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Ahmed HM, Belal TS, Shaalan RA, El Yazbi FA, Elonsy SM. Validated capillary zone electrophoretic method for simultaneous analysis of benazepril in combination with amlodipine besylate and hydrochlorothiazide. ACTA CHROMATOGR 2020. [DOI: 10.1556/1326.2019.00686] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
In this work, a novel, simple, and quick capillary zone electrophoresis (CZE) method was proposed for simultaneous analysis of benazepril (BEN) with other co-administrated antihypertensive drugs, amlodipine besylate (AML) and hydrochlorothiazide (HCT), using a diode array detector (DAD). A fused silica capillary (78.5 cm total length, 70 cm effective length, and 75 μm id) was used in separation using a 40 mM phosphate buffer pH 7.5 as a running background electrolyte (BGE) under a positive potential of 30 KV, at a stable temperature of 25 °C for capillary during separation. Hydrodynamic injections were performed for 12 s at 50 mbar, and detection was performed at 210 nm for AML and BEN, at 225 nm for HCT, and at 232 nm for xipamide (XIP) added as an internal standard (IS). Separation of the three analyzed drugs and the IS was performed in less than 8 min. Migration times were 4.06, 5.23, 6.69, and 7.3 min for AML, HCT, BEN, and XIP, respectively. The findings proved that the proposed method was linear in the range of 10–80 μg/mL for all drugs with correlation coefficients >0.9994. The limit of detection (LOD) values of AML, HCT, and BEN were 1.004, 1.224, and 0.896 μg/mL, respectively, whereas the limit of quantification (LOQ) values were 3.124, 3.727, and 2.749 μg/mL for the cited drugs, respectively. Peak identity and purity were confirmed by DAD. The developed CZE method was applied for the analysis of the three antihypertensive drugs successfully in their combined pharmaceutical tablets, and it can be used for the quality control of single-pill combination (SPC) samples of these drugs in short time.
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Affiliation(s)
- Hytham M. Ahmed
- 1 Pharmaceutical Analysis Department, Faculty of Pharmacy, Menoufia University, Shebin El-Kom, Egypt
| | - Tarek S. Belal
- 2 Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, University of Alexandria, Alexandria 21521, Egypt
| | - Rasha A. Shaalan
- 2 Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, University of Alexandria, Alexandria 21521, Egypt
- 3 Pharmaceutical Chemistry Department, Faculty of Pharmacy and Drug Manufacturing, Pharos University in Alexandria, Egypt
| | - Fawzy A. El Yazbi
- 2 Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, University of Alexandria, Alexandria 21521, Egypt
| | - Sohila M. Elonsy
- 4 Pharmaceutical Analytical Chemistry Department, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt
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Elsebaei F, Zhu Y. Enhanced elution of angiotensin converting enzyme inhibitors in ion chromatography: Application to their simultaneous quantitation in formulations and human plasma. Microchem J 2016. [DOI: 10.1016/j.microc.2015.08.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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3
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Meimaroglou S, Vonaparti A, Migias G, Gennimata D, Poulou S, Panderi I. Direct injection human plasma analysis for the quantification of antihypertensive drugs for therapeutic drug monitoring using hydrophilic interaction liquid chromatography/electrospray ionization mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 1004:1-9. [DOI: 10.1016/j.jchromb.2015.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 08/31/2015] [Accepted: 09/02/2015] [Indexed: 11/26/2022]
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4
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Qiu X, Wang Z, Wang B, Zhan H, Pan X, Xu RA. Simultaneous determination of irbesartan and hydrochlorothiazide in human plasma by ultra high performance liquid chromatography tandem mass spectrometry and its application to a bioequivalence study. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 957:110-5. [DOI: 10.1016/j.jchromb.2014.03.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Revised: 02/26/2014] [Accepted: 03/03/2014] [Indexed: 11/26/2022]
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5
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New UPLC–MS/MS method for simultaneous determination of irbesartan and hydrochlorthiazide in human plasma. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2014. [DOI: 10.1007/s13738-014-0429-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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6
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Kepekci Tekkeli SE. Development of an HPLC-UV Method for the Analysis of Drugs Used for Combined Hypertension Therapy in Pharmaceutical Preparations and Human Plasma. JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY 2013; 2013:179627. [PMID: 23634320 PMCID: PMC3619551 DOI: 10.1155/2013/179627] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 02/19/2013] [Indexed: 06/02/2023]
Abstract
