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Tony RM, El Hamd MA, Gamal M, Saleh SF, Maslamani N, Alsaggaf WT, El-Zeiny MB. Green Bio-Analytical Study of Gabapentin in Human Plasma Coupled with Pharmacokinetic and Bioequivalence Assessment Using UPLC-MS/MS. SEPARATIONS 2023. [DOI: 10.3390/separations10040234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Gabapentin (GAB) is a cyclohexane acetic acid, structurally related to the neurotransmitter gamma-aminobutyric acid (GABA), and considered the principal inhibitory neurotransmitter in the central nervous system (CNS) of mammals. An ultra-performance liquid chromatography–tandem mass spectrophotometry (UPLC-MS/MS) method for assessing pregabalin (PRE) in human plasma, was developed and validated, via PRE usage as an internal standard. The plasma underwent protein precipitation using methanol, prior to analysis. Chromatographic separation was completed using a mobile phase of methanol: 0.1% formic acid solution, (65:35, v/v), at a flow rate of 0.2 mL/min, with an isocratic approach, on an Agilent Eclipse plus column (50 × 2.1 mm and 1.8 μm), in 1.6 min of running time. An Agilent triple quadrupole was used for mass analysis, to detect the ion transitions for GAB and PER, respectively, at m/z of 172.1 → 154.1 and 160.10 → 142.10. The calibration curve, over the linear range of 0.050–10.0 μg/mL, showed a high correlation coefficient, r = 0.9993. The limits of detection and quantitation were 13.37 ng/mL and 40.52 ng/mL, respectively, based on the standard deviation and slope equation. The results for intra- and inter-day measurement accuracy and precision were in acceptable ranges. The method was extended into the assessment of oral administrations of GAB at different doses, of one 600 mg/tablet and two capsules (each one of them has 300 mg of GAB), to volunteers who were used in pharmacokinetics and bioequivalent studies. The AGREE assessment tool was used to visualize the proposed method’s greenness degree, which revealed a high AGREE rating score, supporting the accepted method’s greenness profile.
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Affiliation(s)
- Rehab Moussa Tony
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Modern University for Technology and Information, Cairo 11571, Egypt
| | - Mohamed A. El Hamd
- Department of Pharmaceutical Sciences, College of Pharmacy, Shaqra University, Shaqra 11961, Saudi Arabia
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, South Valley University, Qena 83523, Egypt
| | - Mohammed Gamal
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Beni-Suef University, Alshaheed Shehata Ahmed Hegazy St., Beni-Suef 62574, Egypt
| | - Safaa F. Saleh
- Department Pharmaceutical Chemistry, College of Pharmacy, Jazan University, Jazan 45142, Saudi Arabia
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Fayoum University, Fayoum 63514, Egypt
| | - Nujud Maslamani
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
| | - Wejdan T. Alsaggaf
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21551, Saudi Arabia
| | - Mohamed B. El-Zeiny
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Modern University for Technology and Information, Cairo 11571, Egypt
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A novel biosensor for gabapentin drug detection based on the Pd-decorated aluminum nitride nanotube. Struct Chem 2021. [DOI: 10.1007/s11224-021-01771-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Bargel S, Becam J, Chanu L, Lanot T, Martin M, Vaucel J, Willeman T, Fabresse N. Les gabapentinoïdes : une revue de la littérature. TOXICOLOGIE ANALYTIQUE ET CLINIQUE 2021. [DOI: 10.1016/j.toxac.2020.10.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Valadbeigi Y, Ilbeigi V, Mamozai W, Soleimani M. Rapid and simple determination of gabapentin in urine by ion mobility spectrometry. J Pharm Biomed Anal 2021; 197:113980. [PMID: 33636645 DOI: 10.1016/j.jpba.2021.113980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 02/12/2021] [Accepted: 02/12/2021] [Indexed: 10/22/2022]
Abstract
Gabapentin is a pharmacological agent used in the treatment of epileptic seizures. In this work, a fast method is proposed for determination of gabapentin in urine by ion mobility spectrometry (IMS) without any extraction and derivatization. ZnCl2 was used as an effective protein precipitating reagent to remove the urine proteins. It was found that urea content of urine interferes with detection of gabapentin by IMS. By applying a delay on the carrier gas flow after injection of the sample, we could solve the urea interference to achieve gabapentin signal recovery of ∼70% in urine relative to that in water.
