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Yu L, Kang S, Cheng L, Zhang Q, Ouyang F, Han L, Zhan M, Liao D, Zhang P, Yan J, Huang X. Establishment and clinical application of a candidate reference measurement procedure for quantification of urinary vanillylmandelic acid and homovanillic acid using ID-LC-MS/MS method. J Pharm Biomed Anal 2024; 248:116311. [PMID: 38901157 DOI: 10.1016/j.jpba.2024.116311] [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: 03/29/2024] [Revised: 06/11/2024] [Accepted: 06/11/2024] [Indexed: 06/22/2024]
Abstract
Neuroblastoma (NB), an embryonic tumor of the autonomous nervous system, poses a significant threat to the health and lives of children. Accurate measurement of vanillylmandelic acid (VMA) and homovanillic acid (HVA) in human urine is crucial for screening and diagnosis of NB. Although various laboratories have developed liquid chromatography tandem mass spectrometry (LC-MS/MS) method to detect VMA and HVA, the comparability between the results obtained from different laboratories and methods was poor. The absence of reference method for VMA and HVA hinders the standardization of their measurements. Therefore, a candidate reference measurement procedure (cRMP) based on isotope dilution LC-MS/MS (ID-LC-MS/MS) for the detection of VMA and HVA in human urine was established. Urine samples were spiked with VMA-d3 and HVA-d5 as internal standards and extracted using a protein precipitation method. The cRMP exhibited desirable precision with the total imprecision below 5 %. The accuracy of this cRMP was demonstrated by the high analytical recovery (98.64 % - 102.22 % and 98.41 % - 100.97 % for VMA and HVA, respectively), and comparability between different reference systems. The limit of detection for HVA and VMA were 15.625 ng/mL and 3.906 ng/mL, respectively; the quantification limits were 62.5 ng/mL and 7.813 ng/mL, respectively, which can meet the clinical detection requirements. The linear range was from 78.125 ng/mL to 20 μg/mL. Specificity evaluations showed no corresponding interference from structurally similar analogs. In conclusion, we have established a cRMP based on ID-LC-MS/MS for the measurement of VMA and HVA in urine samples, demonstrating well-defined method performance including accuracy, precision, and specificity. This newly established cRMP is suitable for routine assay standardization and evaluation of clinical samples. Furthermore, this method has the potential to significantly enhance the diagnostic accuracy for neuroblastoma.
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Affiliation(s)
- Lintao Yu
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China
| | - Shiyue Kang
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China
| | - Long Cheng
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China
| | - Qiaoxuan Zhang
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China; Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China
| | - Fen Ouyang
- Department of Laboratory Medicine, Nanfang Hospital Baiyun Branch, Southern Medical University, Guangzhou 510000, PR China
| | - Liqiao Han
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China; Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China
| | - Min Zhan
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China; Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China
| | - Dezheng Liao
- Community Health Service Center of Xingang Street, Haizhu District, Guangzhou 510000, PR China
| | - Pengwei Zhang
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China; Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China; The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong-Hong Kong-Macau Joint Lab on Chinese Medicine and Immune Disease Research, Guangzhou 510120, PR China
| | - Jun Yan
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China; Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China.
| | - Xianzhang Huang
- Second Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China; Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, PR China.
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Mkhize B, Court R, Castel S, Joubert A, van der Merwe M, Maartens G, Conradie F, Wiesner L. Validation and application of an online extraction and liquid chromatography tandem mass spectrometry assay for the analysis of delamanid and its DM-6705 metabolite in human breast milk. J Pharm Biomed Anal 2024; 246:116225. [PMID: 38761519 DOI: 10.1016/j.jpba.2024.116225] [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: 03/12/2024] [Revised: 04/24/2024] [Accepted: 05/13/2024] [Indexed: 05/20/2024]
Abstract
We developed and validated a bioanalytical assay to quantify delamanid and its key metabolite (DM-6705) in breast milk and aimed to quantify the secretion of these compounds in breast milk. Due to the hydrophobic nature of the analytes, special care was taken during sample preparation to prevent the formation of fatty deposits during protein precipitation. This was followed by online solid phase extraction and liquid chromatography with tandem mass spectrometry for detection. A Restek Viva BiPh C18 column (1.0 mm×50 mm, 5 µm) was used for extraction while chromatographic separation was performed using a Waters Xterra MS C18 (2.1 mm×100 mm, 5 μm) analytical column with an isocratic mobile phase consisting of acetonitrile, methanol, and 5 mM ammonium carbonate. The mass spectrometric detection of the analytes was performed using an AB Sciex 3200 mass spectrometer employing electrospray ionisation in the positive mode with multiple reaction motoring of the relevant precursor and product ions. Delamanid-d4 and OPC-14714 were used as internal standards. A quadratic (weighted 1/x concentration) regression was used to fit calibration curves for delamanid and DM-6705 over the concentration range of 10.0 - 1000 ng/mL. The intra- and inter-day validation accuracies of the quality control samples were between 92.1% and 98.3% for delamanid, and 97.0% and 102.8% for DM-6705. The percentage coefficient of variation (precision) was less than 7.8%. To our knowledge, this is the first report describing the concentrations of delamanid and DM-6705 in the breast milk of patients treated for rifampicin-resistant tuberculosis.
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Affiliation(s)
- Buyisile Mkhize
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Richard Court
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Sandra Castel
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Anton Joubert
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Marthinus van der Merwe
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Gary Maartens
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Francesca Conradie
- Department of Clinical Medicine, University of the Witwatersrand, South Africa
| | - Lubbe Wiesner
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa.
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3
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Almurshedi AS, Radwan MA, Al Quadeib B, Aldosari B, Alfagih IM, Almarshidy SS. Pharmacokinetics of Afatinib after Intravenous and Oral Administrations in Rats Using Validated UPLC MS/MS Assay. J Chromatogr Sci 2024; 62:249-256. [PMID: 36617945 DOI: 10.1093/chromsci/bmac110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 11/24/2022] [Accepted: 12/26/2022] [Indexed: 01/10/2023]
Abstract
Afatinib is designated as the first-line management therapy for patients with advanced non-small cell lung cancer, and metastatic head and neck cancer. LC coupled to MS/MS can be utilised in therapeutic drug monitoring to ensure optimal use of Afatinib with the reduction of its possible adverse reactions. The aim of this investigation was to determine the pharmacokinetics of Afatinib in rats after single IV (2 mg/kg) and oral (8 mg/kg) doses. Therefore, a selective, sensitive and precise UPLC MS/MS assay thru electrospray ionisation basis with positive ionisation approach was established to measure Afatinib concentrations in the rat. The precision and accuracy of the developed assay method in the concentration range of 10-1000 ng/ml show no significant difference among inter- and-intra-day analysis (P > 0.05). Linearity was detected over the studied range with correlation coefficient, r > 0.995 (n = 6/day). The pharmacokinetics of Afatinib in the rat after a single IV dose showed a mean terminal half-life of 4.6 ± 0.97 h, and a mean clearance 480 ± 80 ml/h/kg. After PO administration, a short absorption phase with a mean Tmax of 1.3 ± 0.6 h with the highest concentration of 513.9 ± 281.1 ng/ml, and the lowest concentration detected after 24 h was 18.8 ± 10.7 ng/ml.
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Affiliation(s)
- Alanood S Almurshedi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, 12331 Riyadh, Saudi Arabia
| | - Mahasen A Radwan
- Department of Pharmacy Practice/Clinical Pharmacy, Faculty of Pharmacy, Egyptian Russian University, Cairo-Suez Road, 11829 Cairo, Egypt
| | - Bushra Al Quadeib
- Department of Pharmaceutics, College of Pharmacy, King Saud University, 12331 Riyadh, Saudi Arabia
| | - Basmah Aldosari
- Department of Pharmaceutics, College of Pharmacy, King Saud University, 12331 Riyadh, Saudi Arabia
| | - Iman M Alfagih
- Department of Pharmaceutics, College of Pharmacy, King Saud University, 12331 Riyadh, Saudi Arabia
| | - Salma S Almarshidy
- Department of Pharmaceutics, College of Pharmacy, King Saud University, 12331 Riyadh, Saudi Arabia
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Godage N, Qian SS, Cudjoe E, Gionfriddo E. Enhancing Quantitative Analysis of Xenobiotics in Blood Plasma through Cross-Matrix Calibration and Bayesian Hierarchical Modeling. ACS MEASUREMENT SCIENCE AU 2024; 4:127-135. [PMID: 38404495 PMCID: PMC10885322 DOI: 10.1021/acsmeasuresciau.3c00049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/18/2023] [Accepted: 11/20/2023] [Indexed: 02/27/2024]
Abstract
This study addresses the challenges of matrix effects and interspecies plasma protein binding (PPB) on measurement variability during method validation across diverse plasma types (human, rat, rabbit, and bovine). Accurate measurements of small molecules in plasma samples often require matrix-matched calibration approaches with the use of specific plasma types, which may have limited availability or affordability. To mitigate the costs associated with human plasma measurements, we explore in this work the potential of cross-matrix-matched calibration using Bayesian hierarchical modeling (BHM) to correct for matrix effects associated with PPB. We initially developed a targeted quantitative approach utilizing biocompatible solid-phase microextraction coupled with liquid chromatography-mass spectrometry for xenobiotic analysis in plasma. The method was evaluated for absolute matrix effects across human, bovine, rat, and rabbit plasma comparing pre- and postmatrix extraction standards. Absolute matrix effects from 96 to 108% for most analytes across plasma sources indicate that the biocompatibility of the extraction phase minimizes interference coextraction. However, the extent of PPB in different media can still affect the accuracy of the measurement when the extraction of small molecules is carried out via free concentration, as in the case of microextraction techniques. In fact, while matrix-matched calibration revealed high accuracy, cross-matrix calibration (e.g., using a calibration curve generated from bovine plasma) proved inadequate for precise measurements in human plasma. A BHM was used to calculate correction factors for each analyte within each plasma type, successfully mitigating the measurement bias resulting from diverse calibration curve types used to quantify human plasma samples. This work contributes to the development of cost-effective, efficient calibration strategies for biofluids. Leveraging easily accessible plasma sources, like bovine plasma, for method optimization and validation prior to analyzing costly plasma (e.g., human plasma) holds substantial advantages applicable to biomonitoring and pharmacokinetic studies.
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Affiliation(s)
- Nipunika
H. Godage
- Department
of Chemistry and Biochemistry, College of Natural Sciences and Mathematics, The University of Toledo, Toledo, Ohio 43606, United States
- School
of Green Chemistry and Engineering, The
University of Toledo, Toledo, Ohio 43606, United States
- Dr.
Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio 43606, United States
| | - Song S. Qian
- Department
of Environmental Sciences, The University
of Toledo, Toledo, Ohio 43606, United States
| | | | - Emanuela Gionfriddo
- Department
of Chemistry and Biochemistry, College of Natural Sciences and Mathematics, The University of Toledo, Toledo, Ohio 43606, United States
- School
of Green Chemistry and Engineering, The
University of Toledo, Toledo, Ohio 43606, United States
- Dr.
Nina McClelland Laboratory for Water Chemistry and Environmental Analysis, The University of Toledo, Toledo, Ohio 43606, United States
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Huppertz B, Möller-Friedrich S, Baum K. Matrix Effects of Urine Marker Substances in LC-MS/MS Analysis of Drug of Abuse. Ther Drug Monit 2024; 46:118-126. [PMID: 37646651 PMCID: PMC10769167 DOI: 10.1097/ftd.0000000000001127] [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: 02/10/2023] [Accepted: 05/23/2023] [Indexed: 09/01/2023]
Abstract
BACKGROUND Analysis of drug abuse is frequently performed using high-performance liquid chromatography with an MS/MS detector and electrospray ionization. In this context, matrix effects, like signal reduction by ion suppression of individual analytes, play an important role. In this study, the authors evaluated the matrix effect caused by polyethylene glycol (PEG) with chain lengths ranging from 6 to 12 repeating units in drug analysis by LC-MS/MS. Selected chain lengths were used in the Ruma urine marker system. METHODS AND RESULTS Amphetamines, opiates, opioids, antidepressants, psychotics, benzodiazepines, z-substances, and individual drugs, including THCCOOH, cocaine, LSD, and some of their metabolites were investigated. The matrix effect was investigated at PEG concentrations of 500 mcg/mL and 20 mcg/mL. The effect of each PEG molecule was determined. Furthermore, the effects of different common sample preparations on the PEG matrix effects were evaluated. There was a strong correlation between the retention time of PEG and the drug that was ion-suppressed by PEG. The matrix effect decreased to the point where it was within an acceptable range at the lower PEG concentrations investigated in this study. CONCLUSIONS Matrix effects were observed for drugs with approximately the same retention times as the individual PEGs. The influence of the different workup methods was not as clear, which may be because of the similar solubilities of the PEGs and some analytes. At low PEG concentrations, the matrix effect was always below 60%, except for nortilidine. All the drugs were detectable. The effect on quantification was less than 15% for substances with deuterated analytes as internal standards and less than 32% for analytes without their own internal standards.
