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Bartosova L, Balis P, Garaj V, Kovac A, Rajtik T, Piestansky J. A simple UHPLC-MS/MS method for determination of SET2, a selective antagonist of TRPV2 receptor, in rat plasma samples. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1235:124067. [PMID: 38422619 DOI: 10.1016/j.jchromb.2024.124067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2024] [Revised: 02/19/2024] [Accepted: 02/21/2024] [Indexed: 03/02/2024]
Abstract
Targeting the transient receptor potential vanilloid 2 channels (TRPV2) in order to alleviate or reverse the course of several diseases including multiple cancers, cardiovascular, immunological, or neurological disorders have been a matter of focus for several years now. SET2, a selective TRPV2 inhibitor, represents an innovative molecule which came into recognition in 2019 and seems to be a promising therapeutic modality in cancer and cardiac diseases. Drug discovery and bioanalysis in clinical environment demands simple, excellent, highly reliable, fast, sensitive, and selective analytical approaches which enable unambiguous identification and quantification of demanded molecule. Here, a targeted ultra-high-performance liquid chromatography - tandem mass spectrometry with electrospray ionization was developed for the quantification of SET2 in plasma samples. The developed method enabled analysis of approx. 15 samples within one hour. Simplicity of the whole analytical procedure can be emphasized by a very simple sample pretreatment based only on the protein precipitation with organic acid (here, 2 M tricholoroacetic acid). The validation procedure was characterized by promising validation parameters and excellent sensitivity what was documented by the limit of detection value at pg.mL-1 concentration level. Analytical validation reported intra- and interday accuracy < 15 % for all quality control samples concentration levels. Similarly, excellent level of intra- (0.1 - 4.8 %) and interday (0.5 - 3.3 %) precision for the tested quality control samples was obtained. The applicability of the developed method was proven by quantifying SET2 concentration levels in plasma samples obtained from Wistar rats that were administered this drug intraperitoneally at a dose of 25 mg/kg. We expect that our new analytical method represents a very attractive tool that could be easily implemented in pharmacokinetics studies and/or therapeutic drug monitoring. Moreover, its applicability was confirmed by the new practicability evaluation metric tool.
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Affiliation(s)
- Linda Bartosova
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic
| | - Peter Balis
- Centre of Experimental Medicine, Slovak Academy of Sciences, 841 04 Bratislava, Slovak Republic
| | - Vladimir Garaj
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic
| | - Andrej Kovac
- Institute of Neuroimmunology, Slovak Academy of Sciences, Dubravska cesta 9, SK-845 10 Bratislava, Slovak Republic
| | - Tomas Rajtik
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic; Centre of Experimental Medicine, Slovak Academy of Sciences, 841 04 Bratislava, Slovak Republic.
| | - Juraj Piestansky
- Institute of Neuroimmunology, Slovak Academy of Sciences, Dubravska cesta 9, SK-845 10 Bratislava, Slovak Republic; Department of Galenic Pharmacy, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic; Toxicological and Antidoping Center, Faculty of Pharmacy, Comenius University in Bratislava, Odbojarov 10, SK-832 32 Bratislava, Slovak Republic.
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Schüller M, Hansen FA, Pedersen-Bjergaard S. Extraction performance of electromembrane extraction and liquid-phase microextraction in prototype equipment. J Chromatogr A 2023; 1710:464440. [PMID: 37832461 DOI: 10.1016/j.chroma.2023.464440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 10/05/2023] [Accepted: 10/08/2023] [Indexed: 10/15/2023]
Abstract
In this comparative study, the performance of liquid-phase microextraction and electromembrane extraction in prototype equipment was evaluated for extraction of ninety basic substances from plasma. Using a commercial EME device based on conductive vials enabled a standardized and comprehensive comparison between the two methods. Extractions were performed from a pH-adjusted donor solution, across an organic liquid membrane immobilized in a porous polypropylene membrane, and into an acidic acceptor solution. In LPME, dodecyl acetate was used as the extraction solvent, while 2-nitrophenyl octyl ether was used for EME with an electric field applied across the system. To assess the extraction performance, extraction recovery plots and extraction time curves were constructed and analyzed. These plots provided insights into the efficiency and effectiveness of LPME and EME, allowing users to make better decisions about the most suitable method for a specific bioanalytical application. Both LPME and EME were effective for substances with 2.0 < log P < 4.0, with EME showing faster extraction kinetics. Small (200 µL) and large vials (600 µL) were compared, showing that smaller vials improved kinetics markedly in both techniques. Carrier-mediated extraction showed improved performance for analytes with log P < 2 in EME, however, with some limitations due to system instability. This is, to our knowledge, the first time LPME was performed in the commercial vial-based equipment. An evaluation of vial-based LPME investigating linearity, precision, accuracy, and matrix effects showed promising results. These findings contribute to a general understanding of the performance differences in vial-based LPME and EME.
