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Karthikeyan M, Dhinesh Kumar M, Kaniraja G, Karunakaran C. Theoretical investigations of free energy of binding and chiral recognition studies of (R)- and (S)-Noradrenaline towards β-cyclodextrin. J Mol Graph Model 2023; 124:108552. [PMID: 37379759 DOI: 10.1016/j.jmgm.2023.108552] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/08/2023] [Accepted: 06/13/2023] [Indexed: 06/30/2023]
Abstract
Noradrenaline (NA), one of the important excitatory catecholamine neurotransmitters, is used as a medication for Parkinson's Disease (PD). The β-cyclodextrin (β-CD) is one of the most effective drug carrier & also used in chiral separation. So, in this theoretical investigation, the R/S-Noradrenaline (R/S-NA) forms binding & chiral recognition mechanisms and energies with β-CD were explored. Using the AutoDock, R/S forms were first docked into the cavity of β-CD giving host-guest complexes with the free energy of binding for S-NA (-4.81 kcal/mol) larger than R-NA (-4.53 kcal/mol). The host-guest inclusion 1:1 complexes between R/S-NA and β-CD have been also modeled and optimized with ONIOM2 (B3LYP/6-31g++DP: PM6) method by using the Gaussian software. Further, frequency calculations were carried out to obtain the free energies. In comparison to the R-NA (-54.59 kcal/mol), it was observed that the S-NA (-56.48 kcal/mol) with β-CD is more stable. Furthermore, the H-bond results from molecular dynamics simulation revealed that S-NA/β-CD was more stable than R-NA/β-CD. In addition, the thermodynamic properties, vibrational analysis (IR), HOMO-LUMO band gap energy, inter molecular hydrogen bond interactions, and conformational analysis were investigated for both the R/S forms to support & compare the stability of the inclusion complex. These inclusion & high stability of S-NA/β-CD and in turn its theoretical chiral recognition behavior observed agreeing well with the reported NMR experimental data have implications in drug delivery and chiral separation research.
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Affiliation(s)
- Murugesan Karthikeyan
- Biomedical Research Laboratory, Department of Chemistry, Virudhunagar Hindu Nadars' Senthikumara Nadar College (Autonomous & Affiliated to Madurai Kamaraj University), Virudhunagar- 626 001, Tamil Nadu, India
| | - Marimuthu Dhinesh Kumar
- Biomedical Research Laboratory, Department of Chemistry, Virudhunagar Hindu Nadars' Senthikumara Nadar College (Autonomous & Affiliated to Madurai Kamaraj University), Virudhunagar- 626 001, Tamil Nadu, India
| | - Ganesan Kaniraja
- Biomedical Research Laboratory, Department of Chemistry, Virudhunagar Hindu Nadars' Senthikumara Nadar College (Autonomous & Affiliated to Madurai Kamaraj University), Virudhunagar- 626 001, Tamil Nadu, India
| | - Chandran Karunakaran
- Biomedical Research Laboratory, Department of Chemistry, Virudhunagar Hindu Nadars' Senthikumara Nadar College (Autonomous & Affiliated to Madurai Kamaraj University), Virudhunagar- 626 001, Tamil Nadu, India.
