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Yang H, Wurita A, Liu J, Wang Y, Hasegawa K. Quantitation of sibutramine in human hair using gas chromatography-isotope dilution tandem mass spectrometry. Forensic Toxicol 2022; 40:366-373. [PMID: 36454400 DOI: 10.1007/s11419-021-00609-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 11/20/2021] [Indexed: 01/26/2023]
Abstract
PURPOSE An analytical method for quantitation of sibutramine in human hair using gas chromatography (GC)-isotope dilution tandem mass spectrometry (MS/MS) was newly established. In this article, a case is presented, in which a 3.5-year-old male child accidentally ingested chocolate-like product containing sibutramine, showing various symptoms; he could survived the crisis. About 1 month after the incident, his scalp hair sample was subjected to analysis for the causative sibutramine. METHOD After cryo-grinding for the hair sample, target compound was extracted with methanol, and the solvent layer was evaporated to dryness. The residue was reconstituted in methanol and analyzed by GC-MS/MS, using the selected reaction monitoring (SRM) mode with a deuterated isotope internal standard. RESULTS The substance was identified as sibutramine; its concentration in the hair sample of the child was 58.6 pg/mg. The calibration curve of sibutramine in hair samples had a good linear relationship in the concentration range of 20-200 pg/mg (r > 0.99); the extraction recovery rate 85.2-91.8%; the interday and intraday precision and accuracy (bias) examined not greater than 9.6%. Sibutramine in human hair had good stability under 3 different storage conditions at room (20 °C), refrigerated (4 °C) and frozen ( - 20 °C) temperatures for at least 7 days. CONCLUSIONS It should be expected that the method established in this study would contribute to rapid determinations of sibutramine. To our knowledge, this is the first report describing quantitation of sibutramine in an authentic human hair sample by GC-MS/MS.
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Affiliation(s)
- Hongkun Yang
- Department of Legal Medicine, College of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, 010010, China
| | - Amin Wurita
- Department of Legal Medicine, College of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, 010010, China
| | - Jinlei Liu
- Department of Legal Medicine, College of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, 010010, China
| | - Yue Wang
- Department of Legal Medicine, College of Basic Medical Sciences, Inner Mongolia Medical University, Hohhot, 010010, China
| | - Koutaro Hasegawa
- Department of Legal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, 431-3192, Japan.
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2
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Sirivibulkovit K, Wilairat P, Nacapricha D, Wichit S, Saetear P. A simple cost-effective paper-based electrochemical device for detection of adulterated sibutramine in slimming products. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:2461-2470. [PMID: 35713109 DOI: 10.1039/d2ay00585a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
This work presents the first paper-based electrochemical device, or ePAD, for direct detection of adulterated sibutramine in slimming products. The ePAD was fabricated using a screen-printing technique for defining the hydrophilic area for sample loading and for the working, reference and counter electrodes. The ePAD gave reproducible responses comparable to both conventional rod electrodes and commercial screen-printed electrodes (SPEs). Use of paper to fabricate the ePAD device provides advantages over the conventional SPE platforms (e.g. glass, ceramics and polymers) in terms of biocompatibility, strong capillary action and environmental friendliness. To detect sibutramine, square wave voltammetry was employed after sample loading on the circular hydrophilic area. The linear range is 2.51 to 83.7 mg L-1 sibutramine, with a precision of 6 %RSD (n = 3) and an instrumental limit of detection (3SD of intercept/slope) of 2.46 mg L-1 sibutramine. Recovery of spiked samples ranged from 83 to 116%. The samples were capsules, slimming coffee powders and nutraceutical beverages. The samples were appropriately diluted to give concentrations within the linear calibration range. Filtration of undissolved solids found with the capsules and coffee powder samples was not required, demonstrating that the method is not susceptible to solid particles. The ePAD is cost-effective (<US$1 per device) and suitable for on-site analysis.
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Affiliation(s)
- Kitima Sirivibulkovit
- Flow Innovation-Research for Science and Technology Laboratories (FIRST labs), Thailand.
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama 6 Road, Ratchathewi, Bangkok, 10400, Thailand
| | - Prapin Wilairat
- Flow Innovation-Research for Science and Technology Laboratories (FIRST labs), Thailand.
- Analytical Sciences and National Doping Test Institute, Mahidol University, Rama 6 Road, Ratchathewi, Bangkok, 10400, Thailand
| | - Duangjai Nacapricha
- Flow Innovation-Research for Science and Technology Laboratories (FIRST labs), Thailand.