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Basov NV, Rogachev AD, Aleshkova MA, Gaisler EV, Sotnikova YS, Patrushev YV, Tolstikova TG, Yarovaya OI, Pokrovsky AG, Salakhutdinov NF. Global LC-MS/MS targeted metabolomics using a combination of HILIC and RP LC separation modes on an organic monolithic column based on 1-vinyl-1,2,4-triazole. Talanta 2024; 267:125168. [PMID: 37708770 DOI: 10.1016/j.talanta.2023.125168] [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: 06/01/2023] [Revised: 08/28/2023] [Accepted: 09/04/2023] [Indexed: 09/16/2023]
Abstract
The paper presents an LC-MS/MS-based approach to targeted screening of both polar and non-polar metabolites using a synthesized monolithic column which is a copolymer of styrene, divinylbenzene, and 1-vinyl-1,2,4-triazole. It was shown that this column in combination with eluents 20 mM (NH4)2CO3 + NH3 (pH = 9.8, eluent A) and ACN (eluent B) allows for separation of metabolites of different nature in two modes, HILIC and RP LC, and these methods are mutually complementary. A combination of analyses based on these two modes was proposed, allowing detection of about 400 metabolites in a total time of less than 30 min. Comparison of the developed method with those utilizing commercially available columns with sorbents of various types showed that it could provide a broader metabolite coverage. Using the developed approach, metabolomic screening of dried blood spots samples of mice exposed with X-ray was performed, and metabolites that could be considered as possible markers of irradiation exposure and organ tissue damage were detected. Analysis of marker metabolites revealed metabolic pathways that were altered by radiation exposure. Comparison of the results with literature data showed the effectiveness of the developed metabolomic screening approach.
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Affiliation(s)
- Nikita V Basov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Acad. Lavrentiev Ave., 9, 630090, Novosibirsk, Russia; Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia
| | - Artem D Rogachev
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Acad. Lavrentiev Ave., 9, 630090, Novosibirsk, Russia; Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia.
| | - Maria A Aleshkova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Acad. Lavrentiev Ave., 9, 630090, Novosibirsk, Russia; Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia
| | - Evgeny V Gaisler
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Acad. Lavrentiev Ave., 9, 630090, Novosibirsk, Russia; Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia
| | - Yulia S Sotnikova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Acad. Lavrentiev Ave., 9, 630090, Novosibirsk, Russia; Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia; Boreskov Institute of Catalysis, Acad. Lavrentiev Ave., 5, 630090, Novosibirsk, Russia
| | - Yuri V Patrushev
- Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia; Boreskov Institute of Catalysis, Acad. Lavrentiev Ave., 5, 630090, Novosibirsk, Russia
| | - Tatiana G Tolstikova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Acad. Lavrentiev Ave., 9, 630090, Novosibirsk, Russia; Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia
| | - Olga I Yarovaya
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Acad. Lavrentiev Ave., 9, 630090, Novosibirsk, Russia; Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia
| | - Andrey G Pokrovsky
- Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia
| | - Nariman F Salakhutdinov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Acad. Lavrentiev Ave., 9, 630090, Novosibirsk, Russia; Novosibirsk State University, Pirogov Str., 2, 630090, Novosibirsk, Russia
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Tsikas D. Application of the Bland-Altman and Receiver Operating Characteristic (ROC) Approaches to Study Isotope Effects in Gas Chromatography-Mass Spectrometry Analysis of Human Plasma, Serum and Urine Samples. Molecules 2024; 29:365. [PMID: 38257277 PMCID: PMC10818406 DOI: 10.3390/molecules29020365] [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: 12/12/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
The Bland-Altman approach is one of the most widely used mathematical approaches for method comparison and analytical agreement. This work describes, for the first time, the application of Bland-Altman to study 14N/15N and 1H/2H (D) chromatographic isotope effects of endogenous analytes of the L-arginine/nitric oxide pathway in human plasma, serum and urine samples in GC-MS. The investigated analytes included arginine, asymmetric dimethylarginine, dimethylamine, nitrite, nitrate and creatinine. There was a close correlation between the percentage difference of the retention times of the isotopologs of the Bland-Altman approach and the area under the curve (AUC) values of the receiver operating characteristic (ROC) approach (r = 0.8619, p = 0.0047). The results of the study suggest that the chromatographic isotope effects in GC-MS result from differences in the interaction strengths of H/D isotopes in the derivatives with the hydrophobic stationary phase of the GC column. D atoms attenuate the interaction of the skeleton of the molecules with the lipophilic GC stationary phase. Differences in isotope effects in plasma or serum and urine in GC-MS are suggested to be due to a kind of matrix effect, and this remains to be investigated in forthcoming studies using Bland-Altman and ROC approaches.
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Affiliation(s)
- Dimitrios Tsikas
- Core Unit Proteomics, Institute of Toxicology, Hannover Medical School, 30623 Hannover, Germany
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Mkhize B, Court R, Castel S, Joubert A, van der Merwe M, Wiesner L. Development and validation of a liquid chromatography tandem mass spectrometry assay for the analysis of bedaquiline and M2 in breast milk. J Mass Spectrom Adv Clin Lab 2024; 31:8-16. [PMID: 38188986 PMCID: PMC10770620 DOI: 10.1016/j.jmsacl.2023.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 11/28/2023] [Accepted: 12/11/2023] [Indexed: 01/09/2024] Open
Abstract
Objective To develop and validate an assay for the analysis of bedaquiline and its M2 metabolite in human breast milk. Methods The analytes were extracted using solid phase extraction following protein precipitation. Quantification was performed with liquid chromatography coupled with tandem mass spectrometry. Chromatographic separation was achieved using gradient chromatography on a Poroshell 120 SB-C18 analytical column at 40 °C, with a flow rate of 350 µL/minute and a total run time of eight minutes. An AB Sciex 3000 mass spectrometer with electrospray ionization in the positive mode was used for detection, employing multiple reaction monitoring scan mode. Bedaquiline-d6 and M2-d3-13C were used as internal standards. Results Calibrations curves for bedaquiline and M2 exhibited quadratic (weighted 1/x concentration) regressions over the respective concentration ranges of 0.0780 to 5.00 µg/mL and 0.0312 to 2.00 µg/mL. Inter- and intra-day validation accuracies ranged between 96.7 % and 103.5 % for bedaquiline, and 104.2 % to 106.5 % for M2, with a coefficient of variation below 9.2 % for both compounds. Conclusion The developed assay demonstrated selectivity and robustness, enabling differentiation between bedaquiline and M2 within the context of endogenous compounds from six separate lots of breast milk samples. Successful application was observed in the analysis of breast milk samples sourced from patients treated for multidrug-resistant tuberculosis within a clinical study setting.
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Affiliation(s)
- Buyisile Mkhize
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Richard Court
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Sandra Castel
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Anton Joubert
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Marthinus van der Merwe
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Lubbe Wiesner
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
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Li Z, Li Z, Xie W, Liu J, Li B, Liu W, Shi Y. Hair-based rapid UPLC-MS/MS analysis of 36 phencyclidine-type substances in forensic cases. J Pharm Biomed Anal 2023; 234:115577. [PMID: 37480824 DOI: 10.1016/j.jpba.2023.115577] [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: 05/02/2023] [Revised: 07/06/2023] [Accepted: 07/11/2023] [Indexed: 07/24/2023]
Abstract
Phencyclidine (PCP) is a frequently abused dissociative agent. It causes confusion, increased tendencies toward violence, and concentration-dependent cytotoxicity after entry into the body. The parent nucleus of phencyclidine-type substances is arylcyclohexylamine, which is easy to modify; therefore, abusers and dealers can readily synthesize substitutes beyond the drug control catalog. An urgent need exists to establish screening methods for phencyclidine-type substances to provide technical support for abuse monitoring. In this study, 20 mg of hair was pulverized in 500 mL of methanol containing 0.5 ng/mL PCP-d5. After ultrasonication, centrifugation, and filtration, the supernatant was analyzed by ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) operating in the multiple reaction monitoring mode. Phencyclidine-type substances were separated in 13 min on a biphenyl column using a mobile phase gradient composed of A (water, formic acid 0.1%, acetonitrile 5%, 20 mmol/L ammonium acetate) and B (acetonitrile). The developed and validated method showed good selectivity, sensitivity (limit of detection: 0.25-2 pg/mg and lower limit of quantitation: 0.5-4 pg/mg), linearity (R2 > 0.994), accuracy, and precision (< 20%), and a dilution effect. The method also showed good recovery and acceptable matrix effects for most of the targeted compounds. This analytical approach was successfully applied for the identification and quantification of phencyclidine-type substances in hair from 87 authentic forensic cases. Nine analytes were detected: ketamine (10.3-26211.3 pg/mg), 2-F-2-oxo-PCE (11.5-4034.9 pg/mg), 2-FDCK (14.0-43290.2 pg/mg), 2-BrDCK (10.6-21170.0 pg/mg), nor2-FDCK (10.1-16767.4 pg/mg), tiletamine (10.1-3250.8 pg/mg), O-PCE (43.3-166.1 pg/mg), DCK (10.2-90.4 pg/mg), and norDCK (24.9-103.0 pg/mg).
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Affiliation(s)
- Ziyi Li
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Zehong Li
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Wanting Xie
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China; School of Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Jinting Liu
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China
| | - Bo Li
- School of Pharmacy, China Pharmaceutical University, Nanjing 211198, PR China
| | - Wei Liu
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China.
| | - Yan Shi
- Department of Forensic Toxicology, Academy of Forensic Science, Shanghai Key Laboratory of Forensic Medicine, Shanghai Forensic Science Platform, Key Laboratory of Forensic Sciences, Ministry of Justice, Shanghai 200063, PR China.
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Hobo Y, Nishikawa J, Asai-Taniguchi N, Yoneyama K, Watanabe Y, Miyashiro Y, Fujikata A. Evaluation of the therapeutic effects of AGA drugs by measuring finasteride, dutasteride, and dihydrotestosterone in hair. Clin Chim Acta 2023:117456. [PMID: 37385468 DOI: 10.1016/j.cca.2023.117456] [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: 04/11/2023] [Revised: 05/23/2023] [Accepted: 06/26/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND Androgenetic alopecia (AGA) is treated by 5α-reductase inhibitors (5ARI) such as finasteride and dutasteride, which are widely used as therapeutic agents. However, their pharmacokinetics in target organs (scalp and hair follicles) have not yet been investigated. PURPOSE To confirm the effective action of finasteride and dutasteride in the hair follicle tissues, we developed a method to measure these concentrations in hair. RESULTS Compared to the non-detection (N.D.) group, the dihydrotestosterone (DHT) concentrations decreased significantly in both the finasteride and dutasteride groups. The dutasteride group showed significantly lower DHT concentrations among all groups. CONCLUSIONS Measurement of finasteride, dutasteride, and DHT concentrations in hair would aid in evaluating the drug pharmacokinetics and its therapeutic effects on AGA patients.
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Affiliation(s)
- Yoshitaka Hobo
- ASKA Pharmamedical Co., Ltd. 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa, Japan.
| | - Jun Nishikawa
- ASKA Pharmamedical Co., Ltd. 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa, Japan
| | - Noriko Asai-Taniguchi
- ASKA Pharmamedical Co., Ltd. 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa, Japan
| | - Keisuke Yoneyama
- ASKA Pharmamedical Co., Ltd. 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa, Japan
| | - Yoko Watanabe
- ASKA Pharmamedical Co., Ltd. 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa, Japan
| | - Yoshimichi Miyashiro
- ASKA Pharmamedical Co., Ltd. 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa, Japan
| | - Akira Fujikata
- ASKA Pharmamedical Co., Ltd. 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa, Japan
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11
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Fernández-Fernández V, Ramil M, Rodríguez I. Basic micro-pollutants in sludge from municipal wastewater treatment plants in the Northwest Spain: Occurrence and risk assessment of sludge disposal. CHEMOSPHERE 2023:139094. [PMID: 37268235 DOI: 10.1016/j.chemosphere.2023.139094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/29/2023] [Accepted: 05/30/2023] [Indexed: 06/04/2023]
Abstract
Sludge is one of the most problematic residues generated during wastewater treatment. Herein, we validate a single-step, sensitive procedure for the determination of a selection of 46 basic micro-pollutants, either used as pharmaceuticals or pesticides, in sludge from municipal sewage treatment plants (STPs), using liquid chromatography tandem mass spectrometry as determination technique. The proposed method permitted to achieve accurate recoveries (values from 70% to 120%, for samples spiked at different concentration levels) using solvent-based calibration standards. This feature, combined with limits of quantification lower than 5 ng g-1 (dry weight), allowed the rapid and sensitive quantification of target compounds in freeze-dried sludge samples. Out of 46 investigated pollutants, 33 species showed detection frequencies above 85% in a group of 48 sludge samples, obtained from 45 STPs located in the Northwest of Spain. The assessment of eco-toxicological risks associated to sludge disposal as fertilizer in agriculture and/or forestry, considering average concentrations found in sludge samples, highlighted eight pollutants (sertraline, venlafaxine, N-desethyl amiodarone, amiodarone, norsertraline, trazodone, amitriptyline and ketoconazole) representing an environmental hazard based on ratios between predicted soil levels and non-effect concentrations estimated using the equilibrium partition method.