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Derakhshan S, Panahi HA, Nikpour Nezhati M. Preparation and application of novel thermo-sensitive molecularly imprinted polymer for selective extraction of omeprazole from pharmaceutical formulation and biological fluids. SEP SCI TECHNOL 2023. [DOI: 10.1080/01496395.2023.2197552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Affiliation(s)
- Setareh Derakhshan
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Homayon Ahmad Panahi
- Department of Chemistry, Central Tehran Branch, Islamic Azad University, Tehran, Iran
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Determination and Pharmacokinetics of Omeprazole Enantiomers in Human Plasma and Oral Fluid Utilizing Microextraction by Packed Sorbent and Liquid Chromatography-Tandem Mass Spectrometry. Int J Anal Chem 2021; 2021:8845139. [PMID: 33531903 PMCID: PMC7837791 DOI: 10.1155/2021/8845139] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 12/05/2020] [Accepted: 01/07/2021] [Indexed: 01/03/2023] Open
Abstract
In the present work, the determination of omeprazole (OME) enantiomers in oral fluid and plasma samples was carried out utilizing microextraction by packed sorbent (MEPS) and liquid chromatography-tandem mass spectrometry. A chiral column with cellulose-SB phase was used for the first time for enantiomeric separation of OME with an isocratic elution system using 0.2% ammonium hydroxide in hexane-ethanol mixture (70 : 30, v/v) as the mobile phase. OME enantiomers were determined utilizing a triple quadrupole tandem mass spectrometer in positive ion mode (ESI+) monitoring mass transitions: m/z 346.3 ⟶ 198.0 for OME and m/z 369.98 ⟶ 252.0 for internal standard. The limits of detection and quantification of the present method for both enantiomers were 0.1 and 0.4 ng/mL, respectively. The method validation provided good accuracy and precision. The matrix effect factor was less than 5%, and no interfering peaks were observed. The interday precision values ranged from 2.2 to 7.5 (%RSD), and the accuracy of determinations varied from −9.9% to 8.3%. In addition, the pharmacokinetics (PK) of omeprazole enantiomers in healthy subjects after a single oral dose was investigated. (S)-Enantiomers showed higher levels than (R)-enantiomers throughout 24 h. It was found that the mean maximum concentrations of (R)- and (S)-omeprazole in plasma samples were about two times higher than in oral fluid.
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Sun L, Zhang Y, Yang Y, Shen Y, Ying Y, Su Y, Zhang X, Liu Y, Huang X, Wang Y. Simultaneous enantioselective determination of omeprazole, rabeprazole, lansoprazole, and pantoprazole enantiomers in human plasma by chiral liquid chromatography–tandem mass spectrometry. J Sep Sci 2020; 43:3183-3196. [PMID: 32495501 DOI: 10.1002/jssc.202000226] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/29/2020] [Accepted: 05/30/2020] [Indexed: 12/31/2022]
Affiliation(s)
- Lu‐Ning Sun
- Research Division of Clinical PharmacologyFirst Affiliated Hospital of Nanjing Medical University Nanjing P. R. China
| | - Ye Zhang
- Department of PharmacyNanjing Jinling Hospital Nanjing P. R. China
| | - Yu‐Qing Yang
- Research Division of Clinical PharmacologyFirst Affiliated Hospital of Nanjing Medical University Nanjing P. R. China
| | - Ye Shen
- Research Division of Clinical PharmacologyFirst Affiliated Hospital of Nanjing Medical University Nanjing P. R. China
| | - Yu‐Wen Ying
- Research Division of Clinical PharmacologyFirst Affiliated Hospital of Nanjing Medical University Nanjing P. R. China
| | - Yu‐Wen Su
- School of PharmacyNanjing Medical University Nanjing P. R. China
| | - Xue‐Hui Zhang
- Department of PharmacyJiangsu Shengze Hospital Suzhou P. R. China
| | - Yun Liu
- Research Division of Clinical PharmacologyFirst Affiliated Hospital of Nanjing Medical University Nanjing P. R. China
| | - Xu Huang
- Research Division of Clinical PharmacologyFirst Affiliated Hospital of Nanjing Medical University Nanjing P. R. China
| | - Yong‐Qing Wang
- Research Division of Clinical PharmacologyFirst Affiliated Hospital of Nanjing Medical University Nanjing P. R. China
- Department of PharmacyJiangsu Shengze Hospital Suzhou P. R. China
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Ivansyah AL, Martoprawiro M, Buchari. Computational modeling of inclusion complex of r/s-omeprazole with β-cyclodextrin using oniom2 method. ACTA ACUST UNITED AC 2017. [DOI: 10.1088/1742-6596/812/1/012070] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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6
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El-Kommos ME, Khashaba PY, Ali HRH, El-Wekil MM. Different Chromatographic and Electrophoretic Methods for Analysis of Proton Pump Inhibitors (PPIs): A Review. J LIQ CHROMATOGR R T 2015. [DOI: 10.1080/10826076.2015.1079722] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Michael E. El-Kommos
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Pakinaz Y. Khashaba
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Hassan Refat H. Ali
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
| | - Mohamed M. El-Wekil
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Assiut University, Assiut, Egypt
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Nevado JJB, Peñalvo GC, Dorado RMR, Robledo VR. Simultaneous determination of omeprazole and their main metabolites in human urine samples by capillary electrophoresis using electrospray ionization-mass spectrometry detection. J Pharm Biomed Anal 2014; 92:211-9. [PMID: 24530982 DOI: 10.1016/j.jpba.2013.12.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Revised: 12/13/2013] [Accepted: 12/18/2013] [Indexed: 11/17/2022]
Abstract
We report a novel method for the simultaneous determination of omeprazole and their main metabolites (omeprazole sulphide, omeprazole sulphone and 5-hydroxy omeprazole) in human urine samples. For this purpose, two new capillary electrophoresis (CE) methods were developed for the simultaneous determination of target compounds, using initially diode-array for optical detection and electrospray ionization-mass spectrometry (ESI-MS) for metabolites identification and identity confirmation. A new metabolite (5-hydroxysulphide omeprazole) was identified by electrospray ionization multi-stage mass spectrometry (ESI-MS2) fragment which was then used to support the proposed chemical structure. Pharmacokinetic results using CE method were compared with those obtained when a HPLC method was used. Equivalent pharmacokinetics profiles resulted when any analytical methods were carried out.
