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Peña J, González-Mariño I, Pérez Pavón JL. In-situ acetylation followed by liquid-liquid extraction and gas chromatography - mass spectrometry for the determination of bromophenols in urine. Talanta 2024; 275:126146. [PMID: 38678925 DOI: 10.1016/j.talanta.2024.126146] [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: 02/13/2024] [Revised: 04/19/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
A novel and simple method combining in-situ acetylation, liquid-liquid extraction and gas chromatography-mass spectrometry (GC-MS) has been developed for the quantification of 10 bromophenols in urine, used as biomarkers of exposure to polybrominated diphenyl ethers. The analytical process involves an enzymatic hydrolysis of the bromophenol glucuronide fraction followed by an aqueous derivatization of the phenol group with acetic anhydride. A subsequent liquid-liquid extraction of the sample with hexane allows the injection of the organic layer, using a programmed temperature vaporizer, into a gas chromatograph coupled to a single quadrupole mass spectrometer. Quantification is performed by the standard addition method. Limits of detection are in the pg mL-1 range. Trueness, assessed in terms of percentages of recovery, varies between 100 % and 118 % in synthetic urine and between 79 % and 117 % in human urine. Precision, assessed at two different levels, 0.25 ng mL-1 and 2.5 ng mL-1, shows values of relative standard deviation below 14 % both in intra- and inter-day studies for both matrices. The method has been applied to the analysis of seven urine samples, measuring concentrations higher than the LOQ in three of them. These levels are in agreement with others found in literature, but they have been obtained by applying a much simpler and faster protocol. In addition, the replacement of silylating reagents by acetic anhydride, to derivatize the phenol moiety, provides a greener alternative to other GC-MS procedures published up to date.
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Affiliation(s)
- Javier Peña
- Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemical Sciences, 37008, Salamanca, Spain
| | - Iria González-Mariño
- Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemical Sciences, 37008, Salamanca, Spain.
| | - José Luis Pérez Pavón
- Department of Analytical Chemistry, Nutrition and Bromatology, Faculty of Chemical Sciences, 37008, Salamanca, Spain
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2
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Cools T, Wilson KS, Li D, Vancsok C, Mulot B, Leclerc A, Kok J, Haapakoski M, Bertelsen MF, Ochs A, Girling SJ, Zhou Y, Li R, Vanhaecke L, Wauters J. Development and validation of a versatile non-invasive urinary steroidomics method for wildlife biomonitoring. Talanta 2024; 273:125924. [PMID: 38518717 DOI: 10.1016/j.talanta.2024.125924] [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: 01/23/2024] [Revised: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 03/24/2024]
Abstract
Wildlife conservation is often challenged by a lack of knowledge about the reproduction biology and adaptability of endangered species. Although monitoring steroids and related molecules can increase this knowledge, the applicability of current techniques (e.g. immunoassays) is hampered by species-specific steroid metabolism and the requisite to avoid invasive sampling. This study presents a validated steroidomics method for the (un)targeted screening of a wide range of sex and stress steroids and related molecules in urine using ultra-high performance liquid chromatography coupled to high-resolution mass spectrometry (UHPLC-HRMS). In total, 50 steroids (conjugated and non-conjugated androgens, estrogens, progestogens and glucocorticoids) and 6 prostaglandins could be uniquely detected. A total of 45 out of 56 compounds demonstrated a detection limit below 0.01 ng μL-1. Excellent linearity (R2 > 0.99), precision (CV < 20 %), and recovery (80-120 %) were observed for 46, 41, and 39 compounds, respectively. Untargeted screening of pooled giant panda and human samples yielded 9691 and 8366 features with CV < 30 %, from which 84.1 % and 83.0 %, respectively, also demonstrated excellent linearity (R2 > 0.90). The biological validity of the method was investigated on male and female giant panda urine (n = 20), as well as pooled human samples (n = 10). A total of 24 different steroids were detected with clear qualitative and quantitative differences between human and giant panda samples. Furthermore, expected differences were revealed between female giant panda samples from different reproductive phases. In contrast to traditional biomonitoring techniques, the developed steroidomics method was able to screen a wide range of compounds and provide information on the putative identities of metabolites potentially important for reproductive monitoring in giant pandas. These results illustrate the advancements steroidomics brings to the field of wildlife biomonitoring in the pursuit to better understand the biology of endangered species.
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Affiliation(s)
- Tom Cools
- Laboratory of Integrative Metabolomics, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium; Department of Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
| | - Kirsten S Wilson
- MRC Centre for Reproductive Health, University of Edinburgh, 4-5 Little France Drive, Edinburgh, Scotland, United Kingdom
| | - Desheng Li
- Key Laboratory of SFGA on Conservation Biology of Rare Animals in The Giant Panda National Park, China Conservation and Research Centre for Giant Panda (CCRCGP), People's Republic of China
| | - Catherine Vancsok
- Pairi Daiza Foundation - Pairi Daiza, Domaine de Cambron, 7940, Brugelette, Belgium
| | - Baptiste Mulot
- ZooParc de Beauval and Beauval Nature, Avenue du Blanc, 41110, Saint-Aignan, France
| | - Antoine Leclerc
- ZooParc de Beauval and Beauval Nature, Avenue du Blanc, 41110, Saint-Aignan, France
| | - José Kok
- Ouwehands Dierenpark Rhenen, Grebbeweg 111, 3911, AV Rhenen, the Netherlands
| | - Marko Haapakoski
- Ähtärin Eläinpuisto OY, Karhunkierros 150, FI-63700, Ähtäri, Finland; Department of Biological and Environmental Science, Konnevesi Research Station, University of Jyväskylä, Sirkkamäentie 220, FI-44300, Konnevesi, Finland
| | | | - Andreas Ochs
- Berlin Zoo, Hardenbergplatz 8, 10787, Berlin, Germany
| | - Simon J Girling
- Royal Zoological Society of Scotland, 134 Corstorphine Road, Edinburgh, Scotland, United Kingdom
| | - Yingmin Zhou
- Key Laboratory of SFGA on Conservation Biology of Rare Animals in The Giant Panda National Park, China Conservation and Research Centre for Giant Panda (CCRCGP), People's Republic of China
| | - Rengui Li
- Key Laboratory of SFGA on Conservation Biology of Rare Animals in The Giant Panda National Park, China Conservation and Research Centre for Giant Panda (CCRCGP), People's Republic of China
| | - Lynn Vanhaecke
- Laboratory of Integrative Metabolomics, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium; Institute for Global Food Security, School of Biological Sciences, Queen's University, 19 Chlorine Gardens, Belfast, BT9 5DL, Northern Ireland, United Kingdom.
| | - Jella Wauters
- Laboratory of Integrative Metabolomics, Department of Translational Physiology, Infectiology and Public Health, Faculty of Veterinary Medicine, Ghent University, Salisburylaan 133, 9820, Merelbeke, Belgium; Department of Reproduction Biology, Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Straße 17, 10315, Berlin, Germany
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3
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Ottria R, Porta MD, Xynomilakis O, Casati S, Cazzola R, Ciuffreda P. Lipids and lipid signaling molecules in human milk and infant formula, a chemical characterization of relevant biochemical components. J Nutr Biochem 2024; 126:109580. [PMID: 38272323 DOI: 10.1016/j.jnutbio.2024.109580] [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: 11/07/2023] [Revised: 01/08/2024] [Accepted: 01/08/2024] [Indexed: 01/27/2024]
Abstract
Breastfeeding is the gold standard in infant nutrition and continuous researches aim to optimize infant formula composition as the best alternative available. Human milk lipid content provides more than 50% of energy requirements for infants together with essential vitamins, polyunsaturated fatty acids, and other bioactive components. While fatty acids and vitamins human milk content has been extensively studied and, when needed those have been added to infant formulas, less is known about polyunsaturated fatty acids functional derivatives and other bioactive components. Here we describe the comparison of lipid compositions in breast milk from 22 healthy volunteers breastfeeding mothers and the six most common infant formula devoting particular attention to two families of signaling lipids, endocannabinoids, and eicosanoids. The main differences between breast milk and formulas lie in a variety of saturated fatty and unsaturated fatty acids, in the total amount (45-95% less in infant formula) and a variety of endocannabinoids and eicosanoids (2-AG, 5(s)HETE, 15(S)-HETE and 14,15-EET).
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Affiliation(s)
- Roberta Ottria
- Dipartimento di Scienze Biomediche e Cliniche, Università degli Studi di Milano, Milano 20157, Italy.
| | - Matteo Della Porta
- Dipartimento di Scienze Biomediche e Cliniche, Università degli Studi di Milano, Milano 20157, Italy
| | - Ornella Xynomilakis
- Dipartimento di Scienze Biomediche e Cliniche, Università degli Studi di Milano, Milano 20157, Italy
| | - Sara Casati
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Università degli Studi di Milano, Milan, Italy
| | - Roberta Cazzola
- Dipartimento di Scienze Biomediche e Cliniche, Università degli Studi di Milano, Milano 20157, Italy
| | - Pierangela Ciuffreda
- Dipartimento di Scienze Biomediche e Cliniche, Università degli Studi di Milano, Milano 20157, Italy
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4
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Ishima T, Kimura N, Kobayashi M, Nagai R, Osaka H, Aizawa K. A Simple, Fast, Sensitive LC-MS/MS Method to Quantify NAD(H) in Biological Samples: Plasma NAD(H) Measurement to Monitor Brain Pathophysiology. Int J Mol Sci 2024; 25:2325. [PMID: 38397001 PMCID: PMC10888655 DOI: 10.3390/ijms25042325] [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: 01/19/2024] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 02/25/2024] Open
Abstract
Nicotinamide adenine dinucleotide (NAD) is a cofactor in redox reactions and an essential mediator of energy metabolism. The redox balance between NAD+ and NADH affects various diseases, cell differentiation, and aging, and in recent years there has been a growing need for measurement techniques with improved accuracy. However, NAD(H) measurements, representing both NAD+ and NADH, have been limited by the compound's properties. We achieved highly sensitive simultaneous measurement of NAD+ and NADH under non-ion pairing, mobile phase conditions of water, or methanol containing 5 mM ammonium acetate. These were achieved using a simple pre-treatment and 7-min analysis time. Use of the stable isotope 13C5-NAD+ as an internal standard enabled validation close to BMV criteria and demonstrated the robustness of NAD(H) determination. Measurements using this method showed that brain NAD(H) levels correlate strongly with plasma NAD(H) levels in the same mouse, indicating that NAD(H) concentrations in brain tissue are reflected in plasma. As NAD(H) is involved in various neurodegenerative diseases and cerebral ischemia, as well as brain diseases such as mitochondrial myopathies, monitoring changes in NADH levels in plasma after drug administration will be useful for development of future diagnostics and therapeutics.