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama 6 Road, Ratchathewi, Bangkok, 10400, Thailand
| | - Sineewanlaya Wichit
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Nakhon Pathom, 73170, Thailand
| | - Phoonthawee Saetear
- Flow Innovation-Research for Science and Technology Laboratories (FIRST labs), Thailand.
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Mahidol University, Rama 6 Road, Ratchathewi, Bangkok, 10400, Thailand
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3
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Azad RK, Shulaev V. Metabolomics technology and bioinformatics for precision medicine. Brief Bioinform 2019; 20:1957-1971. [PMID: 29304189 PMCID: PMC6954408 DOI: 10.1093/bib/bbx170] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 11/29/2017] [Indexed: 12/14/2022] Open
Abstract
Precision medicine is rapidly emerging as a strategy to tailor medical treatment to a small group or even individual patients based on their genetics, environment and lifestyle. Precision medicine relies heavily on developments in systems biology and omics disciplines, including metabolomics. Combination of metabolomics with sophisticated bioinformatics analysis and mathematical modeling has an extreme power to provide a metabolic snapshot of the patient over the course of disease and treatment or classifying patients into subpopulations and subgroups requiring individual medical treatment. Although a powerful approach, metabolomics have certain limitations in technology and bioinformatics. We will review various aspects of metabolomics technology and bioinformatics, from data generation, bioinformatics analysis, data fusion and mathematical modeling to data management, in the context of precision medicine.
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Affiliation(s)
| | - Vladimir Shulaev
- Corresponding author: Vladimir Shulaev, Department of Biological Sciences, BioDiscovery Institute, University of North Texas, Denton, TX 76210, USA. Tel.: 940-369-5368; Fax: 940-565-3821; E-mail:
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Souza Anselmo C, Sardela VF, Matias BF, Carvalho AR, Sousa VP, Pereira HMG, Aquino Neto FR. Is zebrafish
(
Danio rerio
)
a tool for human‐like metabolism study? Drug Test Anal 2017; 9:1685-1694. [DOI: 10.1002/dta.2318] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/26/2017] [Accepted: 09/27/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Carina Souza Anselmo
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Vinicius Figueiredo Sardela
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Bernardo Fonseca Matias
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Amanda Reis Carvalho
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Valeria Pereira Sousa
- Federal University of Rio de Janeiro, Faculty of PharmacyDepartment of Drugs and Pharmaceutics Av. Carlos Chagas Filho, 373, bloco Bss, 36 ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐170 Brazil
| | - Henrique Marcelo Gualberto Pereira
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
| | - Francisco Radler Aquino Neto
- Federal University of Rio de Janeiro, Institute of Chemistry, LBCD – LADETEC Av. Horácio Macedo, 1281, bloco C ‐ Cidade Universitária, Rio de Janeiro ‐ RJ 21941‐598 Brazil
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5
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Hussain T, Shahzad MK, Hayat K, Hussain K, Bukhari NI. Simple and Sensitive Colorimetric Method for the Determination of Milnacipran in Bulk and Swellable Matrix Tablets. Pharm Chem J 2016. [DOI: 10.1007/s11094-016-1449-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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6
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Kim HJ, Lee JH, Park HJ, Cho SH, Cho S, Kim WS. Monitoring of 29 weight loss compounds in foods and dietary supplements by LC-MS/MS. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2014; 31:777-83. [DOI: 10.1080/19440049.2014.888497] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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7
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Goparaju SM, Nandula YSM, Bannoth Kothapalli C, Challa BR, Awen BZ. Method development and validation of Guanfacine in rat plasma by liquid chromatography-tandem mass spectrometry: Application to a pharmacokinetic study. J Pharm Anal 2013; 3:472-480. [PMID: 29403858 PMCID: PMC5760995 DOI: 10.1016/j.jpha.2013.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 04/27/2013] [Indexed: 11/25/2022] Open
Abstract
A selective, sensitive and high-throughput liquid chromatography–tandem mass spectrometry (LC–ESI-MS/MS) method has been developed and validated for the quantitation of Guanfacine in rat plasma. Sample clean-up involved liquid–liquid extraction (LLE) and 100 μL of rat plasma was used. YMC BASIC column (50 mm×2.0 mm, 3.5 µm) was used. Mobile phase used was 10 mM ammonium formate (pH 4.0):acetonitrile (70:30, v/v) at a flow rate of 0.3 mL/min. The parent→product ion transitions for the drug (m/z 246.0→159.0) and IS (m/z 252.0→161.1) were monitored on a triple quadrupole mass spectrometer, operating in the multiple reaction monitoring (MRM) and positive ion mode. The method was validated over the concentration range of 50.00–10,000.00 pg/mL for Guanfacine. The method was successfully applied into a pharmacokinetic study in rat plasma.