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Affiliation(s)
- Juan José Berzas Nevado
- Department of Analytical Chemistry and Food Technology, Faculty of Chemistry, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Gregorio Castañeda Peñalvo
- Department of Analytical Chemistry and Food Technology, Faculty of Chemistry, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Rosa María Rodríguez Dorado
- Department of Analytical Chemistry and Food Technology, Faculty of Chemistry, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Virginia Rodríguez Robledo
- Department of Analytical Chemistry and Food Technology, Faculty of Pharmacy University of Castilla-La Mancha, Albacete, Spain.
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8
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Lipka E, Charton J, Vaccher C. Development of HPLC/fluorescence detection method for chiral resolution of dansylated benzimidazoles derivatives. Biomed Chromatogr 2013; 28:4-9. [DOI: 10.1002/bmc.2992] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Revised: 06/05/2013] [Accepted: 06/05/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Emmanuelle Lipka
- EA 4481, Faculté des Sciences Pharmaceutiques et Biologiques; BP 83 Lille Cedex France
| | - Julie Charton
- INSERM U761 Biostructures and Early Drug Discovery, Lille Pasteur Institute; Université Lille Nord de France; Lille F-59000 France
| | - Claude Vaccher
- EA 4481, Faculté des Sciences Pharmaceutiques et Biologiques; BP 83 Lille Cedex France
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9
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Chankvetadze B. Recent developments on polysaccharide-based chiral stationary phases for liquid-phase separation of enantiomers. J Chromatogr A 2012; 1269:26-51. [DOI: 10.1016/j.chroma.2012.10.033] [Citation(s) in RCA: 329] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 10/11/2012] [Accepted: 10/15/2012] [Indexed: 10/27/2022]
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10
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Ahmad L, Iqbal Z, Nazir S, Shah Y, Khan A, Khan MI, Nasir F, Khan A. OPTIMIZATION AND VALIDATION OF HPLC-UV METHOD FOR SIMULTANEOUS DETERMINATION OF OMEPRAZOLE AND ITS METABOLITES IN HUMAN PLASMA: EFFECTS OF VARIOUS EXPERIMENTAL CONDITIONS AND PARAMETERS. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.569807] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Lateef Ahmad
- a Department of Pharmacy , University of Peshawar , Peshawar, Pakistan
| | - Zafar Iqbal
- a Department of Pharmacy , University of Peshawar , Peshawar, Pakistan
| | - Shabnam Nazir
- a Department of Pharmacy , University of Peshawar , Peshawar, Pakistan
| | - Yasar Shah
- a Department of Pharmacy , University of Peshawar , Peshawar, Pakistan
| | - Abad Khan
- a Department of Pharmacy , University of Peshawar , Peshawar, Pakistan
| | - Muhammad I. Khan
- a Department of Pharmacy , University of Peshawar , Peshawar, Pakistan
| | - Fazli Nasir
- a Department of Pharmacy , University of Peshawar , Peshawar, Pakistan
| | - Abbas Khan
- a Department of Pharmacy , University of Peshawar , Peshawar, Pakistan
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11
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Shiohira H, Yasui-Furukori N, Tateishi T, Uno T. Chiral assay of omeprazole and metabolites and its application to a pharmacokinetics related to CYP2C19 genotypes. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:2465-70. [DOI: 10.1016/j.jchromb.2011.06.046] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 06/28/2011] [Accepted: 06/29/2011] [Indexed: 11/15/2022]
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12
