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Zhang R, Jia W. Supramolecular self-assembly strategies of natural-based β-lactoglobulin modulating bitter perception of goat milk-derived bioactive peptides. J Dairy Sci 2024; 107:4174-4188. [PMID: 38310962 DOI: 10.3168/jds.2023-24386] [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: 11/02/2023] [Accepted: 01/01/2024] [Indexed: 02/06/2024]
Abstract
Complete self-assembly and reassembly behavior of bitter peptide-protein necessitates multilevel theories that encompass phenomena ranging from the self-assembly of recombinant complex to atomic trajectories. An extension to the level of mechanism method was put forth, involves limited enzymatic digestion and bottom-up proteomics to dissect inherent heterogeneity within β-LG and β-LG-PPGLPDKY complex and uncover conformational and dynamic alterations occurring in specific local regions of the model protein. Bitter peptide PPGLPDKY spontaneously bound to IIAEKTK, IDALNENK, and YLLFCMENSAEPEQSLACQCLVR regions of β-LG in a 1:1 stoichiometric ratio to mask bitterness perception. Molecular dynamic simulation and free energy calculation provided time-varying atomic trajectories of the recombinant complex and found that a peptide was stabilized in the upper region of the hydrophobic cavity with the binding free energy of -30.56 kJ mol-1 through 4 hydrogen bonds (Glu74, Glu55, Lys69, and Ser116) and hydrophobic interactions (Asn88, Asn90, and Glu112). Current research aims to provide valuable physical insights into the macroscopic self-assembly behavior between proteins and bitter peptides, and the meticulous design of highly acceptable taste characteristics in goat milk products.
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Affiliation(s)
- Rong Zhang
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
| | - Wei Jia
- School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China; Shaanxi Research Institute of Agricultural Products Processing Technology, Xi'an 710021, China.
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2
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Yu X, Cong Z, Wang C, Wang S, Yan Z, Wang B, Liu X, Li Z, Gao P, Kang H. Comprehensive metabolism study of Tangeretin in rat plasma, urine and faeces using ultra-high performance liquid chromatography-Q Exactive hybrid quadrupole-orbitrap high-resolution accurate mass spectrometry. Curr Drug Metab 2022; 23:CDM-EPUB-127789. [PMID: 36424804 DOI: 10.2174/1389200224666221124103611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 10/05/2022] [Accepted: 10/27/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND Tangeretin, present in citrus fruits, is a polymethoxy flavone with extensive pharmacological effects. It has been widely used in the clinic, but there were no detailed studies on the in vivo metabolism of tangeretin. OBJECTIVE This study aimed to establish a rapid and effective strategy to identify the metabolites of tangeretin and evaluate the biotransformation pathways of tangeretin in rats. METHODS The ultra-high performance liquid chromatography (UHPLC) equipped with a Q-Exactive Orbitrap mass spectrometer was used to identify the metabolites of tangeretin in plasma, urine and faeces of rats after intragastric administration. Based on high-resolution extracted ion chromatograms (HREICs) and parallel reaction monitoring mode (PRM), metabolites of tangeretin were identified by comparing the accurate mass, chromatographic retention times, diagnostic product ions (DPIs) and neutral loss fragments (NLFs) with those of tangeretin reference standard. Isomers were distinguished by ClogP values. RESULTS An efficient and integrated strategy was established for the comprehensive screening and characterizing of tangeretin metabolites through Rapid Profiling. Based on this strategy, a total of 52 metabolites were detected and identified, among which 25 metabolites were found in rat plasma, while 48 and 16 metabolites were characterized from rat urine and faeces, respectively. These metabolites were produced by demethylation, demethoxylation, hydroxylation, methoxylation, glucuronidation, glycosylation, sulfation, and their composite reactions. Interestingly, tangeretin is easy to lose methyl in vivo and becomes an intermediate product, and then other phase I and phase II reactions occur. Moreover, the characteristic fragmentation pathways of tangeretin were summarized for the subsequent metabolite identification. CONCLUSION The analytical method based on UHPLC-Q-Exactive mass spectrometer has the ability to quickly clarify unknown metabolism. And the the comprehensive metabolism study of tangeretin provided an overall metabolic profile, which will be of great scientific basis for further studies on tangeretin in determining its pharmacokinetics, the bioactivity of the metabolites, and clinical applications.