A simple, rapid, and selective HPLC-UV method was developed for the determination of antihypertensive drug substances: amlodipine besilat (AML), olmesartan medoxomil (OLM), valsartan (VAL), and hydrochlorothiazide (HCT) in pharmaceuticals and plasma. These substances are mostly used as combinations. The combinations are found in various forms, especially in current pharmaceuticals as threesome components: OLM, AML, and HCT (combination I) and AML, VAL, and HCT (combination II). The separation was achieved by using an RP-CN column, and acetonitrile-methanol-10 mmol orthophosphoric acid pH 2.5 (7 : 13 : 80, v/v/v) was used as a mobile phase; the detector wavelength was set at 235 nm. The linear ranges were found as 0.1-18.5 μ g/mL, 0.4-25.6 μ g/mL, 0.3-15.5 μ g/mL, and 0.3-22 μ g/mL for AML, OLM, VAL, and HCT, respectively. In order to check the selectivity of the method for pharmaceutical preparations, forced degradation studies were carried out. According to the validation studies, the developed method was found to be reproducible and accurate as shown by RSD ≤6.1%, 5.7%, 6.9%, and 4.6% and relative mean error (RME) ≤10.6%, 5.8%, 6.5%, and 6.8% for AML, OLM, VAL, and HCT, respectively. Consequently, the method was applied to the analysis of tablets and plasma of the patients using drugs including those substances.
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Affiliation(s)
- Serife Evrim Kepekci Tekkeli
- Department of Analytical Chemistry, Faculty of Pharmacy, Bezmialem Vakif University, Fatih, 34093 Istanbul, Turkey
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LC-MS/MS method for simultaneous estimation of candesartan and hydrochlorothiazide in human plasma and its use in clinical pharmacokinetics. Bioanalysis 2012; 4:1195-204. [PMID: 22651563 DOI: 10.4155/bio.12.83] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND ATACAND HCT(®) (candesartan cilexetil-hydrochlorothiazide [CAN-HCTZ]) combines an angiotensin II receptor (type AT1) antagonist and a diuretic. Quantification of CAN and HCTZ in biological matrices has traditionally been difficult - developing a single method with the desired sensitivity has been the issue. RESULTS A high-throughput bioanalytical method for the analysis of CAN and HCTZ in human plasma using liquid-liquid extraction and LC coupled to negative ion mode MS/MS has been developed and validated according to US FDA guidelines. The method uses 100 µl plasma and covers the calibration range 1-160 ng/ml for CAN and 2-160 ng/ml for HCTZ for routine pharmacokinetic studies in humans. The intra- and inter-day precision values for CAN and HCTZ met the acceptance criteria. CAN and HCTZ were stable in a battery of stability studies (benchtop, autosampler and long-term). CONCLUSION The advantages of the described technique included a single method with a shorter run time (2.5 min), simple extraction technique, LLOQ of 1 ng/ml for CAN and 2 ng/ml for HCTZ and lower sample volume (0.10 ml), which overcomes drawbacks of two single methods for each analyte, such as higher analysis time, LOQ and sample volume, as in previously published methods. The developed assay was applied to an oral pharmacokinetic study in humans.
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Belal F, El-Brashy AM, El-Enany N, Tolba MM. Simultaneous determination of celiprolol HCl and chlorthalidone in tablets and biological fluids using high-performance liquid chromatography. ACTA CHROMATOGR 2012. [DOI: 10.1556/achrom.24.2012.2.3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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9
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Coudoré F, Harvard L, Lefeuvre S, Billaud EM, Beaune P, Bobrie G, Azizi M, Prognon P, Laurent S. HPLC–DAD Analysis of Hydrochlorothiazide and Irbesartan in Hypertensive Patients on Fixed-Dose Combination Therapy. Chromatographia 2011. [DOI: 10.1007/s10337-011-2111-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Meyyanathan SN, Rajan S, Muralidharan S, Birajdar AS, Suresh B. A Validated RP-HPLC Method for Simultaneous Estimation of Nebivolol and Hydrochlorothiazide in Tablets. Indian J Pharm Sci 2011; 70:687-9. [PMID: 21394278 PMCID: PMC3038306 DOI: 10.4103/0250-474x.45420] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2007] [Revised: 04/21/2008] [Accepted: 10/23/2008] [Indexed: 11/30/2022] Open
Abstract
A simple, selective, rapid, precise and economical reverse phase high pressure liquid chromatographic method has been developed for the simultaneous estimation of nebivolol and hydrochlorthiazide from pharmaceutical formulation. Phenomenex Gemini C18 (25 cm×4.6 mm i.d., 5 μ) column with a mobile phase consisting of acetonitrile: 50mM ammonium acetate (adjusted to pH 3.5 using orthophosphoric acid) (70:30 v/v) at a flow rate of 1.0 ml/min was used. Detection was carried out at 254 nm. Probenecid was used as an internal standard. The retention times of probenecid, nebivolol and hydrochlorthiazide were 13.05, 3.32 and 4.25 min, respectively. The developed method was validated in terms of accuracy, precision, linearity, limit of detection, limit of quantitation and solution stability. The proposed method can be used for the estimation of these drugs in combined dosage forms.