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Affiliation(s)
- Tamaki Ishima
- Division of Clinical Pharmacology, Department of Pharmacology, Jichi Medical University, Shimotsuke 329-0498, Japan; (T.I.); (N.K.)
| | - Natsuka Kimura
- Division of Clinical Pharmacology, Department of Pharmacology, Jichi Medical University, Shimotsuke 329-0498, Japan; (T.I.); (N.K.)
| | - Mizuki Kobayashi
- Department of Pediatrics, Jichi Medical University, Shimotsuke 329-0498, Japan; (M.K.); (H.O.)
| | - Ryozo Nagai
- Jichi Medical University, Shimotsuke 329-0498, Japan;
| | - Hitoshi Osaka
- Department of Pediatrics, Jichi Medical University, Shimotsuke 329-0498, Japan; (M.K.); (H.O.)
| | - Kenichi Aizawa
- Division of Clinical Pharmacology, Department of Pharmacology, Jichi Medical University, Shimotsuke 329-0498, Japan; (T.I.); (N.K.)
- Clinical Pharmacology Center, Jichi Medical University Hospital, Shimotsuke 329-0498, Japan
- Division of Translational Research, Clinical Research Center, Jichi Medical University Hospital, Shimotsuke 329-0498, Japan
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5
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González-Domínguez Á, Estanyol-Torres N, Brunius C, Landberg R, González-Domínguez R. QC omics: Recommendations and Guidelines for Robust, Easily Implementable and Reportable Quality Control of Metabolomics Data. Anal Chem 2024; 96:1064-1072. [PMID: 38179935 PMCID: PMC10809278 DOI: 10.1021/acs.analchem.3c03660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/03/2023] [Accepted: 12/21/2023] [Indexed: 01/06/2024]
Abstract
The implementation of quality control strategies is crucial to ensure the reproducibility, accuracy, and meaningfulness of metabolomics data. However, this pivotal step is often overlooked within the metabolomics workflow and frequently relies on the use of nonstandardized and poorly reported protocols. To address current limitations in this respect, we have developed QComics, a robust, easily implementable and reportable method for monitoring and controlling data quality. The protocol operates in various sequential steps aimed to (i) correct for background noise and carryover, (ii) detect signal drifts and "out-of-control" observations, (iii) deal with missing data, (iv) remove outliers, (v) monitor quality markers to identify samples affected by improper collection, preprocessing, or storage, and (vi) assess overall data quality in terms of precision and accuracy. Notably, this tool considers important issues often neglected along quality control, such as the need of separately handling missing values and truly absent data to avoid losing relevant biological information, as well as the large impact that preanalytical factors may elicit on metabolomics results. Altogether, the guidelines compiled in QComics might contribute to establishing gold standard recommendations and best practices for quality control within the metabolomics community.
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Affiliation(s)
- Álvaro González-Domínguez
- Instituto
de Investigación e Innovación Biomédica de Cádiz
(INiBICA), Hospital Universitario Puerta del Mar, Universidad de Cádiz, Cádiz 11009, Spain
| | - Núria Estanyol-Torres
- Division
of Food and Nutrition Science, Department of Life Sciences, Chalmers University of Technology,SE-412 96Gothenburg ,Sweden
| | - Carl Brunius
- Division
of Food and Nutrition Science, Department of Life Sciences, Chalmers University of Technology,SE-412 96Gothenburg ,Sweden
| | - Rikard Landberg
- Division
of Food and Nutrition Science, Department of Life Sciences, Chalmers University of Technology,SE-412 96Gothenburg ,Sweden
| | - Raúl González-Domínguez
- Instituto
de Investigación e Innovación Biomédica de Cádiz
(INiBICA), Hospital Universitario Puerta del Mar, Universidad de Cádiz, Cádiz 11009, Spain
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6
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Yang J, Lin J, Wang A, Yang X, Wang Y, Zhang Y, Dong H, Tian Y, Zhang Z, Wang M, Song R. Study on the effect of calibration standards prepared with different matrix on the accuracy of bile acid quantification using LC-MS/MS. J Pharm Biomed Anal 2024; 237:115785. [PMID: 37837894 DOI: 10.1016/j.jpba.2023.115785] [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: 08/10/2023] [Revised: 10/03/2023] [Accepted: 10/09/2023] [Indexed: 10/16/2023]
Abstract
The transition from relative to absolute quantification of metabolites is the future development trend of mass spectrometry-based metabolomics research, which could fundamentally solve the problem of comparability of data between different laboratories. However, absolute quantification of endogenous molecules is largely hampered by the lack of analyte-free matrix, leading to uncertainty and inconsistency in the preparation of calibration standards. Bile acids (BAs) are an important class of biomarkers that play a key role in disease progression. In this paper, the quantitative accuracy of calibration curves prepared in neat solvent (NSCCs), charcoal stripped matrix (SMCCs) and authentic matrix (AMCCs) were validated using quality control samples (QCs) prepared in authentic matrix. Results suggested that AMCCs could largely minimize the confidence interval (C.I.) and the deviation in accuracy compared with NSCCs and SMCCs when measured concentration is higher than 20% of the background level. In addition, experimental data demonstrated that two-step calibration strategy proposed here is a promising and reliable alternative strategy to quantify endogenous BAs in biological sample.
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Affiliation(s)
- Jinni Yang
- China Pharmaceutical University Nanjing Drum Tower Hospital, Nanjing 210009, China; Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, Nanjing 210009, China
| | - Jiachun Lin
- China Pharmaceutical University Nanjing Drum Tower Hospital, Nanjing 210009, China; Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, Nanjing 210009, China
| | - Anhui Wang
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, Nanjing 210009, China
| | - Xue Yang
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, Nanjing 210009, China
| | - Yali Wang
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, Nanjing 210009, China
| | - Yuting Zhang
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, Nanjing 210009, China
| | - Haijuan Dong
- The Public Laboratory Platform of China Pharmaceutical University, Nanjing 210009, China
| | - Yuan Tian
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, Nanjing 210009, China
| | - Zunjian Zhang
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, Nanjing 210009, China.
| | - Min Wang
- China Pharmaceutical University Nanjing Drum Tower Hospital, Nanjing 210009, China.
| | - Rui Song
- Key Laboratory of Drug Quality Control & Pharmacovigilance (China Pharmaceutical University), Ministry of Educational, Nanjing 210009, China.
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7
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Mladenovic Stokanic M, Simovic A, Jovanovic V, Radomirovic M, Udovicki B, Krstic Ristivojevic M, Djukic T, Vasovic T, Acimovic J, Sabljic L, Lukic I, Kovacevic A, Cujic D, Gnjatovic M, Smiljanic K, Stojadinovic M, Radosavljevic J, Stanic-Vucinic D, Stojanovic M, Rajkovic A, Cirkovic Velickovic T. Sandwich ELISA for the Quantification of Nucleocapsid Protein of SARS-CoV-2 Based on Polyclonal Antibodies from Two Different Species. Int J Mol Sci 2023; 25:333. [PMID: 38203504 PMCID: PMC10778659 DOI: 10.3390/ijms25010333] [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: 11/20/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
In this study, a cost-effective sandwich ELISA test, based on polyclonal antibodies, for routine quantification SARS-CoV-2 nucleocapsid (N) protein was developed. The recombinant N protein was produced and used for the production of mice and rabbit antisera. Polyclonal N protein-specific antibodies served as capture and detection antibodies. The prototype ELISA has LOD 0.93 ng/mL and LOQ 5.3 ng/mL, with a linear range of 1.52-48.83 ng/mL. N protein heat pretreatment (56 °C, 1 h) decreased, while pretreatment with 1% Triton X-100 increased analytical ELISA sensitivity. The diagnostic specificity of ELISA was 100% (95% CI, 91.19-100.00%) and sensitivity was 52.94% (95% CI, 35.13-70.22%) compared to rtRT-PCR (Ct < 40). Profoundly higher sensitivity was obtained using patient samples mostly containing Wuhan-similar variants (Wuhan, alpha, and delta), 62.50% (95% CI, 40.59 to 81.20%), in comparison to samples mostly containing Wuhan-distant variants (Omicron) 30.00% (6.67-65.25%). The developed product has relatively high diagnostic sensitivity in relation to its analytical sensitivity due to the usage of polyclonal antibodies from two species, providing a wide repertoire of antibodies against multiple N protein epitopes. Moreover, the fast, simple, and inexpensive production of polyclonal antibodies, as the most expensive assay components, would result in affordable antigen tests.