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Affiliation(s)
- Younes Valadbeigi
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran.
| | - Vahideh Ilbeigi
- TOF Tech. Pars Company, Isfahan Science & Technology Town, Isfahan, Iran
| | - Wafiullah Mamozai
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
| | - Majid Soleimani
- Department of Chemistry, Faculty of Science, Imam Khomeini International University, Qazvin, Iran
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Adegoke OA, Adegbolagun OM, Aiyenale EO, Thomas OE. New spectrophotometric method for the determination of gabapentin in bulk and dosage forms using p-dimethylaminobenzaldehyde. JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE 2018. [DOI: 10.1080/16583655.2018.1495418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Olajire A. Adegoke
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Olayemi M. Adegbolagun
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Elizabeth O. Aiyenale
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria
| | - Olusegun E. Thomas
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria
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Nahar L, Smith A, Patel R, Andrews R, Paterson S. Validated Method for the Screening and Quantification of Baclofen, Gabapentin and Pregabalin in Human Post-Mortem Whole Blood Using Protein Precipitation and Liquid Chromatography–Tandem Mass Spectrometry. J Anal Toxicol 2017; 41:441-450. [DOI: 10.1093/jat/bkx019] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Indexed: 11/13/2022] Open
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Ragham PK, Chandrasekhar KB. Development and validation of a stability-indicating RP-HPL C-CAD method for gabapentin and its related impurities in presence of degradation products. J Pharm Biomed Anal 2016; 125:122-9. [DOI: 10.1016/j.jpba.2016.03.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 03/14/2016] [Accepted: 03/16/2016] [Indexed: 11/28/2022]
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Toh DSL, Limenta LMG, Yee JY, Wang LZ, Goh BC, Murray M, Lee EJD. Effect of mushroom diet on pharmacokinetics of gabapentin in healthy Chinese subjects. Br J Clin Pharmacol 2015; 78:129-34. [PMID: 24168107 DOI: 10.1111/bcp.12273] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2013] [Accepted: 10/21/2013] [Indexed: 10/26/2022] Open
Abstract
AIMS This study evaluated the pharmacokinetics of gabapentin in Chinese subjects who received a diet rich in shiitake mushrooms. Shiitake mushrooms have been shown to contain high amount of ergothioneine. In vitro studies have shown that OCTN1-mediated secretion of gabapentin is trans-stimulated by ergothioneine. This study also investigated the concentrations of ergothioneine in plasma at baseline and following mushroom consumption. METHODS Ten healthy male subjects were recruited and received a diet containing no mushrooms (treatment A) or a high mushroom diet (treatment B; after at least a 7 day washout period) 1 day prior to administration of a single oral dose of gabapentin 600 mg. RESULTS Ingestion of shiitake mushrooms produced significant increases in plasma ergothioneine concentrations that were sustained for more than 48 h. A statistically significant but modest increase in the renal clearance (CLR ) of gabapentin occurred after intake of the mushroom diet (91.1 ± 25.1 vs. 76.9 ± 20.6 ml min(-1) , P = 0.031). No significant changes in AUC(0,tlast ) of gabapentin were observed (P = 0.726). Creatinine clearance did not correlate with CLR of gabapentin at baseline (treatment A). After ingestion of the mushroom diet, creatinine clearance accounted for 65.3% of the variance in CLR of gabapentin. CONCLUSIONS These data suggest that diet-drug pharmacokinetic interactions may occur during co-exposure to gabapentin and mushroom constituents. However, as it does not affect the AUC(0,tlast ) of gabapentin, it may not have clinically important consequences. Shiitake mushrooms can also be used as a source of ergothioneine for future clinical studies.