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Affiliation(s)
- Suryanarayana Murthy Goparaju
- Jawaharlal Nehru Technological University, Anantapur, Andhra Pradesh 522001, India.,Gokaraju Rangaraju Institute of Engineering & Technology, Hyderabad, 500072, India
| | | | | | - B R Challa
- Nirmala College of Pharmacy, Madras Road, Kadapa, Andhra Pradesh 516002, India
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8
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Kanala K, T Hwisa N, Chandu BR, Katakam P, Khagga M, Challa BR, Khagga B. Bioanalytical method development and validation of milnacipran in rat plasma by LC-MS/MS detection and its application to a pharmacokinetic study. J Pharm Anal 2013; 3:481-488. [PMID: 29403859 PMCID: PMC5761007 DOI: 10.1016/j.jpha.2013.03.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Accepted: 03/26/2013] [Indexed: 11/17/2022] Open
Abstract
A simple, sensitive and specific liquid chromatography–tandem mass spectrometry (LC–MS/MS) method was developed for the quantification of milnacipran (MC) in rat plasma by using the liquid–liquid extraction method. Milnacipran-d10 (MCD10) was used as an internal standard (IS). Chromatographic separation was achieved on Zorbax SB-CN (4.6 mm×75 mm, 3.5 µm) column with an isocratic mobile phase composed of 10 mM ammonium acetate (pH 4.0) and methanol in the ratio of 25:75(v/v), at a flow-rate of 0.7 mL/min. MC and MCD10 were detected with proton adducts at m/z 247.2→230.3 and m/z 257.2→240.4 in multiple reaction monitoring (MRM) positive mode respectively. The method was validated over a linear concentration range of 1.00–400.00 ng/mL with a correlation coefficient (r2)≥0.9850. This method demonstrated intra- and inter-day precision within 5.40–10.85% and 4.40–8.29% and accuracy within 97.00–104.20% and 101.64–106.23%. MC was found to be stable throughout three freeze–thaw cycles, bench top and postoperative stability studies. This method was successfully applied to a pharmacokinetic study of rats through i.v. administration.
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Affiliation(s)
- Kanchanamala Kanala
- Jawaharlal Nehru Technological University Anantapur, Andhrapradesh 515002, India.,Ratnam Institute of Pharmacy, Pidatapolur, Muthukur, Nellore, Andhrapradesh 524346, India
| | | | | | | | - Mukkanti Khagga
- Jawaharlal Nehru Technological University Hyderabad, Andhrapradesh 500072, India
| | - B R Challa
- Nirmala College of Pharmacy, Madras road, Kadapa, Andhrapradesh 516002, India
| | - Bhavyasri Khagga
- Center for Pharmaceutical Sciences Department, J. N. T. University, Kukatpally, Hyderabad, Andhra Pradesh 500072, India
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9
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A validated LC-MS/MS method for the determination of tolterodine and its metabolite in rat plasma and application to pharmacokinetic study. J Pharm Anal 2013; 3:489-499. [PMID: 29403860 PMCID: PMC5761003 DOI: 10.1016/j.jpha.2013.04.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 04/26/2013] [Indexed: 11/22/2022] Open
Abstract
Liquid chromatography–tandem mass spectrometry (LC–MS/MS) method was used for simultaneous quantification of tolterodine and its metabolite 5-hydroxy methyl tolterodine in rat plasma. Tolterodine-d6 and 5-hydroxy methyl tolterodine-d14 were used as internal standards (IS). Chromatographic separation was performed on Ascentis Express RP amide (50 mm×4.6 mm, 2.7 μm) column with an isocratic mobile phase composed of 10 mM ammonium acetate and acetonitrile in the ratio of 20:80 (v/v), at a flow-rate of 0.5 mL/min. Tolterodine, tolterodine-d6, 5-hydroxy methyl tolterodine and 5-hydroxy methyl tolterodine-d14 were detected with proton adducts at m/z 326.1→147.1, 332.3→153.1, 342.2→223.1 and 356.2→223.1 in multiple reaction monitoring (MRM) positive mode respectively. The drug, metabolite and internal standards were extracted by liquid–liquid extraction method. The method was validated over a linear concentration range of 20.00–5000.00 pg/mL for tolterodine and 20.00–5000.00 pg/mL for 5-hydroxy methyl tolterodine. This method demonstrated intra- and inter-day precision of 0.62–6.36% and 1.73–4.84% for tolterodine, 1.38–4.22% and 1.62–4.25% for 5-hydroxy methyl tolterodine respectively. This method also demonstrated intra- and inter-day accuracy of 98.75–103.56% and 99.20–104.40% for tolterodine, 98.08–104.67% and 98.73–103.06% for 5-hydroxy methyl tolterodine respectively. Both analytes were found to be stable throughout freeze–thaw cycles, bench top and postoperative stability studies. This method was successfully applied for the pharmacokinetic analysis of rat plasma samples following i.v. administration.