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Affiliation(s)
- V Fernández-Fernández
- Department of Analytical Chemistry, Nutrition and Food Sciences, IAQBUS - Institute of Research on Chemical and Biological Analysis, Universidade de Santiago de Compostela, R/Constantino Candeira SN, 15782, Santiago de Compostela, Spain
| | - M Ramil
- Department of Analytical Chemistry, Nutrition and Food Sciences, IAQBUS - Institute of Research on Chemical and Biological Analysis, Universidade de Santiago de Compostela, R/Constantino Candeira SN, 15782, Santiago de Compostela, Spain.
| | - I Rodríguez
- Department of Analytical Chemistry, Nutrition and Food Sciences, IAQBUS - Institute of Research on Chemical and Biological Analysis, Universidade de Santiago de Compostela, R/Constantino Candeira SN, 15782, Santiago de Compostela, Spain
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12
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Sedláčková S, Hubálek M, Vrkoslav V, Blechová M, Kozlík P, Cvačka J. Positive Effect of Acetylation on Proteomic Analysis Based on Liquid Chromatography with Atmospheric Pressure Chemical Ionization and Photoionization Mass Spectrometry. Molecules 2023; 28:molecules28093711. [PMID: 37175121 PMCID: PMC10180487 DOI: 10.3390/molecules28093711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 04/14/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023] Open
Abstract
A typical bottom-up proteomic workflow comprises sample digestion with trypsin, separation of the hydrolysate using reversed-phase HPLC, and detection of peptides via electrospray ionization (ESI) tandem mass spectrometry. Despite the advantages and wide usage of protein identification and quantification, the procedure has limitations. Some domains or parts of the proteins may remain inadequately described due to inefficient detection of certain peptides. This study presents an alternative approach based on sample acetylation and mass spectrometry with atmospheric pressure chemical ionization (APCI) and atmospheric pressure photoionization (APPI). These ionizations allowed for improved detection of acetylated peptides obtained via chymotrypsin or glutamyl peptidase I (Glu-C) digestion. APCI and APPI spectra of acetylated peptides often provided sequence information already at the full scan level, while fragmentation spectra of protonated molecules and sodium adducts were easy to interpret. As demonstrated for bovine serum albumin, acetylation improved proteomic analysis. Compared to ESI, gas-phase ionizations APCI and APPI made it possible to detect more peptides and provide better sequence coverages in most cases. Importantly, APCI and APPI detected many peptides which passed unnoticed in the ESI source. Therefore, analytical methods based on chymotrypsin or Glu-C digestion, acetylation, and APPI or APCI provide data complementary to classical bottom-up proteomics.
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Affiliation(s)
- Simona Sedláčková
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo Náměstí 542/2, 16000 Prague, Czech Republic
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 12800 Prague, Czech Republic
| | - Martin Hubálek
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo Náměstí 542/2, 16000 Prague, Czech Republic
| | - Vladimír Vrkoslav
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo Náměstí 542/2, 16000 Prague, Czech Republic
| | - Miroslava Blechová
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo Náměstí 542/2, 16000 Prague, Czech Republic
| | - Petr Kozlík
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 12800 Prague, Czech Republic
| | - Josef Cvačka
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences, Flemingovo Náměstí 542/2, 16000 Prague, Czech Republic
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 12800 Prague, Czech Republic
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13
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Quantitative determination of pesticides in human plasma using bio-SPME-LC-MS/MS: a robust tool to assess occupational exposure to pesticides. Anal Bioanal Chem 2023:10.1007/s00216-023-04589-8. [PMID: 36840808 DOI: 10.1007/s00216-023-04589-8] [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: 11/15/2022] [Revised: 01/24/2023] [Accepted: 02/07/2023] [Indexed: 02/26/2023]
Abstract
Analysis of biofluids, such as plasma, can be used to investigate occupational pesticide exposure in the agricultural industry. Considering the chemical complexity and variability of plasma samples, any protocol for pesticide analysis should achieve efficient sample cleanup to minimize matrix effects and enhance method sensitivity through analyte pre-concentration. In this work, a high-throughput method was developed for analysis of 79 pesticides, commonly used in agricultural practices, in human plasma, using biocompatible solid-phase microextraction (SPME) coupled to liquid chromatography-tandem mass spectrometry. An SPME method was developed using a biocompatible hydrophilic-lipophilic balance/polyacrylonitrile (HLB/PAN) extraction phase and demonstrated negligible matrix effects. The performance of the developed SPME method was compared to a QuEChERS -Quick, Easy, Cheap, Effective, Rugged, and Safe- method, the most common sample preparation and cleanup approach for pesticide analysis in complex matrices. Comparable accuracy and precision were achieved for both methods, with accuracy values within 70-120% and relative standard deviation < 15%. Overall, the developed SPME and QuEChERS methods extracted 79 out of 82 monitored pesticides in human plasma. The SPME protocol demonstrated higher sensitivity than the QuEChERS method and a drastic reduction of matrix effects.
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14
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Mokgope H, Leudjo Taka A, Klink MJ, Pakade VE, Walmsley T. Quantification of some ARVs' removal efficiency from wastewater using a moving bed biofilm reactor. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2022; 86:2928-2942. [PMID: 36515197 DOI: 10.2166/wst.2022.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
To date, in South Africa alone, there are an estimated 4.5 million people receiving antiretroviral (ARV) therapy. This places South Africa as the country with the largest ARV therapy programme in the world. As a result, there are an increasing number of reports on the occurrence of ARVs in South African waters. Achieving efficient and bio-friendly methods for the removal of these pollutants is considered as a concern for environmental researchers. This study aims at studying the efficiency of a moving bed biofilm reactor (MBBR) system for removing ARVs from wastewater. A continuous-flow laboratory scale system was designed, built, installed, and operated at a carrier filling rate of 30%, an organic loading rate of 0.6 kg COD/m3.d-1 OLR, a hydraulic retention time of 18h, and a 27.8 mL/min flow rate. The systems were monitored over time for the elimination of conventional wastewater parameters i.e., Biological Oxygen Demand, Chemical Oxygen Demand, and nutrients. The results showed that the MBBR system as a bio-friendly method has high efficiency in removing Nevirapine, Tenofovir, Efavirenz, Ritonavir and Emtricitabine from the synthetic influent sample with an average removal of 62%, 74%, 94%, 94% and 95%, respectively, after 10 days of operation.
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Affiliation(s)
- Herman Mokgope
- Department of Biotechnology, Vaal University of Technology, Vanderbijlpark Campus, Vanderbijlpark 1911, South Africa
| | - Anny Leudjo Taka
- Department of Chemistry, Vaal University of Technology, Vanderbijlpark Campus, Vanderbijlpark 1911, South Africa E-mail:
| | - Michael John Klink
- Department of Chemistry, Vaal University of Technology, Vanderbijlpark Campus, Vanderbijlpark 1911, South Africa E-mail:
| | - Vusumzi Emmanuel Pakade
- Department of Chemistry, Vaal University of Technology, Vanderbijlpark Campus, Vanderbijlpark 1911, South Africa E-mail:
| | - Tara Walmsley
- Department of Biotechnology, Vaal University of Technology, Vanderbijlpark Campus, Vanderbijlpark 1911, South Africa
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15
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Kharbouche L, Martínez Galera M, Díaz Galiano F, Gil García M. Pre-concentration of 218 multiclass pesticide in groundwater samples using MSU-1 mesoporous sorbent. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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16
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Simultaneous determination of 21 organophosphorus flame retardants in rice by gas chromatography quadrupole time-of-flight mass spectrometry. Talanta 2022. [DOI: 10.1016/j.talanta.2022.124103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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A Selective and Sensitive LC-MS/MS Method for Quantitation of Indole in Mouse Serum and Tissues. Metabolites 2022; 12:metabo12080716. [PMID: 36005588 PMCID: PMC9416675 DOI: 10.3390/metabo12080716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 07/22/2022] [Accepted: 07/25/2022] [Indexed: 12/04/2022] Open
Abstract
Indole is an endogenous substance currently being evaluated as a biomarker for ulcerative colitis, irritable bowel syndrome, Crohn’s disease and non-alcoholic fatty liver disease. A novel, selective, and sensitive method using liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS) was developed for quantitation of indole concentrations in mouse plasma and tissues. Samples were prepared by protein precipitation using ice-cold acetonitrile (ACN) followed by injecting the extracted analyte to LC-MS/MS system. Indole was separated using Synergi Fusion C18 (4 µm, 250 × 2.0 mm) column with mobile phase 0.1% aqueous formic acid (A) and methanol (B) using gradient flow with run time 12 min. The mass spectrometer was operated in atmospheric pressure chemical ionization (APCI) positive mode at unit resolution in multiple reaction monitoring (MRM) mode, using precursor ion > product ion combinations of 118.1 > 91.1 m/z for indole and 124.15 > 96.1 m/z for internal standard (IS) indole d7. The MS/MS response was linear over the range of indole concentrations (1−500 ng/mL). The validated method was applied for quantitation of indole concentrations range in mouse lungs (4.3−69.4 ng/g), serum (0.8−38.7 ng/mL) and cecum (1043.8−12,124.4 ng/g). This method would help investigate the role of indole as a biomarker and understand its implications in different disease states.
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18
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Bhattacharyya S, Poi R, Baskey Sen M, Kumar Hazra D, Ghosh R, Mandal S, Karmakar R. Establishment of modified QuEChERS-GC–MS-LC–MS/MS method for simultaneous screening of multi-class multi-pesticide residues in betelvine and consumer risk assessment. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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19
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Sanz I, Altomare A, Mondanelli G, Protti M, Valsecchi V, Mercolini L, Volpi C, Regazzoni L. Chromatographic measurement of 3-hydroxyanthranilate 3,4-dioxygenase activity reveals that edaravone can mitigate the formation of quinolinic acid through a direct enzyme inhibition. J Pharm Biomed Anal 2022; 219:114948. [PMID: 35907317 DOI: 10.1016/j.jpba.2022.114948] [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: 05/06/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 10/17/2022]
Abstract
Herein it is reported the development and application of two chromatographic assays for the measurement of the activity of 3-Hydroxyanthranilate-3,4-dioxygenase (3HAO). Such an enzyme converts 3-Hydroxyanthranilic acid (3HAA) to 2-amino-3-carboxymuconic semialdehyde (ACMS), which undergo a spontaneous, non-enzymatic cyclization to produce quinolinic acid (QUIN). The enzyme activity was measured by quantitation of the substrate consumption over time either with spectrophotometric (UV) or mass spectrometric (MS) detection upon reversed-phase chromatographic separation. MS detection resulted more selective and sensitive, but less accurate and precise. However, both methods have sufficient sensitivity to allow the measurement of enzyme activity with consistent results compared to literature data. Since MS detection allowed less sample consumption it was used to calculate the kinetics parameters (i.e., Vmax and Kd) of recombinant 3HAO. Another MS-based method was then developed to measure the amount of QUIN produced, revealing an incomplete conversion of 3HAA to QUIN. As suggested by previous studies, the enzyme activity was apparently sensitive to the redox state of the enzyme thiols. In fact, thiol reducing agents such as dithiothreitol (DTT) and glutathione (GSH), can alter the enzyme activity although the investigation on the exact mechanism involved in such effect was beyond the scope of the research. Interestingly, edaravone (EDA) induced an in vitro suppression of QUIN production through direct, competitive 3HAO inhibition. EDA is a molecule approved for the treatment of amyotrophic lateral sclerosis (ALS), a neurodegenerative disease associated with an increase of QUIN concentrations in both serum and cerebrospinal fluid. Although EDA was reported to mitigate ALS progression its mode of action is still largely unknown. Some studies reported antioxidant and radical scavenger properties of EDA, but none confirm a direct activity as 3HAO enzyme inhibitor. Since QUIN is reported to be a neurotoxic metabolite, 3HAO inhibition can contribute to the beneficial effect of EDA in ALS, although such a mechanism must be then confirmed in vivo. However, EDA might be a convenient scaffold for the design of selective 3HAO inhibitors with potential applications in ALS treatment.
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Affiliation(s)
- Ines Sanz
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133, Milan, Italy
| | - Alessandra Altomare
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133, Milan, Italy
| | - Giada Mondanelli
- Department of Medicine and Surgery, University of Perugia, Via Gambuli 1, 06132, Perugia, Italy
| | - Michele Protti
- Research group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126, Bologna, Italy
| | - Valeria Valsecchi
- Department of Neuroscience and Reproductive and Odontostomatological Sciences, University of Naples Federico II, Via Pansini 5, 80131, Naples, Italy
| | - Laura Mercolini
- Research group of Pharmaco-Toxicological Analysis (PTA Lab), Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum - University of Bologna, Via Belmeloro 6, 40126, Bologna, Italy
| | - Claudia Volpi
- Department of Medicine and Surgery, University of Perugia, Via Gambuli 1, 06132, Perugia, Italy
| | - Luca Regazzoni
- Department of Pharmaceutical Sciences, University of Milan, Via Mangiagalli 25, 20133, Milan, Italy.
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20
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Pursell ME, Sharif D, DeBastiani A, Li C, Majuta S, Li P, Valentine SJ. Development of cVSSI-APCI for the Improvement of Ion Suppression and Matrix Effects in Complex Mixtures. Anal Chem 2022; 94:9226-9233. [PMID: 35729103 DOI: 10.1021/acs.analchem.1c05136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The new ionization technique termed vibrating sharp-edge spray ionization (cVSSI) has been coupled with corona discharge to investigate atmospheric pressure chemical ionization (APCI) capabilities. The optimized source was evaluated for its ability to enhance ion signal intensity, overcome matrix effects, and limit ion suppression. The results have been compared with state-of-the-art ESI source performance as well as a new APCI-like source. In methanol, the ion signal intensity increased 10-fold and >10-fold for cocaine and the suppressed analytes, respectively. The ability to overcome ion suppression was improved from 2-fold to 16-fold for theophylline and vitamin D2, respectively. For aqueous samples, ion signal levels increased by two orders of magnitude for all analytes. In both solvent systems, the signal-to-noise ratios also increased for all suppressed analytes. One example of the characterization of low-ionizing (by ESI or cVSSI alone) species in the presence of high-ionizing species by direct analysis from a cotton swab is presented. The work is discussed with respect to the advantages of cVSSI-APCI for direct, in situ, and field analyses.