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Affiliation(s)
- Maria Schüller
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway
| | - Frederik André Hansen
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway
| | - Stig Pedersen-Bjergaard
- Department of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316 Oslo, Norway; Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
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Serrano-Heras G, Díaz-Maroto I, Castro-Robles B, Carrión B, Perona-Moratalla AB, Gracia J, Arteaga S, Hernández-Fernández F, García-García J, Ayo-Martín O, Segura T. Isolation and Quantification of Blood Apoptotic Bodies, a Non-invasive Tool to Evaluate Apoptosis in Patients with Ischemic Stroke and Neurodegenerative Diseases. Biol Proced Online 2020; 22:17. [PMID: 32765191 PMCID: PMC7395395 DOI: 10.1186/s12575-020-00130-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 07/10/2020] [Indexed: 12/29/2022] Open
Abstract
Background Improper regulation of apoptosis has been postulated as one of the main factors that contributes to the etiology and/or progression of several prevalent diseases, including ischemic stroke and neurodegenerative pathologies. Consequently, in the last few years, there has been an ever-growing interest in the in vivo study of apoptosis. The clinical application of the tissue sampling and imaging approaches to analyze apoptosis in neurological diseases is, however, limited. Since apoptotic bodies are membrane vesicles that are released from fragmented apoptotic cells, it follows that the presence of these vesicles in the bloodstream is likely due to the apoptotic death of cells in tissues. We therefore propose to use circulating apoptotic bodies as biomarkers for measuring apoptotic death in patients with ischemic stroke and neurodegenerative diseases. Results Since there is no scientific literature establishing the most appropriate method for collecting and enumerating apoptotic bodies from human blood samples. Authors, here, describe a reproducible centrifugation-based method combined with flow cytometry analysis to isolate and quantify plasma apoptotic bodies of patients with ischemic stroke, multiple sclerosis, Parkinson’s disease and also in healthy controls. Electron microscopy, dynamic light scattering and proteomic characterization in combination with flow cytometry studies revealed that our isolation method achieves notable recovery rates of highly-purified intact apoptotic bodies. Conclusions This easy, minimally time consuming and effective procedure for isolating and quantifying plasma apoptotic bodies could help physicians to implement the use of such vesicles as a non-invasive tool to monitor apoptosis in patients with cerebrovascular and neurodegenerative diseases for prognostic purposes and for monitoring disease activity.
