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Wang Y, Zhou H, Zhou K, Han Q, Wang Z, Xu B. Study on the roles of microorganisms and endogenous enzymes in the evolution of metabolic characteristics of lean portion during traditional Chinese bacon processing. Food Res Int 2022; 162:112087. [DOI: 10.1016/j.foodres.2022.112087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 09/11/2022] [Accepted: 10/24/2022] [Indexed: 11/25/2022]
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2
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Connolly JRFB, Munoz-Muriedas J, Lapthorn C, Higton D, Vissers JPC, Webb A, Beaumont C, Dear GJ. Investigation into Small Molecule Isomeric Glucuronide Metabolite Differentiation Using In Silico and Experimental Collision Cross-Section Values. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2021; 32:1976-1986. [PMID: 34296869 DOI: 10.1021/jasms.0c00427] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Identifying isomeric metabolites remains a challenging and time-consuming process with both sensitivity and unambiguous structural assignment typically only achieved through the combined use of LC-MS and NMR. Ion mobility mass spectrometry (IMMS) has the potential to produce timely and accurate data using a single technique to identify drug metabolites, including isomers, without the requirement for in-depth interpretation (cf. MS/MS data) using an automated computational pipeline by comparison of experimental collision cross-section (CCS) values with predicted CCS values. An ion mobility enabled Q-Tof mass spectrometer was used to determine the CCS values of 28 (14 isomeric pairs of) small molecule glucuronide metabolites, which were then compared to two different in silico models; a quantum mechanics (QM) and a machine learning (ML) approach to test these approaches. The difference between CCS values within isomer pairs was also assessed to evaluate if the difference was large enough for unambiguous structural identification through in silico prediction. A good correlation was found between both the QM- and ML-based models and experimentally determined CCS values. The predicted CCS values were found to be similar between ML and QM in silico methods, with the QM model more accurately describing the difference in CCS values between isomer pairs. Of the 14 isomeric pairs, only one (naringenin glucuronides) gave a sufficient difference in CCS values for the QM model to distinguish between the isomers with some level of confidence, with the ML model unable to confidently distinguish the studied isomer pairs. An evaluation of analyte structures was also undertaken to explore any trends or anomalies within the data set.
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Affiliation(s)
- John R F B Connolly
- RCSI University of Medicine and Health Sciences, 123 St. Stephen's Green, Dublin D02 YN77, Ireland
| | | | - Cris Lapthorn
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, United Kingdom
| | - David Higton
- Waters Corporation, Stamford Ave, Wilmslow SK9 4AX, United Kingdom
| | | | - Alison Webb
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, United Kingdom
| | - Claire Beaumont
- GlaxoSmithKline, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2NY, United Kingdom
| | - Gordon J Dear
- GlaxoSmithKline, Park Road, Ware, Hertfordshire SG12 0DP, United Kingdom
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3
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Huang F, Karu K, Campos LC. Simultaneous measurement of free and conjugated estrogens in surface water using capillary liquid chromatography tandem mass spectrometry. Analyst 2021; 146:2689-2704. [PMID: 33751008 DOI: 10.1039/d0an02335c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Given detrimental impacts induced by estrogens at trace level, determination of them is significant but challenging due to their low content in environmental samples and inherent weak ionisation. A modified derivatisation-based methodology was applied for the first time to detect estrogen in free and conjugated forms including some isomers simultaneously using liquid chromatography tandem mass spectrometry (LC-MSn). Derivatisation reaction with previously used 1,2-dimethyl-1H-imidazole-5-sulphonyl chloride allowed significant increase of mass spectrometric signal of analytes and also provided distinctive fragmentation for their confirmation even in complicated matrix. Then satisfactory recovery (>75%) for the majority of analytes was achieved following optimisation of solid phase extraction (SPE) factors. The linearity was validated over a wide concentration with the correlation coefficient around 0.995. The repeatability of this methodology was also confirmed via the intra-day and inter-day precision and was less than 11.73%. Validation of method quantification limits (MQLs) for all chosen estrogens was conducted using 1000 mL surface water, ranging from 7.0 to 132.3 pg L-1. The established methodology was applied to profile presence of targeted estrogens in natural surface water samples. Out of the ten compounds of interest, three free estrogens (E1, E2, E3) and two sulphate estrogens (E1-3S and E2-3S) were found over their MQLs, being in the range of 0.05-0.32 ng L-1.