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Affiliation(s)
- Madison E Pursell
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Daud Sharif
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Anthony DeBastiani
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Chong Li
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Sandra Majuta
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Peng Li
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
| | - Stephen J Valentine
- C. Eugene Bennett Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506, United States
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21
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Moro G, Severin Sfragano P, Ghirardo J, Mazzocato Y, Angelini A, Palchetti I, Polo F. Bicyclic peptide-based assay for uPA cancer biomarker. Biosens Bioelectron 2022; 213:114477. [PMID: 35751954 DOI: 10.1016/j.bios.2022.114477] [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: 04/16/2022] [Revised: 06/02/2022] [Accepted: 06/08/2022] [Indexed: 11/02/2022]
Abstract
The use of synthetic bioreceptors to develop biosensing platforms has been recently gaining momentum. This case study compares the performance of a biosensing platform for the human biomarker urokinase-type plasminogen activator (h-uPA) when using two bicyclic peptides (P1 and P2) with different affinities for the target protein. The bioreceptors P1 and P2 were immobilized on magnetic microbeads and tested within a sandwich-type affinity electrochemical assay. Apart from enabling h-uPA quantification at nanomolar levels (105.8 ng/mL for P1 and 32.5 ng/mL for P2), this case study showed the potential of synthetic bicyclic peptides applicability and how bioreceptor affinity can influence the performance of the final sensing platform.
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Affiliation(s)
- Giulia Moro
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
| | - Patrick Severin Sfragano
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Jessica Ghirardo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
| | - Ylenia Mazzocato
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy
| | - Alessandro Angelini
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy; European Centre for Living Technology (ECLT), Ca' Bottacin, Dorsoduro 3911, Calle Crosera, Venice, 30124, Italy
| | - Ilaria Palchetti
- Department of Chemistry "Ugo Schiff", University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy.
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172, Venice, Italy; European Centre for Living Technology (ECLT), Ca' Bottacin, Dorsoduro 3911, Calle Crosera, Venice, 30124, Italy.
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22
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Mkhize B, Kellermann T, Norman J, Castel S, Joubert A, van der Merwe M, Dooley KE, Mathad JS, Wiesner L. Validation and application of a quantitative liquid chromatography tandem mass spectrometry assay for the analysis of rifapentine and 25-O-desacetyl rifapentine in human milk. J Pharm Biomed Anal 2022; 215:114774. [PMID: 35462285 PMCID: PMC9871952 DOI: 10.1016/j.jpba.2022.114774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/28/2022] [Accepted: 04/14/2022] [Indexed: 01/27/2023]
Abstract
A robust analytical method based on liquid chromatography coupled to tandem mass spectrometry was developed and validated to quantify rifapentine and 25-O-desacetyl rifapentine in human breast milk to aid in determining the breastfed infant risk to the excreted drug in human milk. Samples were extracted by a combination of protein precipitation and solid phase extraction using rifampicin-d3 as an internal standard. An Agilent® Poroshell 120 EC-C18 (4.6 mm × 50 mm, 2.7 µm) column was used for chromatographic separation employing an isocratic mobile phase consisting of acetonitrile: methanol: 0.1% formic acid (55/5/40, v/v/v) at a flow rate of 450 µL/min, and with a total run time of four minutes. Mass detection was on an AB Sciex API 4000 mass spectrometer using electrospray ionization in the positive mode and based on multiple reaction monitoring data acquisition. Rifapentine was accurately quantified across a concentration range of 2.00-2000 ng/mL and 25-O-desacetyl rifapentine from 4.00 to 2000 ng/mL. During validation, the inter- and intra-day accuracy and precision at the tested QC concentrations (N = 18) for rifapentine were between 97.4% and 100.6%, and 3.1% and 8.3%, respectively. The inter- and intra-day accuracy and precision for 25-O-desacetyl rifapentine were between 96.4% and 106.3%, and 6.7% and 11.8%, respectively. No significant matrix effects were observed, and the method was shown to be specific for rifapentine and 25-O-desacetyl rifapentine. Human milk samples (N = 22) generated during a phase I/II clinical trial were successfully analysed for rifapentine and 25-O-desacetyl rifapentine using this validated method. Concentrations for rifapentine and 25-O-desacetyl rifapentine in human milk samples (N = 22) ranged from 11.2-1180 ng/mL and 7.11-573 ng/mL, respectively.
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Affiliation(s)
- Buyisile Mkhize
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Tracy Kellermann
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa; Division of Clinical Pharmacology, Department of Medicine, Stellenbosch University, Cape Town, South Africa
| | - Jennifer Norman
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Sandra Castel
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Anton Joubert
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Marthinus van der Merwe
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa
| | - Kelly E Dooley
- Division of Clinical Pharmacology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jyoti S Mathad
- Department of Medicine and Obstetrics and Gynecology, Center for Global Health, Weill Cornell Medicine, New York, NY, USA
| | - Lubbe Wiesner
- Division of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa.
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23
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Supercritical fluid chromatography time-of-flight mass spectrometry enantiomeric determination of basic drugs in sewage samples. J Chromatogr A 2022; 1673:463088. [DOI: 10.1016/j.chroma.2022.463088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/21/2022] [Accepted: 04/23/2022] [Indexed: 11/17/2022]
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24
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Godage NH, Gionfriddo E. Biocompatible SPME coupled to GC/MS for analysis of xenobiotics in blood plasma. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1203:123308. [DOI: 10.1016/j.jchromb.2022.123308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 05/11/2022] [Accepted: 05/16/2022] [Indexed: 10/18/2022]
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25
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Solid-phase extraction and fractionation of multiclass pollutants from wastewater followed by liquid chromatography tandem-mass spectrometry analysis. Anal Bioanal Chem 2022; 414:4149-4165. [PMID: 35461386 PMCID: PMC9124662 DOI: 10.1007/s00216-022-04066-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 04/01/2022] [Accepted: 04/05/2022] [Indexed: 11/30/2022]
Abstract
Herein, we describe a modular solid-phase extraction (SPE) setup, combining three sorbents, for the effective extraction of neutrals, acidic, and basic micropollutants from wastewater, followed by their further elution in three independent extracts. The performance of this approach was demonstrated for a suite of 64 compounds, corresponding to different chemical families, using liquid chromatography tandem-mass spectrometry (LC–MS/MS). Target compounds were effectively extracted from wastewater samples; moreover, 62 out of 64 species were isolated in just one of the three fractions (neutrals, acids, and bases) obtained from the combination of sorbents. Globally, the efficiency and the selectivity of the SPE methodology improved the features obtained using generic SPE polymers, displaying just reversed-phase interactions. The overall recoveries of the analytical method, calculated against solvent-based calibration standards, stayed between 80 and 120% for 57 and 60 compounds, in raw and treated wastewater, respectively. Procedural limits of quantification (LOQs) varied from 1 to 20 ng L−1. Analysis of urban wastewater samples identified a group of 19 pollutants showing either negligible median removal efficiencies (± 20%) during wastewater treatment, or even a noticeable enhancement (case of the biodegradation product of the drug valsartan), which might be useful as markers of wastewater discharges in the aquatic environment.
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de Jager S, Blancquaert L, Van der Stede T, Lievens E, De Baere S, Croubels S, Gilardoni E, Regazzoni LG, Aldini G, Bourgois JG, Derave W. The ergogenic effect of acute carnosine and anserine supplementation: dosing, timing, and underlying mechanism. J Int Soc Sports Nutr 2022; 19:70-91. [PMID: 35599917 PMCID: PMC9116398 DOI: 10.1080/15502783.2022.2053300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Background Recent studies suggest that acute-combined carnosine and anserine supplementation has the potential to improve the performance of certain cycling protocols. Yet, data on optimal dose, timing of ingestion, effective exercise range, and mode of action are lacking. Three studies were conducted to establish dosing and timing guidelines concerning carnosine and anserine intake and to unravel the mechanism underlying the ergogenic effects. Methods First, a dose response study A was conducted in which 11 men randomly received placebo, 10, 20, or 30 mg.kg−1 of both carnosine and anserine. They performed 3x maximal voluntary isometric contractions (MVC), followed by a 5 x 6 s repeated cycling sprint ability test (RSA), once before the supplement and 30 and 60 minutes after. In a second study, 15 men performed 3x MVCs with femoral nerve electrical stimulation, followed by an RSA test, once before 30 mg.kg−1 carnosine and anserine and 60 minutes after. Finally, in study C, eight men performed a high intensity cycling training after randomly ingesting 30 mg.kg−1 of carnosine and anserine, a placebo or antihistamines (reduce post-exercise blood flow) to investigate effects on muscle perfusion. Results Study A showed a 3% peak power (p = 0.0005; 95% CI = 0.07 to 0.27; ES = 0.91) and 4.5% peak torque (p = 0.0006; 95% CI = 0.12 to 0.50; ES = 0.87) improvement on RSA and MVC, with 30 mg.kg−1 carnosine + anserine ingestion 60 minutes before the performance yielding the best results. Study B found no performance improvement on group level; however, a negative correlation (r = −0.54; p = 0.0053; 95% CI = −0.77 to −0.19) was found between carnosinase enzyme activity (responsible for carnosine and anserine breakdown) and performance improvement. No effect of the supplement on neuromuscular function nor on muscle perfusion was found. Conclusions These studies reveal that acute ingestion of 30 mg.kg−1 of both carnosine and anserine, 60 minutes before a high intensity exercise, can potentially improve performance, such as short cycling sprints or maximal muscle contractions. Subjects with lower carnosinase activity, and thus a slower breakdown of circulating dipeptides, appear to benefit more from this ergogenic effect. Finally, neither the involvement of a direct effect on neuromuscular function, nor an indirect effect on recovery through increased muscle perfusion could be confirmed as potential mechanism of action. The ergogenic mechanism therefore remains elusive.
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Affiliation(s)
- Sarah de Jager
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Laura Blancquaert
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | | | - Eline Lievens
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Siegrid De Baere
- Department of Pharmacology, Toxicology and Biochemistry, Ghent University, Merelbeke, Belgium
| | - Siska Croubels
- Department of Pharmacology, Toxicology and Biochemistry, Ghent University, Merelbeke, Belgium
| | - Ettore Gilardoni
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | - Luca G. Regazzoni
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | - Giancarlo Aldini
- Department of Pharmaceutical Sciences, University of Milan, Milan, Italy
| | - Jan G. Bourgois
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
| | - Wim Derave
- Department of Movement and Sports Sciences, Ghent University, Ghent, Belgium
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Kumar D, Gautam N, Alnouti Y. Analyte recovery in LC-MS/MS bioanalysis: An old issue revisited. Anal Chim Acta 2022; 1198:339512. [PMID: 35190119 PMCID: PMC8864627 DOI: 10.1016/j.aca.2022.339512] [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: 11/17/2021] [Revised: 01/04/2022] [Accepted: 01/15/2022] [Indexed: 11/24/2022]
Abstract
There are several challenges associated with LC-MS/MS bioanalytical method development and validation. Low and variable recovery of some analytes, especially the more hydrophobic ones, is often challenging. Analytes can be lost to various extents throughout the process of sample collection, storage, before, during, and/or after sample preparation and analysis. The calculation of overall extraction recovery can detect problems of low recovery during sample preparation but does not identify the source(s) of analyte losses. Low overall analyte recovery is the net result of losses that can happen for multiple reasons at all steps of sample preparation and analysis. Therefore, identifying the source(s) of analyte loss during sample preparation can help guide the optimization the bioanalysis conditions to minimize these losses. In this article we propose a practical protocol to systematically identify and quantify the sources of low analyte recovery. This allows the proper choice of strategies to optimize the relevant bioanalytical conditions to minimize analyte losses and improve overall recovery.
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Affiliation(s)
- Devendra Kumar
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
| | - Nagsen Gautam
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
| | - Yazen Alnouti
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
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Bodnar-Broniarczyk M, Warzyszyńska K, Czerwińska K, Marszałek D, Dziewa N, Kosieradzki M, Pawiński T. Development and Validation of the New Liquid Chromatography-Tandem Mass Spectrometry Method for the Determination of Unbound Tacrolimus in the Plasma Ultrafiltrate of Transplant Recipients. Pharmaceutics 2022; 14:pharmaceutics14030632. [PMID: 35336007 PMCID: PMC8951301 DOI: 10.3390/pharmaceutics14030632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/06/2022] [Accepted: 03/10/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Only unbound tacrolimus particles are considered to be active and capable of crossing cellular membranes. Thus, the free-drug concentration might be better associated with clinical effects than the total drug concentration used for dosage adjustment. We propose a new, fully validated online liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for unbound tacrolimus concentration measurement. (2) Methods: The determination of the unbound tacrolimus concentration in plasma ultrafiltrate was performed with the Nexera LC system with LCMS-8050 triple quadrupole MS using ascomycin as an internal standard. Chromatographic separation was made using a HypurityC18 analytical column. MS/MS with electrospray ionization and positive-ion multiple-reaction monitoring was used. The unbound tacrolimus level was determined in 36 patients after solid organ transplantation (n = 140). (3) Results: A lower limit of quantification 0.1 pg/mL was achieved, and the assay was linear between 0.1 and 20 pg/mL (R2 = 0.991). No carry-over was detected. The within-run and between-run accuracies ranged between 97.8–109.7% and 98.3–107.1%, while the greatest imprecision was 10.6% and 10.7%, respectively. Free tacrolimus in patients’ plasma ultrafiltrate varied between 0.06 and 18.25 pg/mL (median: 0.98 pg/mL). (4) Conclusions: The proposed method can be easily implemented. The significance of the unbound tacrolimus concentration needs to be investigated. This may facilitate the individualization and optimization of immunosuppressive treatment.
