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Vollmer AC, Wagmann L, Weber AA, Meyer MR. Simultaneous analysis of antihyperglycemic small molecule drugs and peptide drugs by means of dual liquid chromatography high-resolution mass spectrometry. Clin Chem Lab Med 2023; 61:1300-1308. [PMID: 37011023 DOI: 10.1515/cclm-2022-1316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 03/20/2023] [Indexed: 04/04/2023]
Abstract
OBJECTIVES The study aimed to evaluate dual liquid chromatography (LC) coupled to high-resolution mass spectrometry (HRMS) for the simultaneous analysis of small and large molecule drugs by development and application of a validated bioanalytical method. METHODS The oral antihyperglycemic drugs (OAD) dapagliflozin, empagliflozin, glibenclamide, glimepiride, metformin, pioglitazone, repaglinide, saxagliptin, sitagliptin, and vildagliptin, as well as the antihyperglycemic peptides exenatide, human insulin, insulin aspart, insulin degludec, insulin detemir, insulin glargine, insulin glulisine, insulin lispro, and semaglutide were included in the analytical procedure. Analytes were extracted using a combination of protein precipitation and solid-phase extraction. Two identical reversed-phase columns were used for separation followed by Orbitrap high-resolution mass spectrometry. The whole procedure was validated according to international recommendations. RESULTS Different MS parameters had to be used for the two analyte groups, but dual LC separation allowed elution of all analytes within 12 min using the same column type. The analytical procedure was accurate and precise for most of the compounds except for exenatide, semaglutide, and insulin glargine, which were included qualitatively in the method. Analysis of proof-of-concept samples revealed OAD concentrations mostly within their therapeutic range, insulins could be detected in five cases but at concentrations below the lower limit of quantification except for one case. CONCLUSIONS Dual LC in combination with HRMS was shown to be a suitable platform to analyze small and large molecules in parallel and the current method allowed the determination of a total of 19 antihyperglycemic drugs in blood plasma within 12 min.
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Affiliation(s)
- Aline C Vollmer
- Department of Experimental and Clinical Toxicology, Institute of Experimental and Clinical Pharmacology and Toxicology, Center for Molecular Signaling (PZMS), Saarland University, Homburg, Germany
| | - Lea Wagmann
- Department of Experimental and Clinical Toxicology, Institute of Experimental and Clinical Pharmacology and Toxicology, Center for Molecular Signaling (PZMS), Saarland University, Homburg, Germany
| | - Armin A Weber
- Department of Experimental and Clinical Toxicology, Institute of Experimental and Clinical Pharmacology and Toxicology, Center for Molecular Signaling (PZMS), Saarland University, Homburg, Germany
| | - Markus R Meyer
- Department of Experimental and Clinical Toxicology, Institute of Experimental and Clinical Pharmacology and Toxicology, Center for Molecular Signaling (PZMS), Saarland University, Homburg, Germany
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Latif R, Makar RR, Hosni EA, El Gazayerly ON. The potential of intranasal delivery of nanocrystals in powder form on the improvement of zaleplon performance: in-vitro, in-vivo assessment. Drug Dev Ind Pharm 2021; 47:268-279. [PMID: 33501862 DOI: 10.1080/03639045.2021.1879834] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVE The present work focuses on improving zaleplon (ZAP) performance through nanosizing its insoluble particles which were then delivered intranasally in powder form. SIGNIFICANCE Since nanopowders have an exceptional ability to cross cell membrane, their absorption is facilitated in the solid form. Hence, delivering insoluble ZAP nanocrystals (NC) through intranasal route improves its bioavailability due to both nanosization and the escape of hepatic metabolism. METHODS Nanocrystals were prepared by anti-solvent precipitation followed by probe sonication in presence of Soluplus®, Poloxamer-188 (0.25%), sodium lauryl sulfate (0.5%), and mannitol. Physicochemical evaluation of the prepared NC was done by DSC and XRPD. TGA was performed for stability detection. Ex vivo permeation study through isolated cattle nasal mucosal membrane, in addition to an in vivo bioavailability study was performed for assessment of the prepared NC. RESULTS Nanosization to 200 nm contributed to the enhancement in dissolution ∼100% within 30 min and reduced half-life to 1.63 min. Confirmation of adsorption of polymers over NC' surface was elucidated. TGA confirmed their thermal stability. Ex vivo permeation study showed a 2.7 enhancement ratio in favor of the prepared NC. Both the extent and rate of NC absorption through nasal mucosa of rabbits were significantly higher (p ˂ .05) than in case of oral tablets. The relative bioavailability of NC was increased 3.14 times as compared to the Sleep aid® tablets. CONCLUSION The intranasal delivery of nanoscale ZAP powder proved to be a successful alternative to oral formulations that suffer poor absorption and limited bioavailability.
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Affiliation(s)
- Randa Latif
- Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Rana R Makar
- Faculty of Pharmacy, Ahram Canadian University, Cairo, Egypt
| | - Ehab A Hosni
- Faculty of Pharmacy, Al-Kut University, Wasit, Iraq
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Latif R, Makar RR, Hosni EA, El Gazayerly ON. The impact of bioceramic nanocarriers on the intranasal delivery of zaleplon nanoscale powder through new adsorption techniques: Improvement in bioavailability and hypnotic effect. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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4
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El-ghobashy MR, Yehia AM, Helmy AH, Youssef NF. Forced degradation of gliquidone and development of validated stability-indicating HPLC and TLC methods. BRAZ J PHARM SCI 2018. [DOI: 10.1590/s2175-97902018000317223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Farag MM, Abd El Malak NS, Yehia SA. Zaleplon loaded bi-layered chronopatch: A novel buccal chronodelivery approach to overcome circadian rhythm related sleep disorder. Int J Pharm 2018. [PMID: 29526622 DOI: 10.1016/j.ijpharm.2018.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The aim of this study was to develop a novel buccal bi-layered chronopatch capable of eliciting pulsatile release pattern of drugs treating diseases with circadian rhythm related manifestation. Zaleplon (ZLP) was used as a model drug intended to induce sleep and to treat middle of night insomnia. The chronopatch was prepared adopting double casting technique. The first layer was composed of a controlled release patch containing ZLP-Precirol melt granules intended to release ZLP in a sustained manner to maintain sleep and to prevent early morning awakening. The second layer was composed of a fast release lyophilized buccal disc containing ZLP loaded SNEDDS (Z-SNEDDS) intended for rapid sleep induction. Pharmacokinetic parameters of ZLP from the chronopatch were compared to those of the immediate release capsule, Siesta®, as reference in Mongrel dogs using a randomized crossover design. The appearance of two peaks having two Cmax and Tmax proved the pulsatile release pattern. The increase in relative bioavailability of ZLP from the chronopatch was 2.63 folds. The results revealed the ability of the developed ZLP loaded bi-layered chronopatch to be a candidate for overcoming early morning awakening without middle of night dose administration.