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Affiliation(s)
- Xiaojun Yu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Zhufeng Cong
- Shandong Cancer Hospital & institute, Jinan, Shandong Province, China
| | - Changlin Wang
- College of traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Shengguang Wang
- College of traditional Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Zhi Yan
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Bin Wang
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Xiaonan Liu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Zhen Li
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Peng Gao
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - Huaixing Kang
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
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Shi P, Wang Y, Wu W, Xia B, Zhou Y. A novel functionalized covalent organic framework/carbon nanotube composite as an effective online solid-phase extraction sorbent for simultaneous detection of 33 steroid hormones in pork. Food Chem 2022; 379:132111. [DOI: 10.1016/j.foodchem.2022.132111] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/15/2021] [Accepted: 01/06/2022] [Indexed: 12/24/2022]
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Valko-Rokytovská M, Očenáš P, Salayová A, Kostecká Z. Breast Cancer: Targeting of Steroid Hormones in Cancerogenesis and Diagnostics. Int J Mol Sci 2021; 22:ijms22115878. [PMID: 34070921 PMCID: PMC8199112 DOI: 10.3390/ijms22115878] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/26/2021] [Accepted: 05/27/2021] [Indexed: 12/14/2022] Open
Abstract
Breast cancer is the most common malignancy in women with high mortality. Sensitive and specific methods for the detection, characterization and quantification of endogenous steroids in body fluids or tissues are needed for the diagnosis, treatment and prognosis of breast cancer and many other diseases. At present, non-invasive diagnostic methods are gaining more and more prominence, which enable a relatively fast and painless way of detecting many diseases. Metabolomics is a promising analytical method, the principle of which is the study and analysis of metabolites in biological material. It represents a comprehensive non-invasive diagnosis, which has a high potential for use in the diagnosis and prognosis of cancers, including breast cancer. This short review focuses on the targeted metabolomics of steroid hormones, which play an important role in the development and classification of breast cancer. The most commonly used diagnostic tool is the chromatographic method with mass spectrometry detection, which can simultaneously determine several steroid hormones and metabolites in one sample. This analytical procedure has a high potential in effective diagnosis of steroidogenesis disorders. Due to the association between steroidogenesis and breast cancer progression, steroid profiling is an important tool, as well as in monitoring disease progression, improving prognosis, and minimizing recurrence.
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Qi P, Zhou QQ, Lin ZH, Liu J, Cai WY, Mao XW, Jiang JJ. Qualitative screening and quantitative determination of multiclass water-soluble synthetic dyes in foodstuffs by liquid chromatography coupled to quadrupole Orbitrap mass spectrometry. Food Chem 2021; 360:129948. [PMID: 33975070 DOI: 10.1016/j.foodchem.2021.129948] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 03/31/2021] [Accepted: 04/21/2021] [Indexed: 12/14/2022]
Abstract
A LC-Q-Orbitrap HRMS analytical method for both qualitative screening and quantitative determination of 90 synthetic dyes including ten groups of isomers in foods has been established. An in-house synthetic dyes database and characteristic ions were also developed. Based on Q-Orbitrap HRMS, mass spectrum and fragmentation patterns of synthetic dyes were studied, which indicated that double charged ions were usually the main precursor ions. Matrix effects were successfully eliminated by the C18 d-SPE clean-up coupled with dilute and shoot approach with methanol-water (1:4, v/v) in 100-fold. For most of the compounds, mean recoveries were satisfactory between 70% and 120% with RSD < 20% at three spiked level in the range of 0.025-1.0 mg/kg. The screening detection limits ranged from 0.025 - 1.0 mg/kg. Method validation showed that the established method was efficient, rapid and high-throughput, which has been successfully applied to the monitoring of these water-soluble synthetic dyes in foods.
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Affiliation(s)
- Ping Qi
- Guang Zhou Institute for Food Inspection, Guangzhou 511410, China
| | - Qiong-Qing Zhou
- Guang Zhou Institute for Food Inspection, Guangzhou 511410, China
| | - Zi-Hao Lin
- Guang Zhou Institute for Food Inspection, Guangzhou 511410, China
| | - Jia Liu
- Guang Zhou Institute for Food Inspection, Guangzhou 511410, China
| | - Wei-Yi Cai
- Guang Zhou Institute for Food Inspection, Guangzhou 511410, China
| | - Xin-Wu Mao
- Guang Zhou Institute for Food Inspection, Guangzhou 511410, China.
| | - Ji-Jun Jiang
- Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China.