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Affiliation(s)
- Dorothy Su Lin Toh
- Faculty of Pharmacy, University of Sydney, Sydney, NSW, 2006, Australia; Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Lin X, Cai Y, Yan J, Zhang L, Wu D, Li H. Determination of Gabapentin in Human Plasma and Urine by Capillary Electrophoresis with Laser-Induced Fluorescence Detection. J Chromatogr Sci 2014; 53:986-92. [DOI: 10.1093/chromsci/bmu134] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Indexed: 11/12/2022]
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Tjandrawinata RR, Setiawati E, Putri RSI, Yunaidi DA, Amalia F, Susanto LW. Single dose pharmacokinetic equivalence study of two gabapentin preparations in healthy subjects. DRUG DESIGN DEVELOPMENT AND THERAPY 2014; 8:1249-55. [PMID: 25214768 PMCID: PMC4159312 DOI: 10.2147/dddt.s69326] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND The current study was conducted to find out whether two oral preparations of 300 mg gabapentin (the test and reference capsules) were bioequivalent. SUBJECTS AND METHODS This was a randomized, single-blind, crossover study under fasting condition, with a 7-day washout period, which included 37 healthy adult male and female subjects. After an overnight fast, subjects were given, orally, one capsule of the test drug or of the reference drug. Blood samples were drawn immediately before taking the drug, then at 20 and 40 minutes, and 1, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 12, 15, and 24 hours after dosing, to evaluate pharmacokinetic parameters of the single dose administration, ie, the area under the plasma concentration-time curve (AUC) from time zero to 24 hours (AUCt), AUC from time zero to infinity (AUC(inf)), the peak plasma concentration of the drug (Cmax), time needed to achieve Cmax (tmax), and the elimination half-life (t1/2). The plasma concentrations of gabapentin were determined using validated high-performance liquid chromatography with ultraviolet detection. RESULTS The geometric mean ratios (90% confidence interval) of the test drug/reference drug for gabapentin were 103.15% (90.38%-117.72%) for AUCt, 103.53% (90.78%-118.07%) for AUC(inf), and 108.06% (96.32%-121.24%) for Cmax. The differences in tmax and t1/2 values between the test and reference drug products for gabapentin were not statistically significant. Light-headedness, nausea, and headache were encountered during the study, but they were all mild and well tolerated. The 90% confidence intervals of the test/reference AUC ratio and Cmax ratio of gabapentin were within the acceptance range for bioequivalence. CONCLUSION The two preparations of gabapentin 300 mg capsule were bioequivalent, thus both can be used interchangeably in the clinical setting.
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Affiliation(s)
| | - Effi Setiawati
- PT Equilab International, Bioavailability and Bioequivalence Laboratory, Jakarta, Indonesia
| | - Ratih Sofia Ika Putri
- PT Equilab International, Bioavailability and Bioequivalence Laboratory, Jakarta, Indonesia
| | - Danang Agung Yunaidi
- PT Equilab International, Bioavailability and Bioequivalence Laboratory, Jakarta, Indonesia
| | - Fawzia Amalia
- PT Equilab International, Bioavailability and Bioequivalence Laboratory, Jakarta, Indonesia
| | - Liana W Susanto
- Dexa Laboratories of Biomolecular Sciences, Cikarang, Indonesia
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Martinc B, Roškar R, Grabnar I, Vovk T. Simultaneous determination of gabapentin, pregabalin, vigabatrin, and topiramate in plasma by HPLC with fluorescence detection. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 962:82-88. [DOI: 10.1016/j.jchromb.2014.05.030] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 05/06/2014] [Accepted: 05/16/2014] [Indexed: 10/25/2022]
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Gabapentin in acute postoperative pain management. BIOMED RESEARCH INTERNATIONAL 2014; 2014:631756. [PMID: 24829909 PMCID: PMC4009126 DOI: 10.1155/2014/631756] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 03/27/2014] [Accepted: 03/30/2014] [Indexed: 01/04/2023]
Abstract
Gabapentin (1-aminomethyl-cyclohexaneacetic acid) is an amino acid that has the structure of the neurotransmitter γ-aminobutyric acid (GABA). It is a novel drug used for the treatment of postoperative pain with antihyperalgesic properties and a unique mechanism of action. Gabapentin and the related, more potent compound pregabalin have been shown to be beneficial in the treatment of neuropathic pain as well as postoperative pain following spinal surgery and hysterectomy. This study reviews five aspects of gabapentin: (1) chemical and structural characteristics; (2) pharmacokinetics and pharmacodynamics; (3) application in acute pain management; (4) adverse effects; and (5) drug safety. Overall, gabapentin has been reported to be a safe and efficacious drug for the treatment of postoperative pain.