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Affiliation(s)
- Michael M Farag
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Egypt.
| | - Nevine S Abd El Malak
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Egypt
| | - Soad A Yehia
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Egypt
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El-Ghobashy MR, Yehia AM, Helmy AH, Youssef NF. Application of normal fluorescence and stability-indicating derivative synchronous fluorescence spectroscopy for the determination of gliquidone in presence of its fluorescent alkaline degradation product. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 188:619-625. [PMID: 28780487 DOI: 10.1016/j.saa.2017.07.052] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 07/19/2017] [Accepted: 07/28/2017] [Indexed: 06/07/2023]
Abstract
Simple, smart and sensitive normal fluorescence and stability-indicating derivative synchronous spectrofluorimetric methods have been developed and validated for the determination of gliquidone in the drug substance and drug product. Normal spectrofluorimetric method of gliquidone was established in methanol at λ excitation 225nm and λ emission 400nm in concentration range 0.2-3μg/ml with LOD equal 0.028. The fluorescence quantum yield of gliquidone was calculated using quinine sulfate as a reference and found to be 0.542. Stability-indicating first and third derivative synchronous fluorescence spectroscopy were successfully utilized to overcome the overlapped spectra in normal fluorescence of gliquidone and its alkaline degradation product. Derivative synchronous methods are based on using the synchronous fluorescence of gliquidone and its degradation product in methanol at Δ λ50nm. Peak amplitude in the first derivative of synchronous fluorescence spectra was measured at 309nm where degradation product showed zero-crossing without interference. The peak amplitudes in the third derivative of synchronous fluorescence spectra, peak to trough were measured at 316,329nm where degradation product showed zero-crossing. The different experimental parameters affecting the normal and synchronous fluorescence intensity of gliquidone were studied and optimized. Moreover, the cited methods have been validated as per ICH guidelines. The peak amplitude-concentration plots of the derivative synchronous fluorescence were linear over the concentration range 0.05-2μg/ml for gliquidone. Limits of detection were 0.020 and 0.022 in first and third derivative synchronous spectra, respectively. The adopted methods were successfully applied to commercial tablets and the results demonstrated that the derivative synchronous fluorescence spectroscopy is a powerful stability-indicating method, suitable for routine use with a short analysis time. Statistical comparison between the results obtained by normal fluorescence and derivative synchronous methods and the official one using student's t-test and F-ratio showed no significant difference regarding accuracy and precision.
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Affiliation(s)
- Mohamed R El-Ghobashy
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Ali M Yehia
- Analytical Chemistry Department, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Aya H Helmy
- Pharmaceutical Chemistry Department, National Organization for Drug Control and Research (NODCAR), Giza, Egypt.
| | - Nadia F Youssef
- Pharmaceutical Chemistry Department, National Organization for Drug Control and Research (NODCAR), Giza, Egypt
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Abstract
Type 2 diabetes mellitus, a disease which prevalence has been progressively increasing worldwide, is characterized by chronic hyperglycemia resulting from the combination of inappropriate insulin secretion and/or resistance to insulin action. If left uncontrolled, diabetes is associated with complications such as dysfunction and failure of various organs, and even premature death. Along with lifestyle-modification strategies, several classes of oral antidiabetic agents can be employed for glycemic control. Thus, therapeutic drug monitoring of these drugs is essential to maintain appropriate treatment. This review discusses the most frequently employed analytical techniques and sample preparation systems to obtain a reliable and trustworthy method to quantify antidiabetic drugs in biological matrices. An adequate choice of internal standard, ideal chromatography conditions and most suitable analytical detector are reported.
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Fachi MM, Leonart LP, Cerqueira LB, Pontes FLD, de Campos ML, Pontarolo R. A systematic and critical review on bioanalytical method validation using the example of simultaneous quantitation of antidiabetic agents in blood. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1055-1056:61-71. [DOI: 10.1016/j.jchromb.2017.04.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 02/13/2017] [Accepted: 04/12/2017] [Indexed: 12/18/2022]
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Fachi MM, Cerqueira LB, Leonart LP, de Francisco TMG, Pontarolo R. Simultaneous Quantification of Antidiabetic Agents in Human Plasma by a UPLC-QToF-MS Method. PLoS One 2016; 11:e0167107. [PMID: 27930700 PMCID: PMC5145167 DOI: 10.1371/journal.pone.0167107] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 11/07/2016] [Indexed: 11/30/2022] Open
Abstract
An ultra-performance liquid chromatography quadrupole time-of-flight mass spectrometry method for the simultaneous quantification of chlorpropamide, glibenclamide, gliclazide, glimepiride, metformin, nateglinide, pioglitazone, rosiglitazone, and vildagliptin in human plasma was developed and validated, using isoniazid and sulfaquinoxaline as internal standards. Following plasma protein precipitation using acetonitrile with 1% formic acid, chromatographic separation was performed on a cyano column using gradient elution with water and acetonitrile, both containing 0.1% formic acid. Detection was performed in a quadrupole time-of-flight analyzer, using electrospray ionization operated in the positive mode. Data from validation studies demonstrated that the new method is highly sensitive, selective, precise (RSD < 10%), accurate (RE < 12%), linear (r > 0.99), free of matrix and has no residual effects. The developed method was successfully applied to volunteers' plasma samples. Hence, this method was demonstrated to be appropriate for clinical monitoring of antidiabetic agents.