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10
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Simultaneous pharmacokinetic assessment of cefadroxil and clavulanic acid in human plasma by LC-MS and its application to bioequivalence studies. J Pharm Anal 2013; 3:285-291. [PMID: 29403829 PMCID: PMC5760965 DOI: 10.1016/j.jpha.2013.02.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2012] [Accepted: 02/04/2013] [Indexed: 11/20/2022] Open
Abstract
A simple, rapid and selective liquid chromatography–atmospheric pressure chemical ionization–mass spectrometry (LC–APCI–MS) assay method has been developed and fully validated for the simultaneous quantification of cefadroxil (CF) and clavulanic acid (CA) in human plasma. Analytes and internal standard (IS) were extracted from human plasma by solid-phase extraction (SPE) technique using Sam prep (3 mL, 100 mg) extraction cartridge. The extracted samples were chromatographed on a reverse phase C18 column using a mixture of methanol: acetonitrile: 2 mM ammonium acetate (pH 3.5) (25:25:50, v/v/v) as the mobile phase at a flow rate of 0.8 mL/min. Quantification of the analytes and IS were carried out using single quadrupole LC–APCI–MS through selected-ion monitoring (SIM) at m/z 362 and m/z 198, for CF and CA, respectively. Method validation was performed as per the FDA guidelines and the results met the acceptance criteria. Plasma concentration of CF and CA followed by the oral administration of CF/CA (500/125 mg) pill to healthy male volunteers (n=12) was measured. Area under plasma concentration–time curve from 0 to 12 h (AUC0–12 h) and 0 h extrapolated to infinity (AUC0−∞) were calculated. The ratio of AUC0–12 h/AUC0−∞ was found to be >85% for all the subjects, as recommended by the FDA guidelines.
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11
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Gajula R, Maddela R, Babu Ravi V, Inamadugu JK, Pilli NR. A rapid and sensitive liquid chromatography-tandem mass spectrometric assay for duloxetine in human plasma: Its pharmacokinetic application. J Pharm Anal 2013; 3:36-44. [PMID: 29403794 PMCID: PMC5760945 DOI: 10.1016/j.jpha.2012.09.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 09/18/2012] [Indexed: 11/08/2022] Open
Abstract
This paper describes a simple, rapid and sensitive liquid chromatography–tandem mass spectrometry assay for the determination of duloxetine in human plasma. A duloxetine stable labeled isotope (duloxetine d5) was used as an internal standard. Analyte and the internal standard were extracted from 100 μL of human plasma via solid phase extraction technique using Oasis HLB cartridges. The chromatographic separation was achieved on a C18 column by using a mixture of acetonitrile–5 mM ammonium acetate buffer (83:17, v/v) as the mobile phase at a flow rate of 0.9 mL/min. The calibration curve obtained was linear (r2≥0.99) over the concentration range of 0.05–101 ng/mL. Multiple-reaction monitoring mode (MRM) was used for quantification of ion transitions at m/z 298.3/154.1 and 303.3/159.1 for the drug and the internal standard, respectively. Method validation was performed as per FDA guidelines and the results met the acceptance criteria. A run time of 2.5 min for each sample made it possible to analyze more than 300 plasma samples per day. The proposed method was found to be applicable to clinical studies.