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Affiliation(s)
- Maja Mladenovic Stokanic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Ana Simovic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Vesna Jovanovic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Mirjana Radomirovic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Bozidar Udovicki
- Department of Food Safety and Quality Management, Faculty of Agriculture, University of Belgrade, Nemanjina 6, Zemun, 11080 Belgrade, Serbia
| | - Maja Krstic Ristivojevic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Teodora Djukic
- Institute of Medical Chemistry, Faculty of Medicine, University of Belgrade, Višegradska 26, 11000 Belgrade, Serbia
| | - Tamara Vasovic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Jelena Acimovic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Ljiljana Sabljic
- Institute for the Application of Nuclear Energy—INEP, University of Belgrade, Banatska 31b, Zemun, 11080 Belgrade, Serbia
| | - Ivana Lukic
- Institute of Virology, Vaccines, and Sera–TORLAK, Vojvode Stepe 458, 11152 Belgrade, Serbia
| | - Ana Kovacevic
- Institute of Virology, Vaccines, and Sera–TORLAK, Vojvode Stepe 458, 11152 Belgrade, Serbia
| | - Danica Cujic
- Institute for the Application of Nuclear Energy—INEP, University of Belgrade, Banatska 31b, Zemun, 11080 Belgrade, Serbia
| | - Marija Gnjatovic
- Institute for the Application of Nuclear Energy—INEP, University of Belgrade, Banatska 31b, Zemun, 11080 Belgrade, Serbia
| | - Katarina Smiljanic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Marija Stojadinovic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Jelena Radosavljevic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Dragana Stanic-Vucinic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
| | - Marijana Stojanovic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, University of Belgrade, 142 Despot Stefan Blvd., 11000 Belgrade, Serbia
| | - Andreja Rajkovic
- Department of Food Safety and Quality Management, Faculty of Agriculture, University of Belgrade, Nemanjina 6, Zemun, 11080 Belgrade, Serbia
- Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, geb. A, B-9000 Ghent, Belgium
| | - Tanja Cirkovic Velickovic
- Centre of Excellence for Molecular Food Sciences, Department of Biochemistry, Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, 11000 Belgrade, Serbia
- Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, geb. A, B-9000 Ghent, Belgium
- Serbian Academy of Sciences and Arts, Kneza Mihaila 35, 11000 Belgrade, Serbia
- Global Campus, Ghent University, 119-5 Songdomunwha-ro, Yeonsu-gu, Incheon 21985, Republic of Korea
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8
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Chung SH, Yoo D, Ahn TB, Lee W, Hong J. Profiling Analysis of Tryptophan Metabolites in the Urine of Patients with Parkinson's Disease Using LC-MS/MS. Pharmaceuticals (Basel) 2023; 16:1495. [PMID: 37895965 PMCID: PMC10610059 DOI: 10.3390/ph16101495] [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: 09/21/2023] [Revised: 10/05/2023] [Accepted: 10/09/2023] [Indexed: 10/29/2023] Open
Abstract
Although Parkinson's disease (PD) is a representative neurodegenerative disorder and shows characteristic motor impediments, the pathophysiological mechanisms and treatment targets for PD have not yet been clearly identified. Since several tryptophan metabolites produced by gut microbiota could pass the blood-brain barrier and, furthermore, might influence the central nervous system, tryptophan metabolites within the indole, kynurenine, and serotonin metabolic pathways might be the most potent targets for PD development. Furthermore, most metabolites are circulated via the blood, play roles in and/or are metabolized via the host organs, and finally are excreted into the urine. Therefore, profiling the overall tryptophan metabolic pathways in urine samples of patients with PD is important to understanding the pathological mechanisms, finding biomarkers, and discovering therapeutic targets for PD. However, the development of profiling analysis based on tryptophan metabolism pathways in human urine samples is still challenging due to the wide physiological ranges, the varied signal response, and the structural diversity of tryptophan metabolites in complicated urine matrices. In this study, an LC-MS/MS method was developed to profile 21 tryptophan metabolites within the indole, kynurenine, and serotonin metabolic pathways in human urine samples using ion-pairing chromatography and multiple reaction monitoring determination. The developed method was successfully applied to urine samples of PD patients (n = 41) and controls (n = 20). Further, we investigated aberrant metabolites to find biomarkers for PD development and therapeutic targets based on the quantitative results. Unfortunately, most tryptophan metabolites in the urine samples did not present significant differences between control and PD patients, except for indole-3-acetic acid. Nonetheless, indole-3-acetic acid was reported for the first time for its aberrant urinary levels in PD patients and tentatively selected as a potential biomarker for PD. This study provides accurate quantitative results for 21 tryptophan metabolites in biological samples and will be helpful in revealing the pathological mechanisms of PD development, discovering biomarkers for PD, and further providing therapeutic targets for various PD symptoms. In the near future, to further investigate the relationship between gut microbial metabolites and PD, we will employ studies on microbial metabolites using plasma and stool samples from control and PD patients.
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Affiliation(s)
- So Hyeon Chung
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea;
| | - Dallah Yoo
- Department of Neurology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (D.Y.); (T.-B.A.)
| | - Tae-Beom Ahn
- Department of Neurology, College of Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; (D.Y.); (T.-B.A.)
| | - Wonwoong Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Woosuk University, Wanju 55338, Republic of Korea
| | - Jongki Hong
- College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea;
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9
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Uher M, Mičuda S, Kacerovský M, Hroch M. An alternative approach to validation of liquid chromatography-mass spectrometry methods for the quantification of endogenous compounds. J Chromatogr A 2023; 1705:464173. [PMID: 37392639 DOI: 10.1016/j.chroma.2023.464173] [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: 01/25/2023] [Revised: 04/13/2023] [Accepted: 06/18/2023] [Indexed: 07/03/2023]
Abstract
Despite the progress in the quantification of xenobiotics, the development and validation of methods designed for endogenous substances still remain challenging due to the natural presence of the analytes in a biological matrix, leading to the inability to obtain a blank sample. Several generally recognized procedures are described to solve this issue, like using surrogate or analyte-depleted matrices or surrogate analytes. However, the workflows used do not always meet the requirements for developing a reliable analytical method or are cost-intensive. This study aimed to design an alternative approach for preparing validation reference samples using authentic analytical standards while preserving the nature of the biological matrix and solving the problem with the inherent presence of analyzed compounds in a studied matrix. The methodology used is based on the standard-addition type procedure. However, unlike the original method, the addition is modified according to a previously measured basal concentration of monitored substances in the pooled biological sample to obtain a predefined concentration in reference samples according to the European Medicines Agency (EMA) validation guideline. The study shows the advantages of described approach on an example of LC-MS/MS analysis of 15 bile acids in human plasma and compares it with other methods commonly used in this field. The method was successfully validated according to the EMA guideline with lower limit of quantification of 5 nmol/L and linearity in the range of 5 - 2000 nmol/L. Finally, the method was used in a metabolomic study on a cohort of pregnant women (n = 28) to confirm intrahepatic cholestasis, the major liver disease observed in pregnancy.
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Affiliation(s)
- Martin Uher
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Králové, Charles University, Šimkova 870, Hradec Králové 500 03, Czech Republic
| | - Stanislav Mičuda
- Department of Pharmacology, Faculty of Medicine in Hradec Králové, Charles University, Šimkova 870, Hradec Králové 500 03, Czech Republic
| | - Marian Kacerovský
- Department of Obstetrics and Gynecology, University Hospital, Hradec Králové, Sokolská 581, Hradec Králové 500 05, Czech Republic
| | - Miloš Hroch
- Department of Medical Biochemistry, Faculty of Medicine in Hradec Králové, Charles University, Šimkova 870, Hradec Králové 500 03, Czech Republic.
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10
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Fanti F, Vincenti F, Imparato G, Montesano C, Scipioni L, Ciaramellano F, Tortolani D, Oddi S, Maccarrone M, Compagnone D, Sergi M. Determination of endocannabinoids and their conjugated congeners in the brain by means of μSPE combined with UHPLC-MS/MS. Talanta 2023; 257:124392. [PMID: 36863295 DOI: 10.1016/j.talanta.2023.124392] [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: 08/10/2022] [Revised: 02/20/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023]
Abstract
The present study encompasses the development of a fast and reliable analytical method to quantify the main endocannabinoids and some of their conjugated congeners, particularly N-arachidonoyl amino acids, in brain tissue. Samples were homogenized and a micro solid phase extraction (μSPE) procedure was developed for brain homogenate clean-up. Miniaturized SPE was selected as it allowed to work with reduced sample amounts, while maintaining high sensitivity; this last feature was mandatory due to the low concentration of endocannabinoids in biological matrices that makes their determination a challenging analytical task. UHPLC-MS/MS was used for the analysis as it provided a great sensitivity, especially for conjugated forms that were detected by negative ionization. Polarity switching was applied during the run; low limits of quantification were between 0.003 ng g-1 and 0.5 ng g-1. This method provided also low matrix effect (lower than 30%) and good extraction recoveries in the brain. To the best of our knowledge, this is the first time that μSPE is applied on this matrix for this class of compounds. The method was validated according to international guidelines, and then tested on real cerebellum samples from mice, which were sub-chronically treated with URB597, a well-known inhibitor of the fatty acid amide hydrolase.
