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Xu YY, Qin F, Dai YX, Zhong XF, Yan J, Xu SM, Xu PS. Method development and validation of sildenafil, N-desmethylsildenafil and N1,N4-desmethylsildenafil by LC-MS/MS and its application. Anal Biochem 2021; 631:114355. [PMID: 34461080 DOI: 10.1016/j.ab.2021.114355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 08/19/2021] [Accepted: 08/21/2021] [Indexed: 11/19/2022]
Abstract
This study aimed to develop an LC-MS/MS method for determining sildenafil and its metabolites N-desmethylsildenafil and N1,N4-desmethylsildenafil in human plasma and applying it to a pharmacokinetic study of sildenafil in healthy volunteers. Sildenafil-d8 was used as the internal standard. Plasma samples were pretreated via protein precipitation with acetonitrile. The extractives were then separated on an ACQUITY UPLC BEH C18 (50-mm × 2.1-mm, 1.7-μm) column using gradient elution. The aqueous and organic mobile phases were ammonium formate 2 mM supplemented with 0.1% formic acid in water and acetonitrile, respectively, and the flow rate was 0.3 mL/min. An electrospray ionization source was applied, and multiple reaction monitoring was operated in the positive mode with selective channels at m/z 475.30 → 100.10, 461.20 → 283.30, 483.30 → 108.10, and 449.00 → 283.00 for sildenafil, sildenafil-d8, N-desmethylsildenafil, and N1,N4-desmethylsildenafil, respectively. The linear calibration curves of sildenafil and its metabolites spanned 1.0-1000 ng/mL. The lower limit of quantification was 1.0 ng/mL. The extractive recovery of analytes from the biological matrix was more than 90% and the matrix effect complied with relevant provisions. The intra- and inter-day precisions of sildenafil and its metabolite were <10%. The intra- and inter-day accuracy of sildenafil, N-desmethylsildenafil, and N1,N4-desmethylsildenafil was more than 99%. The method is highly sensitive and selective, and it was successfully applied to the bioequivalence studies of 100-mg sildenafil citrate tablets in 40 healthy Chinese volunteers.
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Affiliation(s)
- Yan-Ying Xu
- Department of Cardiovascular Medicine, Xiangya Hospital, Central South University, Changsha, 410008, PR China
| | - Fei Qin
- GuangZhou BAIYUNSHAN Pharmaceutical HOLDINGS CO., LTD., BAIYUNSHAN Pharmaceutical General Factory, Guangzhou, 510515, PR China
| | - Yi-Xin Dai
- Phase Ⅰ Clinical Trial Research Center, Xiangya Hospital, Central South University, Changsha, 410008, PR China
| | - Xue-Feng Zhong
- Phase Ⅰ Clinical Trial Research Center, Xiangya Hospital, Central South University, Changsha, 410008, PR China
| | - Juan Yan
- Phase Ⅰ Clinical Trial Research Center, Xiangya Hospital, Central South University, Changsha, 410008, PR China
| | - Su-Mei Xu
- Phase Ⅰ Clinical Trial Research Center, Xiangya Hospital, Central South University, Changsha, 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, PR China.
| | - Ping-Sheng Xu
- Phase Ⅰ Clinical Trial Research Center, Xiangya Hospital, Central South University, Changsha, 410008, PR China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, PR China.