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Xiang Z, Wang S, Li H, Dong P, Dong F, Li Z, Dai L, Zhang J. Detection and Identification of Catalpol Metabolites in the Rat Plasma, Urine and Faeces Using Ultra-high Performance Liquid Chromatography-Q Exactive Hybrid Quadrupole-orbitrap High-resolution Accurate Mass Spectrometry. Curr Drug Metab 2021; 22:173-184. [PMID: 33243112 DOI: 10.2174/1389200221999201125205515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 07/30/2020] [Accepted: 08/09/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Catalpol, an iridoid glycoside, is one of the richest bioactive components present in Rehmannia glutinosa. More and more metabolites of drugs have exhibited various pharmacological effects, thus providing guidance for clinical application. However, few researches have paid attention to the metabolism of catalpol. OBJECTIVE This study aimed to establish a rapid and effective method to identify catalpol metabolites and evaluate the biotransformation pathways of catalpol in rats. METHODS In this study, catalpol metabolites in rat urine, plasma and faeces were analyzed by UHPLC-Q-Exactive MS for the characterization of the metabolism of catalpol. Based on high-resolution extracted ion chromatograms (HREICs) and parallel reaction monitoring mode (PRM), metabolites of catalpol were identified by comparing the diagnostic product ions (DPIs), chromatographic retention times, neutral loss fragments (NLFs) and accurate mass measurement with those of catalpol reference standard. RESULTS A total of 29 catalpol metabolites were detected and identified in both negative and positive ion modes. Nine metabolic reactions, including deglycosylation, hydroxylation, dihydroxylation, hydrogenation, dehydrogenation, oxidation of methylene to ketone, glucuronidation, glycine conjugation and cysteine conjugation, were proposed. CONCLUSION A rapid and effective method based on UHPLC-Q-Exactive MS was developed to mine the metabolism information of catalpol. Results of metabolites and biotransformation pathways of catalpol suggested that when orally administrated, catalpol was firstly metabolized into catalpol aglycone, after which phase I and phase II reactions occurred. However, hydrophilic chromatography-mass spectrometry is still needed to further find the polar metabolites of catalpol.
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Affiliation(s)
- Zedong Xiang
- College of Pharmaceutical Science, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Shaoping Wang
- School of Pharmacy, Binzhou Medical University, Yantai, China
| | - Haoran Li
- College of Pharmaceutical Science, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Pingping Dong
- College of Pharmaceutical Science, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Fan Dong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Zhen Li
- College of Pharmaceutical Science, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Long Dai
- College of Pharmaceutical Science, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jiayu Zhang
- School of Pharmacy, Binzhou Medical University, Yantai, China
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Gravitte A, Archibald T, Cobble A, Kennard B, Brown S. Liquid chromatography-mass spectrometry applications for quantification of endogenous sex hormones. Biomed Chromatogr 2020; 35:e5036. [PMID: 33226656 DOI: 10.1002/bmc.5036] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/20/2020] [Accepted: 11/20/2020] [Indexed: 01/18/2023]
Abstract
Liquid chromatography, coupled with tandem mass spectrometry, presents a powerful tool for the quantification of the sex steroid hormones 17-β estradiol, progesterone and testosterone from biological matrices. The importance of accurate quantification with these hormones, even at endogenous levels, has evolved with our understanding of the role these regulators play in human development, fertility and disease risk and manifestation. Routine monitoring of these analytes can be accomplished by immunoassay techniques, which face limitations on specificity and sensitivity, or using gas chromatography-mass spectrometry. LC-MS/MS is growing in capability and acceptance for clinically relevant quantification of sex steroid hormones in biological matrices and is able to overcome many of the limitations of immunoassays. Analyte specificity has improved through the use of novel derivatizing agents, and sensitivity has been refined through the use of high-resolution chromatography and mass spectrometric technology. This review highlights these innovations, among others, in LC-MS/MS steroid hormone analysis captured in the literature over the last decade.
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Affiliation(s)
- Amy Gravitte
- James H Quillen College of Medicine, East Tennessee State University, Department of Biomedical Sciences, Johnson City, TN, USA
| | - Timothy Archibald
- Bill Gatton College of Pharmacy, East Tennessee State University, Department of Pharmaceutical Sciences, Johnson City, TN, USA
| | - Allison Cobble
- Bill Gatton College of Pharmacy, East Tennessee State University, Department of Pharmaceutical Sciences, Johnson City, TN, USA
| | - Benjamin Kennard
- Bill Gatton College of Pharmacy, East Tennessee State University, Department of Pharmaceutical Sciences, Johnson City, TN, USA
| | - Stacy Brown
- Bill Gatton College of Pharmacy, East Tennessee State University, Department of Pharmaceutical Sciences, Johnson City, TN, USA
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Liu XM, Xu XL, Nie XM, Feng XS, Zhang F. A holistic strategy for discovering structural analogues of drug residues in meat using characteristic structural fragments filtering by high-resolution Orbitrap mass spectrometry. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2020; 38:81-94. [PMID: 33170098 DOI: 10.1080/19440049.2020.1825828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
A holistic strategy for discovering structural analogs was established using characteristic structural fragments filtering by high-resolution Orbitrap mass spectrometry and successfully employed for discovering potential hazards in meat. The mass spectrometry fragmentation mechanisms of 113 compounds (including sulphonamides, tetracyclines, benzimidazoles, steroid hormones, cephalosporins, β-blockers) were investigated and a new strategy for screening of characteristic fragment ions was proposed. To process the data acquired by two scan modes, firstly an integrated filtering strategy was conducted to facilitate the characterisation of multi-class drugs. The integrated filtering strategy was applied to reduce interference in the raw data, which could help extracting the MS1 characteristics of the homolog-type chemical substances and expand the screening of the compounds as effectively as possible. This strategy was based on a combination of nitrogen rule, neutral loss and multiple characteristic fragment ions filtering. The method was validated by rapid screening and identification of targeted compounds in spiked samples. Particularly, the successful detection of several new compounds indicated that this strategy had significant advantages over individual filtration methods and could be a promising method for screening and identifying newly homolog-type drug residues in complex samples.