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Affiliation(s)
| | | | | | | | - Roberto Pontarolo
- Department of Pharmacy, Federal University of Paraná, Curitiba – Paraná, Brazil
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Chemometric optimization and validation of a novel dispersive liquid–liquid microextraction–HPLC method for gliclazide, glibenclamide and glimepiride quantitation in serum samples. Microchem J 2016. [DOI: 10.1016/j.microc.2016.02.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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Development and validation of an LC–MS/MS sulfonylurea assay for hypoglycemia cases in the emergency department. Clin Chim Acta 2016; 454:130-4. [DOI: 10.1016/j.cca.2016.01.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 01/07/2016] [Accepted: 01/07/2016] [Indexed: 11/16/2022]
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Solving signal instability to maintain the second-order advantage in the resolution and determination of multi-analytes in complex systems by modeling liquid chromatography-mass spectrometry data using alternating trilinear decomposition method assisted with piecewise direct standardization. J Chromatogr A 2015; 1407:157-68. [PMID: 26141270 DOI: 10.1016/j.chroma.2015.06.049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 06/15/2015] [Accepted: 06/15/2015] [Indexed: 11/22/2022]
Abstract
The application of calibration transfer methods has been successful in combination with near-infrared spectroscopy or other tools for prediction of chemical composition. One of the developed methods that can provide accurate performances is the piecewise direct standardization (PDS) method, which in this paper is firstly applied to transfer from one day to another the second-order calibration model based on alternating trilinear decomposition (ATLD) method built for the interference-free resolution and determination of multi-analytes in complex systems by liquid chromatography-mass spectrometry (LC-MS) in full scan mode. This is an example of LC-MS analysis in which interferences have been found, making necessary the use of second-order calibration because of its capacity for modeling this phenomenon, which implies analytes of interest can be resolved and quantified even in the presence of overlapped peaks and unknown interferences. Once the second-order calibration model based on ATLD method was built, the calibration transfer was conducted to compensate for the signal instability of LC-MS instrument over time. This allows one to reduce the volume of the heavy works for complete recalibration which is necessary for later accurate determinations. The root-mean-square error of prediction (RMSEP) and average recovery were used to evaluate the performances of the proposed strategy. Results showed that the number of calibration samples used on the real LC-MS data was reduced by using the PDS method from 11 to 3 while producing comparable RMSEP values and recovery values that were statistically the same (F-test, 95% confidence level) to those obtained with 11 calibration samples. This methodology is in accordance with the highly recommended green analytical chemistry principles, since it can reduce the experimental efforts and cost with regard to the use of a new calibration model built in modified conditions.
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Ali I, Hussain I, Sanagi MM, Ibrahim WAW, Aboul-Enein HY. Analyses of Biguanides and Related Compounds in Biological and Environmental Samples by HPLC. J LIQ CHROMATOGR R T 2014. [DOI: 10.1080/10826076.2014.940803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Imran Ali
- a Department of Chemistry , Jamia Millia Islamia (Central University) , New Delhi , India
| | - Iqbal Hussain
- b Department of Chemistry, Faculty of Science , Universiti Teknologi Malaysia , Johor Bahru , Johor , Malaysia
- c Ibnu Sina Institute for Fundamental Science Studies, Nanotechnology Reseach Alliance , Universiti Teknologi Malaysia , Johor Bahru , Johor , Malaysia
| | - Mohd Marsin Sanagi
- b Department of Chemistry, Faculty of Science , Universiti Teknologi Malaysia , Johor Bahru , Johor , Malaysia
- c Ibnu Sina Institute for Fundamental Science Studies, Nanotechnology Reseach Alliance , Universiti Teknologi Malaysia , Johor Bahru , Johor , Malaysia
| | - Wan Aini Wan Ibrahim
- b Department of Chemistry, Faculty of Science , Universiti Teknologi Malaysia , Johor Bahru , Johor , Malaysia
- c Ibnu Sina Institute for Fundamental Science Studies, Nanotechnology Reseach Alliance , Universiti Teknologi Malaysia , Johor Bahru , Johor , Malaysia
| | - Hassan Y. Aboul-Enein
- d Department of Pharmaceutical and Medicinal Chemistry , Pharmaceutical and Drug Industries Research Division, National Research Centre , Dokki , Cairo , Egypt
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Guo C, Shi F, Jiang S, Gong L, Zhao Y, Zhang J, Zeng S. Simultaneous identification, confirmation and quantitation of illegal adulterated antidiabetics in herbal medicines and dietary supplements using high-resolution benchtop quadrupole-Orbitrap mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 967:174-82. [PMID: 25108366 DOI: 10.1016/j.jchromb.2014.07.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 07/15/2014] [Accepted: 07/20/2014] [Indexed: 11/25/2022]
Abstract
This paper presents an application of ultrahigh-performance liquid chromatography and quadrupole Orbitrap high-resolution mass spectrometry (UHPLC-Q-Orbitrap HR MS) for the screening, confirmation and quantification of 11 antidiabetics in herbal medicines and dietary supplements. The mass spectrometer was operated in Full MS/dd-MS(2) (data-dependent MS(2)) mode. The full MS scan acquired data for identification and quantification, and dd-MS(2) scan obtained product ion spectra for confirmation. UHPLC-Q-Orbitrap MS quantification was achieved using matrix-matched standard calibration curves with phenacetin as internal standard. The method validation that included selectivity, sensitivity, calibration curve, accuracy and precision, recovery, matrix effect and stability was evaluated. The response showed good linear relationship with the concentrations of analytes over wide ranges (e.g., 0.0004-1 μg/g for metformin) with all the coefficients of correlation (r(2)) >0.9991. The detection limits (LODs) were in the range of 0.05-0.5 ng/g for different analytes. The recoveries yielded results higher than 74.3% for all compounds. The accuracy was in the range of -6.75 to 3.85%, while the intra- and inter-day precision ranged from 0.048 to 11.5%. Among 63 batches of herbal medicines and 34 batches of dietary supplements samples, 7 batches of dietary supplements were positive, while all the herbal medicines were negative. Overall, the novel UHPLC-Q-Orbitrap has demonstrated great performance for identification, confirmation and quantification of antidiabetics in herbal medicines and dietary supplements, ensuring food safety and public health.
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Affiliation(s)
- Changchuan Guo
- Shandong Institute for Food and Drug Control, Jinan, Shandong 250101, PR China
| | - Feng Shi
- Shandong Institute for Food and Drug Control, Jinan, Shandong 250101, PR China.
| | - Shuyin Jiang
- Shandong Institute for Food and Drug Control, Jinan, Shandong 250101, PR China
| | - Liping Gong
- Shandong Institute for Food and Drug Control, Jinan, Shandong 250101, PR China
| | - Yanxia Zhao
- Shandong Institute for Food and Drug Control, Jinan, Shandong 250101, PR China
| | - Jinling Zhang
- Cancer Center, Linyi's People Hospital, Linyi, Shandong 276000, PR China.
| | - Su Zeng
- Lab of Pharmaceutical Analysis and Drug Metabolism, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, PR China
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Quantification of 33 antidepressants by LC-MS/MS--comparative validation in whole blood, plasma, and serum. Anal Bioanal Chem 2014; 406:5939-53. [PMID: 25023973 DOI: 10.1007/s00216-014-8019-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 07/01/2014] [Accepted: 07/02/2014] [Indexed: 01/25/2023]
Abstract
In the present study, a liquid chromatography-mass spectrometry (LC-MS/MS) multi-analyte approach based on a simple liquid-liquid extraction was developed for fast target screening and quantification of 33 antidepressants in whole blood, plasma, and serum. The method was validated with respect to selectivity, matrix effects, recovery, process efficiency, accuracy and precision, stabilities, and limits. In addition, cross-calibration between the three biosamples was done to assess the impact of the different matrices on the calibration. Whole blood, plasma, and serum (500 μL each) were extracted twice at pH 7.4 and at pH 10 with ether-ethyl acetate (1:1). Separation, detection, and quantification were performed using LC-MS/MS with electrospray ionization in positive mode. For accuracy and precision, full calibration was performed with ranges from subtherapeutic to toxic concentrations. The approach was sensitive and selective for 33 analytes in whole blood and 31 analytes in plasma and serum and accurate and precise for 30 of the 33 tested drugs in whole blood, 31 in plasma, and 28 in serum. Cross-calibration was successful only for 13 analytes in whole blood and 16 analytes in serum calculated over a calibration curve made in plasma, 12 analytes in whole blood and 15 analytes in plasma calculated over a calibration curve made in serum, and 10 analytes in plasma and 15 analytes in serum calculated over a calibration curve made in whole blood.
