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Mahfoudhi S, Mory C, Le Ven J, Coudore F, El Helali N, Safta F, Le Monnier A. Simultaneous determination of oxacillin and cloxacillin in plasma and CSF using turbulent flow liquid chromatography coupled to high-resolution mass spectrometry: Application in therapeutic drug monitoring. J Chromatogr B Analyt Technol Biomed Life Sci 2024; 1233:123979. [PMID: 38160527 DOI: 10.1016/j.jchromb.2023.123979] [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: 09/25/2023] [Revised: 12/13/2023] [Accepted: 12/17/2023] [Indexed: 01/03/2024]
Abstract
Cloxacillin and oxacillin are group M penicillins. The therapeutic monitoring of plasma concentrations of these antibiotics and those of their hydroxymethylated metabolites is of great clinical interest, especially in the choice of an adequate dosage allowing an effective treatment while limiting the occurrence of undesirable effects and the development of bacterial resistance. In this context, we conducted this work aiming at developing and validating a method allowing the determination of cloxacillin and oxacillin as well as the identification of their active metabolites in different biological matrices (CSF and plasma) using turbulent flow liquid chromatography coupled to high-resolution mass spectrometry. To do this, we carried out several optimisation tests. Subsequently, we validated our method according to the latest bioanalytical validation recommendations of the European Medicines Agency. The validation results showed that our method is specific and sensitive. We obtained good linearity in the range 0.5 to 100 µg/mL with correlation coefficients above 0.995. The lower limit of quantification was 0.5 µg/mL for each analyte. The method was found to be accurate with repeatability and reproducibility coefficients of variation below 15 %. Our method is also accurate with bias values below 15 %. Recovery values ranged from 87 % to 95 %. Finally, we were able to apply our method to the therapeutic monitoring of the analysed molecules and to identify their active metabolites. Our results suggest that LC-MS shows superiority in the therapeutic monitoring of these antibiotics due to the superiority of specificity shown by this method. This assay method can be routinely used for the daily plasma assays of patients treated with these antibiotics in the context of therapeutic monitoring.
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Affiliation(s)
- Sarra Mahfoudhi
- Laboratory of Chemical, Galenic and Pharmacological Development of Medicines (LR12ES09), University of Monastir, Faculty of Pharmacy of Monastir, Ibn Sina Street, 5000 Monastir, Tunisia.
| | - Celine Mory
- Clinical Microbiology Department and Therapeutic Drug Monitoring Platform, Hospital Group Paris Saint-Joseph, Paris, France
| | - Jessica Le Ven
- Clinical Microbiology Department and Therapeutic Drug Monitoring Platform, Hospital Group Paris Saint-Joseph, Paris, France
| | - François Coudore
- Clinical Microbiology Department and Therapeutic Drug Monitoring Platform, Hospital Group Paris Saint-Joseph, Paris, France; Université Paris-Saclay, UVSQ, CESP, UMR 1018, CESP-Inserm, Faculty of Pharmacy, Orsay, France
| | - Najoua El Helali
- Clinical Microbiology Department and Therapeutic Drug Monitoring Platform, Hospital Group Paris Saint-Joseph, Paris, France
| | - Fethi Safta
- Laboratory of Chemical, Galenic and Pharmacological Development of Medicines (LR12ES09), University of Monastir, Faculty of Pharmacy of Monastir, Ibn Sina Street, 5000 Monastir, Tunisia
| | - Alban Le Monnier
- Clinical Microbiology Department and Therapeutic Drug Monitoring Platform, Hospital Group Paris Saint-Joseph, Paris, France; Institut Micalis, UMR 1319 University Paris Saclay, INRAE, AgroParis Tech, Chatenay-Malabry, France
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Kumar V, Bhutani H, Singh S. ICH guidance in practice: Validated stability-indicating HPLC method for simultaneous determination of ampicillin and cloxacillin in combination drug products. J Pharm Biomed Anal 2007; 43:769-73. [PMID: 16959462 DOI: 10.1016/j.jpba.2006.07.051] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2006] [Accepted: 07/28/2006] [Indexed: 10/24/2022]
Abstract
Ampicillin and cloxacillin were degraded together under different stress test conditions prescribed by International Conference on Harmonization. The samples so generated were used to develop a stability-indicating high performance liquid chromatographic (HPLC) method for the two drugs. The drugs were well separated from degradation products using a reversed-phase (C-18) column and a mobile phase comprising of acetonitrile:phosphate buffer (pH 5.0), which was delivered initially in the ratio of 15:85 (v/v) for 1 min, then changed to 30:70 (v/v) for next 14 min, and finally equilibrated back to 15:85 (v/v) from 15 to 20 min. Other HPLC parameters were: flow rate, 1 ml/min; detection wavelength, 225 nm; and injection volume, 5 microl. The method was validated for linearity, precision, accuracy, specificity and selectivity. It was also compared with the assay procedures given in British Pharmacopoeia for individual drugs. Similar results were obtained, indicating that the proposed single method allowed selective analysis of both ampicillin and cloxacillin, in the presence of their degradation products formed under a variety of stress conditions. The developed procedure was also applicable to the determination of instability of the drugs in commercial products.