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Affiliation(s)
- Gemma Serrano-Heras
- Research Unit, Complejo Hospitalario Universitario de Albacete, Laurel, s/n, CP: 02008, Albacete, Spain
| | - Inmaculada Díaz-Maroto
- Department of Neurology, Complejo Hospitalario Universitario de Albacete, Albacete, Spain
| | - Beatriz Castro-Robles
- Research Unit, Complejo Hospitalario Universitario de Albacete, Laurel, s/n, CP: 02008, Albacete, Spain
| | - Blanca Carrión
- Research Unit, Complejo Hospitalario Universitario de Albacete, Laurel, s/n, CP: 02008, Albacete, Spain
| | - Ana B Perona-Moratalla
- Department of Neurology, Complejo Hospitalario Universitario de Albacete, Albacete, Spain
| | - Julia Gracia
- Department of Neurology, Complejo Hospitalario Universitario de Albacete, Albacete, Spain
| | - Sandra Arteaga
- Research Unit, Complejo Hospitalario Universitario de Albacete, Laurel, s/n, CP: 02008, Albacete, Spain
| | | | - Jorge García-García
- Department of Neurology, Complejo Hospitalario Universitario de Albacete, Albacete, Spain
| | - Oscar Ayo-Martín
- Department of Neurology, Complejo Hospitalario Universitario de Albacete, Albacete, Spain
| | - Tomás Segura
- Department of Neurology, Complejo Hospitalario Universitario de Albacete, Albacete, Spain.,Instituto de Investigación en Discapacidades Neurológicas (IDINE), Facultad de Medicina, Universidad de Castilla-La Mancha, Albacete, Spain
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Purohit TJ, Wu Z, Hanning SM. Simple and reliable extraction and a validated high performance liquid chromatographic assay for quantification of amoxicillin from plasma. J Chromatogr A 2020; 1611:460611. [PMID: 31627968 DOI: 10.1016/j.chroma.2019.460611] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 10/06/2019] [Accepted: 10/08/2019] [Indexed: 10/25/2022]
Abstract
This study presents the development of an efficient extraction protocol for amoxicillin from plasma with improved solubility and stability using pH control. Solubility and stability of amoxicillin in commonly used extraction solvents were determined using a newly developed stability-indicating high-performance liquid chromatography (HPLC) method. Following this, protein precipitation (PP) mediated sample purification protocol was developed and validated along with the HPLC method for the extracted amoxicillin from rabbit plasma. The protocol was applied in a pharmacokinetic study in rabbits. A five-fold increase in solubility and two-fold increase in stability of amoxicillin was found by addition of acetate buffer (0.1 M, pH 5.0) in acetonitrile. PP mediated extraction protocol containing acetate buffer-acetonitrile (1:18 v/v) resulted in an extraction recovery of >80% for all the samples. The HPLC assay following extraction was found linear (R2 >0.9999) over the range of 0.2-20 µg/mL with a lower limit of quantification of 0.2 µg/mL. The accuracy of the quality control samples was found between 97-115% and the relative standard deviation (RSD) was found to be below 6% for all samples. The samples were stable in the mobile phase (pH 5.0) for 72 h post-extraction. Amoxicillin-spiked plasma samples were found stable for up to three freeze-and-thaw cycles but, nearly 50% samples had degraded following storage for two months at -20 °C. Pharmacokinetic analysis indicated a half-life of amoxicillin of nearly 1 h following intravenous injection in rabbits, which is similar to that in humans. Thus, a simple and repeatable, extraction protocol was developed using pH control for quantification of amoxicillin from plasma based on its physicochemical properties.
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Affiliation(s)
- Trusha J Purohit
- School of Pharmacy, The University of Auckland, 85 Park Road, Grafton, Auckland 1010, New Zealand
| | - Zimei Wu
- School of Pharmacy, The University of Auckland, 85 Park Road, Grafton, Auckland 1010, New Zealand
| | - Sara M Hanning
- School of Pharmacy, The University of Auckland, 85 Park Road, Grafton, Auckland 1010, New Zealand.
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Nagao A, Kaneko M, Kazama F, Oda N, Nojima M, Suzuki-Inoue K, Suzuki T. Discrepancies between the one-stage clotting assay and chromogenic assay in patients with hemophilia A receiving standard or extended half-life factor VIII products in clinical settings. Thromb Res 2019; 185:150-152. [PMID: 31816555 DOI: 10.1016/j.thromres.2019.11.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 09/30/2019] [Accepted: 11/18/2019] [Indexed: 10/25/2022]
Affiliation(s)
- Azusa Nagao
- Department of Blood Coagulation, Ogikubo Hospital, Japan.