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Affiliation(s)
- Federico Fanti
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100, Teramo, Italy
| | - Flaminia Vincenti
- Department of Chemistry, Sapienza University of Rome, 00185, Rome, Italy
| | - Giulia Imparato
- Department of Physics, Sapienza University of Rome, 00185, Rome, Italy
| | - Camilla Montesano
- Department of Chemistry, Sapienza University of Rome, 00185, Rome, Italy.
| | - Lucia Scipioni
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, 67100, L'Aquila, Italy; European Center for Brain Research (CERC)/Santa Lucia Foundation IRCCS, 00143, Rome, Italy
| | - Francesca Ciaramellano
- European Center for Brain Research (CERC)/Santa Lucia Foundation IRCCS, 00143, Rome, Italy; Faculty of Veterinary Medicine, University of Teramo, 64100, Teramo, Italy
| | - Daniel Tortolani
- European Center for Brain Research (CERC)/Santa Lucia Foundation IRCCS, 00143, Rome, Italy; Faculty of Veterinary Medicine, University of Teramo, 64100, Teramo, Italy
| | - Sergio Oddi
- European Center for Brain Research (CERC)/Santa Lucia Foundation IRCCS, 00143, Rome, Italy; Faculty of Veterinary Medicine, University of Teramo, 64100, Teramo, Italy
| | - Mauro Maccarrone
- Department of Biotechnological and Applied Clinical Sciences, University of L'Aquila, 67100, L'Aquila, Italy; European Center for Brain Research (CERC)/Santa Lucia Foundation IRCCS, 00143, Rome, Italy.
| | - Dario Compagnone
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100, Teramo, Italy
| | - Manuel Sergi
- Department of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100, Teramo, Italy; Department of Chemistry, Sapienza University of Rome, 00185, Rome, Italy
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11
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Coglianese A, Charlier B, Mensitieri F, Filippelli A, Izzo V, Dal Piaz F. Standard addition method (SAM) in LC-MS/MS to quantify gluten-derived metabolites in urine samples. J Pharm Biomed Anal 2023; 232:115416. [PMID: 37120973 DOI: 10.1016/j.jpba.2023.115416] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/03/2023] [Accepted: 04/21/2023] [Indexed: 05/02/2023]
Abstract
A tight adherence to a gluten-free diet (GFD), the most effective treatment currently available for celiac disease, is important to reduce symptoms, avoid nutritional deficiencies and improve quality of life in celiac patients. The development of analytical methods allowing detecting gluten exposure due to occasional or involuntary food transgressions could represent a useful tool to monitor patient habits and conditions and prevent long-term complications. The aim of this work was to develop and validate an approach based on the standard addition methodology (SAM) for the detection and quantification of two main metabolites of alkylresorcinols, 3,5-dihydroxybenzoic acid (DHBA) and 3-(3,5-dihydroxyphenyl)-propanoic acid (DHPPA), whose presence in urine samples is related to the intake of gluten-containing foods. Analytically, the method consisted of a protein precipitation step followed by liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) analysis. The chromatographic method involved the use of a hydrophilic interaction liquid chromatography (HILIC) in a direct phase approach; LC-MS/MS analyses were performed in selected reaction monitoring (SRM) mode. Manipulation and instrumental errors were normalised using stable isotopic standards (ISs). The SAM approach here described requires less than 1 mL of urine per sample, thus greatly reducing the sample volume needed. Noteworthy, despite the small cohort of samples analysed, our data allowed to identify a potential "threshold" value, around 200 ng/mL for DHBA and 400 ng/mL for DHPPA, to discriminate between a GFD and a gluten rich diet (GRD).
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Affiliation(s)
- Albino Coglianese
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; Graduate School in Clinical Pathology and Clinical Biochemistry, University of Salerno, Salerno, SA, Italy
| | - Bruno Charlier
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; University Hospital San Giovanni di Dio e Ruggi d'Aragona, Salerno, SA, Italy
| | - Francesca Mensitieri
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy
| | - Amelia Filippelli
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; University Hospital San Giovanni di Dio e Ruggi d'Aragona, Salerno, SA, Italy
| | - Viviana Izzo
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; University Hospital San Giovanni di Dio e Ruggi d'Aragona, Salerno, SA, Italy
| | - Fabrizio Dal Piaz
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana", University of Salerno, Salerno, SA, Italy; University Hospital San Giovanni di Dio e Ruggi d'Aragona, Salerno, SA, Italy.
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12
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Bowman BA, Ejzak EA, Reese CM, Blount BC, Bhandari D. Mitigating Matrix Effects in LC-ESI-MS-MS Analysis of a Urinary Biomarker of Xylenes Exposure. J Anal Toxicol 2023; 47:129-135. [PMID: 35766875 PMCID: PMC10949524 DOI: 10.1093/jat/bkac046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/17/2022] [Accepted: 06/28/2022] [Indexed: 11/15/2022] Open
Abstract
Liquid chromatography-electrospray ionization-tandem mass spectrometry (LC-ESI-MS-MS) with stable isotope-labeled internal standards (SIL-ISs) is the gold standard for quantitative analysis of drugs and metabolites in complex biological samples. Significant isotopic effects associated with deuterium labeling often cause the deuterated IS to elute at a different retention time from the target analyte, diminishing its capability to compensate for matrix effects. In this study, we systematically compared the analytical performance of deuterated (2H) SIL-IS to non-deuterated (13C and 15N) SIL-ISs for quantifying urinary 2-methylhippuric acid (2MHA) and 4-methylhippuric acid (4MHA), biomarkers of xylenes exposure, with an LC-ESI-MS-MS assay. Analytical method comparison between ISs demonstrated a quantitative bias for urinary 2MHA results, with concentrations generated with 2MHA-[2H7] on average 59.2% lower than concentrations generated with 2MHA-[13C6]. Spike accuracy, measured by quantifying the analyte-spiked urine matrix and comparing the result to the known spike concentration, determined that 2MHA-[2H7] generated negatively biased urinary results of -38.4%, whereas no significant bias was observed for 2MHA-[13C6]. Post-column infusion demonstrated that ion suppression experienced by 2MHA and 2MHA-[13C6] was not equally experienced by 2MHA-[2H7], explaining the negatively biased 2MHA results. The quantitation of urinary 4MHA results between ISs exhibited no significant quantitative bias. These results underscore the importance of the careful selection of ISs for targeted quantitative analysis in complex biological samples.
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Affiliation(s)
- Brett A. Bowman
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy NE, Atlanta, GA 30341, USA
- Life Sciences Research, Battelle Memorial Institute, 505 King Avenue, Columbus, OH 43201, USA
| | - Elizabeth A. Ejzak
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy NE, Atlanta, GA 30341, USA
- Life Sciences Research, Battelle Memorial Institute, 505 King Avenue, Columbus, OH 43201, USA
| | - Christopher M. Reese
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy NE, Atlanta, GA 30341, USA
| | - Benjamin C. Blount
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy NE, Atlanta, GA 30341, USA
| | - Deepak Bhandari
- Tobacco and Volatiles Branch, Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, 4770 Buford Hwy NE, Atlanta, GA 30341, USA
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13
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Sarmad S, Viant MR, Dunn WB, Goodacre R, Wilson ID, Chappell KE, Griffin JL, O'Donnell VB, Naicker B, Lewis MR, Suzuki T. A proposed framework to evaluate the quality and reliability of targeted metabolomics assays from the UK Consortium on Metabolic Phenotyping (MAP/UK). Nat Protoc 2023; 18:1017-1027. [PMID: 36828894 DOI: 10.1038/s41596-022-00801-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 11/24/2022] [Indexed: 02/26/2023]
Abstract
Targeted metabolite assays that measure tens or hundreds of pre-selected metabolites, typically using liquid chromatography-mass spectrometry, are increasingly being developed and applied to metabolic phenotyping studies. These are used both as standalone phenotyping methods and for the validation of putative metabolic biomarkers obtained from untargeted metabolomics studies. However, there are no widely accepted standards in the scientific community for ensuring reliability of the development and validation of targeted metabolite assays (referred to here as 'targeted metabolomics'). Most current practices attempt to adopt, with modifications, the strict guidance provided by drug regulatory authorities for analytical methods designed largely for measuring drugs and other xenobiotic analytes. Here, the regulatory guidance provided by the European Medicines Agency, US Food and Drug Administration and International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use are summarized. In this Perspective, we have adapted these guidelines and propose a less onerous 'tiered' approach to evaluate the reliability of a wide range of metabolomics analyses, addressing the need for community-accepted, harmonized guidelines for tiers other than full validation. This 'fit-for-purpose' tiered approach comprises four levels-discovery, screening, qualification and validation-and is discussed in the context of a range of targeted and untargeted metabolomics assays. Issues arising with targeted multiplexed metabolomics assays, and how these might be addressed, are considered. Furthermore, guidance is provided to assist the community with selecting the appropriate degree of reliability for a series of well-defined applications of metabolomics.
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Affiliation(s)
- Sarir Sarmad
- Department of Cardiovascular Sciences, University of Leicester and NIHR Leicester Biomedical Research Centre, Leicester, UK
| | - Mark R Viant
- Phenome Centre Birmingham, University of Birmingham, Birmingham, UK
| | - Warwick B Dunn
- Centre for Metabolomics Research, Department of Biochemistry and Systems Biology, Institute of Systems, Molecular, and Integrative Biology, University of Liverpool, Liverpool, UK.,Institute of Metabolism and Systems Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Royston Goodacre
- Centre for Metabolomics Research, Department of Biochemistry and Systems Biology, Institute of Systems, Molecular, and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Ian D Wilson
- Division of Systems Medicine, Department of Metabolism, Digestion & Reproduction, Imperial College London, London, UK
| | - Katie E Chappell
- The National Phenome Centre, Department of Metabolism, Digestion & Reproduction, Imperial College London, London, UK
| | - Julian L Griffin
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, UK
| | - Valerie B O'Donnell
- Systems Immunity Research Institute, School of Medicine, Cardiff University, Cardiff, UK
| | - Brendon Naicker
- Systems Immunity Research Institute, School of Medicine, Cardiff University, Cardiff, UK
| | - Matthew R Lewis
- The National Phenome Centre, Department of Metabolism, Digestion & Reproduction, Imperial College London, London, UK
| | - Toru Suzuki
- Department of Cardiovascular Sciences, University of Leicester and NIHR Leicester Biomedical Research Centre, Leicester, UK. .,The Institute of Medical Science, The University of Tokyo, Tokyo, Japan.
