high resolution mass spectrometry. Drug Test Anal 2014; 7:95-108. [DOI: 10.1002/dta.1650] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 01/15/2014] [Accepted: 02/23/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Eva Tudela
- Ghent University (UGent); Department of Clinical Chemistry, Microbiology and Immunology; Technologiepark 30 B-9052 Zwijnaarde Belgium
| | - Koen Deventer
- Ghent University (UGent); Department of Clinical Chemistry, Microbiology and Immunology; Technologiepark 30 B-9052 Zwijnaarde Belgium
| | - Lore Geldof
- Ghent University (UGent); Department of Clinical Chemistry, Microbiology and Immunology; Technologiepark 30 B-9052 Zwijnaarde Belgium
| | - Peter Van Eenoo
- Ghent University (UGent); Department of Clinical Chemistry, Microbiology and Immunology; Technologiepark 30 B-9052 Zwijnaarde Belgium
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Deventer K, Pozo O, Verstraete A, Van Eenoo P. Dilute-and-shoot-liquid chromatography-mass spectrometry for urine analysis in doping control and analytical toxicology. Trends Analyt Chem 2014. [DOI: 10.1016/j.trac.2013.10.012] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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28
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Wu M, Qian Y, Boyd JM, Leavey S, Hrudey SE, Krasner SW, Li XF. Identification of tobacco-specific nitrosamines as disinfection byproducts in chloraminated water. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2014; 48:1828-34. [PMID: 24422428 DOI: 10.1021/es405075g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Tobacco-specific nitrosamines (TSNAs) exist in environmental waters; however, it is unknown whether TSNAs can be produced during water disinfection. Here we report on the investigation and evidence of TSNAs as a new class of disinfection byproducts (DBPs). Using five common TSNAs, including (methylnitrosamino)-1-(3-pyridyl)-1-butanone (NNK) and 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanol (NNAL) as the targets, we first developed a solid phase extraction (SPE) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) method capable of rapidly determining these TSNAs at levels as low as 0.02 ng/L in treated water. Using this highly sensitive method, we investigated the occurrence and formation potential (FP) (precursor test conducted in the presence of chloramines) of TSNAs in treated water from two wastewater treatment plants (WWTPs) and seven drinking water treatment plants (DWTPs). NNAL was detected in the FP samples, but not in the samples before the FP test, confirming NNAL as a DBP. NNK was detected in the treated wastewater before the FP test, but its concentration increased significantly after chloramination in two of three tests. Thus, NNK could be a DBP and/or a contaminant in wastewater. Moreover, these TSNAs were detected in FP tests of wastewater-impacted DWTP plant influents in 9 of 11 samples. However, TSNAs were not detected at full-scale DWTPs, except for at one DWTP with high ammonia where breakpoint chlorination was not achieved. The concentration of the sum of five TSNAs (0.3 ng/L) was 100-fold lower than NDMA, suggesting that TSNAs have a minor contribution to total nitrosamines in water. We examined several factors in the treatment process and found that chlorine or ozone may destroy TSNA precursors and granular activated carbon (GAC) treatment may remove the precursors. Further research is warranted into the efficiency of these processes at different DWTPs using sources of varying water quality.
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Affiliation(s)
- Minghuo Wu
- Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, University of Alberta , Edmonton, Alberta, Canada T6G 2G3
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29
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Boyacı E, Gorynski K, Rodriguez-Lafuente A, Bojko B, Pawliszyn J. Introduction of solid-phase microextraction as a high-throughput sample preparation tool in laboratory analysis of prohibited substances. Anal Chim Acta 2013; 809:69-81. [PMID: 24418135 DOI: 10.1016/j.aca.2013.11.056] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/19/2013] [Accepted: 11/29/2013] [Indexed: 10/25/2022]
Abstract
A fully automated, high-throughput method based on thin-film solid-phase microextraction (SPME) and liquid chromatography-mass spectrometry was developed for simultaneous quantitative analysis of 110 doping compounds, selected from ten classes and varying in physical and chemical properties. Among four tested extraction phases, C18 blades were chosen, as they provided optimum recoveries and the lowest carryover effect. The SPME method was optimized in terms of extraction pH, ionic strength of the sample, washing solution, extraction and desorption times for analysis of urine samples. Chromatographic separation was obtained in reversed-phase model; for detection, two mass spectrometers were used: triple quadrupole and full scan orbitrap. These combinations allowed for selective analysis of targeted compounds, as well as a retrospective study for known and unknown compounds. The developed method was validated according to the Food and Drug Administration (FDA) criteria, taking into account Minimum Required Performance Level (MRPL) values required by the World Anti-Doping Agency (WADA). In addition to analysis of free substances, it was also shown that the proposed method is able to extract the glucuronated forms of the compounds. The developed assay offers fast and reliable analysis of various prohibited substances, an attractive alternative to the standard methods that are currently used in anti-doping laboratories.