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Nonoda Y, Iwasaki T, Ishii M. The efficacy of gabapentin in children of partial seizures and the blood levels. Brain Dev 2014; 36:194-202. [PMID: 23647918 DOI: 10.1016/j.braindev.2013.04.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2012] [Revised: 03/26/2013] [Accepted: 04/06/2013] [Indexed: 01/27/2023]
Abstract
AIM To evaluate the long-term efficacy of gabapentin (GBP) and usefulness of measurement of the blood level for the observation of patients that have partial seizures. METHODS Thirty patients (20 effective cases and 10 ineffective cases) treated with GBP for the localization related epilepsy had their peak blood levels of GBP. The levels were measured seven time points, one, 6, 12, 18, 24, 30, and 36month after the start of medication. The efficacy of GBP was evaluated at one month after the initiation of medication and every year for 3years, based on the R Ratio and the degree of improvement for the paroxysmal strength and length. RESULTS GBP levels were higher in the effective cases than the levels in the ineffective cases 6months after and 1year after the initiation of medication (p<0.05). The level 6months after the start in the effective cases was 5.429±2.384μg/ml (mean±SD), and 5.837±3.217μg/ml after 1year. The cases that were effective for 1year maintained approximately the same efficacy for 3years after the initiation of medication, but there was no correlation between the level and the R Ratio, paroxysmal strength and length. CONCLUSIONS No precise definition of the therapeutic range was recognized because of no correlation between GBP level and the improvement of clinical manifestations. We recommend the GBP optimal range that is established the range within 3-8μg/ml (mean; 5μg/ml) as therapeutic target without the side effect.
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Affiliation(s)
- Yutaka Nonoda
- Department of Pediatrics, Kitasato University School of Medicine, Kanagawa, Japan
| | - Toshiyuki Iwasaki
- Department of Pediatrics, Kitasato University School of Medicine, Kanagawa, Japan.
| | - Masahiro Ishii
- Department of Pediatrics, Kitasato University School of Medicine, Kanagawa, Japan
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Evaluation of two modified quick, easy, cheap, effective, rugged and safe (QuEChERS) sample preparation methods for the analysis of baclofen and gabapentin in feeds by liquid chromatography tandem mass spectrometry. J Pharm Biomed Anal 2014; 88:53-9. [DOI: 10.1016/j.jpba.2013.08.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 08/07/2013] [Accepted: 08/13/2013] [Indexed: 11/21/2022]
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Cao LW, Hu Y, Liang SL, Li C, Meng JX. Sensitive and efficient determination of gabapentin in human serum based on capillary electrophoresis with laser-induced fluorescence detection. JOURNAL OF ANALYTICAL CHEMISTRY 2013. [DOI: 10.1134/s1061934813070071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yari A, Papi F, Farhadi S. Voltammetric Determination of Trace Antiepileptic Gabapentin with a Silver-Nanoparticle Modified Multiwalled Carbon Nanotube Paste Electrode. ELECTROANAL 2011. [DOI: 10.1002/elan.201100454] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Jia S, Park JH, Lee J, Kwon SW. Comparison of two aerosol-based detectors for the analysis of gabapentin in pharmaceutical formulations by hydrophilic interaction chromatography. Talanta 2011; 85:2301-6. [DOI: 10.1016/j.talanta.2011.04.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Revised: 04/03/2011] [Accepted: 04/05/2011] [Indexed: 11/30/2022]
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Kang J, Park YS, Kim SH, Kim SH, Jun MY. Modern methods for analysis of antiepileptic drugs in the biological fluids for pharmacokinetics, bioequivalence and therapeutic drug monitoring. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2011; 15:67-81. [PMID: 21660146 DOI: 10.4196/kjpp.2011.15.2.67] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 04/10/2011] [Accepted: 04/15/2011] [Indexed: 12/20/2022]
Abstract
Epilepsy is a chronic disease occurring in approximately 1.0% of the world's population. About 30% of the epileptic patients treated with availably antiepileptic drugs (AEDs) continue to have seizures and are considered therapy-resistant or refractory patients. The ultimate goal for the use of AEDs is complete cessation of seizures without side effects. Because of a narrow therapeutic index of AEDs, a complete understanding of its clinical pharmacokinetics is essential for understanding of the pharmacodynamics of these drugs. These drug concentrations in biological fluids serve as surrogate markers and can be used to guide or target drug dosing. Because early studies demonstrated clinical and/or electroencephalographic correlations with serum concentrations of several AEDs, It has been almost 50 years since clinicians started using plasma concentrations of AEDs to optimize pharmacotherapy in patients with epilepsy. Therefore, validated analytical method for concentrations of AEDs in biological fluids is a necessity in order to explore pharmacokinetics, bioequivalence and TDM in various clinical situations. There are hundreds of published articles on the analysis of specific AEDs by a wide variety of analytical methods in biological samples have appears over the past decade. This review intends to provide an updated, concise overview on the modern method development for monitoring AEDs for pharmacokinetic studies, bioequivalence and therapeutic drug monitoring.