| | - Makoto Kaneko
- Department of Laboratory Medicine, Tokyo Medical University Hospital, Japan
| | - Fuminori Kazama
- Department of Clinical Laboratory, University of Yamanashi Hospital, Japan
| | - Nozomi Oda
- Department of Clinical Laboratory, University of Yamanashi Hospital, Japan
| | - Masanori Nojima
- Center for Translational Research, The Institute of Medical Science Hospital, The University of Tokyo, Tokyo, Japan
| | | | - Takashi Suzuki
- Department of Blood Coagulation, Ogikubo Hospital, Japan
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Rezaei M, Khamaneh AM, Zarghami N, Vosoughi A, Hashemzadeh S. Evaluating pre- and post-operation plasma miRNAs of papillary thyroid carcinoma (PTC) patients in comparison to benign nodules. BMC Cancer 2019; 19:690. [PMID: 31307429 PMCID: PMC6631438 DOI: 10.1186/s12885-019-5849-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Accepted: 06/18/2019] [Indexed: 12/20/2022] Open
Abstract
Background Thyroid cancer is the most common endocrinology cancer that its incidence has increased in recent decades. miRNAs are new biomarkers in recent studies in the diagnosis and follow-up of these patients. Methods Blood and thyroid tissue samples were obtained from two groups of included patients (PTC and benign nodules), pre- and post-operation. miRNAs were extracted from these plasma samples and were measured quantitatively. After cDNA synthesis, qPCR was carried out. Then tissue samples were investigated, and their relation to miR expression was studied. These results were analyzed by paired- and independent samples t-test, and non-parametric tests. Results miR-222 and miR-181a declined in PTC patients before and after surgery, significantly (P < 0.001 for both groups), with no significant difference in control group before and after surgery (P = 0.61 for miR-222 and P = 0.06 for miR-181a). The difference between the two groups, pre-and post-operation, was statistically significant (P = 0.01 for miR-222 and P < 0.001 for miR-181a). Comparing case and control groups, pre- and post-operatively, yielded no significant difference, in miR-155-5p levels (P = 0.61 and P = 0.53, respectively). Comparing PTC and control groups before surgery showed a significant difference (P = 0.01), while no significant difference was observed comparing them after surgery, in miR146-a (P = 0.27). Our results depicted a higher miR-155-5p and miR-146a expression before surgery than after it (P < 0.001 in both groups, for both miRs). We found a significant relationship between miR-222 and BRAFV600E mutation and significantly higher levels of miR-181a with increasing tumor size in PTC patients. Conclusion miR-222 showed overexpression in all PTC cases, which is indicative of a relation between miRNA and PTC. Also, comparing miR-181 and miR-146a showed a significant difference between cancerous and benign cases. miR-155-5p as an inflammatory factor, showed no significant changes, comparing two groups.
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Affiliation(s)
- Mahsa Rezaei
- Department of General Surgery, Tabriz University of Medical Sciences, Imam Reza Hospital, Golgasht Street, Tabriz, Iran
| | - Amir Mahdi Khamaneh
- Department of Molecular Medicine Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nosratollah Zarghami
- Department of Molecular Medicine Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Clinical Biochemistry and Laboratory Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Armin Vosoughi
- Neurosciences Research Center (NSRC), Faculty of Medicine, Tabriz University of Medical Sciences, Imam Reza Hospital, Golgasht Street, Tabriz, Iran.