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Dahshan HE, Helal MA, Mostafa SM, Elgawish MS. Development and validation of an HPLC-UV method for simultaneous determination of sildenafil and tramadol in biological fluids: Application to drug-drug interaction study. J Pharm Biomed Anal 2019; 168:201-208. [PMID: 30825803 DOI: 10.1016/j.jpba.2019.02.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/15/2019] [Accepted: 02/18/2019] [Indexed: 10/27/2022]
Abstract
The introduction of sildenafil (SDF) to treat erectile dysfunction has solved a widespread condition with negative on the quality of life. Recently, the co-administration of tramadol (TMD) with SDF to manage premature ejaculation has illegally increased and thus drug-drug interaction studies of these drugs became of great importance. Although certain biological functions have been altered upon co-administration of the two drugs, methods for their determination in vivo to understand their interactions have yet to be published. Herein, therefore, an HPLC method with photometric detection was developed for the determination of a binary mixture of TMD and SDF in rabbit plasma after oral administration. In this study, a reversed-phase chromatography was performed at room temperature on a C18 column with a mobile phase composed of 10 mM Na2HPO4 solution (pH 7.5): acetonitrile (45:55, v/v) at a flow rate of 0.8 mL min-1 using caffeine (CAF) as an internal standard. The detector was set at 220 nm. The total analysis time was 6 min. Calibration graphs were linear in the concentration ranges of 0.1-10 and 0.05-10 μg mL-1 with a detection limit of 0.05 and 0.02 μg mL-1 for TMD and SDF, respectively. The method was validated in terms of accuracy, precision, limit of detection and quantitation, recovery, and stability as per US FDA bioanalytical guidelines. In addition, the metabolites N-desmethylsildenafil (UK-103,320) and O-desmethyltramadol were quantified in rabbit plasma after 2 h of oral administration using LC-MS/MS. The simultaneous administration of TMD with SDF has affected peak plasma concentration (Cmax), Tmax, area under the concentration-time curve (AUC), and the elimination rate constant (Kel) of SDF. The present study is the first to give valuable insights into the drug-drug interaction and the pharmacokinetic implications associated with the co-administration of SDF and TMD.
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Affiliation(s)
- Hosam Eldin Dahshan
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia, 41522, Egypt
| | - Mohamed A Helal
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia, 41522, Egypt; Biomedical Sciences Program, University of Science and Technology, Zewail City of Science and Technology, Giza, 12587, Egypt
| | - Samia M Mostafa
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia, 41522, Egypt
| | - Mohamed Saleh Elgawish
- Medicinal Chemistry Department, Faculty of Pharmacy, Suez Canal University, Ismailia, 41522, Egypt.
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Asfaram A, Ghaedi M, Purkait MK. Novel synthesis of nanocomposite for the extraction of Sildenafil Citrate (Viagra) from water and urine samples: Process screening and optimization. ULTRASONICS SONOCHEMISTRY 2017. [PMID: 28633848 DOI: 10.1016/j.ultsonch.2017.03.045] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A sensitive analytical method is investigated to concentrate and determine trace level of Sildenafil Citrate (SLC) present in water and urine samples. The method is based on a sample treatment using dispersive solid-phase micro-extraction (DSPME) with laboratory-made Mn@ CuS/ZnS nanocomposite loaded on activated carbon (Mn@ CuS/ZnS-NCs-AC) as a sorbent for the target analyte. The efficiency was enhanced by ultrasound-assisted (UA) with dispersive nanocomposite solid-phase micro-extraction (UA-DNSPME). Four significant variables affecting SLC recovery like; pH, eluent volume, sonication time and adsorbent mass were selected by the Plackett-Burman design (PBD) experiments. These selected factors were optimized by the central composite design (CCD) to maximize extraction of SLC. The results exhibited that the optimum conditions for maximizing extraction of SLC were 6.0 pH, 300μL eluent (acetonitrile) volume, 10mg of adsorbent and 6min sonication time. Under optimized conditions, virtuous linearity of SLC was ranged from 30 to 4000ngmL-1 with R2 of 0.99. The limit of detection (LOD) was 2.50ngmL-1 and the recoveries at two spiked levels were ranged from 97.37 to 103.21% with the relative standard deviation (RSD) less than 4.50% (n=15). The enhancement factor (EF) was 81.91. The results show that the combination UAE with DNSPME is a suitable method for the determination of SLC in water and urine samples.
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Affiliation(s)
- Arash Asfaram
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran
| | - Mehrorang Ghaedi
- Chemistry Department, Yasouj University, Yasouj 75918-74831, Iran.