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Affiliation(s)
- Magdalena Bodnar-Broniarczyk
- Department of Drug Chemistry, Medical University of Warsaw, 02-097 Warsaw, Poland; (D.M.); (T.P.)
- Correspondence: (M.B.-B.); (K.W.); Tel.: +48-22-572-06-30 (M.B.-B.); +48-22-502-17-84 (K.W.)
| | - Karola Warzyszyńska
- Department of General and Transplantation Surgery, Medical University of Warsaw, 02-014 Warsaw, Poland; (N.D.); (M.K.)
- Correspondence: (M.B.-B.); (K.W.); Tel.: +48-22-572-06-30 (M.B.-B.); +48-22-502-17-84 (K.W.)
| | - Katarzyna Czerwińska
- Department of Transplantation Medicine and Nephrology, Medical University of Warsaw, 02-014 Warsaw, Poland;
| | - Dorota Marszałek
- Department of Drug Chemistry, Medical University of Warsaw, 02-097 Warsaw, Poland; (D.M.); (T.P.)
| | - Natalia Dziewa
- Department of General and Transplantation Surgery, Medical University of Warsaw, 02-014 Warsaw, Poland; (N.D.); (M.K.)
| | - Maciej Kosieradzki
- Department of General and Transplantation Surgery, Medical University of Warsaw, 02-014 Warsaw, Poland; (N.D.); (M.K.)
| | - Tomasz Pawiński
- Department of Drug Chemistry, Medical University of Warsaw, 02-097 Warsaw, Poland; (D.M.); (T.P.)
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Li Y, Nie J, Zhang J, Xu G, Zhang H, Liu M, Gao X, Shah BSA, Yin N. Chiral fungicide penconazole: Absolute configuration, bioactivity, toxicity, and stereoselective degradation in apples. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 808:152061. [PMID: 34861299 DOI: 10.1016/j.scitotenv.2021.152061] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/09/2021] [Accepted: 11/25/2021] [Indexed: 06/13/2023]
Abstract
Traditional evaluation of chiral pesticides can lead to inaccurate results, as their enantiomers may show different properties. Penconazole, a chiral triazole fungicide with two enantiomers, is widely applied to protect against phytopathogens. In this study, its absolute configuration, bioactivity, ecotoxicity, and stereoselective degradation were investigated at the enantiomeric level in detail. The absolute configuration of the two enantiomers (R-(+)-penconazole and S-(-)-penconazole) was first confirmed by electronic circular dichroism (ECD), and their enantioseparation method was developed and optimized using UPLC-MS/MS. S-(-)-penconazole showed high bioactivity, as its fungicidal activity against four target phytopathogens (Alternaria alternate f. sp. mali, Botryosphaeria berengeriana f. sp. piricola, Colletotrichum gloeosporioides, and Fusarium oxysporum) was 1.8-4.4 times higher than that of R-(+)-penconazole. The results of an acute toxicity test showed that the LC50 values of S-(-)-penconazole against Daphnia magna were 32.5 times higher than those of R-(+)-penconazole at 24 h during the test period. Stereoselective degradation behaviors were found in nonbagging and bagging Fuji apples collected from three major apple-producing regions in China, with half-lives of 23.5-51.6 d (nonbagging treatment) and 23.0-57.5 d (bagging treatment) for R-(+)-penconazole and 41.1-60.9 d (nonbagging treatment) and 52.5-91.2 d (bagging treatment) for S-(+)-penconazole, respectively. This study provided new insights into the bioactivity, ecotoxicity, and stereoselective degradation of penconazole enantiomers. The above results also emphasized the importance of risk assessments of chiral pesticides at the enantiomeric level.
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Affiliation(s)
- Ye Li
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, China.
| | - Jiyun Nie
- College of Horticulture, Qingdao Agricultural University, Qingdao 266109, China; Laboratory of Quality & Safety Risk Assessment for Fruit (Qingdao), Ministry of Agriculture and Rural Affairs, Qingdao 266109, China; National Technology Centre for Whole Process Quality Control of FSEN Horticultural Products (Qingdao), Qingdao 266109, China; Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, China.
| | - Jia Zhang
- Xuzhou Institute of Agricultural Sciences of Xuhuai District of Jiangsu Province, 221000, China.
| | - Guofeng Xu
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, China.
| | - Hui Zhang
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, China.
| | - Mingyu Liu
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, China.
| | - Xiaoqin Gao
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, China.
| | - Bacha Syde Asim Shah
- Institute of Pomology, Chinese Academy of Agricultural Sciences/Laboratory of Quality & Safety Risk Assessment for Fruit (Xingcheng), Ministry of Agriculture and Rural Affairs, Xingcheng 125100, China.
| | - Ning Yin
- Center for Modern Agricultural Development Service, 033000, China
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30
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Maspero M, Gilardoni E, Bonfanti C, Messina G, Regazzoni L, De Amici M, Carini M, Aldini G, Dallanoce C. Synthesis and characterization of 13C labeled carnosine derivatives for isotope dilution mass spectrometry measurements in biological matrices. Talanta 2021; 235:122742. [PMID: 34517610 DOI: 10.1016/j.talanta.2021.122742] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 07/23/2021] [Accepted: 07/24/2021] [Indexed: 10/20/2022]
Abstract
Due to the physiological properties of l-carnosine (l-1), supplementation of this dipeptide has both a nutritional ergogenic application and a therapeutic potential for the treatment of numerous diseases in which ischemic or oxidative stress are involved. Quantitation of carnosine and its analogs in biological matrices results to be crucial for these applications and HPLC-MS procedures with isotope-labeled internal standards are the state-of-the-art approach for this analytical need. The use of these standards allows to account for variations during the sample preparation process, between-sample matrix effects, and variations in instrument performance over analysis time. Although literature reports a number of studies involving carnosine, isotope-labeled derivatives of the dipeptide are not commercially available. In this work we present a fast, flexible, and convenient strategy for the synthesis of the 13C-labeled carnosine analogs and their application as internal standards for the quantitation of carnosine and anserine in a biological matrix.
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Affiliation(s)
- Marco Maspero
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section "Pietro Pratesi", University of Milan, Via L. Mangiagalli 25, 20133, Milan, Italy
| | - Ettore Gilardoni
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section "Pietro Pratesi", University of Milan, Via L. Mangiagalli 25, 20133, Milan, Italy
| | - Chiara Bonfanti
- Department of BioSciences, University of Milan, Via Celoria 26, 20133, Milan, Italy
| | - Graziella Messina
- Department of BioSciences, University of Milan, Via Celoria 26, 20133, Milan, Italy
| | - Luca Regazzoni
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section "Pietro Pratesi", University of Milan, Via L. Mangiagalli 25, 20133, Milan, Italy
| | - Marco De Amici
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section "Pietro Pratesi", University of Milan, Via L. Mangiagalli 25, 20133, Milan, Italy
| | - Marina Carini
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section "Pietro Pratesi", University of Milan, Via L. Mangiagalli 25, 20133, Milan, Italy
| | - Giancarlo Aldini
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section "Pietro Pratesi", University of Milan, Via L. Mangiagalli 25, 20133, Milan, Italy
| | - Clelia Dallanoce
- Department of Pharmaceutical Sciences, Medicinal Chemistry Section "Pietro Pratesi", University of Milan, Via L. Mangiagalli 25, 20133, Milan, Italy.
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31
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Lech K, Nawała J, Popiel S. Mass Spectrometry for Investigation of Natural Dyes in Historical Textiles: Unveiling the Mystery behind Safflower-Dyed Fibers. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:2552-2566. [PMID: 34478285 PMCID: PMC8499024 DOI: 10.1021/jasms.1c00195] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 08/05/2021] [Accepted: 08/25/2021] [Indexed: 06/13/2023]
Abstract
Safflower (Carthamus tinctorius L.) petals, depending on the nature of a dyeing bath, dye fibers yellow or red. This is due to the presence of two kinds of components, water-soluble yellow colorants and alkali-soluble red compounds. In this study, safflower-yellow- and safflower-red-dyed silk, cotton, and wool fibers were investigated using high- or ultrahigh-performance liquid chromatography hyphenated with spectrophotometry and tandem mass spectrometry (HPLC-UV-vis-ESI-MS/MS) and high-resolution Orbitrap mass spectrometry (HPLC-HESI-HRMS) in order to identify the natural dye in historical textiles. This way, several quinochalcone C-glycosides were separated and characterized. Their low- and high-resolution MS/MS spectra expanded the database of natural colorants in cultural heritage objects. Moreover, the colorless ct-markers (with a hitherto unknown structure) present in all safflower-dyed fabrics, regardless of the color or preservation conditions, were revealed to be E/Z stereoisomers of N1,N5,N10-tri-p-coumaroylspermidine. Since most of the standards was not available, discussion on possible molecular structures was provided. As a consequence, the analytical investigation of the reference fibers dyed with safflower demonstrated that the dye composition varies, depending on the dyeing conditions and type of fiber. Moreover, it was proven that carthamin, although alkali soluble, can be successfully released with a mild extraction method, without its hydrolysis under these conditions. The results helped us to characterize threads sampled from 16th to 18thcentury textiles of European and Near Eastern origin. It has completed the picture of natural dyes used in the most valuable textiles availed in liturgical vestments from the collections of Krakow churches.
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Affiliation(s)
- Katarzyna Lech
- Faculty
of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland
| | - Jakub Nawała
- Military
University of Technology, Institute of Chemistry, Gen. S. Kaliskiego 2, 00-908 Warsaw, Poland
| | - Stanisław Popiel
- Military
University of Technology, Institute of Chemistry, Gen. S. Kaliskiego 2, 00-908 Warsaw, Poland
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32
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Parsons TL, Kryszak LA, Marzinke MA. Development and validation of assays for the quantification of β-D-N 4-hydroxycytidine in human plasma and β-D-N 4-hydroxycytidine-triphosphate in peripheral blood mononuclear cell lysates. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1182:122921. [PMID: 34555541 PMCID: PMC8411588 DOI: 10.1016/j.jchromb.2021.122921] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 12/05/2022]
Abstract
The novel antiviral prodrug molnupiravir is under evaluation for the treatment of SARS-CoV-2. Molnupiravir is converted to β-D-N4-hydroxycytidine (NHC), which is the primary form found in systemic circulation. β-D-N4-hydroxycytidine-triphosphate (NHCtp) is the bioactive anabolite produced intracellularly. Sensitive and accurate bioanalytical methods are required to characterize NHC and NHCtp pharmacokinetics in clinical trials. Human K2EDTA plasma or peripheral blood mononuclear cell (PBMC) lysates were spiked with NHC (plasma) or NHCtp (PBMC), respectively. Following the addition of isotopically-labeled internal standards and sample extraction via protein precipitation or lysate dilution, respectively, samples were subjected to liquid chromatographic-tandem mass spectrometric (LC-MS/MS) analysis. Methods were validated in accordance with FDA Bioanalytical Method Validation recommendations. NHC can be quantified in plasma with a lower limit of quantification (LLOQ) of 1 ng/mL; the primary linearity of the assay is 1–5000 ng/mL. Assay precision and accuracy were ≤ 6.40% and ≤ ± 6.37%, respectively. NHC is unstable in whole blood and has limited stability in plasma at room temperature. The calibration range for NHCtp in PBMC lysates is 1–1500 pmol/sample, and the assay has an LLOQ of 1 pmol/sample. Assay precision and accuracy were ≤ 11.8% and ≤± 11.2%. Ion suppression was observed for both analytes; isotopically-labeled internal standards showed comparable ion suppression, resulting in negligible (<5%) relative matrix effects. Sensitive, specific, and dynamic LC-MS/MS assays have been developed and validated for the quantification of NHC in plasma and NHCtp in PBMC lysates. The described methods are appropriate for use in clinical trials.
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Affiliation(s)
- Teresa L Parsons
- Department of Medicine, Johns Hopkins University, 5200 Eastern Ave, Mason F. Lord Tower, Suite 6000, Baltimore, MD 21224, USA
| | - Lindsay A Kryszak
- Department of Medicine, Johns Hopkins University, 5200 Eastern Ave, Mason F. Lord Tower, Suite 6000, Baltimore, MD 21224, USA
| | - Mark A Marzinke
- Department of Medicine, Johns Hopkins University, 5200 Eastern Ave, Mason F. Lord Tower, Suite 6000, Baltimore, MD 21224, USA; Department of Pathology, Johns Hopkins University, 1800 Orleans St., Sheikh Zayed Tower, Baltimore MD 21287, USA.