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Affiliation(s)
- Juseop Kang
- Pharmacology & Clinical Pharmacology Lab, College of Medicine, Hanyang University, Seoul 133-791, Korea
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Abdulrahman SAM, Basavaiah K. Sensitive and selective spectrophotometric assay of gabapentin in capsules using sodium 1, 2-naphthoquinone-4-sulfonate. Drug Test Anal 2011; 3:748-54. [DOI: 10.1002/dta.242] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 11/08/2010] [Accepted: 11/09/2010] [Indexed: 11/07/2022]
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Yagi T, Naito T, Mino Y, Takashina Y, Umemura K, Kawakami J. Rapid and validated fluorometric HPLC method for determination of gabapentin in human plasma and urine for clinical application. J Clin Pharm Ther 2011; 37:89-94. [DOI: 10.1111/j.1365-2710.2010.01243.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mandrioli R, Musenga A, Kenndler E, De Donno M, Amore M, Raggi MA. Determination of topiramate in human plasma by capillary electrophoresis with indirect UV detection. J Pharm Biomed Anal 2010; 53:1319-23. [DOI: 10.1016/j.jpba.2010.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2009] [Revised: 03/02/2010] [Accepted: 03/04/2010] [Indexed: 10/19/2022]
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Cao LW, Hu Y, Meng JX, Li C. SENSITIVE DETERMINATION OF GABAPENTIN IN HUMAN URINE BY HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY WITH UV–VIS AND FLUORESCENT DETECTION. J LIQ CHROMATOGR R T 2010. [DOI: 10.1080/10826076.2010.489018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Li-Wei Cao
- a Department of Chemistry , Jinan University , Guangzhou, People's Republic of China
| | - Yang Hu
- a Department of Chemistry , Jinan University , Guangzhou, People's Republic of China
| | - Jian-Xin Meng
- a Department of Chemistry , Jinan University , Guangzhou, People's Republic of China
| | - Cong Li
- a Department of Chemistry , Jinan University , Guangzhou, People's Republic of China
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Simultaneous HPLC-F analysis of three recent antiepileptic drugs in human plasma. J Pharm Biomed Anal 2010; 53:62-7. [DOI: 10.1016/j.jpba.2010.02.036] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Revised: 02/23/2010] [Accepted: 02/24/2010] [Indexed: 11/22/2022]
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Kolocouri F, Dotsikas Y, Loukas YL. Dried plasma spots as an alternative sample collection technique for the quantitative LC-MS/MS determination of gabapentin. Anal Bioanal Chem 2010; 398:1339-47. [DOI: 10.1007/s00216-010-4048-2] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2010] [Revised: 07/18/2010] [Accepted: 07/19/2010] [Indexed: 11/29/2022]
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Zand L, McKian KP, Qian Q. Gabapentin toxicity in patients with chronic kidney disease: a preventable cause of morbidity. Am J Med 2010; 123:367-73. [PMID: 20362757 DOI: 10.1016/j.amjmed.2009.09.030] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2009] [Revised: 09/09/2009] [Accepted: 09/10/2009] [Indexed: 12/01/2022]
Abstract
BACKGROUND Gabapentin is frequently used as an analgesic in patients with chronic kidney disease. Although gabapentin is well known for its favorable pharmacokinetics, it is exclusively eliminated renally, and patients with chronic kidney disease are at risk for toxicity. Existing literature on such risk is lacking. METHODS We examined the Mayo Clinic Rochester database from 1998 to 2007 in patients with serum gabapentin measurements and known medical outcomes. A total of 729 patients were stratified according to their estimated glomerular filtration rate: group I, 126 individuals with estimated glomerular filtration greater than 90 mL/min/1.72 mm(2) [corrected] ; group II, 594 individuals with estimated glomerular filtration less than 90 mL/min/1.72 mm(2) [corrected] without dialysis; group III, 9 individuals with chronic dialysis. RESULTS Patients in groups II and III had higher serum gabapentin levels (8.39+/-0.32 microL/mL and 58.8+/-10.22 microL/mL, respectively) than in group I (5.52+/-0.32 microL/mL, P<.01). Toxicity occurred exclusively in groups II (5.56%) and III (77.8%); toxic manifestations were more severe in group III than in group II. Elderly individuals with multiple comorbidities were overrepresented in those with toxic manifestations. Gabapentin toxicity was suspected initially in only 41.5% of symptomatic cases. CONCLUSION Gabapentin toxicity in patients with chronic kidney disease is underrecognized. Patients with chronic kidney disease often receive inappropriately high gabapentin dosage for their kidney function, occasioning overt toxicity; advanced age and comorbidity predispose these patients for toxicity. Heightened awareness of such preventable risk, amid the chronic kidney disease epidemic, would be cost-effective and improve healthcare quality.