| | - Mihir Kumar Purkait
- Department of Chemical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India
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Li J, Roh SH, Shaodong J, Hong JY, Lee DK, Shin BK, Park JH, Lee J, Kwon SW. Solid-phase extraction assisted dispersive liquid-liquid microextraction based on solidification of floating organic droplet to determine sildenafil and its analogues in dietary supplements. J Sep Sci 2017; 40:3120-3129. [DOI: 10.1002/jssc.201700159] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 05/29/2017] [Accepted: 05/29/2017] [Indexed: 01/23/2023]
Affiliation(s)
- Jing Li
- College of Pharmacy; Seoul National University; Seoul Korea
| | - Si Hun Roh
- College of Pharmacy; Seoul National University; Seoul Korea
| | - Jia Shaodong
- College of Pharmacy; Seoul National University; Seoul Korea
| | - Ji Yeon Hong
- College of Pharmacy; Seoul National University; Seoul Korea
| | - Dong-Kyu Lee
- College of Pharmacy; Seoul National University; Seoul Korea
| | - Byong-kyu Shin
- College of Pharmacy; Seoul National University; Seoul Korea
| | - Jeong Hill Park
- College of Pharmacy and Research Institute of Pharmaceutical Sciences; Seoul National University; Seoul Korea
- Faculty of Pharmacy; Ton Duc Thang University; Ho Chi Minh City Vietnam
| | - Jeongmi Lee
- School of Pharmacy; Sungkyunkwan University; Suwon Korea
| | - Sung Won Kwon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences; Seoul National University; Seoul Korea
- Plant Genomics and Breeding Institute; Seoul National University; Seoul Korea
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Al-Hroub H, Alkhawaja B, Alkhawaja E, Arafat T. Sensitive and rapid HPLC-UV method with back-extraction step for the determination of sildenafil in human plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1009-1010:1-6. [DOI: 10.1016/j.jchromb.2015.11.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2015] [Revised: 11/22/2015] [Accepted: 11/23/2015] [Indexed: 01/05/2023]
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Strach B, Wyska E, Pociecha K, Krupa A, Jachowicz R. Sensitive and precise HPLC method with back-extraction clean-up step for the determination of sildenafil in rat plasma and its application to a pharmacokinetic study. Biomed Chromatogr 2015; 29:1559-66. [PMID: 25864807 DOI: 10.1002/bmc.3459] [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: 07/14/2014] [Revised: 01/05/2015] [Accepted: 02/16/2015] [Indexed: 12/13/2022]
Abstract
A sensitive HPLC method was developed and validated for the determination of sildenafil concentrations in rat plasma (200 μL) using a liquid-liquid extraction procedure and paroxetine as an internal standard. In order to eliminate interferences and improve the peak shape, a back-extraction into an acidic solution was utilized. Chromatographic separation was achieved on a cyanopropyl bonded-phase column with a mobile phase composed of 50 m m potassium dihydrogen phosphate buffer (pH 4.5) and acetonitrile (75:25, v/v), pumped at the flow rate of 1 mL/min. A UV detector was set at 230 nm. A calibration curve was constructed within a concentration range from 10 to 1500 ng/mL. The limit of detection was 5 ng/mL. The inter- and intra-day precisions of the assay were in the ranges 2.91-7.33 and 2.61-6.18%, respectively, and the accuracies for inter- and intra-day runs were within 0.14-3.92 and 0.44-2.96%, respectively. The recovery of sildenafil was 85.22 ± 4.54%. Tests confirmed the stability of sildenafil in plasma during three freeze-thaw cycles and during long-term storage at -20 and -80°C for up to 2 months. The proposed method was successfully applied to a pharmacokinetic study in rats.