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14
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Garwolińska D, Kot-Wasik A, Hewelt-Belka W. Pre-analytical aspects in metabolomics of human biofluids - sample collection, handling, transport, and storage. Mol Omics 2023; 19:95-104. [PMID: 36524542 DOI: 10.1039/d2mo00212d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Metabolomics is the field of omics research that offers valuable insights into the complex composition of biological samples. It has found wide application in clinical diagnostics, disease investigation, therapy prediction, monitoring of treatment efficiency, drug discovery, or in-depth analysis of sample composition. A suitable study design constitutes the fundamental requirements to ensure robust and reliable results from the study data. The study design process should include a careful selection of conditions for each experimental step, from sample collection to data analysis. The pre-analytical variability that can introduce bias to the subsequent analytical process, decrease the outcome reliability, and confuse the final results of the metabolomics research, should also be considered. Herein, we provide key information regarding the pre-analytical variables affecting the metabolomics studies of biological fluids that are the most desirable type of biological samples. Our work offers a practical review that can serve and guide metabolomics pre-analytical design. It indicates pre-analytical factors, which can introduce artificial data variation and should be identified and understood during experimental design (through literature overview or analytical experiments).
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Affiliation(s)
- Dorota Garwolińska
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Agata Kot-Wasik
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland.
| | - Weronika Hewelt-Belka
- Department of Analytical Chemistry, Faculty of Chemistry, Gdańsk University of Technology, Gabriela Narutowicza 11/12, 80-233 Gdańsk, Poland.
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15
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Quantification of Proteins in Blood by Absorptive Microtiter Plate-Based Affinity Purification Coupled to Liquid Chromatography-Mass Spectrometry. Methods Mol Biol 2023; 2628:221-233. [PMID: 36781789 DOI: 10.1007/978-1-0716-2978-9_15] [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: 02/15/2023]
Abstract
Liquid chromatography (LC) coupled to mass spectrometry (MS) is increasingly used for quantification of proteins in blood. This development is prompted by ongoing improvements in detection sensitivities of LC-MS instruments and corresponding sample preparation workflows. The combination of immunoaffinity enrichment and targeted LC-MS detection is a notable analytical platform in this regard as it allows for the quantification of low abundance proteins in biological matrices like plasma and serum. Here, we describe such hybrid methods which are based on the enrichment of proteins with antibodies or affimers coupled to adsorptive microtiter plates, the proteolytic digestion of enriched proteins to release protein-specific peptides, and the detection of these peptides by microflow LC coupled to selected reaction monitoring MS.
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16
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Use of a guard column coupled to mass spectrometry as a fast semi-quantitative methodology for the determination of plasticizer metabolites in urine. J Chromatogr A 2023; 1690:463788. [PMID: 36649666 DOI: 10.1016/j.chroma.2023.463788] [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: 11/30/2022] [Revised: 01/04/2023] [Accepted: 01/08/2023] [Indexed: 01/11/2023]
Abstract
For the first time, a very simple and fast method combining the use of a guard column coupled to tandem mass spectrometry (guard column-MS/MS) has been proposed for the determination of plasticizer metabolites in urine. Briefly, samples (1.0 mL) were submitted to enzymatic hydrolysis for 10 min, filtered, diluted 1/10 v/v with ultrapure water and directly injected into the system. A fast run of only 2 min (3 min including the injection cycle) allowed the determination of 19 analytes. Enzymatic hydrolysis, filtering material, and guard column-MS/MS conditions were optimized. Intra-day precision at the low-level concentration (expressed as relative standard deviation, %RSD) obtained from the analysis of synthetic urine samples varied between 11 and 20%. Limits of quantification ranged from 2.8 to 60 ng/mL. Trueness values, calculated as apparent recoveries, ranged from 70 to 135%. To correct for matrix effects, analyte concentrations in real urine were quantified by the standard addition method. To confirm the results obtained by guard column-MS/MS, an ultra(high)-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS) method was also applied (total chromatographic run time 17 min, including column re-equilibration). Concentrations measured with both methods were in good agreement. Hence, we propose the use of guard column-MS/MS to analyse a large number samples in a very short time (semi-quantification), and apply the chromatographic analysis only to those samples with levels close to/higher than the concentrations equivalent to the safe maximum daily intakes of the parent compounds (confirmation). This double strategy (semi-quantification by guard column-MS/MS and confirmation-when needed-by UHPLC-MS/MS) implies important savings in time and money.
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17
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Visconti G, Boccard J, Feinberg M, Rudaz S. From fundamentals in calibration to modern methodologies: A tutorial for small molecules quantification in liquid chromatography-mass spectrometry bioanalysis. Anal Chim Acta 2023; 1240:340711. [PMID: 36641149 DOI: 10.1016/j.aca.2022.340711] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 12/05/2022] [Accepted: 12/06/2022] [Indexed: 12/12/2022]
Abstract
Over the last two decades, liquid chromatography coupled to mass-spectrometry (LC‒MS) has become the gold standard to perform qualitative and quantitative analyses of small molecules. When quantitative analysis is developed, an analyst usually refers to international guidelines for analytical method validation. In this context, the design of calibration curves plays a key role in providing accurate results. During recent years and along with instrumental advances, strategies to build calibration curves have dramatically evolved, introducing innovative approaches to improve quantitative precision and throughput. For example, when a labeled standard is available to be spiked directly into the study sample, the concentration of the unlabeled analog can be easily determined using the isotopic pattern deconvolution or the internal calibration approach, eliminating the need for multipoint calibration curves. This tutorial aims to synthetize the advances in LC‒MS quantitative analysis for small molecules in complex matrices, going from fundamental aspects in calibration to modern methodologies and applications. Different work schemes for calibration depending on the sample characteristics (analyte and matrix nature) are distinguished and discussed. Finally, this tutorial outlines the importance of having international guidelines for analytical method validation that agree with the advances in calibration strategies and analytical instrumentation.
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Affiliation(s)
- Gioele Visconti
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland
| | - Julien Boccard
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland
| | | | - Serge Rudaz
- School of Pharmaceutical Sciences, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland; Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, CMU - Rue Michel-Servet 1, 1211, Geneva, Switzerland.
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18
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Ilyushenkova VV, Zimens ME, Polovkov NY, Topolyan AP, Borisov RS, Zaikin VG. Derivatization to increase the detectability of small peptides in blood serum in the analysis by ESI and MALDI high resolution mass spectrometric methods. Talanta 2023; 253:123922. [PMID: 36122435 DOI: 10.1016/j.talanta.2022.123922] [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: 07/25/2022] [Revised: 08/26/2022] [Accepted: 09/04/2022] [Indexed: 12/13/2022]
Abstract
This work highlights the efficient approach to highly sensitive determination of dipeptides that can present in biological liquids at very low and trace quantities. The approach involves preliminary derivatization of peptides with tris(2,4,6-trimethoxyphenyl)-methyl carbenium hexafluoroborate followed by ESI and MALDI high-resolution mass spectrometry. Using model dipeptides with various amino acid compositions and sequences, it was shown that the derivatization reaction proceeded smoothly in mild conditions and gave rise to pink-red colored salt derivatives. Ready cations of interest for the analysis are easily desorbed from the salt-derivatives providing strong signals in ESI and MALDI mass spectra and this ensures high sensitivity of the analysis. Another positive aspect is the removal of the target signal from the region of a matrix noise, since the introduced fragment possesses a large mass increment (359 Da). High resolution mass spectrometry, which provides the determination of accurate weights and elemental compositions of ions, was used to reliably detect model dipeptides added to artificial urine and blood serum. A number of these dipeptides was shown to be present in real blood serum collected from volunteers. Collision induced dissociation of precursor cations composed of derivatizing reagent and dipeptide moieties gives rise to characteristic and simple fragmentation mass spectra. A comparison of limits of detection (LOD) measured for non-modified and derivatized dipeptides showed that the latter derivatives provide the highest sensitivity when LOD is determined by using multiple reaction monitoring (MRM) transitions. The suggested derivatization approach was shown to be useful for unambiguous identification of special dipeptides in artificial media and dietary supplements.
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Affiliation(s)
- Valentina V Ilyushenkova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow, 119991, Russian Federation
| | - Marina E Zimens
- A.V.Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky pr., 119991, Moscow, Russia
| | - Nikolay Yu Polovkov
- A.V.Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky pr., 119991, Moscow, Russia
| | - Artyom P Topolyan
- Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, Moscow, 125047, Russia
| | - Roman S Borisov
- A.V.Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky pr., 119991, Moscow, Russia; Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, Moscow, 125047, Russia.
| | - Vladimir G Zaikin
- A.V.Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninsky pr., 119991, Moscow, Russia
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19
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Steuer AE, Sutter L, Steuer C, Kraemer T. New gamma-hydroxybutyric acid (GHB) biomarkers: Development and validation of a liquid chromatography-tandem mass spectrometry method for the determination of GHB amino acid, carnitine, and fatty acid conjugates in urine. Drug Test Anal 2022; 15:426-443. [PMID: 36562189 DOI: 10.1002/dta.3430] [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: 10/21/2022] [Revised: 12/02/2022] [Accepted: 12/21/2022] [Indexed: 12/24/2022]
Abstract
Gamma-hydroxybutyric acid (GHB) represents an important drug in clinical and forensic toxicology, particularly in the context of drug-facilitated crimes. Analytically, GHB remains a major challenge given its endogenous occurrence and short detection window. Previous studies identified a number of potential interesting novel conjugates of GHB with carnitine, amino acids (AA, glutamate, glycine, and taurine), or fatty acids. As a basis for comprehensive studies on the suitability of these novel biomarkers, we developed and validated a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method in human urine. Additionally, already known markers 2,4-dihydroxy butyric acid (2,4-DHB), 3,4-DHB, glycolic acid, succinic acid, succinylcarnitine, and GHB glucuronide were included. The method was fully validated according to (inter)national guidelines. Synthetic urine proved suitable as a surrogate matrix for calibration. Matrix effects were observed for all analytes with suppression effects of about 50% at QC LOW, and approximately 20% to 40% at QC HIGH, but with consistent standard deviation of <25% at QC LOW and <15% at QC HIGH, respectively. All analytes showed acceptable intra- and inter-day imprecision of below 20%, except for inter-day variation of GHB taurine and FA conjugates at the lowest QC. Preliminary applicability studies proved the usefulness of the method and pointed towards GHB glycine, followed by other AA conjugates as the most promising candidates to improve GHB detection. FA conjugates were not detected in urine samples yet. The method can be used now for comprehensive sample analysis on (controlled) GHB administration to prove the usefulness of the novel GHB biomarkers.