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Affiliation(s)
- Xiao-Min Liu
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine , Beijing, China.,School of Pharmacy, China Medical University , Shenyang, China
| | - Xiu-Li Xu
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine , Beijing, China
| | - Xue-Mei Nie
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine , Beijing, China
| | - Xue-Song Feng
- School of Pharmacy, China Medical University , Shenyang, China
| | - Feng Zhang
- Institute of Food Safety, Chinese Academy of Inspection and Quarantine , Beijing, China
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Liu FJ, Jiang Y, Li P, Liu YD, Xin GZ, Yao ZP, Li HJ. Diagnostic fragmentation-assisted mass spectral networking coupled with in silico dereplication for deep annotation of steroidal alkaloids in medicinal Fritillariae Bulbus. JOURNAL OF MASS SPECTROMETRY : JMS 2020; 55:e4528. [PMID: 32559823 DOI: 10.1002/jms.4528] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 04/03/2020] [Accepted: 04/07/2020] [Indexed: 06/11/2023]
Abstract
Fully understanding the chemicals in an herbal medicine remains a challenging task. Molecular networking (MN) allows to organize tandem mass spectrometry (MS/MS) data in complex samples by mass spectral similarity, which yet suffers from low coverage and accuracy of compound annotation due to the size limitation of available databases and differentiation obstacle of similar chemical scaffolds. In this work, an enhanced MN-based strategy named diagnostic fragmentation-assisted molecular networking coupled with in silico dereplication (DFMN-ISD) was introduced to overcome these obstacles: the rule-based fragmentation patterns provide insights into similar chemical scaffolds, the generated in silico candidates based on metabolic reactions expand the available natural product databases, and the in silico annotation method facilitates the further dereplication of candidates by computing their fragmentation trees. As a case, this approach was applied to globally profile the steroidal alkaloids in Fritillariae bulbus, a commonly used antitussive and expectorant herbal medicine. Consequently, a total of 325 steroidal alkaloids were discovered, including 106 cis-D/E-cevanines, 142 trans-D/E-cevanines, 29 jervines, 23 veratramines, and 25 verazines. And 10 of them were confirmed by available reference standards. Approximately 70% of the putative steroidal alkaloids have never been reported in previous publications, demonstrating the benefit of DFMN-ISD approach for the comprehensive characterization of chemicals in a complex plant organism.
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Affiliation(s)
- Feng-Jie Liu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China
| | - Yan Jiang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
| | - Ping Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China
| | - Yang-Dan Liu
- School of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Gui-Zhong Xin
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China
| | - Zhong-Ping Yao
- State Key Laboratory of Chemical Biology and Drug Discovery, Food Safety and Technology Research Centre and Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Kowloon, China
- State Key Laboratory of Chinese Medicine and Molecular Pharmacology (Incubation) and Shenzhen Key Laboratory of Food Biological Safety Control, Shenzhen Research Institute of Hong Kong Polytechnic University, Shenzhen, China
| | - Hui-Jun Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing, 210009, China
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Moolla A, Tomlinson JW. Editorial: can urine-based metabolomics improve diagnosis of advanced fibrosis in NAFLD? Authors' reply. Aliment Pharmacol Ther 2020; 51:1205-1206. [PMID: 32424931 DOI: 10.1111/apt.15756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- Ahmad Moolla
- Oxford Centre for Diabetes Endocrinology & Metabolism (OCDEM), NIHR Oxford Biomedical Research Centre, University of Oxford, Churchill Hospital, Oxford, UK
| | - Jeremy W Tomlinson
- Oxford Centre for Diabetes Endocrinology & Metabolism (OCDEM), NIHR Oxford Biomedical Research Centre, University of Oxford, Churchill Hospital, Oxford, UK
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