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Affiliation(s)
- Ezel Boyacı
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1
| | - Krzysztof Gorynski
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1
| | - Angel Rodriguez-Lafuente
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1
| | - Barbara Bojko
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, 200 University Avenue West, Waterloo, ON, Canada N2L 3G1.
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Cui Z, Liu S, Liu Z, Li Y, Hu X, Tian J. Determination of torasemide by fluorescence quenching method with some dihalogenated fluorescein dyes as probes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2013; 114:547-552. [PMID: 23792294 DOI: 10.1016/j.saa.2013.05.080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 05/21/2013] [Accepted: 05/23/2013] [Indexed: 06/02/2023]
Abstract
A novel fluorescence quenching method for the determination of torasemide (TOR) with some dihalogenated fluorescein dyes as fluorescence probes was developed. In acidulous medium, TOR could interact with some dihalogenated fluorescein dyes such as dichlorofluorescein (DCF), dibromofluorescein (DBF) and diiodofluorescein (DIF) to form binary complexes, which could lead to fluorescence quenching of above dihalogenated fluorescein dyes. The maximum fluorescence emission wavelengths were located at 532 nm (TOR-DCF), 535 nm (TOR-DBF) and 554 nm (TOR-DIF). The relative fluorescence intensities (ΔF=F0-F) were proportional to the concentration of TOR in certain ranges. The detection limits were 4.8 ng mL(-1) for TOR-DCF system, 9.8 ng mL(-1) for TOR-DBF system and 35.1 ng mL(-1) for TOR-DIF system. The optimum reaction conditions, influencing factors were studied; and the effect of coexisting substances was investigated owing to the highest sensitivity of TOR-DCF system. In addition, the reaction mechanism, composition and structure of the complex were discussed by quantum chemical calculation and Job's method. The fluorescence quenching of dihalogenated fluorescein dyes by TOR was a static quenching process judging from the effect of temperature and the Stern-Volmer plots. The method was satisfactorily applied to the determination of TOR in tablets and human urine samples.
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Affiliation(s)
- Zhiping Cui
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
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Jovic Z, Zivanovic L, Protic A, Radisic M, Lausevic M, Malesevic M, Zecevic M. FORCED DEGRADATION STUDY OF TORASEMIDE: CHARACTERIZATION OF ITS DEGRADATION PRODUCTS. J LIQ CHROMATOGR R T 2013. [DOI: 10.1080/10826076.2012.712932] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Zarko Jovic
- a Medicines and Medical Devices Agency of Serbia , Belgrade , Serbia
| | - Ljiljana Zivanovic
- b Department of Drug Analysis , University of Belgrade – Faculty of Pharmacy , Belgrade , Serbia
| | - Ana Protic
- b Department of Drug Analysis , University of Belgrade – Faculty of Pharmacy , Belgrade , Serbia
| | - Marina Radisic
- c Department of Analytical Chemistry , University of Belgrade – Faculty of Technology and Metallurgy , Belgrade , Serbia
| | - Mila Lausevic
- c Department of Analytical Chemistry , University of Belgrade – Faculty of Technology and Metallurgy , Belgrade , Serbia
| | - Marija Malesevic
- a Medicines and Medical Devices Agency of Serbia , Belgrade , Serbia
| | - Mira Zecevic
- b Department of Drug Analysis , University of Belgrade – Faculty of Pharmacy , Belgrade , Serbia
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32
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Ho TT, Li ZG, Lin HY, Lee MR. Determination of Diuretics in Urine Using Immobilized Multi-Walled Carbon Nanotubes in Hollow Fiber Liquid-Phase Microextraction Combined with Liquid Chromatography-Tandem Mass Spectrometry. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.201200603] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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33
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Baranowska I, Magiera S, Baranowski J. Clinical applications of fast liquid chromatography: a review on the analysis of cardiovascular drugs and their metabolites. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 927:54-79. [PMID: 23462623 DOI: 10.1016/j.jchromb.2013.02.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2012] [Revised: 01/29/2013] [Accepted: 02/01/2013] [Indexed: 01/16/2023]
Abstract
One of the major challenges facing the medicine today is developing new therapies that enhance human health. To help address these challenges the utilization of analytical technologies and high-throughput automated platforms has been employed; in order to perform more experiments in a shorter time frame with increased data quality. In the last decade various analytical strategies have been established to enhance separation speed and efficiency in liquid chromatography applications. Liquid chromatography is an increasingly important tool for monitoring drugs and their metabolites. Furthermore, liquid chromatography has played an important role in pharmacokinetics and metabolism studies at these drug development stages since its introduction. This paper provides an overview of current trends in fast chromatography for the analysis of cardiovascular drugs and their metabolites in clinical applications. Current trends in fast liquid chromatographic separations involve monolith technologies, fused-core columns, high-temperature liquid chromatography (HTLC) and ultra-high performance liquid chromatography (UHPLC). The high specificity in combination with high sensitivity makes it an attractive complementary method to traditional methodology used for routine applications. The practical aspects of, recent developments in and the present status of fast chromatography for the analysis of biological fluids for therapeutic drug and metabolite monitoring, pharmacokinetic studies and bioequivalence studies are presented.