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Affiliation(s)
- Andrea E Steuer
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Linda Sutter
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Christian Steuer
- Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology Zurich, Zurich, Switzerland
| | - Thomas Kraemer
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
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Sivamani P, Eriyat V, Mathew SK, Singh A, Aaron R, Chacko RT, Joel A, Prabha R, Mathew BS. Identification of DPYD variants and estimation of uracil and dihydrouracil in a healthy Indian population. Per Med 2022; 20:39-53. [DOI: 10.2217/pme-2022-0042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Aim: This study aimed to identify DPYD variants and the related but previously unexplored phenotype (plasma uracil, dihydrouracil [DHU], and the DHU-to-uracil ratio) in a healthy adult Indian population. Methods: Healthy adult volunteers (n = 100) had their uracil and DHU levels measured and were genotyped for selected variants. Results: Among the nine variants studied, c.1906-14763G>A and c.85T>C were the most prevalent. Participants with any of the variants except for c.85T>C and c.1627A>G had a significantly lower DHU-to-uracil ratio and those with c.1905+1G>A variant had significantly increased uracil concentration compared with wild type. Conclusion: Participants with five variants were identified as having altered phenotypic measures, and 40% of the intermediate metabolizers had their phenotype in the terminal population percentiles.
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Affiliation(s)
- Poornima Sivamani
- Department of Pharmacology & Clinical Pharmacology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Vishnu Eriyat
- Department of Pharmacology & Clinical Pharmacology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Sumith K Mathew
- Department of Pharmacology & Clinical Pharmacology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Ashish Singh
- Department of Medical Oncology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Rekha Aaron
- Department of Clinical Genetics, Christian Medical College, Vellore, Tamil Nadu, India
| | - Raju Titus Chacko
- Department of Medical Oncology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Anjana Joel
- Department of Medical Oncology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Ratna Prabha
- Department of Pharmacology & Clinical Pharmacology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Binu Susan Mathew
- Department of Pharmacology & Clinical Pharmacology, Christian Medical College, Vellore, Tamil Nadu, India
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21
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García-García S, Matilla-González H, Peña J, del Nogal Sánchez M, Casas-Ferreira AM, Pérez Pavón JL. Determination of Hydroxy Polycyclic Aromatic Hydrocarbons in Human Urine Using Automated Microextraction by Packed Sorbent and Gas Chromatography-Mass Spectrometry. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192013089. [PMID: 36293669 PMCID: PMC9602966 DOI: 10.3390/ijerph192013089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/05/2022] [Accepted: 10/10/2022] [Indexed: 05/10/2023]
Abstract
A fast methodology for the determination of monohydroxy polycyclic aromatic hydrocarbons in human urine using a fully automated microextraction by packed sorbent coupled to a gas chromatograph-mass spectrometer is reported. Sample preparation requires simple hydrolysis, centrifugation, filtration, and dilution. The method does not require a derivatization step prior to analysis with gas chromatography and allows the measurement of up to three samples per hour after hydrolysis. Quantitation is carried out by a one-point standard addition allowing the determination of 6 analytes with good limits of detection (10.1-39.6 ng L-1 in water and 0.5-19.4 µg L-1 in urine), accuracy (88-110%) and precision (2.1-23.4% in water and 5.1-19.0% in urine) values. This method has been successfully applied to the analysis of six urine samples (three from smoker and three from non-smoker subjects), finding significant differences between both types of samples. Results were similar to those found in the literature for similar samples, which proves the applicability of the methodology.
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22
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Metabolic alterations of short-chain fatty acids and TCA cycle intermediates in human plasma from patients with gastric cancer. Life Sci 2022; 309:121010. [PMID: 36181864 DOI: 10.1016/j.lfs.2022.121010] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/22/2022] [Accepted: 09/25/2022] [Indexed: 11/21/2022]
Abstract
AIMS Short-chain fatty acids (SCFAs) are produced by gut microbiota from dietary fiber. Since absorbed SCFAs could be introduced into the tricarboxylic acid (TCA) cycle in host cells, the relationships between SCFAs and TCA cycle intermediates might influence to energy metabolism in the human body. For this reason, information on profile changes between SCFAs and TCA cycle intermediates could help unveil pathological mechanisms of gastric cancer. MAIN METHODS A gas chromatography-tandem mass spectrometry (GC-MS/MS) method was developed to simultaneously determine SCFAs and TCA cycle intermediates in human plasma from patients with chronic superficial gastritis (CSG), intestinal metaplasia (IM), and gastric cancer. We applied a tetra-alkyl ammonium pairing method to prevent loss of volatile SCFAs and base decarboxylation of TCA cycle intermediates during sample preparation. To assess gastric diseases, metabolic alterations of SCFAs and TCA cycle intermediates in human plasma with gastric disorders were analyzed by their plasma levels. KEY FINDINGS Significantly different metabolic alterations based on the plasma levels of SCFAs and TCA cycle intermediates were investigated in cancer metabolic pathways. Not only propionate and butyrate, mainly produced by gut microbiota, were significantly decreased, but also cis-aconitate, α-ketoglutarate, and fumarate were significantly increased in plasma with IM or gastric cancer, compared to CSG. Further, based on ratios of product to precursor, three metabolic pathways (succinate/propionate, succinate/α-ketoglutarate, and cis-aconitate/citrate) were supposed to be distorted between gastric diseases. SIGNIFICANCE In conclusion, propionate, cis-aconitate, α-ketoglutarate, and fumarate could be used to assess the progression of gastric cancer.
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23
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Method development workflow for quantifying protein biomarkers by hybrid LC-MS/MS. Bioanalysis 2022; 14:985-1004. [PMID: 36066044 DOI: 10.4155/bio-2022-0058] [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: 11/17/2022] Open
Abstract
Background: Industry-standard guidance on method development and validation of hybrid LC-MS/MS assays for protein biomarkers, particularly on evaluation of parallelism, is lacking. Methods: Using a protein endogenous to humans and mice as a model analyte, a quantitative hybrid LC-MS/MS workflow was developed using a surrogate matrix approach with a recombinant form of the protein as the calibrant. Results: The developed workflow identified a surrogate matrix, established parallelism between the surrogate and authentic matrices and assessed parallelism between the recombinant and authentic forms of the protein. The final method was qualified using precision and accuracy with recovery assessments. Conclusion: The established workflow can be used in future bioanalytical studies to develop effective hybrid LC-MS/MS methods for endogenous protein biomarkers.
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24
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Nadour Z, Simian C, Laprévote O, Loriot MA, Larabi IA, Pallet N. Validation of a liquid chromatography coupled to tandem mass spectrometry method for simultaneous quantification of tryptophan and 10 key metabolites of the kynurenine pathway in plasma and urine: Application to a cohort of acute kidney injury patients. Clin Chim Acta 2022; 534:115-127. [PMID: 35870540 DOI: 10.1016/j.cca.2022.07.009] [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: 04/08/2022] [Revised: 06/30/2022] [Accepted: 07/11/2022] [Indexed: 11/29/2022]
Abstract
A sensitive and rapid liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was developed and validated for the simultaneous determination of tryptophan (Trp) and ten metabolites of kynurenine pathway, including kynurenine (Kyn), 3-hydroxy-kynurenine (3-HK), kynurenic acid (KA), xanthurenic acid (XA), 3-Hydroxy-anthranilic acid (3-HANA), quinolinic acid (QA), nicotinic acid mononucleotide (NaMN), picolinic acid (Pic), nicotinamide (NAM) and nicotinic acid (NA) in both plasma and urine. This LC-MS/MS method was used to predict the occurrence of acute kidney injury (AKI) in a cohort of patients with cardiac surgery under cardiopulmonary bypass (CPB). Urinary concentrations of Pic, as well as Pic to Trp and Pic to 3-HANA ratios were highly predictive of an AKI episode the week after CPB, indicating that Pic could be a predictive biomarker of AKI. Thus, monitoring the kynurenine pathway activity with this LC-MS/MS method is a clinically relevant tool to identify new biomarkers of kidney injury.