| | - Shahriar Hashemzadeh
- Department of General Surgery, Tabriz University of Medical Sciences, Imam Reza Hospital, Golgasht Street, Tabriz, Iran. .,Tuberculosis and Lung Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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Souza ID, Hantao LW, Queiroz MEC. Polymeric ionic liquid open tubular capillary column for on-line in-tube SPME coupled with UHPLC-MS/MS to determine endocannabinoids in plasma samples. Anal Chim Acta 2018; 1045:108-116. [PMID: 30454565 DOI: 10.1016/j.aca.2018.08.062] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 08/27/2018] [Accepted: 08/30/2018] [Indexed: 01/10/2023]
Abstract
This manuscript describes the development of wall-coated open tubular capillary column with polymeric ionic liquids (PILs) for on-line in-tube solid phase microextraction coupled with ultra high-performance liquid chromatography tandem mass spectrometry (in-tube SPME/UHPLC-MS/MS) to determine anandamide (AEA) and 2-arachidonoyl glycerol (2 A G) in plasma samples. Selective PILs were synthetized from the [VC6IM][Cl], [VC16IM][Br], and [(VIM)2C10]2 [Br] - ionic liquids - by in-situ thermal-initiated polymerization in a fused silica capillary column for in-tube SPME. The synthesis procedure was optimized, and the capillary columns were characterized using spectroscopic and chromatography techniques. The chemically bonded and cross-linked PIL-based sorbent phase (thickness coating: 1.7 μm) presented high chemical and mechanical stability. Among the sorbents evaluated, the PIL-based capillary, [VC16IM][Br]/[(VIM)2C10]2 [Br] presented the best performance with a sorption capacity of 37,311 ng cm-3 and 48,307 ng cm-3 for AEA and 2 A G, respectively. This capillary was reused more than ninety times without significant changes in extraction efficiency. The in-tube SPME-UHPLC-MS/MS method presented a linear range from 0.1 ng mL-1 to 100 ng mL-1 for AEA, and from 0.05 ng mL-1 to 100 ng mL-1 for 2 A G, with coefficients of determination higher than 0.99, p-value for Lack-of-fit test higher than 0.05 (α of 0.05), precision with coefficient of variation (CV) values ranging from 1.6 to 14.0% and accuracy with relative standard deviation (RSD) values from -19.6% to 13.2%. This method was successfully applied to determine AEA and 2 A G in plasma patients with Parkinson's disease. The concentrations in these plasma samples ranged from 0.14 to 0.46 ng mL-1 for AEA and from <0.05 ng mL-1 to 0.51 ng mL-1 for 2-AG.
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Affiliation(s)
- Israel D Souza
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Leandro W Hantao
- Instituto de Química, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Maria Eugênia C Queiroz
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
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Vu AP, Nguyen TN, Do TT, Doan TH, Ha TH, Ta TT, Nguyen HL, Hauser PC, Nguyen TAH, Mai TD. Clinical screening of paraquat in plasma samples using capillary electrophoresis with contactless conductivity detection: Towards rapid diagnosis and therapeutic treatment of acute paraquat poisoning in Vietnam. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1060:111-117. [PMID: 28609698 DOI: 10.1016/j.jchromb.2017.06.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 05/26/2017] [Accepted: 06/05/2017] [Indexed: 10/19/2022]
Abstract
The employment of a purpose-made capillary electrophoresis (CE) instrument with capacitively coupled contactless conductivity detection (C4D) as a simple and cost-effective solution for clinical screening of paraquat in plasma samples for early-stage diagnosis of acute herbicide poisoning is reported. Paraquat was determined using an electrolyte composed of 10mM histidine adjusted to pH 4 with acetic acid. A detection limit of 0.5mg/L was achieved. Good agreement between results from CE-C4D and the confirmation method (HPLC-UV) was obtained, with relative errors for the two pairs of data better than 20% for 31 samples taken from paraquat-intoxicated patients. The results were used by medical doctors for identification and prognosis of acute paraquat poisoning cases. The objective of the work is the deployment of the developed approach in rural areas in Vietnam as a low-cost solution to reduce the mortality rate due to accidental or suicidal ingestion of paraquat.