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Affiliation(s)
- Ramakrishna Gajula
- Wellquest Clinical Research Laboratories, Ramanthapur, Hyderabad 500013, India
| | - Rambabu Maddela
- Wellquest Clinical Research Laboratories, Ramanthapur, Hyderabad 500013, India
| | - Vasu Babu Ravi
- Wellquest Clinical Research Laboratories, Ramanthapur, Hyderabad 500013, India
| | | | - Nageswara Rao Pilli
- Wellquest Clinical Research Laboratories, Ramanthapur, Hyderabad 500013, India
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12
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Derangula VR, Pilli NR, Nadavala SK, Adireddy V, Inamadugu JK, Ponneri V. Liquid chromatography-tandem mass spectrometric assay for the determination of tetrabenazine and its active metabolites in human plasma: a pharmacokinetic study. Biomed Chromatogr 2013; 27:792-801. [PMID: 23339053 DOI: 10.1002/bmc.2862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Revised: 12/03/2012] [Accepted: 12/03/2012] [Indexed: 01/20/2023]
Abstract
A simple, rapid and sensitive liquid chromatography-tandem mass spectrometric (LC-MS/MS) assay method has been developed and fully validated for the simultaneous quantification of tetrabenazine and its active metabolites α-dihydrotetrabenazine and β-dihydrotetrabenazine in human plasma. Tetrabenazine d7 was used as internal standard (IS). The analytes were extracted from 200 μL aliquots of human plasma via solid-phase extraction using C18 solid-phase extraction cartridges. The reconstituted samples were chromatographed on a Zorbax SB C18 column using a 60:40 (v/v) mixture of acetonitrile and 5 mm ammonium acetate as the mobile phase at a flow rate of 0.8 mL/min. The API-4000 LC-MS/MS in multiple reaction-monitoring mode was used for detection. The calibration curves obtained were linear (r(2) ≥ 0.99) over the concentration range of 0.01-5.03 ng/mL for tetrabenazine and 0.50-100 ng/mL for α-dihydrotetrabenazine and β-dihydrotetrabenazine. Method validation was performed as per Food and Drug Administration guidelines and the results met the acceptance criteria. The method is precise and sensitive enough for its intended purpose. A run time of 2.5 min for each sample made it possible to analyze more than 300 plasma samples per day. The proposed method was found to be applicable to clinical studies.
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Chhonker YS, Kumar D, Shrivastava P, Kumar D, Singh R, Chandasana H, Bhatta RS. LC-MS/MS assay for the determination of natamycin in rabbit and human plasma: Application to a pharmacokinetics and protein binding study. J Pharm Anal 2012; 3:144-148. [PMID: 29403809 PMCID: PMC5760952 DOI: 10.1016/j.jpha.2012.11.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 11/22/2012] [Indexed: 11/22/2022] Open
Abstract
To enable reliable quantification of natamycin in rabbit and human plasma, a validated, sensitive and selective liquid chromatography–tandem mass spectrometry assay was developed. The chromatographic separation was achieved isocratically on a Cyano column using methanol: aqueous 3.5 mM ammonium acetate (pH 4) (90:10 v/v). The assay was validated over a concentration range of 6.25–400 ng/mL with lower limit of detection of 3.12 ng/mL. Quantification was performed using the transitions 664.5→137.2m/z for natamycin and 923.5→183.4m/z for the IS. The method was validated with respect to linearity, accuracy, precision, recovery and stability. This assay has been successfully applied to a pharmacokinetic study of natamycin in NZ rabbit and plasma protein binding in human plasma.
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Affiliation(s)
- Yashpal Singh Chhonker
- CSIR-Central Drug Research Institute, Pharmacokinetics and Metabolism Division, Lucknow, UP 226001, India
| | - Devendra Kumar
- CSIR-Central Drug Research Institute, Pharmacokinetics and Metabolism Division, Lucknow, UP 226001, India
| | - Pankaj Shrivastava
- CSIR-Central Drug Research Institute, Pharmacokinetics and Metabolism Division, Lucknow, UP 226001, India
| | - Deepak Kumar
- CSIR-Central Drug Research Institute, Pharmacokinetics and Metabolism Division, Lucknow, UP 226001, India
| | - Rajbir Singh
- CSIR-Central Drug Research Institute, Pharmacokinetics and Metabolism Division, Lucknow, UP 226001, India
| | - Hardik Chandasana
- CSIR-Central Drug Research Institute, Pharmacokinetics and Metabolism Division, Lucknow, UP 226001, India
| | - Rabi Sankar Bhatta
- CSIR-Central Drug Research Institute, Pharmacokinetics and Metabolism Division, Lucknow, UP 226001, India
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