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Affiliation(s)
- Zahia Nadour
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France; Paris University, INSERM UMRS1138, Centre de Recherche des Cordeliers, 15 rue de l'Ecole de médecine, 75006 Paris, France.
| | - Christophe Simian
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France
| | - Olivier Laprévote
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France
| | - Marie-Anne Loriot
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France; Paris University, INSERM UMRS1138, Centre de Recherche des Cordeliers, 15 rue de l'Ecole de médecine, 75006 Paris, France
| | - Islam Amine Larabi
- Department of Pharmacology and Toxicology, Paris-Saclay University (Versailles Saint-Quentin-En-Yvelines University), Inserm U-1173, Raymond Poincaré Hospital, AP-HP, 104 Boulevard Raymond Poincaré, 92380 Garches, France
| | - Nicolas Pallet
- Department of Clinical Chemistry, Georges Pompidou European Hospital, AP-HP, 20 rue Leblanc, 75015 Paris, France; Paris University, INSERM UMRS1138, Centre de Recherche des Cordeliers, 15 rue de l'Ecole de médecine, 75006 Paris, France
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25
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Restin T, Byland N, Voegel CD, La Marca-Ghaemmaghami P, Baumgartner MR, Bassler D, Kraemer T, Binz TM. Endocannabinoid and steroid analysis in infant and adult nails by LC-MS/MS. Anal Bioanal Chem 2022; 414:6201-6211. [PMID: 35781588 PMCID: PMC9314307 DOI: 10.1007/s00216-022-04189-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 05/11/2022] [Accepted: 06/20/2022] [Indexed: 12/04/2022]
Abstract
A common method to quantify chronic stress is the analysis of stress markers in keratinized matrices such as hair or nail. In this study, we aimed to validate a sensitive liquid chromatography–tandem mass spectrometry (LC–MS/MS) method for the combined quantification of steroid hormones and endocannabinoids (eCBs) in the keratinized matrix nail. Furthermore, we aimed to investigate the suitability of the nail matrix for the detection of these stress markers in a pilot study. An LC–MS/MS method was used for the simultaneous identification and quantification of four eCBs (2-arachidonoylglycerol (2-AG), anandamide (AEA), oleoylethanolamide (OEA), palmitoylethanolamide (PEA)) and five steroid hormones (cortisol, cortisone, androstenedione, progesterone, testosterone) in human nails using a surrogate analyte method for each analyte. The method was validated in terms of selectivity, response factor, linearity, limit of quantification (LOQ), precision, accuracy, matrix effect, recovery, robustness, and autosampler stability. Nail samples were extracted for 1 h with methanol following a clean-up with a fully automated supported liquid extraction (SLE). The influence of nail weight on the quantification was investigated by using 0.5–20 mg of nail sample. As a proof of concept, nail samples (N = 57) were analyzed from a cohort representing newborns (1 month old), children (between 1 and 10 years), and adults (up to 43 years). It could be shown that the established workflow using a 1 hour extraction and clean-up by SLE was very robust and resulted in a short sample preparation time. The LC–MS/MS method was successfully validated. Matrix effects with ion enhancement occurred mainly for 2-AG. Sample weights below 5 mg showed variations in quantification for some analytes. Certain analytes such as PEA and progesterone could be accurately quantified at a sample weight lower than 5 mg. This is the first study where steroids and eCBs could be simultaneously detected and quantified in infant and adult nails. These results show that nails may serve as an alternative keratinized matrix (compared to hair) for the retrospective monitoring of cumulative eCB and steroid hormone levels. The combined assessment of eCBs and steroids from nails could provide a new approach to gain new insights into stress exposure in newborns and adults.
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Affiliation(s)
- Tanja Restin
- Newborn Research Zurich, Department of Neonatology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Nastassja Byland
- Center for Forensic Hair Analytics, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Clarissa D Voegel
- Center for Forensic Hair Analytics, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Pearl La Marca-Ghaemmaghami
- Psychology Counselling and Research Institute for Sexuality, Marriage and the Family, International Academy for Human Sciences and Culture, Walenstadt, Switzerland
| | - Markus R Baumgartner
- Center for Forensic Hair Analytics, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Dirk Bassler
- Newborn Research Zurich, Department of Neonatology, University Hospital Zurich and University of Zurich, Zurich, Switzerland
| | - Thomas Kraemer
- Department of Forensic Pharmacology and Toxicology, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland
| | - Tina M Binz
- Center for Forensic Hair Analytics, Zurich Institute of Forensic Medicine, University of Zurich, Zurich, Switzerland.
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26
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Luo Y, Zhang C, Ma L, Zhang Y, Liu Z, Chen L, Wang R, Luan Y, Rao Y. Measurement of 7-dehydrocholesterol and cholesterol in hair can be used in the diagnosis of Smith-Lemli-Opitz syndrome. J Lipid Res 2022; 63:100228. [PMID: 35577137 PMCID: PMC9207299 DOI: 10.1016/j.jlr.2022.100228] [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: 03/03/2022] [Revised: 05/06/2022] [Accepted: 05/08/2022] [Indexed: 11/20/2022] Open
Abstract
7-dehydrocholesterol (7-DHC) and cholesterol (CHOL) are biomarkers of Smith-Lemli-Opitz Syndrome (SLOS), a congenital autosomal recessive disorder characterized by elevated 7-DHC level in patients. Hair samples have been shown to have great diagnostic and research value, which has long been neglected in the SLOS field. In this study, we sought to investigate the feasibility of using hair for SLOS diagnosis. In the presence of antioxidants (2,6-ditert-butyl-4-methylphenol and triphenylphosphine), hair samples were completely pulverized and extracted by micro-pulverized extraction in alkaline solution or in n-hexane. After microwave-assisted derivatization with N,O-Bis(trimethylsilyl)trifluoroacetamide, the analytes were measured by GC-MS. We found that the limits of determination for 7-DHC and CHOL were 10 ng/mg and 8 ng/mg, respectively. In addition, good linearity was obtained in the range of 50–4000 ng/mg and 30–6000 ng/mg for 7-DHC and CHOL, respectively, which fully meets the requirement for SLOS diagnosis and related research. Finally, by applying the proposed method to real hair samples collected from 14 healthy infants and two suspected SLOS patients, we confirmed the feasibility of hair analysis as a diagnostic tool for SLOS. In conclusion, we present an optimized and validated analytical method for the simultaneous determination of two SLOS biomarkers using human hair.
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27
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Li Z, Liu M, Chen C, Pan Y, Cui X, Sun J, Zhao F, Cao Y. Simultaneous determination of serum homocysteine, cysteine and methionine in patients with schizophrenia by liquid chromatography-tandem mass spectrometry. Biomed Chromatogr 2022; 36:e5366. [PMID: 35274340 DOI: 10.1002/bmc.5366] [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: 10/10/2021] [Revised: 02/21/2022] [Accepted: 03/01/2022] [Indexed: 11/09/2022]
Abstract
Schizophrenia is a debilitating psychiatric disorder affecting approximately 1% of the population worldwide. Disturbances of the homocysteine metabolism are important factors in the pathophysiology of schizophrenia. In this research, a novel validated LC-MS/MS quantification procedure was developed to investigate three significant compounds of homocysteine metabolism, homocysteine, cysteine and methionine in patients with schizophrenia and healthy controls. Sample preparation involved a reduction with dithiothreitol followed by protein precipitation, and the chromatographic runtime was 2 min. The LC-MS/MS method was validated according to CLSI C62-A and Chinese Guidance for Liquid Chromatography and Mass Spectrometry Clinical Application. The performance of the method was excellent with a coefficient of variation for precision in the range 0.5%-6.9%, an accuracy from 90.4% to 101.6%. In addition, the practical applicability of the method was demonstrated by applying it in the routine sample analysis for the schizophrenic patient. Increased homocysteine levels and decreased cysteine levels were observed in the patient with schizophrenia. These results indicate that the activity of transsulfuration pathway may play a key role in the pathogenesis of schizophrenia.
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Affiliation(s)
- Zhenguo Li
- The Second Hospital of Dalian Medical University, Dalian, P. R. China
| | - Mingli Liu
- Dalian Runsheng Kangtai Medical Lab Co. Ltd, Dalian, P. R. China
| | - Chunwu Chen
- Shenyang Mental Health Center, Shenyang, P. R. China
| | - Yongqiang Pan
- Dalian Runsheng Kangtai Medical Lab Co. Ltd, Dalian, P. R. China
| | - Xueting Cui
- Dalian Runsheng Kangtai Medical Lab Co. Ltd, Dalian, P. R. China
| | - Jian Sun
- Dalian Runsheng Kangtai Medical Lab Co. Ltd, Dalian, P. R. China
| | - Furong Zhao
- Dalian Runsheng Kangtai Medical Lab Co. Ltd, Dalian, P. R. China
| | - Yunfeng Cao
- Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai, P. R. China.,Dalian Institute of Chemical Physics. Chinese Academy of Sciences, Dalian, P. R. China
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28
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Mishra S, Rajput N, Jadav T, Sahu AK, Tekade RK, Sengupta P. Advancement in Analytical Strategies for Quantification of Biomarkers with a Special Emphasis on Surrogate Approaches. Crit Rev Anal Chem 2022; 53:1515-1530. [PMID: 35138951 DOI: 10.1080/10408347.2022.2035210] [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] [Indexed: 09/23/2023]
Abstract
Accurate quantification of biomarkers has always been a challenge for many bioanalytical scientists due to their endogenous nature and low concentration in biological matrices. Different analytical approaches have been developed for quantifying biomarkers including enzyme-linked immunosorbent assay, immunohistochemistry, western blotting, and chromatographic techniques assisted with mass spectrometry. Liquid chromatography-tandem mass spectrometry-based quantification of biomarkers has gained more attention over other traditional techniques due to its higher sensitivity and selectivity. However, the primary challenge lies with this technique includes the unavailability of a blank matrix for method development. To overcome this challenge, different analytical approaches are being developed including surrogate analyte and surrogate matrix approach. Such approaches include quantification of biomarkers in a surrogate matrix or quantification of an isotopically labeled surrogate analyte in an authentic matrix. To demonstrate the authenticity of the surrogate approach, it is mandatory to establish quantitative parallelism through validation employing respective surrogate analytes and surrogate matrices. In this review, different bioanalytical approaches for biomarker quantification and recent advancements in the field aiming for improvement in the specificity of the techniques have been discussed. Liquid chromatography-tandem mass spectrometry-based surrogate approaches for biomarker quantification and significance of parallelism establishment in both surrogate matrix and surrogate analyte-based approaches have been critically discussed. In addition, different methods for demonstrating parallelism in the surrogate method have been explained.