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Affiliation(s)
- Fan Huang
- Department of Civil, Environmental and Geomatic Engineering, University College London, London, WC1E 6BT, UK.
| | - Kersti Karu
- Department of Chemistry, University College London, London, WC1E 6BT, UK
| | - Luiza C Campos
- Department of Civil, Environmental and Geomatic Engineering, University College London, London, WC1E 6BT, UK.
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Niyonsaba E, Easton MW, Feng E, Yu Z, Zhang Z, Sheng H, Kong J, Easterling LF, Milton J, Chobanian HR, Deprez NR, Cancilla MT, Kilaz G, Kenttämaa HI. Differentiation of Deprotonated Acyl-, N-, and O-Glucuronide Drug Metabolites by Using Tandem Mass Spectrometry Based on Gas-Phase Ion-Molecule Reactions Followed by Collision-Activated Dissociation. Anal Chem 2019; 91:11388-11396. [PMID: 31381321 DOI: 10.1021/acs.analchem.9b02717] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Glucuronidation, a common phase II biotransformation reaction, is one of the major in vitro and in vivo metabolism pathways of xenobiotics. In this process, glucuronic acid is conjugated to a drug or a drug metabolite via a carboxylic acid, a hydroxy, or an amino group to form acyl-, O-, and/or N-glucuronide metabolites, respectively. This process is traditionally thought to be a detoxification pathway. However, some acyl-glucuronides react with biomolecules in vivo, which may result in immune-mediated idiosyncratic drug toxicity (IDT). In order to avoid this, one may attempt in early drug discovery to modify the lead compounds in such a manner that they then have a lower probability of forming reactive acyl-glucuronide metabolites. Because most drugs or drug candidates bear multiple functionalities, e.g., hydroxy, amino, and carboxylic acid groups, glucuronidation can occur at any of those. However, differentiation of isomeric acyl-, N-, and O-glucuronide derivatives of drugs is challenging. In this study, gas-phase ion-molecule reactions between deprotonated glucuronide metabolites and BF3 followed by collision-activated dissociation (CAD) in a linear quadrupole ion trap mass spectrometer were demonstrated to enable the differentiation of acyl-, N-, and O-glucuronides. Only deprotonated N-glucuronides and deprotonated, migrated acyl-glucuronides form the two diagnostic product ions: a BF3 adduct that has lost two HF molecules, [M - H + BF3 - 2HF]-, and an adduct formed with two BF3 molecules that has lost three HF molecules, [M - H + 2BF3 - 3HF]-. These product ions were not observed for deprotonated O-glucuronides and unmigrated, deprotonated acyl-glucuronides. Upon CAD of the [M - H + 2BF3 - 3HF]- product ion, a diagnostic fragment ion is formed via the loss of 2-fluoro-1,3,2-dioxaborale (MW of 88 Da) only in the case of deprotonated, migrated acyl-glucuronides. Therefore, this method can be used to unambiguously differentiate acyl-, N-, and O-glucuronides. Further, coupling this methodology with HPLC enables the differentiation of unmigrated 1-β-acyl-glucuronides from the isomeric acyl-glucuronides formed upon acyl migration. Quantum chemical calculations at the M06-2X/6-311++G(d,p) level of theory were employed to probe the mechanisms of the reactions of interest.