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Affiliation(s)
- Anh Phuong Vu
- Poison Control Center, Bach Mai Hospital, 78 Giai Phong road, Dong Da, Hanoi, Viet Nam; Department of Analytical Chemistry, Faculty of Chemistry, VNU University of Science, Vietnam National University, Hanoi - 19 Le Thanh Tong, Hanoi, Viet Nam(1)
| | - Thi Ngan Nguyen
- Poison Control Center, Bach Mai Hospital, 78 Giai Phong road, Dong Da, Hanoi, Viet Nam; Department of Analytical Chemistry, Faculty of Chemistry, VNU University of Science, Vietnam National University, Hanoi - 19 Le Thanh Tong, Hanoi, Viet Nam(1)
| | - Thi Trang Do
- Poison Control Center, Bach Mai Hospital, 78 Giai Phong road, Dong Da, Hanoi, Viet Nam; Department of Analytical Chemistry, Faculty of Chemistry, VNU University of Science, Vietnam National University, Hanoi - 19 Le Thanh Tong, Hanoi, Viet Nam(1)
| | - Thu Ha Doan
- Poison Control Center, Bach Mai Hospital, 78 Giai Phong road, Dong Da, Hanoi, Viet Nam
| | - Tran Hung Ha
- Poison Control Center, Bach Mai Hospital, 78 Giai Phong road, Dong Da, Hanoi, Viet Nam
| | - Thi Thao Ta
- Department of Analytical Chemistry, Faculty of Chemistry, VNU University of Science, Vietnam National University, Hanoi - 19 Le Thanh Tong, Hanoi, Viet Nam(1)
| | - Hung Long Nguyen
- Vietnam Food Administration, Ministry of Health, 138A Giang Vo, Ba Đinh, Hanoi, Viet Nam
| | - Peter C Hauser
- University of Basel, Department of Chemistry, Spitalstrasse 51, 4056 Basel, Switzerland
| | - Thi Anh Huong Nguyen
- Department of Analytical Chemistry, Faculty of Chemistry, VNU University of Science, Vietnam National University, Hanoi - 19 Le Thanh Tong, Hanoi, Viet Nam(1).
| | - Thanh Duc Mai
- PNAS, Institut Galien de Paris-Sud, Faculté de Pharmacie, Université Paris-Sud, CNRS, 5 rue JB Clément, 92296 Châtenay-Malabry, France.
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Marchioni C, de Souza ID, Grecco CF, Crippa JA, Tumas V, Queiroz MEC. A column switching ultrahigh-performance liquid chromatography-tandem mass spectrometry method to determine anandamide and 2-arachidonoylglycerol in plasma samples. Anal Bioanal Chem 2017; 409:3587-3596. [PMID: 28337517 DOI: 10.1007/s00216-017-0300-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Revised: 02/17/2017] [Accepted: 03/03/2017] [Indexed: 12/11/2022]
Abstract
This study reports a fast, sensitive, and selective column switching ultrahigh-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) method to determine the endocannabinoids (eCBs), anandamide (AEA), and 2-arachidonoylglycerol (2-AG) in plasma samples. This bidimensional system used a restricted access media column (RP-8 ADS, 25 mm × 4 mm × 25 μM) in the first dimension and a core-shell Kinetex C18 (100 mm × 2, 1.7 mm × 1 μM) column in the second dimension, followed by detection in a mass spectrometer triple quadrupole (multiple reactions monitoring mode) operating in the positive mode. RP-8 ADS was used for trace enrichment of eCBs (reverse phase partitioning) and macromolecular matrix size exclusion; the core-shell column was used for the chromatographic separation. The column switching UHPLC-MS/MS method presented a linear range spanning from 0.1 ng mL-1 (LOQ) to 6 ng mL-1 for AEA and from 0.04 ng mL-1 (LOQ) to 10 ng mL-1 for 2-AG. Excluding the LLOQ values, the precision assays provided coefficients of variation lower than 8% and accuracy with relative standard error values lower than 14%. Neither carryover nor matrix effects were detected. This high-throughput column switching method compared to conventional methods is time saving as it involves fewer steps, consumes less solvent, and presents lower LLOQ. The column switching UHPLC-MS/MS method was successfully applied to determine AEA and 2-AG in plasma samples obtained from Alzheimer's disease patients. Graphical abstract A column switching ultra high-performance liquid chromatography-tandem mass spectrometry method using RP-8 ADS column and core shell column to determine endocannabinoids in plasma samples.
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Affiliation(s)
- Camila Marchioni
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo (USP), Avenida Bandeirantes, 3900, São Paulo, Ribeirão Preto, CEP 14040-901, Brazil
| | - Israel Donizeti de Souza
- Departamento de Química, Universidade de São Paulo (USP), Avenida Bandeirantes, 3900, São Paulo, Ribeirão Preto, CEP 14040-901, Brazil
| | - Caroline Fernandes Grecco
- Departamento de Química, Universidade de São Paulo (USP), Avenida Bandeirantes, 3900, São Paulo, Ribeirão Preto, CEP 14040-901, Brazil
| | - José Alexandre Crippa
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Vitor Tumas
- Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Maria Eugênia Costa Queiroz
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo (USP), Avenida Bandeirantes, 3900, São Paulo, Ribeirão Preto, CEP 14040-901, Brazil.