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Affiliation(s)
- Irena Baranowska
- Department of Analytical Chemistry, Silesian University of Technology, 7M. Strzody Str., 44-100 Gliwice, Poland.
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34
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Tsyrulneva I, Zaporozhets O. Simple and Rapid Determination of Diuretics by Luminescent Method. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/pp.2013.47075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Niessen WMA. Fragmentation of toxicologically relevant drugs in negative-ion liquid chromatography-tandem mass spectrometry. MASS SPECTROMETRY REVIEWS 2012; 31:626-665. [PMID: 22829116 DOI: 10.1002/mas.20359] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Revised: 03/13/2012] [Accepted: 03/13/2012] [Indexed: 06/01/2023]
Abstract
Negative-ion LC-MS analysis of drugs is applied far less frequently than positive-ion LC-MS. Data on the interpretation of negative-ion MS-MS spectra are even more scarce. Therefore, following the recent review on the class-specific fragmentation of toxicologically relevant compounds in positive-ion MS-MS, it was decided to perform a similar study in negative-ion MS-MS. To this end, a set of over 500 negative-ion MS-MS spectra was collected from three libraries applied in toxicological general unknown screening and systematic toxicological analysis. The compounds involved were classified by chemical and therapeutic class. The MS-MS spectra were manually interpreted and relevant interpretation data were searched for in the scientific literature. The emphasis in the discussion is on class-specific fragmentation, because discussing fragmentation of all individual compounds would take far too much space. Negative-ion MS-MS fragmentation is discussed for a wide variety of toxicologically relevant compounds, including dihydropyridine calcium channel blockers, diuretics, barbiturates, anti-inflammatory drugs, anti-diabetics, sulfonamide and betalactam antibiotics, and a number of classes of pesticides.
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Affiliation(s)
- W M A Niessen
- hyphen MassSpec, de Wetstraat 8, 2332 XT Leiden, The Netherlands.
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36
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Deventer K, Pozo OJ, Delbeke FT, Van Eenoo P. Direct quantification of morphine glucuronides and free morphine in urine by liquid chromatography–tandem mass spectrometry. Forensic Toxicol 2012. [DOI: 10.1007/s11419-012-0135-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Jovic Z, Zivanovic L, Radisic M, Protic A, Malesevic M. Chemometrically assisted development and validation of LC-UV and LC-MS methods for simultaneous determination of torasemide and its impurities. J Chromatogr Sci 2012; 50:324-34. [PMID: 22407343 DOI: 10.1093/chromsci/bms033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Complete evaluation of chromatographic behavior and establishment of optimal experimental conditions for determination of torasemide and its four impurities are determined by experimental design. Fractional factorial and 3(n) full factorial design were employed for efficient and rapid optimization of liquid chromatography-ultraviolet and liquid chromatography-mass spectrometry (LC-MS) methods. Separation is achieved on a Zorbax SB C(18) analytical column (250 x 4.6 mm, 5 µm) with mobile phase consisting of acetonitrile and 10 mM ammonium formate (pH 2.5 with formic acid) in gradient mode. The flow rate is 1 mL min(-1), the temperature of the column is 25 °C and UV detection is performed at 290 nm. The efficiency of ionization in electrospray ionization is higher than in atmospheric pressure chemical ionization mode; therefore, it is further used for analysis of torasemide and its impurities. Both methods meet all validation criteria. The calibration curves show high linearity with the coefficients of correlation (r) greater than 0.9982. The obtained recovery values (95.78-104.92%) and relative standard deviation values (0.12-5.56%) indicate good accuracy and precision. Lower limit of detection (LOD) and limit of quantitation (LOQ) values are obtained with the LC-MS method, indicating higher sensitivity of the proposed method.