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Ezzeldin E, Abo-Talib NF, Tammam MH, Shahat AA. Development and validation of LC/MS/MS method for the simultaneous determination of montelukast, gliclazide, and nifedipine and its application to a pharmacokinetic study. Chem Cent J 2014; 8:17. [PMID: 24618480 PMCID: PMC3984717 DOI: 10.1186/1752-153x-8-17] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2013] [Accepted: 03/04/2014] [Indexed: 11/30/2022] Open
Abstract
Background Montelukast is a leukotriene receptor antagonist for treatment of asthma, gliclazide is an oral hypoglycemic antidiabetic agent, and nifedipine is a calcium channel blocker used for treatment of angina pectoris and hypertension. These drugs may be prescribed to patients suffering from these chronic diseases. A survey of the literature reveals that there is no reported method for the simultaneous determination of montelukast, gliclazide, and nifedipine in pharmaceutical preparations or biological fluids. Results A simple, sensitive, and rapid method for the simultaneous quantification of montelukast, gliclazide, and nifedipine in human plasma was developed and validated. Montelukast, gliclazide, and nifedipine were resolved using rapid resolution LC/MS/MS Agilent system and SB-C18 (50 × 4.6 mm) 1.8 μm particle size column. The mobile phase consisted of acetonitrile: 0.1% formic acid (84:16). The three drugs were simultaneously extracted from plasma by protein precipitation with acetonitrile using zaferolukast as an internal standard. The method was validated according to FDA guidelines with good reproducibility and linearity of 0.999 and the limits of quantification were 0.11, 0.04, and 0.07 ng/mL for montelukast, gliclazide, and nifedipine, respectively. The accuracies of the three QCs for the three drugs were 99.48% (montelukast), 106.53% (gliclazide), and 108.03% (nifedipine) in human plasma. The validated method was applied to a pharmacokinetic study in human volunteers after oral administration of the three drugs. The applied LC/MS/MS method was shown to be sufficiently sensitive and suitable for pharmacokinetic studies. Conclusion The LC/MS/MS method was validated and successfully applied for the determination of montelukast, gliclazide, and nifedipine concentrations in human plasma.
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Affiliation(s)
- Essam Ezzeldin
- Drug Bioavailability Lab,College of Pharmacy, King Saud University, P,O, Box 2457, Riyadh 11451, Saudi Arabia.
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Detection and quantification of benzodiazepines and Z-drugs in human whole blood, plasma, and serum samples as part of a comprehensive multi-analyte LC-MS/MS approach. Anal Bioanal Chem 2013; 406:803-18. [DOI: 10.1007/s00216-013-7513-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 10/17/2013] [Accepted: 11/14/2013] [Indexed: 10/25/2022]
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Meyer GMJ, Weber AA, Maurer HH. Development and validation of a fast and simple multi-analyte procedure for quantification of 40 drugs relevant to emergency toxicology using GC-MS and one-point calibration. Drug Test Anal 2013; 6:472-81. [DOI: 10.1002/dta.1555] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 08/27/2013] [Accepted: 08/27/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Golo M. J. Meyer
- Department of Experimental and Clinical Toxicology; Institute of Experimental and Clinical, Pharmacology and Toxicology, Saarland University; D-66421; Homburg (Saar); Germany
| | - Armin A. Weber
- Department of Experimental and Clinical Toxicology; Institute of Experimental and Clinical, Pharmacology and Toxicology, Saarland University; D-66421; Homburg (Saar); Germany
| | - Hans H. Maurer
- Department of Experimental and Clinical Toxicology; Institute of Experimental and Clinical, Pharmacology and Toxicology, Saarland University; D-66421; Homburg (Saar); Germany
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Abro K, Memon N, Bhanger MI, Perveen S, Panhwar A. Comparative Study of Electrospray and Atmospheric Pressure Chemical Ionization with Liquid Chromatography–Mass Spectrometry for Quantification of Five Antihyperglycemic Agents Utilizing Monolithic Column. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.680054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Binz TM, Villani N, Neels H, Schneider S. Rapid extraction, identification and quantification of oral hypoglycaemic drugs in serum and hair using LC-MS/MS. Forensic Sci Int 2012; 223:119-24. [PMID: 22940189 DOI: 10.1016/j.forsciint.2012.08.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2012] [Revised: 08/07/2012] [Accepted: 08/10/2012] [Indexed: 12/30/2022]
Abstract
A sensitive and accurate LC-MS/MS method for the identification and quantification of 5 oral anti-diabetics (glipizide, glibenclamide, gliclazide, gliquidone and metformin) in serum and hair was developed using glibornuride as the internal standard. We have developed a rapid and robust extraction procedure by using acetonitrile for serum protein precipitation and methanol for the extraction of anti-diabetics from hair. Anti-diabetics (ADs) were separated by UPLC over a C18 column and detection was performed on a Waters Xevo TQ MS mass spectrometer in positive ionization mode using electrospray ionization. Each AD was identified by three specific ion transitions in multiple reaction monitoring (MRM) mode. The method was validated according to international guidelines. For all compounds the variation coefficient (CV) was <20%, and accuracies ranged from 85 to 115% in serum and hair. The limits of detection (LODs) were <1.5 ng/mL for all ADs in serum and <3.59 pg/mg in hair. Recoveries varied from 56.41% (gliclazide) to 67.58% (glipizide) in serum and from 68% (gliclazide) to 91.2% (metformin) in hair. The method was successfully applied to quantify ADs in serum of 33 patients and in hair of 15 patients.