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Al-Badr AA. Omeprazole. PROFILES OF DRUG SUBSTANCES, EXCIPIENTS, AND RELATED METHODOLOGY 2010; 35:151-262. [PMID: 22469222 DOI: 10.1016/s1871-5125(10)35004-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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13
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De Smet J, Boussery K, De Cock P, De Paepe P, Remon JP, Van Winckel M, Van Bocxlaer J. A bio-analytical hydrophilic interaction LC-MS/MS method for the simultaneous quantification of omeprazole and lansoprazole in human plasma in support of a pharmacokinetic omeprazole study in children. J Sep Sci 2010; 33:939-47. [DOI: 10.1002/jssc.200900590] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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Guan J, Li J, Yan F, Gu H, Li F. Chiral Separation of Tenatoprazole and Several Related Benzimidazoles by Normal Phase LC Using Amylose-Based Stationary Phase. Chromatographia 2009. [DOI: 10.1365/s10337-009-1296-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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15
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Lipka E, Charton J, Vaccher MP, Folly-Klan M, Bonte JP, Vaccher C. Enantioseparation of chiral benzimidazole derivatives by electrokinetic chromatography using sulfated cyclodextrins. J Sep Sci 2009; 32:1907-15. [DOI: 10.1002/jssc.200800713] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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16
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Rambla-Alegre M, Esteve-Romero J, Carda-Broch S. Analysis of omeprazole and its main metabolites by liquid chromatography using hybrid micellar mobile phases. Anal Chim Acta 2009; 633:250-6. [DOI: 10.1016/j.aca.2008.11.059] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2008] [Revised: 10/06/2008] [Accepted: 11/21/2008] [Indexed: 10/21/2022]
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Abstract
CYP2C19 is a drug-metabolising enzyme involved in the metabolism of a number of chemotherapeutic agents including cyclophosphamide. Variants of the CYP2C19 gene result in a loss of function polymorphism, which affects approximately 3% of the Caucasian population. These individuals are poor metabolisers (PM) of a wide range of medications including omeprazole (OMP). In healthy subjects PM can be identified through homozygous variant genotype. However, a discordance between CYP2C19 genotype and phenotype has been reported previously in a small study of cancer patients. To investigate whether CYP2C19 activity was decreased in patients with advanced cancer, CYP2C19 genotype was determined in 33 advanced cancer patients using PCR-RFLP analysis for the two important allelic variants (*2,681G>A and *3,636G>A) and the activity of the enzyme was evaluated using the CYP2C19 probe drug OMP. The activity of the drug-metabolising enzyme CYP2C19 was severely compromised in advanced cancer patients, resulting in a PM status in 37% of the patients who had normal genotype. This is significantly (P<0.0005) higher than that would be predicted from the genotypic status of these patients. There was no evidence of a correlation between compromised CYP2C19 activity and any of the proinflammatory cytokines or acute phase response proteins studied. However, there was preliminary evidence of an association between PM status and low body mass (P=0.03). There is increasing interest in using pharmacogenetics to 'individualise medicine', however, the results of this study indicate that in a cancer population genotyping for CYP2C19 would significantly underestimate the number of phenotypic PM of drugs, such as cyclophosphamide, which may be metabolised by this enzyme.