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Affiliation(s)
- Vijay Kumar
- Department of Pharmaceutical Analysis, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, S.A.S. Nagar 160062, Punjab, India
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Determination of eight penicillins in serum from cattle and pigs by generic HPLC method. Chromatographia 2001. [DOI: 10.1007/bf02491068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Lal J, Paliwal JK, Grover PK, Gupta RC. Determination of ampicillin in serum by high-performance liquid chromatography with precolumn derivatization. JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL APPLICATIONS 1994; 655:142-6. [PMID: 8061823 DOI: 10.1016/0378-4347(94)00028-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A high-performance liquid chromatographic assay method using precolumn derivatization and fluorescence detection has been developed and validated for the determination of ampicillin in serum. The presented method is simple and provides improved selectivity and sensitivity over other existing HPLC methods. It is linear over the concentration range of 100 to 10,000 ng/ml (method 1) and 2 to 1000 ng/ml (method 2) and the extraction recovery is more than 75%. The coefficient of variation is found to be less than 10% over the concentration ranges studied.
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Affiliation(s)
- J Lal
- Pharmacokinetics and Metabolism Division, Central Drug Research Institute, Lucknow, India
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Nelis HJ, Vandenbranden J, Verhaeghe B, De Kruif A, Mattheeuws D, De Leenheer AP. Liquid chromatographic determination of ampicillin in bovine and dog plasma by using a tandem solid-phase extraction method. Antimicrob Agents Chemother 1992; 36:1606-10. [PMID: 1416841 PMCID: PMC192011 DOI: 10.1128/aac.36.8.1606] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The determination of ampicillin in plasma and serum by reversed-phase high-performance liquid chromatography with UV detection suffers from poor selectivity and sensitivity. Currently, the most common approach to overcoming these problems consists of improving the compound's detectability via pre- or postcolumn derivatization. In the method that we describe, however, enhanced selectivity is afforded by sample purification by a tandem solid-phase extraction method (ion-exchange and reversed-phase). This approach permits detection at wavelengths of as low as 210 nm, which results in enhanced sensitivity (detection limit, 0.01 microgram/ml). A second factor that affects selectivity is the addition to the chromatographic eluent of a crown ether to optimize the separation between ampicillin and polar endogenous plasma constituents. This combination of improved sample pretreatment and a more selective chromatographic system in conjunction with internal standardization forms the basis of a new assay for the quantitation of ampicillin in plasma. The overall recovery of ampicillin was 76.4% +/- 4.9% (n = 24), and the within-run and between-run coefficients of variation ranged from 1.6 to 7.2%. The method was applied to pharmacokinetic studies in cows and dogs after intramuscular or oral administration of the drug.
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Affiliation(s)
- H J Nelis
- Laboratoria voor Medische Biochemie en voor Klinische Analyse, Rijksuniversiteit Gent, Belgium
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High-performance liquid chromatographic method for the determination of cloxacillin in commercial preparations and for stability studies. J Chromatogr A 1991. [DOI: 10.1016/s0021-9673(00)91452-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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