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Affiliation(s)
- Tina M Binz
- Laboratoire National de Santé, Toxicology Department, Avenue de la Faïencerie 162a, L-1511, Luxembourg
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Bonfilio R, Pires SA, Ferreira LM, de Almeida AE, Doriguetto AC, de Araújo MB, Salgado HR. A Discriminating Dissolution Method for Glimepiride Polymorphs. J Pharm Sci 2012; 101:794-804. [DOI: 10.1002/jps.22799] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2011] [Revised: 08/19/2011] [Accepted: 10/07/2011] [Indexed: 11/06/2022]
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22
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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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Havele SS, Dhaneshwar SR. SIMULTANEOUS DETERMINATION OF METFORMIN HYDROCHLORIDE IN ITS MULTICOMPONENT DOSAGE FORMS WITH SULFONYL UREAS LIKE GLICLAZIDE AND GLIMEPIRIDE USING HPTLC. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.557465] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Shweta S. Havele
- a Research and Development Centre in Pharmaceutical Sciences and Applied Chemistry, Poona College of Pharmacy, Bharati Vidyapeeth University , Maharashtra, India
| | - Sunil R. Dhaneshwar
- a Research and Development Centre in Pharmaceutical Sciences and Applied Chemistry, Poona College of Pharmacy, Bharati Vidyapeeth University , Maharashtra, India
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Hefnawy MM, Sultan MA, Al-Johar HI, Kassem MG, Aboul-Enein HY. Multi-objective optimization strategy based on desirability functions used for electrophoratic separation and quantification of rosiglitazone and glimepiride in plasma and formulations. Drug Test Anal 2011; 4:39-47. [DOI: 10.1002/dta.260] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2010] [Revised: 11/23/2010] [Accepted: 12/07/2010] [Indexed: 11/07/2022]
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25
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Simultaneous identification and validated quantification of 11 oral hypoglycaemic drugs in plasma by electrospray ionisation liquid chromatography–mass spectrometry. Anal Bioanal Chem 2011; 400:33-41. [DOI: 10.1007/s00216-011-4698-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 01/18/2011] [Accepted: 01/18/2011] [Indexed: 11/26/2022]
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26
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Lestari MLAD, Indrayanto G. Glimepiride. PROFILES OF DRUG SUBSTANCES, EXCIPIENTS, AND RELATED METHODOLOGY 2011; 36:169-204. [PMID: 22469262 DOI: 10.1016/b978-0-12-387667-6.00005-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Glimepiride, which belongs to the sulfonylurea group, has been widely analyzed for its physical chemical properties including its crystallinity. Moreover, methods to quantify glimepiride and its impurities, either in pharmaceutical dosage form or in biological sample, have also been extensively developed and reported. This chapter extracts all information needed to give more perspective regarding to this substance.
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Zhou Z, Zhang J, Zhang W, Bai Y, Liu H. Rapid screening for synthetic antidiabetic drug adulteration in herbal dietary supplements using direct analysis in real time mass spectrometry. Analyst 2011; 136:2613-8. [DOI: 10.1039/c0an01047b] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Bandarkar FS, Khattab IS. SIMULTANEOUS ESTIMATION OF GLIBENCLAMIDE, GLICLAZIDE, AND METFORMIN HYDROCHLORIDE FROM BULK AND COMMERCIAL PRODUCTS USING A VALIDATED ULTRA FAST LIQUID CHROMATOGRAPHY TECHNIQUE. J LIQ CHROMATOGR R T 2010. [DOI: 10.1080/10826076.2010.532704] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- F. S. Bandarkar
- a Department of Pharmaceutics, Faculty of Pharmacy , Kuwait University , Safat, Kuwait
| | - I. S. Khattab
- a Department of Pharmaceutics, Faculty of Pharmacy , Kuwait University , Safat, Kuwait
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29
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High-performance Liquid Chromatographic Analysis of Pioglitazone, Gliquidone, Rosuvastatin and Simvastatin in Formulations and Human Serum. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090333] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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A Review of Analytical Techniques for Determination of Glimepiride: Present and Perspectives. Ther Drug Monit 2010; 32:550-9. [DOI: 10.1097/ftd.0b013e3181eea55a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Xu C, Wang H, Zhao Z, Tang Q, Guo Y, Lü L. Studies of the Interesting Gas-phase Rearrangement Reactions of 2-Pyrimidinyloxy-N-arylbenzylurea Promoted by Urea-Carbamimidic Acid Tautomerism by ESI-MS/MS and Theoretical Computation. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.201090298] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Abstract
Laboratory diagnostics play an important role in the treatment of patients with acute poisoning. The classical clinical chemistry and hematology tests help initiate supportive treatment, and specialized methods enable elucidation of the poisons involved. In this context, two different analytical approaches are used: the direct quantification of a potentially involved compound or screening procedures looking either for a distinct drug class or a wide variety of different compounds. The most common tests are immunoassays, which have the advantage of being fast and highly automated. These assays are available for the substances which are often involved in intoxications. The other analytical technique which is widely used is hyphenated chromatography consisting of either high-performance liquid chromatography or gas chromatography as chromatographic systems and detection with a diode-array or mass spectrometer. Whereas gas chromatography mass spectrometry screening procedures have been known for a long time, liquid chromatography mass spectrometry screening methods are now developed by different research groups and still need to prove their reliability. In this review, the different analytical technologies and their application will be discussed.
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Medvedovici A, Albu F, David V. HANDLING DRAWBACKS OF MASS SPECTROMETRIC DETECTION COUPLED TO LIQUID CHROMATOGRAPHY IN BIOANALYSIS. J LIQ CHROMATOGR R T 2010. [DOI: 10.1080/10826076.2010.484375] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Andrei Medvedovici
- a Department of Analytical Chemistry, Faculty of Chemistry , University of Bucharest , Bucharest , Romania
| | - Florin Albu
- b Bioanalytical Laboratory , S.C. LaborMed Pharma S.A. , Bucharest , Romania
| | - Victor David
- a Department of Analytical Chemistry, Faculty of Chemistry , University of Bucharest , Bucharest , Romania
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Remane D, Meyer MR, Peters FT, Wissenbach DK, Maurer HH. Fast and simple procedure for liquid–liquid extraction of 136 analytes from different drug classes for development of a liquid chromatographic-tandem mass spectrometric quantification method in human blood plasma. Anal Bioanal Chem 2010; 397:2303-14. [DOI: 10.1007/s00216-010-3820-7] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2010] [Revised: 04/29/2010] [Accepted: 05/02/2010] [Indexed: 11/30/2022]
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36
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Feng CH, Yang CM, Lu CY. Trace analysis of glyclazide in human plasma at microscale level by mass spectrometry. J Sep Sci 2009; 32:3411-7. [PMID: 19764053 DOI: 10.1002/jssc.200900388] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Green (reagents and organic solvents saving) analytical chemistry is a new strategy for pharmaceutical analysis. The principles of this idea include primary elimination or at least reduction of the amounts of organic reagents and solvents. In this study, we have provided two simple methods for the analysis of clinical drugs in human plasma. One is the capillary LC (Cap LC) connected to MS-MS, the other is the matrix-assisted laser desorption ionization (MALDI) connected to TOF MS. Sulfonylurea drugs are usually used in diabetes mellitus patients. Diabetes is a syndrome of disordered metabolism resulting in abnormally high blood sugar levels (hyperglycemia). These microscale methods were successfully applied for the monitoring of drug levels in human plasma using gliclazide (a second-generation sulfonylurea) as the test platform. The sensitivity of these methods is sufficient for detecting the gliclazide within a therapeutic range. All the analytical procedures (including human plasma, sample preparation, and flow rate of the analytical system) were at microscale level. These two methods would lower the consumption of organic solvents further safeguarding our environment.