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33
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Taylor AL, Davis DE, Codreanu SG, Harrison FE, Sherrod SD, McLean JA. Targeted and Untargeted Mass Spectrometry Reveals the Impact of High-Fat Diet on Peripheral Amino Acid Regulation in a Mouse Model of Alzheimer's Disease. J Proteome Res 2021; 20:4405-4414. [PMID: 34382806 DOI: 10.1021/acs.jproteome.1c00344] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Recent research regarding amino acid metabolism has shown that there may be a link between obesity and Alzheimer's disease (AD). This work reports a metabolomics study using targeted and untargeted mass spectrometry-based metabolomic strategies to investigate this link. Targeted hydrophilic interaction liquid chromatography-triple quadrupole mass spectrometry and untargeted reversed-phase liquid chromatography-high resolution tandem mass spectrometry assays were developed to analyze the metabolic changes that occur in AD and obesity. APPSwe/PS1ΔE9 (APP/PSEN1) transgenic mice (to represent familial or early-onset AD) and wild-type littermate controls were fed either a high-fat diet (HFD, 60% kcal from lard) or a low-fat diet (LFD, 10% kcal from lard) from 2 months of age or a reversal diet (HFD, followed by LFD from 9.5 months). For targeted analyses, we applied the guidelines outlined in the Clinical and Laboratory Standards Institute (CLSI) LC-MS C62-A document and the U.S. Food and Drug Administration (FDA) bioanalytical method validation guidance for industry to evaluate the figures of merit of the assays. Our targeted and untargeted metabolomics results suggest that numerous peripheral pathways, specifically amino acid metabolism and fatty acid metabolism, were significantly affected by AD and diet. Multiple amino acids (including alanine, glutamic acid, leucine, isoleucine, and phenylalanine), carnitines, and members of the fatty acid oxidation pathway were significantly increased in APP/PSEN1 mice on HFD compared to those on LFD. More substantial effects and changes were observed in the APP/PSEN1 mice than in the WT mice, suggesting that they were more sensitive to an HFD. These dysregulated peripheral pathways include numerous amino acid pathways and fatty acid beta oxidation and suggest that obesity combined with AD further enhances cognitive impairment, possibly through aggravated mitochondrial dysfunction. Furthermore, partial reversibility of many altered pathways was observed, which highlights that diet change can mitigate the metabolic effects of AD. The same trends in individual amino acids were observed in both strategies, highlighting the biological validity of the results.
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Affiliation(s)
- Amelia L Taylor
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Don E Davis
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Simona G Codreanu
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States.,Center for Innovative Technology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Fiona E Harrison
- Vanderbilt University Medical Center, Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University Medical Center, Nashville, Tennessee 37235, United States
| | - Stacy D Sherrod
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States.,Center for Innovative Technology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - John A McLean
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States.,Center for Innovative Technology, Vanderbilt University, Nashville, Tennessee 37235, United States
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34
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Egan JM, van Santen JA, Liu DY, Linington RG. Development of an NMR-Based Platform for the Direct Structural Annotation of Complex Natural Products Mixtures. JOURNAL OF NATURAL PRODUCTS 2021; 84:1044-1055. [PMID: 33750122 PMCID: PMC8330833 DOI: 10.1021/acs.jnatprod.0c01076] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The development of new "omics" platforms is having a significant impact on the landscape of natural products discovery. However, despite the advantages that such platforms bring to the field, there remains no straightforward method for characterizing the chemical landscape of natural products libraries using two-dimensional nuclear magnetic resonance (2D-NMR) experiments. NMR analysis provides a powerful complement to mass spectrometric approaches, given the universal coverage of NMR experiments. However, the high degree of signal overlap, particularly in one-dimensional NMR spectra, has limited applications of this approach. To address this issue, we have developed a new data analysis platform for complex mixture analysis, termed MADByTE (Metabolomics and Dereplication by Two-Dimensional Experiments). This platform employs a combination of TOCSY and HSQC spectra to identify spin system features within complex mixtures and then matches spin system features between samples to create a chemical similarity network for a given sample set. In this report we describe the design and construction of the MADByTE platform and demonstrate the application of chemical similarity networks for both the dereplication of known compound scaffolds and the prioritization of bioactive metabolites from a bacterial prefractionated extract library.
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Affiliation(s)
- Joseph M Egan
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Jeffrey A van Santen
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Dennis Y Liu
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
| | - Roger G Linington
- Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada
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Zhao A, Zhang L, Zhang X, Edirisinghe I, Burton-Freeman BM, Sandhu AK. Comprehensive Characterization of Bile Acids in Human Biological Samples and Effect of 4-Week Strawberry Intake on Bile Acid Composition in Human Plasma. Metabolites 2021; 11:99. [PMID: 33578858 PMCID: PMC7916557 DOI: 10.3390/metabo11020099] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 02/01/2021] [Accepted: 02/04/2021] [Indexed: 12/12/2022] Open
Abstract
Primary bile acids (BAs) and their gut microbial metabolites have a role in regulating human health. Comprehensive characterization of BAs species in human biological samples will aid in understanding the interaction between diet, gut microbiota, and bile acid metabolism. Therefore, we developed a qualitative method using ultra-high performance liquid chromatography (UHPLC) coupled with a quadrupole time-of-flight (Q-TOF) to identify BAs in human plasma, feces, and urine samples. A quantitative method was developed using UHPLC coupled with triple quadrupole (QQQ) and applied to a previous clinical trial conducted by our group to understand the bile acid metabolism in overweight/obese middle-aged adults (n = 34) after four weeks strawberry vs. control intervention. The qualitative study tentatively identified a total of 81 BAs in human biological samples. Several BA glucuronide-conjugates were characterized for the first time in human plasma and/or urine samples. The four-week strawberry intervention significantly reduced plasma concentrations of individual secondary BAs, deoxycholic acid, lithocholic acid and their glycine conjugates, as well as glycoursodeoxycholic acid compared to control (p < 0.05); total glucuronide-, total oxidized-, total dehydroxyl-, total secondary, and total plasma BAs were also lowered compared to control (p < 0.05). The reduced secondary BAs concentrations suggest that regular strawberry intake modulates the microbial metabolism of BAs.
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Affiliation(s)
| | | | | | | | | | - Amandeep K. Sandhu
- Department of Food Science and Nutrition and Center for Nutrition Research, Institute for Food Safety and Health, Illinois Institute of Technology, Chicago, IL 60616, USA; (A.Z.); (L.Z.); (X.Z.); (I.E.); (B.M.B.-F.)
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Mishra A, Chhonker YS, Bisen AC, Prasad YD, Tulsankar SL, Chandasana H, Dey T, Verma SK, Bala V, Kanojiya S, Ghatak S, Bhatta RS. Rapid and Simultaneous Analysis of Multiple Classes of Antimicrobial Drugs by Liquid Chromatography-Tandem Mass Spectrometry and Its Application to Routine Biomedical, Food, and Soil Analyses. ACS OMEGA 2020; 5:31584-31597. [PMID: 33344811 PMCID: PMC7745213 DOI: 10.1021/acsomega.0c03863] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 11/20/2020] [Indexed: 06/12/2023]
Abstract
Antimicrobial agents (AMAs) are widely exploited nowadays to meet the high demand for animal-derived food. It has a significant impact on the food chain whose end consumers are human beings. The burden of AMAs on humans comes from either meat or crops cultivated on soil containing high residual antibiotics, which are responsible for the global crisis of antibiotic resistance. Thus, the objective of this study was to design a selective and sensitive liquid chromatography-mass spectrometry (LC-MS)/MS-based simultaneous bioanalytical method for estimation of twenty AMAs in human plasma, raw meat, and soil samples. The selective extraction of all analytes from the above matrices was performed by the solid-phase extraction clean-up method to overcome the interferences. Analytes were separated on a Waters Symmetry Shield C18 (150 × 4.6 mm2, 5 μm) column, using an isocratic solvent system of methanol-0.5% formic acid (80:20, v/v) with 0.75 mL/min flow rate. The average extraction recoveries for all analytes in plasma were ranged from 42.0 to 94.0% with relative standard deviations (RSDs) below ±15%. All of the validation parameters are in accordance with the United State Food and Drug Administration (USFDA) guidelines. Moreover, the method was also valid for a broad plasma concentration range and can be proposed as an excellent method for routine pharmacokinetic studies, therapeutic drug monitoring, clinical analysis, and detection and quantitation of AMA remnants in raw meat as a standard quality control test for human consumption.
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Affiliation(s)
- Anjali Mishra
- Pharmaceutics
& Pharmacokinetics Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
- Academy
of Scientific & Innovative Research (AcSIR), Anusandhan Bhawan, Rafi Marg, New Delhi 110 001, India
| | - Yashpal Singh Chhonker
- Pharmaceutics
& Pharmacokinetics Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
| | - Amol Chhatrapati Bisen
- Pharmaceutics
& Pharmacokinetics Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
| | - Yarra Durga Prasad
- Pharmaceutics
& Pharmacokinetics Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
| | - Sachin Laxman Tulsankar
- Pharmaceutics
& Pharmacokinetics Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
- Academy
of Scientific & Innovative Research (AcSIR), Anusandhan Bhawan, Rafi Marg, New Delhi 110 001, India
| | - Hardik Chandasana
- Pharmaceutics
& Pharmacokinetics Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
- Academy
of Scientific & Innovative Research (AcSIR), Anusandhan Bhawan, Rafi Marg, New Delhi 110 001, India
| | - Tushar Dey
- Division
of Animal Health, ICAR Research Complex
for North Eastern Hill Region, Meghalaya 793103, India
| | - Sarvesh Kumar Verma
- Pharmaceutics
& Pharmacokinetics Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
- Jawaharlal
Nehru University, New Delhi 110001, India
| | - Veenu Bala
- Academy
of Scientific & Innovative Research (AcSIR), Anusandhan Bhawan, Rafi Marg, New Delhi 110 001, India
- Medicinal
& Process Chemistry Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
| | - Sanjeev Kanojiya
- Sophisticated
Analytical Instruments Facility, CSIR-Central
Drug Research Institute, Lucknow 226031, India
| | - Sandeep Ghatak
- Division
of Animal Health, ICAR Research Complex
for North Eastern Hill Region, Meghalaya 793103, India
| | - Rabi Sankar Bhatta
- Pharmaceutics
& Pharmacokinetics Division, CSIR-Central
Drug Research Institute, Lucknow 226031, India
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Kricka LJ, Cornish TC, Park JY. Eponyms in clinical chemistry. Clin Chim Acta 2020; 512:28-32. [PMID: 33242467 DOI: 10.1016/j.cca.2020.11.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/11/2020] [Accepted: 11/11/2020] [Indexed: 10/22/2022]
Abstract
BACKGROUND Eponyms are commonly used in medicine, but there are no specific studies of the use of eponyms in clinical chemistry. METHODS Clinical chemistry eponyms were manually collected from books, review articles and journal articles from 1847 through 2020. Eponym usage was examined by searching titles and abstracts in PubMed. Custom Python scripts were used to first permute eponyms into multiple forms, and then to search PubMed using Biopython. The eponyms identified in PubMed were further focused on 2 clinical chemistry journals Clinica Chimica Acta [CCA] and Clinical Chemistry [CCJ]. RESULTS The manual collection identified >300 eponyms in clinical chemistry. The Biopython search of PubMed identified a subset of 97 unique eponyms in 33,232 articles. PubMed identified 26 eponyms used in 130 CCA articles; whereas a full-text search identified 1187 articles. In comparison, PubMed identified 36 eponyms used in 158 CCJ articles; whereas a full-text CCJ search identified 708 articles. PubMed shows that the journals CCA and CCJ had a peak number of eponym citations in 1977 followed by a steady decline. CONCLUSIONS Eponyms have been frequently used in clinical chemistry with 97 eponyms in common use in PubMed. Overall, the use of clinical chemistry eponyms appears to be declining.
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Affiliation(s)
- Larry J Kricka
- Department of Pathology & Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States.
| | - Toby C Cornish
- Department of Pathology, University of Colorado School of Medicine, Aurora, CO, United States
| | - Jason Y Park
- Department of Pathology and the Eugene McDermott Center for Human Growth and Development, Children's Medical Center, and University of Texas Southwestern Medical School, Dallas, TX, United States
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Danaceau JP, Wood M, Ehlers M, Rosano TG. Analysis of 17 fentanyls in plasma and blood by UPLC-MS/MS with interpretation of findings in surgical and postmortem casework. CLINICAL MASS SPECTROMETRY (DEL MAR, CALIF.) 2020; 18:38-47. [PMID: 34820524 PMCID: PMC8601016 DOI: 10.1016/j.clinms.2020.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 10/21/2020] [Accepted: 10/23/2020] [Indexed: 11/17/2022]
Abstract
The opioid crisis is linked to an increased misuse of fentanyl as well as fentanyl analogs that originate from the illicit drug market. Much of our current understanding of fentanyl and fentanyl analog use in our communities comes from postmortem toxicology findings. In the clinical settings of addiction medicine and pain management, where the opioid abuse potential is high, the use of fentanyl, as well as specific fentanyl analogs, may be underestimated due to limited plasma testing and limited availability of assays with suitable analytical sensitivity and selectivity to detect misuse of fentanyls. We report plasma and blood assays for 17 fentanyls (these include fentanyl, fentanyl analogs, fentanyl metabolites and synthetic precursors) in clinical, and medical examiner, casework. A mixed-mode solid phase extraction of diluted plasma or precipitated blood was optimized for maximum recovery of the fentanyls with minimized matrix effects. Analysis was performed using a Waters ACQUITY UPLC I-Class interfaced with a Waters Xevo TQ-S micro tandem quadrupole mass spectrometer. Method parameters were optimized and validated for precision, accuracy, carryover, linearity and matrix effects. Application studies were performed in postmortem blood obtained in 44 fentanyl-related fatalities and in serial plasma samples from 18 surgical patients receiving intravenous fentanyl therapy while undergoing parathyroidectomy. Fentanyls found in postmortem cases included fentanyl, norfentanyl, despropionyl-fentanyl (4-ANPP), beta-hydroxy fentanyl (β-OH fentanyl), acetyl fentanyl, acetyl norfentanyl, methoxyacetyl fentanyl, furanyl fentanyl, cyclopropyl fentanyl, and para-fluorobutyryl fentanyl, with fentanyl, norfentanyl, 4-ANPP and β-OH fentanyl predominating in frequency. Fentanyl concentrations ranged from 0.2 to 56 ng/mL and fentanyl was nearly always found with 4-ANPP, norfentanyl and β-OH fentanyl. Concentrations of other fentalogs ranged from <1 to 84 ng/mL (extrapolated). In the surgical cases, fentanyl was detected and quantified along with norfentanyl and β-OH fentanyl, but without detection of 4-ANPP in any of the samples. The association and relative concentrations of β-OH fentanyl, fentanyl and norfentanyl in the postmortem and clinical studies indicated a metabolic, rather than an illicit, source of β-OH fentanyl.