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Affiliation(s)
- Edouard Niyonsaba
- Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - McKay W Easton
- Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Erlu Feng
- Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Zaikuan Yu
- Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Zhoupeng Zhang
- Department of Pharmacokinetics, Pharmacodynamics, & Drug Metabolism , Merck & Co., Inc. , West Point , Pennsylvania 19486 , United States
| | - Huaming Sheng
- Analytical Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , United States
| | - John Kong
- Analytical Research & Development , Merck & Co., Inc. , Rahway , New Jersey 07065 , United States
| | - Leah F Easterling
- Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Jacob Milton
- Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Harry R Chobanian
- Department of Pharmacokinetics, Pharmacodynamics, & Drug Metabolism , Merck & Co., Inc. , West Point , Pennsylvania 19486 , United States
| | - Nicholas R Deprez
- Process Chemistry , Merck & Co., Inc. , Rahway , New Jersey 07065 , United States
| | - Mark T Cancilla
- Department of Pharmacokinetics, Pharmacodynamics, & Drug Metabolism , Merck & Co., Inc. , West Point , Pennsylvania 19486 , United States
| | - Gozdem Kilaz
- Purdue University , School of Engineering Technology , West Lafayette , Indiana 47907 , United States
| | - Hilkka I Kenttämaa
- Department of Chemistry , Purdue University , West Lafayette , Indiana 47907 , United States
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Turfus SC, Halket JM, Parkin MC, Cowan DA, Braithwaite RA, Kicman AT. Signal enhancement of glucuronide conjugates in LC-MS/MS by derivatization with the phosphonium propylamine cation tris(trimethoxyphenyl) phosphonium propylamine, for forensic purposes. Drug Test Anal 2014; 6:500-5. [DOI: 10.1002/dta.1661] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Revised: 02/19/2014] [Accepted: 03/25/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Sophie C. Turfus
- Analytical and Environmental Sciences Division; King's College London; London UK
| | - John M. Halket
- Analytical and Environmental Sciences Division; King's College London; London UK
| | - Mark C. Parkin
- Analytical and Environmental Sciences Division; King's College London; London UK
| | - David A. Cowan
- Analytical and Environmental Sciences Division; King's College London; London UK
| | - Robin A. Braithwaite
- Analytical and Environmental Sciences Division; King's College London; London UK
| | - Andrew T. Kicman
- Analytical and Environmental Sciences Division; King's College London; London UK
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Shimizu A, Chiba M. Ion Mobility Spectrometry–Mass Spectrometry Analysis for the Site of Aromatic Hydroxylation. Drug Metab Dispos 2013; 41:1295-9. [DOI: 10.1124/dmd.113.051953] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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Stachulski AV, Meng X. Glucuronides from metabolites to medicines: a survey of the in vivo generation, chemical synthesis and properties of glucuronides. Nat Prod Rep 2013; 30:806-48. [DOI: 10.1039/c3np70003h] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Kuehnbaum NL, Britz-McKibbin P. Comprehensive Profiling of Free and Conjugated Estrogens by Capillary Electrophoresis–Time of Flight/Mass Spectrometry. Anal Chem 2011; 83:8063-8. [DOI: 10.1021/ac201980w] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Naomi L. Kuehnbaum
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4MI, Canada
| | - Philip Britz-McKibbin
- Department of Chemistry and Chemical Biology, McMaster University, Hamilton, Ontario L8S 4MI, Canada
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Lampinen Salomonsson M, Bondesson U, Hedeland M. In vitro formation of phase I and II metabolites of propranolol and determination of their structures using chemical derivatization and liquid chromatography-tandem mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2009; 44:742-754. [PMID: 19170146 DOI: 10.1002/jms.1551] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Derivatization with 1,2-dimethylimidazole-4-sulfonyl chloride (DMISC) has been successfully used as a tool to differentiate between aromatic and aliphatic O-glucuronides of hydroxypropranolol. The analyses were performed with liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS/MS) with both a triple quadrupole and an ion trap instrument. Hydroxylated forms of propranolol can be glucuronidated in aliphatic as well as aromatic positions. These isoforms are not distinguishable by tandem MS alone, as they both initially lose 176 Da, i.e. monodehydrated glucuronic acid, giving back the aglycone. Two in vitro systems were set up for the production of propranolol metabolites. The obtained isomers of 4'-hydroxypropranolol glucuronide were determined to correspond to one aliphatic and one aromatic form, using chemical derivatization with DMISC and LC-MS(n). DMISC was shown to react with the secondary amine in the case where the naphtol was occupied by the glucuronyl moiety, resulting in a different fragmentation pattern compared with that of the aliphatic glucuronide, where the naphtol group was accessible to derivatization.
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Affiliation(s)
- Matilda Lampinen Salomonsson
- Division of Analytical Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre, SE-751 23 Uppsala, Sweden.