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Affiliation(s)
- Chia-Hsien Feng
- Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
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37
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Hu X, Zheng Y, Sun J, Shang L, Wang G, Zhang H. Simultaneous Quantification of Benazepril, Gliclazide and Valsartan in Human Plasma by LC–MS–MS and Application for Rapidly Measuring Protein Binding Interaction between Rhein and These Three Drugs. Chromatographia 2009. [DOI: 10.1365/s10337-009-1017-z] [Citation(s) in RCA: 7] [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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38
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Saar E, Gerostamoulos D, Drummer OH, Beyer J. Comparison of extraction efficiencies and LC-MS-MS matrix effects using LLE and SPE methods for 19 antipsychotics in human blood. Anal Bioanal Chem 2008; 393:727-34. [PMID: 19002441 DOI: 10.1007/s00216-008-2498-6] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2008] [Revised: 10/20/2008] [Accepted: 10/24/2008] [Indexed: 11/29/2022]
Abstract
Antipsychotic drugs are frequently associated with sudden death investigations. Detection of these drugs is necessary to establish their use and possible contribution to the death. LC-MS(MS) methods are common; however accurate and precise quantification is assured by using validated methods. This study compared extraction efficiency and matrix effects using common liquid-liquid and solid-phase extraction procedures in both ante-mortem and post-mortem specimen using LC-MS-MS. Extraction efficiencies and matrix effects were determined in five different blank blood specimens of each blood type. The samples were extracted using a number of different liquid-liquid extraction methods and compared with a standard mixed-mode solid-phase extraction method. Matrix effects were determined using a post-extraction addition approach-the blank blood specimens were extracted as described above and the extracts were reconstituted in mobile phase containing a known amount of analytes. The extraction comparison of ante-mortem and post-mortem blood showed considerable differences, in particular the extraction efficiency was quite different between ante-mortem and post-mortem blood. Quantitative methods used for determination of antipsychotic drugs in post-mortem blood should establish that there are no differences in extraction efficiency and matrix effects, particularly if using ante-mortem blood as calibrator.
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Affiliation(s)
- Eva Saar
- Department of Forensic Medicine, Monash University, Victorian Institute of Forensic Medicine, 57-83 Kavanagh St, Southbank, Australia
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39
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Mass spectrometric approaches in impaired driving toxicology. Anal Bioanal Chem 2008; 393:97-107. [DOI: 10.1007/s00216-008-2338-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2008] [Revised: 08/04/2008] [Accepted: 08/05/2008] [Indexed: 12/22/2022]
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40
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Maurer HH. Chapter 12 Forensic screening with GC-MS. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/s1567-7192(06)06012-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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41
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Naraharisetti SB, Kirby BJ, Hebert MF, Easterling TR, Unadkat JD. Validation of a sensitive LC-MS assay for quantification of glyburide and its metabolite 4-transhydroxy glyburide in plasma and urine: an OPRU Network study. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 860:34-41. [PMID: 17980680 DOI: 10.1016/j.jchromb.2007.10.010] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Revised: 09/10/2007] [Accepted: 10/03/2007] [Indexed: 10/22/2022]
Abstract
Glyburide (glibenclamide, INN), a second generation sulfonylurea is widely used in the treatment of gestational diabetes mellitus (GDM). None of the previously reported analytical methods provide adequate sensitivity for the expected sub-nanogram/mL maternal and umbilical cord plasma concentrations of glyburide during pregnancy. We developed and validated a sensitive and low sample volume liquid chromatographic-mass spectrometric (LC-MS) method for simultaneous determination of glyburide (GLY) and its metabolite, 4-transhydroxy glyburide (M1) in human plasma (0.5 mL) or urine (0.1 mL). The limits of quantitation (LOQ) for GLY and M1 in plasma were 0.25 and 0.40 ng/mL, respectively whereas it was 1.06 ng/mL for M1 in urine. As measured by quality control samples, precision (% coefficient of variation) of the assay was <15% whereas the accuracy (% deviation from expected) ranged from -10.1 to 14.3%. We found that the GLY metabolite, M1 is excreted in the urine as the glucuronide-conjugate.
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Affiliation(s)
- Suresh Babu Naraharisetti
- Department of Pharmaceutics, School of Pharmacy, Box 357610, University of Washington, Seattle, WA 98195-7610, United States
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42
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Wang M, Miksa IR. Multi-component plasma quantitation of anti-hyperglycemic pharmaceutical compounds using liquid chromatography-tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 856:318-27. [PMID: 17689303 DOI: 10.1016/j.jchromb.2007.06.037] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2007] [Revised: 04/11/2007] [Accepted: 06/22/2007] [Indexed: 11/28/2022]
Abstract
Type-2 diabetes is a disorder characterized by disrupted insulin production leading to high blood glucose levels. To control this disease, combination therapy is often used. Hypoglycemic agents such as metformin, glipizide, glyburide, repaglinide, rosiglitazone, nateglinide, and pioglitazone are widely prescribed to control blood sugar levels. These drugs provide the basis for the development of a quantitative multianalyte bioanalytical method. As an example, a highly sensitive and selective multi-drug method based on liquid chromatography tandem mass spectrometry (LC-MS/MS) was developed. This rapid, automated method consists of protein precipitation of 20 microL of plasma coupled with gradient HPLC elution of compounds using 10 mM ammonium formate buffer and 0.1% formic acid in acetonitrile as the mobile phases. MS/MS detection was performed using turbo ion spray in the positive ion multiple reaction monitoring (SRM) mode. A lower limit of quantitation (LLQ) in a range of 1.0-5.0 ng/mL was achieved for all analytes. The linearity of the method was observed over a 500-fold dynamic range. Drug recoveries ranged from 86.2 to 94.2% for all analytes of interest. Selectivity, sample dilution, intra-day and inter-day accuracy and precision, and stability assessment were evaluated for all compounds.