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18
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Panigrahi D, Sharma R. Development and validation of an RP-HPLC method for simultaneous analysis of drotaverine and omeprazole in a tablet dosage form. ACTA CHROMATOGR 2008. [DOI: 10.1556/achrom.20.2008.3.10] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Raman NVVSS, Reddy KR, Prasad AVSS, Ramakrishna K. Development and Validation of a GC–MS Method for the Determination of Methyl and Ethyl Camphorsulfonates in Esomeprazole Magnesium. Chromatographia 2008. [DOI: 10.1365/s10337-008-0756-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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20
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Figueiras A, Sarraguça JMG, Pais AACC, Veiga JF, Carvalho RA. New insight into the discrimination between omeprazole enantiomers by cyclodextrins in aqueous solution. J INCL PHENOM MACRO 2008. [DOI: 10.1007/s10847-008-9477-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Vaccher MP, Charton J, Guelzim A, Caignard DH, Bonte JP, Vaccher C. Preparative enantiomeric separation of potent AMP-activated protein kinase activator by HPLC on amylose-based chiral stationary phase. J Pharm Biomed Anal 2008; 46:920-8. [DOI: 10.1016/j.jpba.2008.01.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2007] [Revised: 01/16/2008] [Accepted: 01/23/2008] [Indexed: 10/22/2022]
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22
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Podilsky G, Berger‐Gryllaki M, Testa B, Pannatier A. Development and Validation of an HPLC Method for the Simultaneous Monitoring of Bromazepam and Omeprazole. J LIQ CHROMATOGR R T 2008. [DOI: 10.1080/10826070801893508] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Gregory Podilsky
- a Department of Pharmacy , University Hospital Centre , Lausanne, Switzerland
| | | | - Bernard Testa
- a Department of Pharmacy , University Hospital Centre , Lausanne, Switzerland
| | - André Pannatier
- a Department of Pharmacy , University Hospital Centre , Lausanne, Switzerland
- b School of Pharmaceutical Sciences , EPGL, University of Geneva, University of Lausanne , Switzerland
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23
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Felix G, Berthod A. Commercial Chiral Stationary Phases for the Separations of Clinical Racemic Drugs. SEPARATION AND PURIFICATION REVIEWS 2007. [DOI: 10.1080/15422110701826997] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Martens-Lobenhoffer J, Reiche I, Tröger U, Mönkemüller K, Malfertheiner P, Bode-Böger SM. Enantioselective quantification of omeprazole and its main metabolites in human serum by chiral HPLC–atmospheric pressure photoionization tandem mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2007; 857:301-7. [PMID: 17702674 DOI: 10.1016/j.jchromb.2007.07.038] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2007] [Revised: 07/17/2007] [Accepted: 07/24/2007] [Indexed: 11/28/2022]
Abstract
Omeprazole is a proton pump inhibitor drug in widespread use for the reduction of gastric acid production. It is also proposed as a test substance for the phenotyping of cytochrome CYP3A4 and CYP2C19 enzyme activities. For this purpose, it is necessary to quantify, additionally to omeprazole, the two main metabolites 5-hydroxyomeprazole and omeprazole-sulfon in human plasma. Since omeprazole is a racemic mixture of two enantiomers and its enzymatic decomposition depends in part on its chiral configuration, full information about its metabolic breakdown can only be gained by enantioselective quantification of the drug and its metabolites. We introduce a new LC-MS/MS method that is capable to simultaneously quantify omeprazole and its two main metabolites enantioselectively in human serum. The method features solid-phase extraction, normal phase chiral HPLC separation and atmospheric pressure photoionization tandem mass spectrometry. As internal standards serve stable isotope labeled omeprazole and 5-hydroxyomeprazole. The calibration functions are linear in the range of 5-750 ng/ml for the omeprazole enantiomers and omeprazole-sulfon, and 2.5-375 ng/ml for the 5-hydroxyomeprazole enantiomers, respectively. Intra- and inter-day relative standard deviations are <7% for omeprazole and 5-hydroxyomeprazole enantiomers, and <9% for omeprazole-sulfon, respectively.
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Affiliation(s)
- Jens Martens-Lobenhoffer
- Institute of Clinical Pharmacology, Otto-von-Guericke University, Leipziger Strasse 44, 39120 Magdeburg, Germany.
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Espinosa Bosch M, Ruiz Sánchez AJ, Sánchez Rojas F, Bosch Ojeda C. Analytical methodologies for the determination of omeprazole: An overview. J Pharm Biomed Anal 2007; 44:831-44. [PMID: 17532167 DOI: 10.1016/j.jpba.2007.04.022] [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: 01/23/2007] [Revised: 04/16/2007] [Accepted: 04/17/2007] [Indexed: 10/23/2022]
Abstract
Omeprazole, a gastric acid pump inhibitor, dose-dependently controls gastric acid secretion; the drug has greater antisecretory activity than histamine H(2)-receptor antagonists. Omeprazole has been determined in formulations and biological fluids by a variety of methods such as spectrophotometry, high-performance liquid chromatography with ultraviolet detection and liquid chromatography coupled with tandem mass spectrometry. The overview includes the most relevant analytical methodologies used in its determination since the origin still today.