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Affiliation(s)
- Zarko Jovic
- Medicines and Medical Devices Agency of Serbia, National Control Laboratory, Vojvode Stepe 458, 11000 Belgrade, Serbia
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Girón AJ, Deventer K, Roels K, Van Eenoo P. Development and validation of an open screening method for diuretics, stimulants and selected compounds in human urine by UHPLC-HRMS for doping control. Anal Chim Acta 2012; 721:137-46. [PMID: 22405312 DOI: 10.1016/j.aca.2012.02.002] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 01/29/2012] [Accepted: 02/02/2012] [Indexed: 11/18/2022]
Abstract
A new doping control screening method for the analysis of diuretics and stimulants using ultra high pressure liquid chromatography-high resolution Orbitrap mass spectrometry has been developed. The screening was performed in full scan MS with scan-to-scan polarity switching which allowed to detect more than 120 target analytes. Sample preparation was limited to 10-fold dilution of the urine into the internal standard solution followed by injection. Total run time per sample was 10 min. Validation of the method yielded detection limits for diuretics between 25 and 250 ng mL(-1) and for stimulants between 5 and 500 ng mL(-1). The screening method has been implemented in routine doping control.
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Affiliation(s)
- A Jiménez Girón
- Department of Analytical Chemistry, University of Extremadura, Badajoz, Spain.
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Zaporozhets O, Tsyrulneva I, Ischenko M. Determination of 8 Diuretics and Probenecid in Human Urine by Gas Chromatography-Mass Spectrometry: Confirmation Procedure. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ajac.2012.34044] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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40
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Marclay F, Grata E, Perrenoud L, Saugy M. A one-year monitoring of nicotine use in sport: Frontier between potential performance enhancement and addiction issues. Forensic Sci Int 2011; 213:73-84. [DOI: 10.1016/j.forsciint.2011.05.026] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 05/04/2011] [Accepted: 05/23/2011] [Indexed: 10/18/2022]
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41
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Badoud F, Guillarme D, Boccard J, Grata E, Saugy M, Rudaz S, Veuthey JL. Analytical aspects in doping control: challenges and perspectives. Forensic Sci Int 2011; 213:49-61. [PMID: 21824736 DOI: 10.1016/j.forsciint.2011.07.024] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 07/07/2011] [Accepted: 07/12/2011] [Indexed: 01/10/2023]
Abstract
Since the first anti-doping tests in the 1960s, the analytical aspects of the testing remain challenging. The evolution of the analytical process in doping control is discussed in this paper with a particular emphasis on separation techniques, such as gas chromatography and liquid chromatography. These approaches are improving in parallel with the requirements of increasing sensitivity and selectivity for detecting prohibited substances in biological samples from athletes. Moreover, fast analyses are mandatory to deal with the growing number of doping control samples and the short response time required during particular sport events. Recent developments in mass spectrometry and the expansion of accurate mass determination has improved anti-doping strategies with the possibility of using elemental composition and isotope patterns for structural identification. These techniques must be able to distinguish equivocally between negative and suspicious samples with no false-negative or false-positive results. Therefore, high degree of reliability must be reached for the identification of major metabolites corresponding to suspected analytes. Along with current trends in pharmaceutical industry the analysis of proteins and peptides remains an important issue in doping control. Sophisticated analytical tools are still mandatory to improve their distinction from endogenous analogs. Finally, indirect approaches will be discussed in the context of anti-doping, in which recent advances are aimed to examine the biological response of a doping agent in a holistic way.
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Affiliation(s)
- Flavia Badoud
- School of Pharmaceutical Sciences, University of Geneva and Lausanne, 20 Bd d'Yvoy, 1211 Geneva 4, Switzerland
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42
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Niessen WMA. Fragmentation of toxicologically relevant drugs in positive-ion liquid chromatography-tandem mass spectrometry. MASS SPECTROMETRY REVIEWS 2011; 30:626-663. [PMID: 21294151 DOI: 10.1002/mas.20332] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2010] [Revised: 01/05/2011] [Accepted: 01/05/2011] [Indexed: 05/30/2023]
Abstract
The identification of drugs and related compounds by LC-MS-MS is an important analytical challenge in several application areas, including clinical and forensic toxicology, doping control analysis, and environmental analysis. Although target-compound based analytical strategies are most frequently applied, at some point the information content of the MS-MS spectra becomes relevant. In this article, the positive-ion MS-MS spectra of a wide variety of drugs and related substances are discussed. Starting point was an MS-MS mass spectral library of toxicologically relevant compounds, available on the internet. The positive-ion MS-MS spectra of ∼570 compounds were interpreted by chemical and therapeutic class, thus involving a wide variety of drug compound classes, such benzodiazepines, beta-blockers, angiotensin-converting enzyme inhibitors, phenothiazines, dihydropyridine calcium channel blockers, diuretics, local anesthetics, vasodilators, as well as various subclasses of anti-diabetic, antidepressant, analgesic, and antihistaminic drugs. In addition, the scientific literature was searched for available MS-MS data of these compound classes and the interpretation thereof. The results of this elaborate study are presented in this article. For each individual compound class, the emphasis is on class-specific fragmentation, as discussing fragmentation of all individual compounds would take far too much space. The recognition of class-specific fragmentation may be quite informative in determining the compound class of a specific unknown, which may further help in the identification. In addition, knowledge on (class-specific) fragmentation may further help in the optimization of the selectivity in targeted analytical approaches of compounds of one particular class.