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Affiliation(s)
- S N Meyyanathan
- Department of Pharmaceutical Analysis, J. S. S. College of Pharmacy, Ootacamund-643 001, India
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Pilli NR, Inamadugu JK, Mullangi R, Karra VK, Vaidya JR, Rao JVLNS. Simultaneous determination of atorvastatin, amlodipine, ramipril and benazepril in human plasma by LC-MS/MS and its application to a human pharmacokinetic study. Biomed Chromatogr 2011; 25:439-49. [PMID: 20629042 DOI: 10.1002/bmc.1462] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
A rapid, simple, sensitive and specific LC-MS/MS method has been developed and validated for the simultaneous estimation of atorvastatin (ATO), amlodipine (AML), ramipril (RAM) and benazepril (BEN) using nevirapine as an internal standard (IS). The API-4000 LC-MS/MS was operated under the multiple-reaction monitoring mode using electrospray ionization. Analytes and IS were extracted from plasma by simple liquid-liquid extraction technique using ethyl acetate. The reconstituted samples were chromatographed on C(18) column by pumping 0.1% formic acid-acetonitrile (15:85, v/v) at a flow rate of 1 mL/min. A detailed validation of the method was performed as per the FDA guidelines and the standard curves were found to be linear in the range of 0.26-210 ng/mL for ATO; 0.05-20.5 ng/mL for AML; 0.25-208 ng/mL for RAM and 0.74-607 ng/mL for BEN with mean correlation coefficient of ≥0.99 for each analyte. The intra-day and inter-day precision and accuracy results were well with in the acceptable limits. A run time of 2.5 min for each sample made it possible to analyze more than 400 human plasma samples per day. The developed assay method was successfully applied to a pharmacokinetic study in human male volunteers.
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Affiliation(s)
- Nageswara Rao Pilli
- University College of Pharmaceutical Sciences, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad, India
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12
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Moussa B, Mohamed M, Youssef N. Simultaneous densitometric TLC analysis of olmesartan medoxomil and hydrochlorothiazide in the tablet dosage form. JPC-J PLANAR CHROMAT 2011. [DOI: 10.1556/jpc.24.2011.1.6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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West C, Elfakir C, Lafosse M. Porous graphitic carbon: A versatile stationary phase for liquid chromatography. J Chromatogr A 2010; 1217:3201-16. [DOI: 10.1016/j.chroma.2009.09.052] [Citation(s) in RCA: 155] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2009] [Revised: 09/16/2009] [Accepted: 09/21/2009] [Indexed: 10/20/2022]
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14
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Tutunji LF, Tutunji MF, Alzoubi MI, Khabbas MH, Arida AI. Simultaneous determination of irbesartan and hydrochlorothiazide in human plasma using HPLC coupled with tandem mass spectrometry: Application to bioequivalence studies. J Pharm Biomed Anal 2010; 51:985-90. [DOI: 10.1016/j.jpba.2009.10.023] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Revised: 09/26/2009] [Accepted: 10/30/2009] [Indexed: 11/25/2022]
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15
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Wagner M, Bourgogne E, Varesio E, Hopfgartner G. Quantitation of polar analytes using column-switching: Application to oxycodone and three metabolites in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2010; 878:637-44. [DOI: 10.1016/j.jchromb.2010.01.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Revised: 12/20/2009] [Accepted: 01/11/2010] [Indexed: 11/28/2022]
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16
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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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17
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Shao B, Zhang J, Yang Y, Meng J, Wu Y, Duan H. Simultaneous analysis of thirteen diuretics residues in bovine milk by ultra-performance liquid chromatography/tandem mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:3427-3433. [PMID: 18837072 DOI: 10.1002/rcm.3740] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A simple, rapid, sensitive and specific method used to screen and confirm multi-class diuretics residues in whole bovine milk is described. Thirteen drugs of four different classes including carbonic anhydrase inhibitors, loop, thiazide and potassium-sparing diuretics were extracted from whole milk by acetonitrile followed by further purification with hexane. The analytes were separated using an ACQUITY UPLC BEH C18 column and detected by electrospray ionization tandem mass spectrometry (ESI-MS/MS). MS data acquisition was performed by a time-scheduled multiple reaction monitoring program, selecting two ion transitions for each target compound. The overall average recoveries based on matrix-fortified curves fortified with diuretics at three levels ranged from 80.6 to 108.8% with the coefficients of variation ranging from 2.6 to 19.7% (n = 6). The limits of quantitation (LOQs) of diuretics in bovine milk were 5.0 microg/kg for spironolactone and 0.5 microg/kg for other analytes, respectively.