- Departamento de Química, Universidade de São Paulo (USP), Avenida Bandeirantes, 3900, São Paulo, Ribeirão Preto, CEP 14040-901, Brazil.
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Vårdal L, Askildsen HM, Gjelstad A, Øiestad EL, Edvardsen HME, Pedersen-Bjergaard S. Parallel artificial liquid membrane extraction of new psychoactive substances in plasma and whole blood. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1048:77-84. [PMID: 28226266 DOI: 10.1016/j.jchromb.2017.02.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 02/08/2017] [Accepted: 02/10/2017] [Indexed: 01/26/2023]
Abstract
Parallel artificial liquid membrane extraction (PALME) was combined with ultra-high performance liquid chromatography-mass spectrometry (UHPLC-MS) and the potential for screening of new psychoactive substances (NPS) was investigated for the first time. PALME was performed in 96-well format comprising a donor plate, a supported liquid membrane (SLM), and an acceptor plate. Uncharged NPS were extracted from plasma or whole blood, across an organic SLM, and into an aqueous acceptor solution, facilitated by a pH gradient. MDAI (5,6-methylenedioxy-2-aminoindane), methylone, PFA (para-fluoroamphetamine), mCPP (meta-chlorophenylpiperazine), pentedrone, methoxetamine, MDPV (methylenedioxypyrovalerone), ethylphenidate, 2C-E (2,5-dimethoxy-4-ethylphenethylamine), bromo-dragonfly, and AH-7921 (3,4-dichloro-N-{[1-(dimethylamino)cyclohexyl]methyl}benzamide) were selected as representative NPS. Optimization of operational parameters was necessary as the NPS were novel to PALME, and because PALME was performed from whole blood for the very first time. In the PALME method developed for plasma, NPS were extracted from a 250μL alkalized donor solution consisting of 125μL plasma sample, 115μL 40mM NaOH, and 10μL internal standard. In the PALME method from whole blood, the 250μL alkalized donor solution consisted of 100μL whole blood, 50μL deionized water, 75μL 80mM NaOH, and 25μL internal standard. In both methods, extraction was accomplished across an SLM of 5μL dodecyl acetate with 1% trioctylamine (w/w), and further into an acidic acceptor solution of 50μL 20mM formic acid. The extraction was promoted by agitation at 900rpm and was carried out for 120min. Method validation was performed and the following parameters were considered: linearity, limits of quantification (LOQ), intra- and inter-day precision, accuracy, extraction recoveries, carry-over, and matrix effects. The validation results were in accordance with FDA guidelines.
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Affiliation(s)
- Linda Vårdal
- School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway
| | | | - Astrid Gjelstad
- School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway
| | - Elisabeth Leere Øiestad
- School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway; Norwegian Institute of Public Health (NIPH), Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway
| | - Hilde Marie Erøy Edvardsen
- Norwegian Institute of Public Health (NIPH), Department of Forensic Sciences, Oslo University Hospital, Oslo, Norway
| | - Stig Pedersen-Bjergaard
- School of Pharmacy, University of Oslo, P.O. Box 1068, Blindern, 0316 Oslo, Norway; Faculty of Health and Medical Sciences, School of Pharmaceutical Sciences, University of Copenhagen, Universitetsparken 2, 2100 Copenhagen, Denmark.