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Deventer K, Roels K, Delbeke FT, Van Eenoo P. Prevalence of legal and illegal stimulating agents in sports. Anal Bioanal Chem 2011; 401:421-32. [DOI: 10.1007/s00216-011-4863-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2011] [Revised: 02/25/2011] [Accepted: 03/01/2011] [Indexed: 11/29/2022]
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A simple high pH liquid chromatography–tandem mass spectrometry method for basic compounds: Application to ephedrines in doping control analysis. J Chromatogr A 2011; 1218:2098-105. [DOI: 10.1016/j.chroma.2010.10.104] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 10/18/2010] [Accepted: 10/27/2010] [Indexed: 11/23/2022]
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Thevis M, Thomas A, Schänzer W. Current role of LC-MS(/MS) in doping control. Anal Bioanal Chem 2011; 401:405-20. [DOI: 10.1007/s00216-011-4859-9] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 02/24/2011] [Accepted: 02/26/2011] [Indexed: 11/30/2022]
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Chebbah C, Pozo OJ, Deventer K, Van Eenoo P, Delbeke FT. Direct quantification of 11-nor-Delta(9)-tetrahydrocannabinol-9-carboxylic acid in urine by liquid chromatography/tandem mass spectrometry in relation to doping control analysis. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2010; 24:1133-1141. [PMID: 20301101 DOI: 10.1002/rcm.4499] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
An accurate and precise method for the quantification of 11-nor-Delta(9)-tetrahydrocannabinol-9-carboxylic acid (THCA) in urine by liquid chromatography/tandem mass spectrometry (LC/MS/MS) for doping analysis purposes has been developed. The method involves the use of only 200 microL of urine and the use of D(9)-THCA as internal standard. No extraction procedure is used. The urine samples are hydrolysed using sodium hydroxide and diluted with a mixture of methanol/glacial acetic acid (1:1). Chromatographic separation is achieved using a C8 column with gradient elution. All MS and MS/MS parameters were optimised in both positive and negative electrospray ionisation modes. For the identification and the quantification of THCA three product ions are monitored in both ionisation modes. The method is linear over the studied range (5-40 ng/mL), with satisfactory intra-and inter-assay precision, and the relative standard deviations (RSDs) are lower than 15%. Good accuracy is achieved with bias less than 10% at all levels tested. No significant matrix effects are observed. The selectivity and specificity are satisfactory, and no interferences are detected. The LC/MS/MS method was applied for the analysis of 48 real urine samples previously analysed with a routine gas chromatography/mass spectrometry (GC/MS) method. A good correlation between the two methods was obtained (r(2) > 0.98) with a slope close to 1.
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Affiliation(s)
- C Chebbah
- Doping Control Laboratory, Department of Clinical Biology, Microbiology and Immunology, Ghent University - UGent, Technologiepark 30, B-9052 Zwijnaarde, Belgium.
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47
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Annual banned-substance review: analytical approaches in human sports drug testing. Drug Test Anal 2010; 2:149-61. [DOI: 10.1002/dta.128] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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48
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BARANOWSKA I, WILCZEK A, BARANOWSKI J. Rapid UHPLC Method for Simultaneous Determination of Vancomycin, Terbinafine, Spironolactone, Furosemide and Their Metabolites: Application to Human Plasma and Urine. ANAL SCI 2010; 26:755-9. [DOI: 10.2116/analsci.26.755] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Irena BARANOWSKA
- Department of Analytical Chemistry, Chemical Faculty, Silesian University of Technology
| | - Andrzej WILCZEK
- Department of Analytical Chemistry, Chemical Faculty, Silesian University of Technology
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