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Affiliation(s)
- Bing Shao
- Central Lab, Beijing Center for Disease Control & Prevention, Beijing 100013, China.
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18
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Giancotti V, Medana C, Aigotti R, Pazzi M, Baiocchi C. LC–high-resolution multiple stage spectrometric analysis of diuretic compounds. J Pharm Biomed Anal 2008; 48:462-6. [DOI: 10.1016/j.jpba.2008.03.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2007] [Revised: 03/05/2008] [Accepted: 03/07/2008] [Indexed: 10/22/2022]
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19
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Quantitative in silico analysis of the selectivity of graphitic carbon synthesized by different methods. Anal Bioanal Chem 2007; 390:369-75. [DOI: 10.1007/s00216-007-1675-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2007] [Revised: 09/30/2007] [Accepted: 10/04/2007] [Indexed: 10/22/2022]
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20
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Liu F, Xu Y, Gao S, Zhang J, Guo Q. Determination of hydrochlorothiazide in human plasma by liquid chromatography/tandem mass spectrometry. J Pharm Biomed Anal 2007; 44:1187-91. [PMID: 17560749 DOI: 10.1016/j.jpba.2007.04.020] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2007] [Revised: 04/09/2007] [Accepted: 04/13/2007] [Indexed: 11/28/2022]
Abstract
In this study, a fast and sensitive liquid chromatography/tandem mass spectrometry method for determination of hydrochlorothiazide in human plasma was developed and validated. The analyte and irbesartan, used as the internal standard, were precipitated and extracted from plasma using methanol. Analysis was performed on a Phenomenex Kromasil C(8) column with water and methanol (27:73, v/v) as the mobile phase. Linearity was assessed from 0.78 to 200 ng/mL in plasma. The analytical method proved to be applicable in a pharmacokinetic study after oral administration of 12 mg hydrochlorothiazide tablets to 20 healthy volunteers.
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Affiliation(s)
- Fei Liu
- Department of Chemistry, University of Science and Technology of China, Hefei 230026, China
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21
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Rudzki PJ, Buś K, Ksycińska H, Kobylińska K. An overview of chromatographic methods coupled with mass spectrometric detection for determination of angiotensin-converting enzyme inhibitors in biological material. J Pharm Biomed Anal 2007; 44:356-67. [PMID: 17475434 DOI: 10.1016/j.jpba.2007.03.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 03/13/2007] [Accepted: 03/19/2007] [Indexed: 11/22/2022]
Abstract
Gas and liquid chromatography-mass spectrometry (GC-MS, LC-MS) methods for the determination of angiotensin-converting enzyme inhibitors (ACEIs) and their metabolites in biological material have been reviewed. Since 1980s those hyphenated techniques have been applied to quantitate ACE inhibitors and the dynamic increase in the number of relevant publications can be observed in recent years. Although most of the methods available in the literature were analyses of plasma or serum, assays of blood and urine were also included. Additionally, sample pretreatment methods, separation conditions and ionization modes were overviewed. Some information on chemical structures, cis-trans izomerization and stability of compounds in question was also included. Most of the reported methods were successfully applied to the pharmacokinetic studies in humans.