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11
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Ezquer-Garin C, Escuder-Gilabert L, Martín-Biosca Y, Lisart RF, Sagrado S, Medina-Hernández MJ. Fit-for-purpose chromatographic method for the determination of amikacin in human plasma for the dosage control of patients. Talanta 2015; 150:510-5. [PMID: 26838437 DOI: 10.1016/j.talanta.2015.12.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2015] [Revised: 12/16/2015] [Accepted: 12/20/2015] [Indexed: 11/25/2022]
Abstract
In this paper, a simple, rapid and sensitive method based on liquid chromatography with fluorimetric detection (HPLC-FLD) for the determination of amikacin (AMK) in human plasma is developed. Determination is performed by pre-column derivatization of AMK with ortho-phtalaldehyde (OPA) in presence of N-acetyl-L-cysteine (NAC) at pH 9.5 for 5 min at 80 °C. In our knowledge, this is the first time that NAC has been used in AMK derivatization. Derivatization conditions (pH, AMK/OPA/NAC molar ratios, temperature and reaction time) are optimized to obtain a single and stable, at room temperature, derivative. Separation of the derivative is achieved on a reversed phase LC column (Kromasil C18, 5 μm, 150 × 4.6 i.d. mm) with a mobile phase of 0.05 M phosphate buffer:acetonitrile (80:20, v/v) pumped at flow rate of 1.0 mL/min. Detection is performed using 337 and 439 nm for excitation and emission wavelengths, respectively. The method is fitted for the purpose of being a competitive alternative to the currently used method in many hospitals for AMK dosage control: fluorescence polarization immunoassay (FPIA). The method exhibits linearity in the 0.17-10 µg mL(-1) concentration range with a squared correlation coefficient higher than 0.995. Trueness and intermediate precision are estimated using spiked drug free plasma samples, which fulfill current UNE-EN ISO15189:2007 accreditation schemes. Finally, for the first time, statistical comparison against the FPIA method is demonstrated using plasma samples from 31 patients under treatment with AMK.
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Affiliation(s)
- C Ezquer-Garin
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain; Instituto de Investigación Sanitaria INCLIVA, Hospital Clínico Universitario, Valencia, Spain
| | - L Escuder-Gilabert
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain
| | - Y Martín-Biosca
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain
| | - R Ferriols Lisart
- Instituto de Investigación Sanitaria INCLIVA, Hospital Clínico Universitario, Valencia, Spain
| | - S Sagrado
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain; Centro Interuniversitario de Reconocimiento Molecular y Desarrollo Tecnológico (IDM), Unidad Mixta Universidad Politécnica de Valencia-Universidad de València, Valencia, Spain
| | - M J Medina-Hernández
- Departamento de Química Analítica, Universitat de València, Burjassot, Valencia, Spain.
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Domingues DS, Souza IDD, Queiroz MEC. Analysis of drugs in plasma samples from schizophrenic patients by column-switching liquid chromatography-tandem mass spectrometry with organic-inorganic hybrid cyanopropyl monolithic column. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 993-994:26-35. [PMID: 25984963 DOI: 10.1016/j.jchromb.2015.04.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 04/24/2015] [Accepted: 04/26/2015] [Indexed: 10/23/2022]
Abstract
This study reports on the development of a rapid, selective, and sensitive column-switching liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to analyze sixteen drugs (antidepressants, anticonvulsants, anxiolytics, and antipsychotics) in plasma samples from schizophrenic patients. The developed organic-inorganic hybrid monolithic column with cyanopropyl groups was used for the first dimension of the column-switching arrangement. This arrangement enabled online pre-concentration of the drugs (monolithic column) and their subsequent analytical separation on an XSelect SCH C18 column. The drugs were detected on a triple quadrupole tandem mass spectrometer (multiple reactions monitoring mode) with an electrospray ionization source in the positive ion mode. The developed method afforded adequate linearity for the sixteen target drugs; the coefficients of determination (R(2)) lay above 0.9932, the interassay precision had coefficients of variation lower than 6.5%, and the relative standard error values of the accuracy ranged from -14.0 to 11.8%. The lower limits of quantification in plasma samples ranged from 63 to 1250pgmL(-1). The developed method successfully analyzed the target drugs in plasma samples from schizophrenic patients for therapeutic drug monitoring (TDM).
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Affiliation(s)
- Diego Soares Domingues
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Brazil
| | - Israel Donizeti de Souza
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Brazil
| | - Maria Eugênia Costa Queiroz
- Departamento de Química, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Brazil.
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