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Affiliation(s)
- Ladan Zand
- Department of Medicine, Mayo Clinic College of Medicine, Rochester, MN, USA
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Ebrahimzadeh H, Yamini Y, Firozjaei HA, Kamarei F, Tavassoli N, Rouini MR. Hollow fiber-based liquid phase microextraction combined with high-performance liquid chromatography for the analysis of gabapentin in biological samples. Anal Chim Acta 2010; 665:221-6. [PMID: 20417334 DOI: 10.1016/j.aca.2010.03.028] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Revised: 03/13/2010] [Accepted: 03/16/2010] [Indexed: 11/28/2022]
Abstract
Three-phase hollow fiber microextraction technique combined with high performance liquid chromatography-ultra violet (HPLC-UV) was applied for the extraction and determination of gabapentin in biological fluids. Gabapentin (GBP) was derivatized with 1-fluoro-2,4-dinitrobenzene, as a UV absorbent agent in borate buffer (pH 8.2) before extraction. The derivative product of GBP was extracted from the 8.5 mL of acidic solution (source phase) into an organic phase (dihexyl ether) impregnated in the pores of a hollow fiber and finally back-extracted into 24 microL of the basic solution (pH 9.1) located inside the lumen of the hollow fiber (receiving phase). The extraction took place due to pH gradient between the inside and outside of the hollow fiber membrane. In order to achieve maximum extraction efficiency, different parameters affecting the extraction conditions were optimized. Under the optimized conditions, preconcentration factor of 95 and detection limit (LOD) of 0.2 microg L(-1) were obtained. The calibration graph was linear within the range of 0.6-5000 microg L(-1). Finally, the feasibility of the proposed method was successfully confirmed by extraction and determination of GBP in human urine and plasma samples in the range of microgram per liter and suitable results were obtained (RSDs<6.3%).
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Themelis DG, Tzanavaras PD, Boulimari EA. Generic Automated Fluorimetric Assay for the Quality Control of Gamma Aminobutyric Acid-Analogue Anti-Epileptic Drugs Using Sequential Injection. ANAL LETT 2010. [DOI: 10.1080/00032710903491146] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Oertel R, Arenz N, Pietsch J, Kirch W. Simultaneous determination of three anticon-vulsants using hydrophilic interaction LC-MS. J Sep Sci 2008; 32:238-43. [DOI: 10.1002/jssc.200800461] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Jalalizadeh H, Souri E, Tehrani MB, Jahangiri A. Validated HPLC method for the determination of gabapentin in human plasma using pre-column derivatization with 1-fluoro-2,4-dinitrobenzene and its application to a pharmacokinetic study. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 854:43-7. [PMID: 17517538 DOI: 10.1016/j.jchromb.2007.03.039] [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: 12/03/2006] [Revised: 03/06/2007] [Accepted: 03/26/2007] [Indexed: 11/20/2022]
Abstract
A rapid, sensitive and accurate high-performance liquid chromatographic method with UV detection was developed and validated for the quantification of gabapentin in human plasma. Gabapentin was quantified using pre-column derivatization with 1-fluoro-2,4-dinitrobenzene following protein precipitation of plasma with acetonitrile. Amlodipine was used as internal standard. The chromatographic separation was carried out on a Nova-Pak C(18) column using a mixture of 50 mM NaH(2)PO(4) (pH=2.5)-acetonitrile (30:70, v/v) as mobile phase with UV detection at 360 nm. The flow rate was set at 1.5 ml/min. The method was linear over the range of 0.05-5 microg/ml of gabapentin in plasma (r(2)>0.999). The within-day and between-day precision values were in the range of 2-5%. The limit of quantification of the method was 0.05 microg/ml. The method was successfully used to study the pharmacokinetics of gabapentin in healthy volunteers.
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Affiliation(s)
- Hassan Jalalizadeh
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran 14155-6451, Iran
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Souri E, Jalalizadeh H, Shafiee A. Optimization of an HPLC Method for Determination of Gabapentin in Dosage Forms through Derivatization with 1-Fluoro-2,4-dinitrobenzene. Chem Pharm Bull (Tokyo) 2007; 55:1427-30. [DOI: 10.1248/cpb.55.1427] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Effat Souri
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Medical Sciences/University of Tehran
| | - Hassan Jalalizadeh
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Medical Sciences/University of Tehran
| | - Abbas Shafiee
- Department of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Medical Sciences/University of Tehran
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