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Affiliation(s)
- Beata Strach
- Department of Pharmacokinetics and Physical Pharmacy, Faculty of Pharmacy, Jagiellonian University, Medical College, Cracow, Poland
| | - Elżbieta Wyska
- Department of Pharmacokinetics and Physical Pharmacy, Faculty of Pharmacy, Jagiellonian University, Medical College, Cracow, Poland
| | - Krzysztof Pociecha
- Department of Pharmacokinetics and Physical Pharmacy, Faculty of Pharmacy, Jagiellonian University, Medical College, Cracow, Poland
| | - Anna Krupa
- Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Jagiellonian University, Medical College, Cracow, Poland
| | - Renata Jachowicz
- Department of Pharmaceutical Technology and Biopharmaceutics, Faculty of Pharmacy, Jagiellonian University, Medical College, Cracow, Poland
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Yaroshenko DV, Grigoriev AV, Sidorova AA, Kartsova LA. Chromatographic determination of sildenafil in blood plasma using spectrophotometric and mass-spectrometric detection. JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1134/s1061934813090128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Tripathi A, Sheikh I, Dewani A, Shelke P, Bakal R, Chandewar A, Mazumder P. Development and validation of RP-HPLC method for sildenafil citrate in rat plasma-application to pharmacokinetic studies. Saudi Pharm J 2013; 21:317-21. [PMID: 23960848 PMCID: PMC3745091 DOI: 10.1016/j.jsps.2012.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Accepted: 09/20/2012] [Indexed: 11/26/2022] Open
Abstract
Sildenafil citrate (SIL) is used in the treatment of erectile dysfunction and other chronic disorders. For the pharmacokinetic investigation of SIL we developed a simple and sensitive method for the estimation of SIL in rat plasma by reverse phase high-performance liquid chromatography (RP-HPLC). The drug samples were extracted by liquid-liquid extraction with 300 μl of acetonitrile and 5 ml of diethyl ether. Chromatographic separation was achieved on C18 column using methanol:water (85:15 v/v) as mobile phase at a flow rate of 1 ml/min and UV detection at 230 nm. The retention time of SIL was found to be 4.0 min having a separation time less than 5 min. The developed method was validated for accuracy, precision, linearity and recovery. Linearity studies were found to be acceptable over the range of 0.1-6 μg/ml. The method was successfully applied for the analysis of rat plasma sample for the application in pharmacokinetic study, drug interaction, bioavailability and bioequivalence.
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Affiliation(s)
- A.S. Tripathi
- Department of Pharmacology, P. Wadhwani College of Pharmacy, Yavatmal, Maharashtra 445001, India
| | - I. Sheikh
- Department of Pharmacology, P. Wadhwani College of Pharmacy, Yavatmal, Maharashtra 445001, India
| | - A.P. Dewani
- Department of Quality Assurance, P. Wadhwani College of Pharmacy, Yavatmal, Maharashtra 445001, India
| | - P.G. Shelke
- Department of Pharmaceutical Chemistry, P. Wadhwani College of Pharmacy, Yavatmal, Maharashtra 445001, India
| | - R.L. Bakal
- Department of Quality Assurance, P. Wadhwani College of Pharmacy, Yavatmal, Maharashtra 445001, India
| | - A.V. Chandewar
- Department of Pharmaceutical Chemistry, P. Wadhwani College of Pharmacy, Yavatmal, Maharashtra 445001, India
| | - P.M. Mazumder
- Department of Pharmaceutical Sciences, Birla Institute of Technology, Mesra, Ranchi, Jharkhand 835215, India
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9
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Dżygiel P, Fraier D. Simultaneous Determination of Pregabalin, Sildenafil and Its Active Metabolite in Rat Plasma Utilising SPE Followed by LC–MS–MS. Chromatographia 2011. [DOI: 10.1007/s10337-011-2004-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Cai Y, Cai TG, Shi Y, Cheng XL, Ma LY, Ma SC, Lin RC, Feng W. SIMULTANEOUS DETERMINATION OF EIGHT PDE5-IS POTENTIALLY ADULTERATED IN HERBAL DIETARY SUPPLEMENTS WITH TLC AND HPLC-PDA-MS METHODS. J LIQ CHROMATOGR R T 2010. [DOI: 10.1080/10826076.2010.488979] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Yu Cai
- a School of Pharmacy, Jinan University , Guangzhou, China
| | - Tian-Ge Cai
- b School of Life Science, Liaoning University , Shenyang, China
| | - Yan Shi
- c National Institute for the Control of Pharmaceutical & Biological Products , Beijing, China
| | - Xian-Long Cheng
- c National Institute for the Control of Pharmaceutical & Biological Products , Beijing, China
| | - Ling-Yun Ma
- c National Institute for the Control of Pharmaceutical & Biological Products , Beijing, China
| | - Shuang-Cheng Ma
- c National Institute for the Control of Pharmaceutical & Biological Products , Beijing, China
| | - Rui-Chao Lin
- c National Institute for the Control of Pharmaceutical & Biological Products , Beijing, China