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Affiliation(s)
- Piotr J Rudzki
- Pharmaceutical Research Institute, Department of Pharmacology, 8 Rydygiera Street, 01-793 Warsaw, Poland
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Wang XD, Chan E, Chen X, Liao XX, Tang C, Zhou ZW, Huang M, Zhou SF. Simultaneous and rapid quantitation of benazepril and benazeprilat in human plasma by high performance liquid chromatography with ultraviolet detection. J Pharm Biomed Anal 2007; 44:224-30. [PMID: 17289327 DOI: 10.1016/j.jpba.2007.01.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2006] [Revised: 01/06/2007] [Accepted: 01/10/2007] [Indexed: 11/20/2022]
Abstract
A sensitive and accurate high-performance liquid chromatography (HPLC) method with ultraviolet (UV) detector was developed and validated for simultaneous determination of benazepril (BZL) and its active metabolite, benazeprilat (BZT), in human plasma. The plasma sample, after spiked with riluzole as an internal standard (IS), was subjected to a solid-phase extraction (SPE) prior to a HPLC analysis. Chromatographic separations were achieved on a Hypersil BDS C(18) (300 mm x 4.6mm, 5 microm). The mobile phase consisted of phosphate buffer (pH 2.6; 10mM) and acetonitrile mixture in a gradient mode. Detection was carried out at a wavelength of 237 nm. The retention times of BZL, BZT and IS were at about 6.2, 15.4 and 16.2 min, respectively. The calibration curve was linear in the range of 20-2000 ng/mL for both BZL and BZT (r(2)>0.997). At three quality control concentrations of 100, 500, and 1500 ng/mL, the intra-day and inter-day relative standard deviation ranged from 2.8 to 8.6% for BZL and from 2.2 to 8.5% for BZT, while the mean absolute percentage error ranged from -7.5 to 6.7% for BZL and from -6.0 to 3.2% for BZT. The limit of detection (LOD) was 10 ng/mL and the limit of quantification (LOQ) was 20 ng/mL for both BZL and BZT in human plasma. The method was successfully applied to bioequivalence evaluation of benazepril hydrochloride formulations in healthy Chinese.
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Affiliation(s)
- Xue-Ding Wang
- Institute of Clinical Pharmacology, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, China
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Song M, Hang T, Zhao H, Wang L, Ge P, Ma P. Simultaneous determination of amiloride and hydrochlorothiazide in human plasma by liquid chromatography/tandem mass spectrometry with positive/negative ion-switching electrospray ionisation. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2007; 21:3427-34. [PMID: 17902196 DOI: 10.1002/rcm.3235] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
A new method for simultaneous determination of amiloride and hydrochlorothiazide by liquid chromatography/electrospray tandem mass spectrometry (LC/MS/MS) operated in positive and negative ionization switching mode was developed and validated. Protein precipitation with acetonitrile was selected for sample preparation. The analytes were separated on a Phenomenex Curosil-PFP (250x4.6 mm, 5 microm) column by a gradient elution with a mobile phase consisting of 0.15% formic acid solution containing 0.23% ammonium acetate and methanol pumped at a flow rate of 1.0 mL.min(-1). Rizatriptan was used as the internal standard (IS) for quantification. The determination was carried out on a Waters Quattro-micro triple-quadrupole mass spectrometer operated in multiple reaction monitoring (MRM) mode using the following transitions monitored simultaneously: positive m/z 230-->171 for amiloride, m/z 270-->158 for rizatriptan, and negative m/z 296-->205 for hydrochlorothiazide. The lower limits of quantification (LLOQs) were 0.1 and 1.0 ng.mL(-1) for amiloride and hydrochlorothiazide, respectively, which were lower than other published methods by using ultraviolet (UV), fluorimetric or mass spectrometric detection. The intra- and inter-day precision and accuracy were studied at three different concentration levels and were always better than 15% (n=5). This simple and robust LC/MS/MS method was successfully applied to the pharmacokinetic study of compound amiloride and hydrochlorothiazide tablets in healthy male Chinese volunteers.
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Affiliation(s)
- Min Song
- Department of Pharmaceutical Analysis, China Pharmaceutical University, 24 Tongjia Lane, Nanjing 210009, China
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