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Affiliation(s)
- M Espinosa Bosch
- Department of Pharmacy, General Hospital, University Hospital Virgen del Rocío, Manuel Siurot s/n, 41013 Seville, Spain
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Olsson J, Marlin ND, Blomberg LG. Enantiomeric Separation of Omeperazole Enantiomers by Aqueous CE Using UV and MS Detection. Chromatographia 2007. [DOI: 10.1365/s10337-007-0317-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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27
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Rezk NL, Brown KC, Kashuba AD. A simple and sensitive bioanalytical assay for simultaneous determination of omeprazole and its three major metabolites in human blood plasma using RP-HPLC after a simple liquid–liquid extraction procedure. J Chromatogr B Analyt Technol Biomed Life Sci 2006; 844:314-21. [DOI: 10.1016/j.jchromb.2006.07.047] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2006] [Revised: 06/09/2006] [Accepted: 07/16/2006] [Indexed: 10/24/2022]
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28
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Nageswara Rao R, Narasa raju A, Nagaraju D. Enantiospecific resolution of rabeprazole by liquid chromatography on amylose-derived chiral stationary phase using photo diode array and polarimetric detectors in series. Talanta 2006; 70:805-10. [DOI: 10.1016/j.talanta.2006.01.042] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2005] [Revised: 01/28/2006] [Accepted: 01/28/2006] [Indexed: 11/30/2022]
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29
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Wang J, Wang Y, Fawcett JP, Wang Y, Gu J. Determination of omeprazole in human plasma by liquid chromatography–electrospray quadrupole linear ion trap mass spectrometry. J Pharm Biomed Anal 2005; 39:631-5. [PMID: 15941642 DOI: 10.1016/j.jpba.2005.04.011] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2005] [Revised: 04/12/2005] [Accepted: 04/14/2005] [Indexed: 11/25/2022]
Abstract
An analytical method for the determination of omeprazole in human plasma has been developed based on liquid chromatography mass spectrometry. The analyte and internal standard sildenafil are extracted from plasma by liquid-liquid extraction using diethyl ether:dichloromethane (60:40, v/v) and separated by reversed phase high-performance liquid chromatography (HPLC) using acetonitrile:methanol:10 mM ammonium acetate (37.5:37.5:25, v/v/v) as mobile phase. Detection is carried out by multiple reaction monitoring on a Q TRAP LC/MS/MS system (Q TRAP). The method has a chromatographic run time of 3.5 min and is linear within the range 0.50-800 ng/mL. Intra- and inter-day precision expressed as relative standard deviation ranged from 0.4 to 8.5% and from 1.2 to 6.8%, respectively. Assay expressed as relative error was <5.7%. The method has been applied in a bioequivalence study of two capsule formulations of omeprazole.
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Affiliation(s)
- Jian Wang
- Research Center for Drug Metabolism, Jilin University, Changchun 130023, PR China
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30
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Method development and validation for the separation and determination of omeprazole enantiomers in pharmaceutical preparations by capillary electrophoresis. Anal Chim Acta 2005. [DOI: 10.1016/j.aca.2004.11.018] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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del Nozal MJ, Toribio L, Bernal JL, Alonso C, Jiménez JJ. Chiral separation of omeprazole and several related benzimidazoles using supercritical fluid chromatography. J Sep Sci 2004; 27:1023-9. [PMID: 15352722 DOI: 10.1002/jssc.200401835] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A study of the enantiomeric separation of omeprazole and several related benzimidazoles, using supercritical fluid chromatography (SFC), on the amylose based column Chiralpak AD is presented in this work. The effect of the organic modifier as well as temperature on the retention and enantioresolution was investigated. Alcohol-type modifiers provided the best results, allowing the enantiomeric separation of all the compounds studied with resolutions that were in most cases higher than 2, and analysis times lower than 10 minutes. An investigation of the temperature effect revealed that the isoelution temperature was below the working temperature range in only two cases, and hence it was better to work at the highest temperature permitted.
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Affiliation(s)
- M Jesús del Nozal
- Department of Analytical Chemistry, Faculty of Sciences, University of Valladolid, C/Prado de la Magdalena s/n, 4700-Valladolid, Spain
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