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Affiliation(s)
| | | | | | - Thomas G Rosano
- Albany Medical Center (AMC), Albany, NY, USA
- National Toxicology Center, Albany NY, USA
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Wu CT, Wang Y, Wang Y, Ebbels T, Karaman I, Graça G, Pinto R, Herrington DM, Wang Y, Yu G. Targeted realignment of LC-MS profiles by neighbor-wise compound-specific graphical time warping with misalignment detection. Bioinformatics 2020; 36:2862-2871. [PMID: 31950989 DOI: 10.1093/bioinformatics/btaa037] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 12/27/2019] [Accepted: 01/15/2020] [Indexed: 12/17/2022] Open
Abstract
MOTIVATION Liquid chromatography-mass spectrometry (LC-MS) is a standard method for proteomics and metabolomics analysis of biological samples. Unfortunately, it suffers from various changes in the retention times (RT) of the same compound in different samples, and these must be subsequently corrected (aligned) during data processing. Classic alignment methods such as in the popular XCMS package often assume a single time-warping function for each sample. Thus, the potentially varying RT drift for compounds with different masses in a sample is neglected in these methods. Moreover, the systematic change in RT drift across run order is often not considered by alignment algorithms. Therefore, these methods cannot effectively correct all misalignments. For a large-scale experiment involving many samples, the existence of misalignment becomes inevitable and concerning. RESULTS Here, we describe an integrated reference-free profile alignment method, neighbor-wise compound-specific Graphical Time Warping (ncGTW), that can detect misaligned features and align profiles by leveraging expected RT drift structures and compound-specific warping functions. Specifically, ncGTW uses individualized warping functions for different compounds and assigns constraint edges on warping functions of neighboring samples. Validated with both realistic synthetic data and internal quality control samples, ncGTW applied to two large-scale metabolomics LC-MS datasets identifies many misaligned features and successfully realigns them. These features would otherwise be discarded or uncorrected using existing methods. The ncGTW software tool is developed currently as a plug-in to detect and realign misaligned features present in standard XCMS output. AVAILABILITY AND IMPLEMENTATION An R package of ncGTW is freely available at Bioconductor and https://github.com/ChiungTingWu/ncGTW. A detailed user's manual and a vignette are provided within the package. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Chiung-Ting Wu
- Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Arlington, VA 22203, USA
| | - Yizhi Wang
- Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Arlington, VA 22203, USA
| | - Yinxue Wang
- Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Arlington, VA 22203, USA
| | - Timothy Ebbels
- Section of Bioinformatics, Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK
| | - Ibrahim Karaman
- Department of Epidemiology and Biostatistics, Imperial College London, London W2 1PG, UK.,UK Dementia Research Institute, Imperial College London, London, UK
| | - Gonçalo Graça
- Section of Bioinformatics, Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK
| | - Rui Pinto
- Department of Epidemiology and Biostatistics, Imperial College London, London W2 1PG, UK.,UK Dementia Research Institute, Imperial College London, London, UK
| | - David M Herrington
- Department of Internal Medicine, Wake Forest University, Winston-Salem, NC 27157, USA
| | - Yue Wang
- Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Arlington, VA 22203, USA
| | - Guoqiang Yu
- Bradley Department of Electrical and Computer Engineering, Virginia Polytechnic Institute and State University, Arlington, VA 22203, USA
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Yoo HJ, Hwang SJ, Lee JH, Shim WS, Choi YW, Cho SM, Chung EK, Park JB, Lee KT. Development and Validation of an LC-MS/MS Assay to Quantitate 2',4',6'-Trihydroxyacetophenone in Rat and Dog Plasma and its Application to a Pharmacokinetic Study. Molecules 2020; 25:E4373. [PMID: 32977631 PMCID: PMC7583961 DOI: 10.3390/molecules25194373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/18/2020] [Accepted: 09/21/2020] [Indexed: 11/17/2022] Open
Abstract
In the present study, a simple, rapid, and reliable bioanalytical method was developed using liquid chromatography with tandem-mass spectrometry (LC-MS/MS) to quantify 2',4',6'-trihydroxyacetophenone (THAP) in rat and dog plasma with 2',4',6'-trihydroxybenzaldehyde as an internal standard (IS). The LC-MS/MS instrument was operated in the multiple reaction monitoring (MRM) mode to detect THAP at m/z transition 166.89 > 82.8 and IS at 152.89 > 82.8, respectively. A simple, one-step protein precipitation (PP) method was employed with acetonitrile for sample preparation. Utilizing a Gemini C18 column, THAP and IS were separated with an isocratic mobile phase consisting of 10 mM ammonium acetate and methanol (10:90, v/v) at a flow rate of 0.2 mL/min. Total chromatographic run time was 2.5 min per sample injection. The standard calibration curve for THAP was linear (r2 ≥ 0.9987) over the concentration range of 0.1 to 100 µg/mL with the lower limit of quantitation (LLOQ) of 0.1 µg/mL (S/N ratio > 10). According to the regulatory guidelines from the U.S. Food and Drug Administration (FDA) and the Korea Ministry of Food and Drug Safety (MFDS), our newly developed biomedical analytical method was fully and adequately validated in terms of selectivity, sensitivity, linearity, intra- and inter-day precision and accuracy, recovery, matrix effect, stability, and dilution integrity. Our validated assay was successfully utilized in a nonclinical pharmacokinetic study of THAP in rats and dogs.
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Affiliation(s)
- Hee Jo Yoo
- Department of Pharmaceutical Biochemistry, Kyung Hee University, Seoul 02447, Korea; (H.J.Y.); (J.-H.L.)
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Se-Jung Hwang
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea;
| | - Jeong-Hun Lee
- Department of Pharmaceutical Biochemistry, Kyung Hee University, Seoul 02447, Korea; (H.J.Y.); (J.-H.L.)
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
| | - Wang-Seob Shim
- Kyung Hee Drug Analysis Center, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-Gu, Seoul 02447, Korea;
| | - Yun-Woong Choi
- Korea United Pharmaceutical Company, Seoul 06116, Korea; (Y.-W.C.); (S.M.C.)
| | - Sang Min Cho
- Korea United Pharmaceutical Company, Seoul 06116, Korea; (Y.-W.C.); (S.M.C.)
| | - Eun Kyoung Chung
- Department of Pharmacy, College of Pharmacy, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Korea;
| | - Jun-Bom Park
- College of Pharmacy, Sahmyook University, Seoul 01795, Korea
| | - Kyung-Tae Lee
- Department of Pharmaceutical Biochemistry, Kyung Hee University, Seoul 02447, Korea; (H.J.Y.); (J.-H.L.)
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul 02447, Korea
- Kyung Hee Drug Analysis Center, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-Gu, Seoul 02447, Korea;
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Qin Z, Jia M, Yang J, Xing H, Yin Z, Yao Z, Zhang X, Yao X. Multiple circulating alkaloids and saponins from intravenous Kang-Ai injection inhibit human cytochrome P450 and UDP-glucuronosyltransferase isozymes: potential drug-drug interactions. Chin Med 2020; 15:69. [PMID: 32655683 PMCID: PMC7339578 DOI: 10.1186/s13020-020-00349-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 06/26/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Kang-Ai injection is widely used as an adjuvant therapy drug for many cancers, leukopenia, and chronic hepatitis B. Circulating alkaloids and saponins are believed to be responsible for therapeutic effects. However, their pharmacokinetics (PK) and excretion in vivo and the risk of drug-drug interactions (DDI) through inhibiting human cytochrome P450 (CYP) and UDP-glucuronosyltransferase (UGT) enzymes remain unclear. METHODS PK and excretion of circulating compounds were investigated in rats using a validated ultra-high-performance liquid chromatography tandem mass spectrometry (UHPLC-MS) method. Further, the inhibitory effects of nine major compounds against eleven CYP and UGT isozymes were assayed using well-accepted specific substrate for each enzyme. RESULTS After dosing, 9 alkaloids were found with C max and t 1/2 values of 0.17-422.70 μmol/L and 1.78-4.33 h, respectively. Additionally, 28 saponins exhibited considerable systemic exposure with t 1/2 values of 0.63-7.22 h, whereas other trace saponins could be negligible or undetected. Besides, over 90% of alkaloids were excreted through hepatobiliary and renal excretion. Likewise, astragalosides and protopanaxatriol (PPT) type ginsenosides also involved in hepatobiliary and/or renal excretion. Protopanaxadiol (PPD) type ginsenosides were mainly excreted to urine. Furthermore, PPD-type ginsenosides were extensively bound (f u-plasma approximately 1%), whereas astragalosides and PPT-type ginsenosides displayed f u-plasma values of 12.35% and 60.23-87.36%, respectively. Moreover, matrine, oxymatrine, astragaloside IV, ginsenoside Rg1, ginsenoside Re, ginsenoside Rd, ginsenoside Rc, and ginsenoside Rb1 exhibited no inhibition or weak inhibition against several common CYP and UGT enzymes IC50 values between 8.81 and 92.21 μM. Through kinetic modeling, their inhibition mechanisms towards those CYP and UGT isozymes were explored with obtained Ki values. In vitro-in vivo extrapolation showed the inhibition of systemic clearance for CYP or UGT substrates seemed impossible due to [I]/Ki no more than 0.1. CONCLUSIONS We summarized the PK behaviors, excretion characteristics and protein binding rates of circulating alkaloids, astragalosides and ginsenosides after intravenous Kang-Ai injection. Furthermore, weak inhibition or no inhibition towards these CYP and UGT activities could not trigger harmful DDI when Kang-Ai injection is co-administered with clinical drugs primarily cleared by these CYP or UGT isozymes.
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Affiliation(s)
- Zifei Qin
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052 China
- Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, 450052 China
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632 China
| | - Mengmeng Jia
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052 China
- Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, 450052 China
| | - Jing Yang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052 China
- Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, 450052 China
| | - Han Xing
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052 China
- Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, 450052 China
| | - Zhao Yin
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052 China
- Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, 450052 China
| | - Zhihong Yao
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632 China
- College of Pharmacy, Jinan University, Guangzhou, 510632 China
| | - Xiaojian Zhang
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052 China
- Henan Key Laboratory of Precision Clinical Pharmacy, Zhengzhou University, Zhengzhou, 450052 China
| | - Xinsheng Yao
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, Jinan University, Guangzhou, 510632 China
- College of Pharmacy, Jinan University, Guangzhou, 510632 China
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Compensate for or Minimize Matrix Effects? Strategies for Overcoming Matrix Effects in Liquid Chromatography-Mass Spectrometry Technique: A Tutorial Review. Molecules 2020; 25:molecules25133047. [PMID: 32635301 PMCID: PMC7412464 DOI: 10.3390/molecules25133047] [Citation(s) in RCA: 85] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 06/30/2020] [Accepted: 07/01/2020] [Indexed: 11/16/2022] Open
Abstract
In recent decades, mass spectrometry techniques, particularly when combined with separation methods such as high-performance liquid chromatography, have become increasingly important in pharmaceutical, bio-analytical, environmental, and food science applications because they afford high selectivity and sensitivity. However, mass spectrometry has limitations due to the matrix effects (ME), which can be particularly marked in complex mixes, when the analyte co-elutes together with other molecules, altering analysis results quantitatively. This may be detrimental during method validation, negatively affecting reproducibility, linearity, selectivity, accuracy, and sensitivity. Starting from literature and own experience, this review intends to provide a simple guideline for selecting the best operative conditions to overcome matrix effects in LC-MS techniques, to obtain the best result in the shortest time. The proposed methodology can be of benefit in different sectors, such as pharmaceutical, bio-analytical, environmental, and food sciences. Depending on the required sensitivity, analysts may minimize or compensate for ME. When sensitivity is crucial, analysis must try to minimize ME by adjusting MS parameters, chromatographic conditions, or optimizing clean-up. On the contrary, to compensate for ME analysts should have recourse to calibration approaches depending on the availability of blank matrix. When blank matrices are available, calibration can occur through isotope labeled internal standards and matrix matched calibration standards; conversely, when blank matrices are not available, calibration can be performed through isotope labeled internal standards, background subtraction, or surrogate matrices. In any case, an adjusting of MS parameters, chromatographic conditions, or a clean-up are necessary.