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Affiliation(s)
- Ming Wang
- Merck & Co., Inc. Safety Assessment, Biochemical Toxicology, West Point, PA 19468, United States
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43
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Georgita C, Albu F, David V, Medvedovici A. Simultaneous assay of metformin and glibenclamide in human plasma based on extraction-less sample preparation procedure and LC/(APCI)MS. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 854:211-8. [PMID: 17500048 DOI: 10.1016/j.jchromb.2007.04.032] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2007] [Revised: 04/17/2007] [Accepted: 04/20/2007] [Indexed: 11/25/2022]
Abstract
Separation of metformin and glibenclamide was achieved within a single chromatographic run on a Zorbax CN column, under isocratic conditions, using acetonitrile and aqueous component (0.01 moles/L ammonium acetate adjusted at pH 3.5 with acetic acid) in volumetric ratio 1/1. Plasma sample preparation is based on protein precipitation by means of organic solvent addition. 1,3,5-Triazine-2,4,6-triamine (IS1) was used as internal standard for metformin, while gliquidone (IS2) played the same role for glibenclamide. Detection was performed with an ion trap mass analyzer, using atmospheric pressure chemical ionization (APCI). A single MS stage was used for detection of metformin and IS1, by extracting ion chromatograms corresponding to molecular ions. MS/MS detection in the SRM mode was used for glibenclamide (m/z transition from 494 to 369 Da) and IS2 (m/z transition from 528 to 403 Da). The method produces linear responses up to 2000 ng/mL for metformin and 400 ng/mL for glibenclamide, respectively. Low limits of quantification were found in the 40 ng/mL range for metformin and at the 4 ng/mL level for glibenclamide. Precision was characterized by relative standard deviations (RSD%) below 9%. The analytical method was successfully applied to a single dose, open-label, randomized, two-period, two-sequence, crossover bioequivalence study of two commercially available anti-diabetic combinations containing 400 mg metformin and 2.5 mg of glibenclamide per coated tablet.
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Affiliation(s)
- Cristina Georgita
- S.C. Labormed Pharma S.A., Splaiul Independentei No. 319E, Bucharest 060044, Romania
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Beyer J, Peters FT, Kraemer T, Maurer HH. Detection and validated quantification of toxic alkaloids in human blood plasma--comparison of LC-APCI-MS with LC-ESI-MS/MS. JOURNAL OF MASS SPECTROMETRY : JMS 2007; 42:621-33. [PMID: 17323418 DOI: 10.1002/jms.1191] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Poisonings with toxic plants may occur after abuse, intentional or accidental ingestion of plants. For diagnosis of such poisonings, multianalyte procedures were developed for detection and validated quantification of the toxic alkaloids aconitine, atropine, colchicine, coniine, cytisine, nicotine and its metabolite cotinine, physostigmine, and scopolamine in plasma using LC-APCI-MS and LC-ESI-MS/MS. After mixed-mode solid-phase extraction of 1 ml of plasma, the analytes were separated using a C8 base select separation column and gradient elution (acetonitrile/ammonium formate, pH 3.5). Calibration curves were used for quantification with cotinine-d(3), benzoylecgonine-d(3), and trimipramine-d(3) as internal standards. The method was validated according to international guidelines. Both assays were selective for the tested compounds. No instability was observed after repeated freezing and thawing or in processed samples. The assays were linear for coniine, cytisine, nicotine and its metabolite cotinine, from 50 to 1000 ng/ml using LC-APCI-MS and 1 to 1000 ng/ml using LC-ESI-MS/MS, respectively, and for aconitine, atropine, colchicine, physostigmine, and scopolamine from 5 to 100 ng/ml for LC-APCI-MS and 0.1 to 100 ng/ml for LC-ESI-MS/MS, respectively. Accuracy ranged from -38.6 to 14.0%, repeatability from 2.5 to 13.5%, and intermediate precision from 4.8 to 13.5% using LC-APCI-MS and from -38.3 to 8.3% for accuracy, from 3.5 to 13.8%, for repeatability, and from 4.3 to 14.7% for intermediate precision using LC-ESI-MS/MS. The lower limit of quantification was fixed at the lowest calibrator in the linearity experiments. With the exception of the greater sensitivity and higher identification power, LC-ESI-MS/MS had no major advantages over LC-APCI-MS. Both presented assays were applicable for sensitive detection of all studied analytes and for accurate and precise quantification, with the exception of the rather volatile nicotine. The applicability of the assays was demonstrated by analysis of plasma samples from suspected poisoning cases.
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Affiliation(s)
- Jochen Beyer
- Department of Experimental and Clinical Toxicology, Institute of Experimental and Clinical Pharmacology and Toxicology, Saarland University, D-66421 Homburg (Saar), Germany
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Drummer OH. Requirements for bioanalytical procedures in postmortem toxicology. Anal Bioanal Chem 2007; 388:1495-503. [PMID: 17377776 DOI: 10.1007/s00216-007-1238-7] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2007] [Revised: 02/25/2007] [Accepted: 03/01/2007] [Indexed: 10/23/2022]
Abstract
The application of analytical techniques in postmortem toxicology is often more difficult than in other forms of forensic toxicology owing to the variable and often degraded nature of the specimens and the diverse range of specimens available for analysis. Consequently, analysts must ensure that all methods are fully validated for the particular postmortem specimen(s) used. Collection of specimens must be standardized to minimize site-to-site variability and should if available include a peripheral blood sample and at least one other specimen. Urine and vitreous humor are good specimens to complement blood. In some circumstances solid tissues such as liver are recommended as well as gastric contents. Substance-screening techniques are the most important element since they will determine the range of substances that were targeted in the investigation and provide initial indication of the possible role of substances in the death. While immunoassay techniques are still commonly used for the most common drugs-of-abuse, chromatographic screening methods are required for general unknown testing. These are still predominately gas chromatography (GC) based using nitrogen/phosphorous detection and/or mass spectrometry (MS) detection, although some laboratories are now using time-of-flight MS or liquid chromatography (LC)-MS(MS) to cover a sometimes more limited range of substances. It is recommended that laboratories include a second chromatographic method to provide coverage of acidic and other substances not readily covered by a GC-based screen when extracts do not include all physiochemical types. This may include a gradient high-performance liquid chromatography (HPLC) photodiode array method, or better LC-MS(MS). Substance-specific techniques (e.g., benzodiazepines, opiates) providing a second form of identification (confirmation) are now divided between GC-MS(MS) and LC-MS(MS) procedures. LC-MS(MS) has taken over from many methods for the more polar compounds previously used in HPLC or in GC methods requiring derivatization. Analysts using LC-MS will need to obtain clean extracts to avoid poor and variable sensitivity caused by background suppression of the signal. Isolation techniques in postmortem toxicology tend to favor liquid extraction; however solid-phase extraction and solid-phase microextraction methods are available for many analytes.
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Affiliation(s)
- Olaf H Drummer
- Victorian Institute of Forensic Medicine, Department of Forensic Medicine, Monash University, Southbank, VIC 3006, Australia.