| | - Wei Feng
- c National Institute for the Control of Pharmaceutical & Biological Products , Beijing, China
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Fr. Schröder H, Gebhardt W, Thevis M. Anabolic, doping, and lifestyle drugs, and selected metabolites in wastewater—detection, quantification, and behaviour monitored by high-resolution MS and MS n before and after sewage treatment. Anal Bioanal Chem 2010; 398:1207-29. [DOI: 10.1007/s00216-010-3958-3] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2010] [Revised: 06/19/2010] [Accepted: 06/20/2010] [Indexed: 11/24/2022]
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12
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Vos RM, Chahbouni A, Sinjewel A, Swart EL. Quantitative analysis of sildenafil and desmethylsildenafil in human serum by liquid chromatography–mass spectrometry with minimal sample pretreatment. J Chromatogr B Analyt Technol Biomed Life Sci 2008; 876:283-7. [DOI: 10.1016/j.jchromb.2008.10.052] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2008] [Revised: 09/11/2008] [Accepted: 10/30/2008] [Indexed: 11/25/2022]
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13
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Wang J, Jiang Y, Wang Y, Zhao X, Cui Y, Gu J. Liquid chromatography tandem mass spectrometry assay to determine the pharmacokinetics of aildenafil in human plasma. J Pharm Biomed Anal 2007; 44:231-5. [PMID: 17306493 DOI: 10.1016/j.jpba.2007.01.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2006] [Revised: 01/11/2007] [Accepted: 01/11/2007] [Indexed: 11/26/2022]
Abstract
A simple, sensitive and specific liquid chromatography/tandem mass spectrometry method for the quantitation of aildenafil, a new phosphodiesterase V inhibitor, in human plasma is presented. The analyte and internal standard, sildenafil, were extracted by a one-step liquid-liquid extraction in alkaline conditions and separated on a C(18) column using ammonia:10mM ammonium acetate buffer:methanol (0.1:15:85, v/v/v) as the mobile phase. The detection by an API 4000 triple quadrupole mass spectrometer in multiple-reaction monitoring mode was completed within 2.5 min. The calibration curve exhibited a linear dynamic range of 0.05-100 ng/ml with a 10 pg/ml limit of detection. The intra- and inter-day precisions measured as relative standard deviation were within 8.04% and 5.72%, respectively. This method has been used in a pharmacokinetic study of aildenafil in healthy male volunteers each given an oral administration of one of the three dosages.
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Affiliation(s)
- Jiang Wang
- Research Center for Drug Metabolism, College of Life Science, Jilin University, Changchun 130023, China
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Al-Ghazawi M, Tutunji M, Aburuz S. Simultaneous determination of sildenafil and N-desmethyl sildenafil in human plasma by high-performance liquid chromatography method using electrochemical detection with application to a pharmacokinetic study. J Pharm Biomed Anal 2007; 43:613-8. [PMID: 16920325 DOI: 10.1016/j.jpba.2006.07.028] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2006] [Revised: 07/11/2006] [Accepted: 07/12/2006] [Indexed: 10/24/2022]
Abstract
A method which employed high-performance liquid chromatography coupled with electrochemical detection was developed for the simultaneous determination of sildenafil and its metabolite, N-desmethyl sildenafil, in human plasma has. The method was developed and validated for purposes of its application to a pharmacokinetic study in healthy volunteers after an oral dose of 50mg/tablet under fasting conditions. High precision and accuracy were demonstrated. A one-step liquid-liquid extraction further provides a simple and practical way to process plasma samples containing sildenafil with good quantitative recovery. Sampling lasted for 24h after dosing; consequently a limit of quantitation (LOQ) of 7.858 ng/mL was achieved for sildenafil whereas a LOQ of 8.675 ng/mL was obtained for N-desmethyl sildenafil. The mobile phase consisted of acetonitrile, methanol and phosphate buffer (0.05 M) (18.5:34.5:47.0, v/v/v) pH 7.68. The stationary phase was a C(8) (150 mm x 4.6 mm), 5 microm particle size operated at 27 degrees C. All analytes were stable at the pH of the supernatant, and during the analytical time window. At the applied potential of +1.20 V versus Ag/AgCl, no interferences from endogenous plasma compounds were recorded at the retention times of sildenafil, N-desmethyl sildenafil. High resolution was obtained between the analytes and the employed internal standards.
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Affiliation(s)
- M Al-Ghazawi
- Department of Clinical Pharmacy, Faculty of Pharmacy, The University of Jordan, Amman, Jordan.
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