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Gonel A, Kirhan I, Koyuncu I, Bayraktar N, Karadag ME, Karadag M. The Role of Interferences in the Increasing Incidence of Vitamin D Deficiency. Endocr Metab Immune Disord Drug Targets 2020; 20:1303-1308. [PMID: 32496995 DOI: 10.2174/1871530320666200604160208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/08/2019] [Accepted: 04/10/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Lipemia is one of the causes of interference in immunoassay and LC-MS/MS methods. Increased prevalence of vitamin D deficiency in the US, where obesity is gradually increasing, raises the suspicion that high levels of fat diet and blood lipid levels interfere with vitamin D measurement results. The focus of this study was to investigate the effect of blood lipid profiles on vitamin D results and prevent the matrix effect. MATERIAL AND METHODS In this study, 25OH vitamin D3 (25OHD3) levels of 100 samples consecutively accepted to biochemistry laboratory regardless of age and sex were measured by the LC-MS/MS method, and each sample was restudied after 1/10 dilution. After dilution restudy, two groups were obtained-group 1 (results deviating below 20%) and group 2 (results deviating above 20%)-and the difference between the groups was investigated. There were 79 patients in group 1 and 21 patients in group 2. In our study, lipid profiles (triglyceride, total cholesterol, HDL, LDL) from the same samples of consecutive vitamin D patients were studied. RESULTS It was observed that the triglyceride, total cholesterol HDL, LDL, and 25OHD3 measurements of group 1 and group 2 were similar (p > 0.05). While the mean vitamin D value in the second group was 9.94 ± 7.85, the mean vitamin D value after dilution was measured as 39.23 ± 18.13 and was statistically significant. 25OHD3 concentrations of 21 patients out of 100 were found to be falsely low. Measurements were repeated to confirm the results. CONCLUSION The matrix effect caused by exogenous and endogenous interferences in the blood could be a hidden factor increasing the prevalence of vitamin D deficiency by causing falsely low 25OHD3 values. Suspicious results should be remeasured by a dilution study.
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Affiliation(s)
- Ataman Gonel
- Department of Biochemistry, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Idris Kirhan
- Department of Internal Medicine, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Ismail Koyuncu
- Department of Biochemistry, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Nihayet Bayraktar
- Department of Biochemistry, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Mujgan Ercan Karadag
- Department of Biochemistry, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Mehmet Karadag
- Department of Biostatistics and Bioinformatics, Mustafa Kemal University, Faculty of Medicine, Hatay, Turkey
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Akbal L, Hopfgartner G. Hyphenation of packed column supercritical fluid chromatography with mass spectrometry: where are we and what are the remaining challenges? Anal Bioanal Chem 2020; 412:6667-6677. [DOI: 10.1007/s00216-020-02715-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 05/07/2020] [Accepted: 05/14/2020] [Indexed: 12/11/2022]
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Maciążek-Jurczyk M, Bessonneau V, Ings J, Bragg L, McMaster M, Servos MR, Bojko B, Pawliszyn J. Development of a thin-film solid-phase microextraction (TF-SPME) method coupled to liquid chromatography and tandem mass spectrometry for high-throughput determination of steroid hormones in white sucker fish plasma. Anal Bioanal Chem 2020; 412:4183-4194. [PMID: 32361868 DOI: 10.1007/s00216-020-02657-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/28/2020] [Accepted: 04/09/2020] [Indexed: 10/24/2022]
Abstract
Steroid hormones (SH) play a number of important physiological roles in vertebrates including fish. Changes in SH concentration significantly affect reproduction, differentiation, development, or metabolism. The objective of this study was to develop an in vitro high-throughput thin-film solid-phase microextraction (TF-SPME)-liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for targeted analysis of endogenous SH (cortisol, testosterone, progesterone, estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2)) in wild white sucker fish plasma where the concentrations of the analytes are substantially low. A simple TF-SPME method enabled the simultaneous determination of free and total SH concentrations. The use of biocompatible coating allowed direct extraction of these hormones from complex biological samples without prior preparation. The carryover was less than 3%, thereby ensuring reusability of the devices and reproducibility. The results showed that TF-SPME was suitable for the analysis of compounds in the polarity range between 1.28 and 4.31 such as SH at different physicochemical properties. The proposed method was validated according to bioanalytical method validation guidelines. The limit of detection (LOD) and limit of quantification(LOQ) for cortisol, testosterone, progesterone, E1, E2, and EE2 were from 0.006 to 0.150 ng/mL and from 0.020 to 0.500 ng/mL, respectively. The recovery for the method was about 85%, and the accuracy and precision of the method for cortisol, testosterone, and progesterone were ≤ 6.0% and ≤ 11.2%, respectively, whereas those for E1, E2, and EE2 were ≤ 15.0% and ≤ 10.2%, respectively. On the basis of this study, TF-SPME demonstrated several important advantages such as simplicity, sensitivity, and robustness under laboratory conditions. Graphical abstract.
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Affiliation(s)
- Małgorzata Maciążek-Jurczyk
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.,Department of Physical Pharmacy, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, 41-200, Sosnowiec, Poland
| | - Vincent Bessonneau
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada
| | - Jennifer Ings
- Enviroment and Climate Change Canada, Burlington, Ontario, L7S 1A1, Canada
| | - Leslie Bragg
- Department of Biology, University of Waterloo, N2L 3G1, Waterloo, Ontario, Canada
| | - Mark McMaster
- Enviroment and Climate Change Canada, Burlington, Ontario, L7S 1A1, Canada
| | - Mark R Servos
- Department of Biology, University of Waterloo, N2L 3G1, Waterloo, Ontario, Canada
| | - Barbara Bojko
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.,Department of Pharmacodynamics and Molecular Pharmacology, Faculty of Pharmacy, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, 85-089, Bydgoszcz, Poland
| | - Janusz Pawliszyn
- Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada.
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Enhanced specificity due to method specific limits for relative ion intensities in a high-performance liquid chromatography – tandem mass spectrometry method for iohexol in human serum. ACTA ACUST UNITED AC 2020; 58:709-718. [DOI: 10.1515/cclm-2019-1001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/20/2020] [Indexed: 12/26/2022]
Abstract
AbstractBackgroundAccurate assessment of kidney function is needed for a variety of clinical indications and for research. The measurement of the serum clearance of iohexol has emerged as a feasible method to reach this objective. We report the analytical validation and clinical application of a new high-performance liquid chromatography (HPLC) – tandem mass spectrometry (MS/MS) assay to quantify iohexol in human serum. Specificity was enhanced due to the use of method specific acceptance limits for relative ion (RI) intensities.MethodsThe internal standard ioversol was added to 50 μL serum prior to protein precipitation with methanol. Linear gradient elution was performed on a Waters Oasis® HLB column. Three transitions for both iohexol and ioversol were monitored allowing calculation of RIs. Measurements acquired during method validation were used as a training set to establish stricter acceptance criteria for RIs which were then tested retrospectively on clinical routine measurements (86 measurements) and on mathematically simulated interferences.ResultsThe method was linear between 5.0 μg/mL (lower limit of quantification [LLOQ]) and 100.3 μg/mL iohexol. Intraday and interday imprecision were ≤2.6% and ≤3.2%, respectively. Bias was −1.6% to 1.5%. All validation criteria were met, including selectivity, recovery, extraction efficiency and matrix effects. Retrospectively acceptance limits for RIs could be narrowed to ±4 relative standard deviations of the corresponding RIs in the training set. The new limits resulted in an enhanced sensitivity for the simulated interferences.ConclusionsCriteria for validation were met and the assay is now used in our clinical routine diagnostics and in research.
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Koch E, Mainka M, Dalle C, Ostermann AI, Rund KM, Kutzner L, Froehlich LF, Bertrand-Michel J, Gladine C, Schebb NH. Stability of oxylipins during plasma generation and long-term storage. Talanta 2020; 217:121074. [PMID: 32498891 DOI: 10.1016/j.talanta.2020.121074] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 12/17/2022]
Abstract
Oxidized unsaturated fatty acids - i.e. eicosanoids and other oxylipins - are lipid mediators involved in the regulation of numerous physiological functions such as inflammation, blood coagulation, vascular tone and endothelial permeability. They have raised strong interest in clinical lipidomics in order to understand their role in health and diseases and their use as biomarkers. However, before the clinical translation, it is crucial to validate the analytical reliability of oxylipins. This notably requires to assess the putative artificial formation or degradation of oxylipins by (unsuitable) blood handling during plasma generation, storage and sample preparation. Using a liquid chromatography-mass spectrometry method covering 133 oxylipins we comprehensively analyzed the total (free + esterified) oxylipin profile in plasma and investigated the influence of i) addition of additives during sample preparation, ii) different storage times and temperatures during the transitory stage of plasma generation and iii) long-term storage of plasma samples at -80 °C. Addition of radical scavenger butylated hydroxytoluene reduced the apparent concentrations of hydroxy-PUFA and thus should be added to the samples at the beginning of sample preparation. The concentrations of all oxylipin classes remained stable (within analytical variance of 20%) during the transitory stage of plasma generation up to 24 h at 4 °C or 4 h at 20 °C before centrifugation of EDTA-whole blood and up to 5 days at -20 °C after plasma separation. The variations in oxylipin concentrations did not correlate with storage time, storage temperature or stage of plasma generation. A significant increase of potentially lipoxygenase derived hydroxy-PUFA compared to immediate processing was only detected when samples were stored for longer times before centrifugation, plasma separation as well as freezing of plasma revealing residual enzymatic activity. Autoxidative rather than enzymatic processes led to a slightly increased concentration of 9-HETE when plasma samples were stored at -80 °C for 15 months. Overall, we demonstrate that total plasma oxylipins are robust regarding delays during plasma generation and long-term storage at -80 °C supporting the application of oxylipin profiling in clinical research.
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Affiliation(s)
- Elisabeth Koch
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | - Malwina Mainka
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | - Céline Dalle
- Université Clermont Auvergne, INRAe, UNH, Clermont-Ferrand, France
| | - Annika I Ostermann
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | - Katharina M Rund
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | - Laura Kutzner
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | - Laura-Fabienne Froehlich
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany
| | - Justine Bertrand-Michel
- MetaToul-MetaboHUB, Inserm/UPS UMR 1048 - I2MC, Institut des Maladies Métaboliques et Cardiovasculaires, Toulouse, France
| | - Cécile Gladine
- Université Clermont Auvergne, INRAe, UNH, Clermont-Ferrand, France
| | - Nils Helge Schebb
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Wuppertal, Germany.
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Adlnasab L, Shahdousti P, Ahmar H. Layered double hydroxide intercalated with tyrosine for ultrasonic-assisted microextraction of tramadol and methadone from biological samples followed by GC/MS analysis. Mikrochim Acta 2020; 187:265. [DOI: 10.1007/s00604-020-04237-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 03/24/2020] [Indexed: 10/24/2022]
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Strategies for effective development of ultra-sensitive LC–MS/MS assays: application to a novel STING agonist. Bioanalysis 2020; 12:467-484. [DOI: 10.4155/bio-2020-0038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background: The continual need for the development and validation of ultra-sensitive (low pg/ml) LC–MS/MS assays in the pharmaceutical industry is largely driven by the ultra-low analyte exposure or very low sample volume. Methodology: Strategies and systematic approaches for sensitivity enhancement are provided which cover all aspects of a LC–MS/MS bioanalysis. A case study where such strategies were applied for the validation of a 5.0 pg/ml assay for a STING agonist is discussed. Conclusion: Analytical protocols were developed to extract analytes from large volume of plasma samples (600 and 400 μl) with high throughput. The guidance provided in this publication can serve as a resource to influence LC–MS/MS method development activities.
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Zhao Y, Couchman L, Kipper K, Arya R, Patel JP. A UHPLC-MS/MS method to simultaneously quantify apixaban, edoxaban and rivaroxaban in human plasma and breast milk: For emerging lactation studies. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1144:122095. [PMID: 32251991 DOI: 10.1016/j.jchromb.2020.122095] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 03/15/2020] [Accepted: 03/29/2020] [Indexed: 12/11/2022]
Abstract
Clinical studies are needed to clarify the use of direct oral anticoagulants (DOACs) in breastfeeding women. To support emerging clinical studies on investigating DOAC's transfer into breast milk, an ultra-high-performance liquid chromatography/tandem mass spectrometry (UHPLC-MS/MS) method was developed and validated for quantifying three DOACs - apixaban, edoxaban and rivaroxaban in human plasma and breast milk. Protein precipitation with methanol was performed for sample preparation. Chromatographic analysis was performed using a C18 column. The MS detection was performed in MRM mode. The method was validated in accordance with the European Guideline (EMA). The calibration range was 5-500 ng/mL in plasma and 5-250 ng/mL in breast milk. The within-batch and between-batch variability remained <9%. Recoveries ranged from 106.13% to 109.05% in plasma and from 93.40% to 107.91% in breast milk. The lot-to-lot matrix variability was within ±15% among a range of samples originating from many different subjects. All analytes were stable when stored for 24 h at room temperature, 7 days at 2-8 °C, and at least 5 weeks at -20 °C in both plasma and breast milk. The developed method fulfilled the EMA bioanalytical method validation guideline and was shown to be simple, fast, accurate and will now be used in a clinical trial evaluating the transfer of apixaban and rivaroxaban into human breast milk.
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Affiliation(s)
- Yating Zhao
- Institute of Pharmaceutical Science, King's College London, UK; King's Thrombosis Centre, Department of Haematological Medicine, King's College Hospital NHS Foundation Trust, UK; Analytical Services International Ltd, UK.
| | | | - Karin Kipper
- Analytical Services International Ltd, UK; University of Tartu, Institute of Chemistry, Estonia
| | - Roopen Arya
- King's Thrombosis Centre, Department of Haematological Medicine, King's College Hospital NHS Foundation Trust, UK
| | - Jignesh P Patel
- Institute of Pharmaceutical Science, King's College London, UK; King's Thrombosis Centre, Department of Haematological Medicine, King's College Hospital NHS Foundation Trust, UK
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