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Maurer HH. Current role of liquid chromatography–mass spectrometry in clinical and forensic toxicology. Anal Bioanal Chem 2007; 388:1315-25. [PMID: 17377775 DOI: 10.1007/s00216-007-1248-5] [Citation(s) in RCA: 170] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2007] [Revised: 02/27/2007] [Accepted: 03/06/2007] [Indexed: 10/23/2022]
Abstract
This paper reviews multi-analyte single-stage and tandem liquid chromatography-mass spectrometry (LC-MS) procedures using different mass analyzers (quadrupole, ion trap, time-of-flight) for screening, identification, and/or quantification of drugs, poisons, and/or their metabolites in blood, plasma, serum, or urine published after 2004. Basic information about the biosample assayed, work-up, LC column, mobile phase, ionization type, mass spectral detection mode, and validation data of each procedure is summarized in tables. The following analytes are covered: drugs of abuse, analgesics, opioids, sedative-hypnotics, benzodiazepines, antidepressants including selective-serotonin reuptake inhibitors (SSRIs), herbal phenalkylamines (ephedrines), oral antidiabetics, antiarrhythmics and other cardiovascular drugs, antiretroviral drugs, toxic alkaloids, quaternary ammonium drugs and herbicides, and dialkylphosphate pesticides. The pros and cons of the reviewed procedures are critically discussed, particularly, the need for studies on matrix effects, selectivity, analyte stability, and the use of stable-isotope labeled internal standards instead of unlabeled therapeutic drugs. In conclusion, LC-MS will probably become a gold standard for detection of very low concentrations particularly in alternative matrices and for quantification in clinical and forensic toxicology. However, some drawbacks still need to be addressed and finally overcome.
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Affiliation(s)
- Hans H Maurer
- Department of Experimental and Clinical Toxicology, Institute of Experimental and Clinical Pharmacology and Toxicology, Saarland University, Homburg (Saar), Germany.
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Chakradhar L, Kallem R, Karthik A, Sundari BT, Ramesh S, Mullangi R, Srinivas NR. A rapid and highly sensitive method for the determination of glimepiride in human plasma by liquid chromatography–electrospray ionization tandem mass spectrometry: application to a pre-clinical pharmacokinetic study. Biomed Chromatogr 2007; 22:58-63. [PMID: 17642067 DOI: 10.1002/bmc.896] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
A sensitive and specific liquid chromatography-positive electrospray ionization-tandem mass spectrometry method has been developed and validated for the determination of glimepiride (GPD) in human plasma. GPD and the internal standard (IS, glibenclamide) were extracted from a small aliquot of human plasma (200 microL) by a simple liquid-liquid extraction technique using ethyl acetate as extraction solvent. The compounds were separated on a YMC Propack, C18, 4.6x50 mm column using a mixture of ammonium acetate buffer, acetonitrile and methanol (30:60:10, v/v) as mobile phase at 0.5 mL/min on an API 4000 Sciex mass spectrometer connected to an Agilent HPLC system. Method validation and pre-clinical sample analysis was performed as per FDA guidelines and the results met the acceptance criteria. GPD and IS were detected without any interference from human plasma matrix. The method was proved to be accurate and precise at linearity range of 0.02-100.00 ng/mL with a correlation coefficient of 0.999. The method was robust with a lower limit of quantitation of 0.02 ng/mL. Intra- and inter-day accuracies for GPD were 88.60-113.50 and 96.82-103.93%, respectively. The inter-day precision was better than 12.21%. This method enabled faster and reliable determination of GPD in a pre-clinical study.
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Affiliation(s)
- Lagishetty Chakradhar
- Department of Drug Metabolism and Pharmacokinetics, Discovery Research, Dr Reddy's Laboratories Ltd, Miyapur, Hyderabad-500 049, India
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Li XY, Wang GJ, Sun JG, Zheng YT, Yan B, Xie HT, Wang X. LC–MS Determination and Pharmacokinetic Study of a Novel Sulfonylurea: Potential Hypoglycemic Agent in Rat Plasma. Chromatographia 2006. [DOI: 10.1365/s10337-006-0114-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Maurer HH. Hyphenated mass spectrometric techniques-indispensable tools in clinical and forensic toxicology and in doping control. JOURNAL OF MASS SPECTROMETRY : JMS 2006; 41:1399-413. [PMID: 17051522 DOI: 10.1002/jms.1112] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Hyphenated mass spectrometric techniques, particularly gas chromatography/mass spectrometry (GC/MS) and liquid chromatography/mass spectrometry (LC/MS), are indispensable tools in clinical and forensic toxicology and in doping control owing to their high sensitivity and specificity. They are used for screening, library-assisted identification and quantification of drugs, poisons and their metabolites, prerequisites for competent expertise in these fields. In addition, they allow the study of metabolism of new drugs or poisons as a basis for developing screening procedures in biological matrices, most notably in urine, or toxicological risk assessment. Concepts and procedures using GC/MS and LC/MS techniques in the areas of analytical toxicology and the role of mass spectral libraries are presented and discussed in this feature article. Finally, perspectives of their future position are discussed.
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Affiliation(s)
- Hans H Maurer
- Department of Experimental and Clinical Toxicology, Institute of Experimental and Clinical Pharmacology and Toxicology, University of Saarland, D-66421 Homburg (Saar), Germany.
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Foroutan SM, Zarghi A, Shafaati A, Khoddam A. Application of monolithic column in quantification of gliclazide in human plasma by liquid chromatography. J Pharm Biomed Anal 2006; 42:513-6. [PMID: 16797910 DOI: 10.1016/j.jpba.2006.05.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2006] [Revised: 05/02/2006] [Accepted: 05/05/2006] [Indexed: 11/25/2022]
Abstract
A simple, rapid and sensitive isocratic reversed phase HPLC method with UV detection using a monolithic column has been developed and validated for the determination of gliclazide in human plasma. The assay enables the measurement of gliclazide for therapeutic drug monitoring with a minimum quantification limit of 10ngml(-1). The method involves simple, one-step extraction procedure and analytical recovery was complete. The separation was carried out in reversed-phase conditions using a Chromolith Performance (RP-18e, 100mmx4.6mm) column with an isocratic mobile phase consisting of 0.01M disodium hydrogen phosphate buffer-acetonitrile (52:48, v/v) adjusted to pH 4.0. The wavelength was set at 230nm. The calibration curve was linear over the concentration range 10-5000ngml(-1). The coefficients of variation for inter-day and intra-day assay were found to be less than 6.0%.
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Affiliation(s)
- S M Foroutan
- Department of Pharmaceutics, School of Pharmacy, Shaheed Beheshti University of Medical Sciences, Tehran, Iran.
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