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Salomonsson ML, Bondesson U, Hedeland M. Structural evaluation of the glucuronides of morphine and formoterol using chemical derivatization with 1,2-dimethylimidazole-4-sulfonyl chloride and liquid chromatography/ion trap mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2008; 22:2685-2697. [PMID: 18677706 DOI: 10.1002/rcm.3667] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
For the first time chemical derivatization of isomeric drug glucuronides with 1,2-dimethylimidazole-4-sulfonyl chloride (DMISC) has been successfully applied as a tool for determining the site of conjugation. This provides a way to differentiate between glucuronide isomers containing aliphatic and phenolic hydroxyl groups. The analyses were performed with liquid chromatography/electrospray ion trap mass spectrometry (LC/ESI-MSn). DMISC has previously been shown to react selectively with phenols in estrogens, thus improving sensitivity in ESI-MS. The model compounds selected for this study were commercially available standards of formoterol, morphine, morphine-3-glucuronide (M3G), and morphine-6-glucuronide (M6G). Formoterol glucuronides were produced with an enzymatic method in house. Both formoterol and morphine possess one phenolic and one aliphatic hydroxyl group where glucuronidation could take place. The product ion mass spectra of the native morphine glucuronides were indistinguishable due to the initial neutral loss of monodehydrated glucuronic acid (176 u). However, a significant difference between the isomers was observed with DMISC derivatization, as only the form with a free phenol, M6G, gave a detectable reaction product. Formoterol formed two detectable glucuronide isomers in the enzymatic reaction. Their respective sites of conjugation could not be directly determined from the product ion spectra. Reaction with DMISC, however, gave a detectable product with only one of the isomers. Based on previous experience of the preferred DMISC reactions with phenols, and interpretation of the fragmentation pattern of the derivative, it was concluded that the reactive isomer had a free phenol, and was thus conjugated on the aliphatic chain.
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Affiliation(s)
- Matilda Lampinen Salomonsson
- Division of Analytical Pharmaceutical Chemistry, Department of Medicinal Chemistry, Uppsala University, Biomedical Centre, P.O. Box 574, SE-751 23 Uppsala, Sweden
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Holcapek M, Kolárová L, Nobilis M. High-performance liquid chromatography-tandem mass spectrometry in the identification and determination of phase I and phase II drug metabolites. Anal Bioanal Chem 2008; 391:59-78. [PMID: 18345532 PMCID: PMC2359828 DOI: 10.1007/s00216-008-1962-7] [Citation(s) in RCA: 171] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2007] [Revised: 02/05/2008] [Accepted: 02/08/2008] [Indexed: 11/27/2022]
Abstract
Applications of tandem mass spectrometry (MS/MS) techniques coupled with high-performance liquid chromatography (HPLC) in the identification and determination of phase I and phase II drug metabolites are reviewed with an emphasis on recent papers published predominantly within the last 6 years (2002–2007) reporting the employment of atmospheric pressure ionization techniques as the most promising approach for a sensitive detection, positive identification and quantitation of metabolites in complex biological matrices. This review is devoted to in vitro and in vivo drug biotransformation in humans and animals. The first step preceding an HPLC-MS bioanalysis consists in the choice of suitable sample preparation procedures (biomatrix sampling, homogenization, internal standard addition, deproteination, centrifugation, extraction). The subsequent step is the right optimization of chromatographic conditions providing the required separation selectivity, analysis time and also good compatibility with the MS detection. This is usually not accessible without the employment of the parent drug and synthesized or isolated chemical standards of expected phase I and sometimes also phase II metabolites. The incorporation of additional detectors (photodiode-array UV, fluorescence, polarimetric and others) between the HPLC and MS instruments can result in valuable analytical information supplementing MS results. The relation among the structural changes caused by metabolic reactions and corresponding shifts in the retention behavior in reversed-phase systems is discussed as supporting information for identification of the metabolite. The first and basic step in the interpretation of mass spectra is always the molecular weight (MW) determination based on the presence of protonated molecules [M+H]+ and sometimes adducts with ammonium or alkali-metal ions, observed in the positive-ion full-scan mass spectra. The MW determination can be confirmed by the [M-H]- ion for metabolites providing a signal in negative-ion mass spectra. MS/MS is a worthy tool for further structural characterization because of the occurrence of characteristic fragment ions, either MSn analysis for studying the fragmentation patterns using trap-based analyzers or high mass accuracy measurements for elemental composition determination using time of flight based or Fourier transform mass analyzers. The correlation between typical functional groups found in phase I and phase II drug metabolites and corresponding neutral losses is generalized and illustrated for selected examples. The choice of a suitable ionization technique and polarity mode in relation to the metabolite structure is discussed as well.
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Affiliation(s)
- M Holcapek
- Department of Analytical Chemistry, Faculty of Chemical Technology, University of Pardubice, Nám. Cs. Legií 565, 53210, Pardubice, Czech Republic.
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Affiliation(s)
- R K Gilpin
- Brehm Research Laboratory, University Park, Wright State University, Fairborn, Ohio 45324-2031, USA
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Current literature in mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2006; 41:1654-1665. [PMID: 17136768 DOI: 10.1002/jms.959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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