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Affiliation(s)
- Sonam Mishra
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Niraj Rajput
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Tarang Jadav
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Amit Kumar Sahu
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Rakesh K Tekade
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
| | - Pinaki Sengupta
- National Institute of Pharmaceutical Education and Research-Ahmedabad (NIPER-A), An Institute of National Importance, Government of India, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Gandhinagar, Gujarat, India
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29
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Fernández-del-Campo-García MT, Casas-Ferreira AM, Rodríguez-Gonzalo E, Moreno-Cordero B, Pérez-Pavón JL. Rapid and reliable analysis of underivatized amino acids in urine using tandem mass spectrometry. Microchem J 2022. [DOI: 10.1016/j.microc.2021.106914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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30
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A developed HPLC-MS/MS method to quantitate 5 steriod hormones in clinical human serum by using PBS as the surrogate matrix. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1186:123002. [PMID: 34749247 DOI: 10.1016/j.jchromb.2021.123002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/06/2021] [Accepted: 10/14/2021] [Indexed: 11/22/2022]
Abstract
Steroid hormones play an essential role in regulating physiological and reproductive development throughout the lifetime of an individual. One of the difficulties in determining endogenous substances is the lack of a blank matrix. Especially when the level of analytes is lower than the level in the so-called blank matrix. In the present study, an optimized HPLC-MS/MS method was developed and validated to quantify androstenedione (ASD), testosterone (Ts), dehydroepiandrosterone (DHEA), 5α-dihydrotestosterone (DHT), and progesterone (P) in serum samples from healthy people using PBS (pH = 7.4) as the blank surrogate matrix. Simultaneously, the method investigated the characteristics of NaCl, bull serum albumin, pure water as surrogate matrices for the analysis of steroid hormones. The data showed that the matrix effects of ASD, Ts, DHEA, DHT, and P in the same groups were not significantly different between PBS and twice charcoal-stripped serum (CS2S) as a blank surrogate matrix. Furthermore, the LLOQ using PBS as the blank matrix was up to 0.005 ng/mL for ASD, Ts, and P and 0.05 ng/mL for DHEA and DHT. The reference ranges of concentration (CPBS) of 5 steroid hormones were provided. Compared to the concentration with CS2S (CCSS) as the blank surrogate matrix, the relative biases (RBs) of Ts, DHT, P, and DHEA were finally stabilized at approximately -0.7%, -15%, -1.2%, and 9.2%, respectively. The results suggest that, in the cases of special required, the developed HPLC-MS/MS method can be used to determine the absolute concentration of 5 hormones in biological samples with PBS as the blank surrogate matrix.
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31
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Development and Validation of a LC-MS/MS Technique for the Analysis of Short Chain Fatty Acids in Tissues and Biological Fluids without Derivatisation Using Isotope Labelled Internal Standards. Molecules 2021; 26:molecules26216444. [PMID: 34770853 PMCID: PMC8587764 DOI: 10.3390/molecules26216444] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/13/2021] [Accepted: 10/22/2021] [Indexed: 12/12/2022] Open
Abstract
The gut microbiota is critical to the maintenance of physiological homeostasis and as such is implicated in a range of diseases such as colon cancer, ulcerative colitis, diabetes, cardiovascular diseases, and neurodegenerative diseases. Short chain fatty acids (SCFAs) are key metabolites produced by the gut microbiota from the fermentation of dietary fibre. Here we present a novel, sensitive, and direct LC-MS/MS technique using isotopically labelled internal standards without derivatisation for the analysis of SCFAs in different biological matrices. The technique has significant advantages over the current widely used techniques based on sample derivatization and GC-MS analysis, including fast and simple sample preparation and short LC runtime (10 min). The technique is specific and sensitive for the quantification of acetate, butyrate, isobutyrate, isovalerate, lactate, propionate and valerate. The limits of detection were all 0.001 mM except for acetate which was 0.003 mM. The calibration curves for all the analytes were linear with correlation coefficients r2 > 0.998. The intra- and inter-day precisions in three levels of known concentrations were <12% and <20%, respectively. The quantification accuracy ranged from 92% to 120%. The technique reported here offers a valuable analytical tool for use in studies of SCFA production in the gut and their distribution to host tissues.
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32
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Surendran A, Atefi N, Zhang H, Aliani M, Ravandi A. Defining Acute Coronary Syndrome through Metabolomics. Metabolites 2021; 11:685. [PMID: 34677400 PMCID: PMC8540033 DOI: 10.3390/metabo11100685] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/19/2021] [Accepted: 09/25/2021] [Indexed: 02/06/2023] Open
Abstract
As an emerging platform technology, metabolomics offers new insights into the pathomechanisms associated with complex disease conditions, including cardiovascular diseases. It also facilitates assessing the risk of developing the disease before its clinical manifestation. For this reason, metabolomics is of growing interest for understanding the pathogenesis of acute coronary syndromes (ACS), finding new biomarkers of ACS, and its associated risk management. Metabolomics-based studies in ACS have already demonstrated immense potential for biomarker discovery and mechanistic insights by identifying metabolomic signatures (e.g., branched-chain amino acids, acylcarnitines, lysophosphatidylcholines) associated with disease progression. Herein, we discuss the various metabolomics approaches and the challenges involved in metabolic profiling, focusing on ACS. Special attention has been paid to the clinical studies of metabolomics and lipidomics in ACS, with an emphasis on ischemia/reperfusion injury.
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Affiliation(s)
- Arun Surendran
- Cardiovascular Lipidomics Laboratory, St. Boniface Hospital, Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada; (A.S.); (N.A.); (H.Z.)
- Mass Spectrometry and Proteomics Core Facility, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram 695014, Kerala, India
- Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
| | - Negar Atefi
- Cardiovascular Lipidomics Laboratory, St. Boniface Hospital, Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada; (A.S.); (N.A.); (H.Z.)
| | - Hannah Zhang
- Cardiovascular Lipidomics Laboratory, St. Boniface Hospital, Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada; (A.S.); (N.A.); (H.Z.)
| | - Michel Aliani
- Faculty of Agricultural and Food Sciences, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R2H 2A6, Canada;
| | - Amir Ravandi
- Cardiovascular Lipidomics Laboratory, St. Boniface Hospital, Albrechtsen Research Centre, Winnipeg, MB R2H 2A6, Canada; (A.S.); (N.A.); (H.Z.)
- Department of Physiology and Pathophysiology, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
- Section of Cardiology, Department of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R2H 2A6, Canada
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Xu N, Yuan B, Hu C, Yu Y, Fu N, Zhang J, Xie S, Yuan L. Homochiral Metal–Organic Framework [Ni(S-mal)(bpy)]n Used for the Separation of Racemic Compounds by High Performance Liquid Chromatography. JOURNAL OF ANALYTICAL CHEMISTRY 2021. [DOI: 10.1134/s1061934821060149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhao G, Liu Y, Du J, Zhang H, Feng H, Lu X. Application of tetrahedral -deoxyribonucleic acid electrochemistry platform coupling aptazymes and hybridized hairpin reactions for the measurement of extracellular adenosine triphosphate in plants. Anal Chim Acta 2021; 1172:338681. [PMID: 34119022 DOI: 10.1016/j.aca.2021.338681] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 05/18/2021] [Accepted: 05/21/2021] [Indexed: 11/29/2022]
Abstract
Extracellular ATP (eATP) is an important biological signal transduction molecule. Although a variety of detection methods have been extensively used in ATP sensing and analysis, accurate detection of eATP remains difficult due to its extremely low concentration and spatiotemporal distribution. Here, an eATP measurement strategy based on tetrahedral DNA (T-DNA)-modified electrode sensing platform and hybridization chain reaction (HCR) combined with G-quadruplex/Hemin (G4/Hemin) DNAzyme dual signal amplification is proposed. In this strategy, ATP aptamer and RNA-cleaving DNAzyme were combined to form a split aptazyme. In the presence of ATP, this aptazyme hydrolyzes the cleaving substrate strand with high selectivity, releasing cleaved ssDNA, which are captured by the T-DNA assembled on the electrode surface, triggering an HCR on the electrode surface to form numerous linker sequences of the HCR dsDNA product. When G-quadruplex@AuNPs (G4) spherical nucleic acid enzymes (SNAzymes) with other linkers are used as nanocatalyst tags, they are captured by HCR dsDNA through sticky linkers present on the electrode surface. An amplified electrochemical redox current signal is generated through SNAzyme-mediated catalysis of H2O2, enabling easy detection of picomole amounts of ATP. Using this strategy, eATP levels released by tobacco suspension cells were accurately measured and the distribution and concentration of eATP released on the surface of an Arabidopsis leaf was determined.
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Affiliation(s)
- Guoyan Zhao
- College of Life Science, Northwest Normal University, Lanzhou, 730070, Gansu, China
| | - Yongmei Liu
- College of Life Science, Northwest Normal University, Lanzhou, 730070, Gansu, China
| | - Jie Du
- College of Life Science, Northwest Normal University, Lanzhou, 730070, Gansu, China; Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, Northwest Normal University, Lanzhou, 730070, Gansu, China.
| | - Huizi Zhang
- College of Life Science, Northwest Normal University, Lanzhou, 730070, Gansu, China
| | - Hanqing Feng
- College of Life Science, Northwest Normal University, Lanzhou, 730070, Gansu, China.
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, Northwest Normal University, Lanzhou, 730070, Gansu, China.
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Serial Hydrolysis for the Simultaneous Analysis of Catecholamines and Steroids in the Urine of Patients with Alopecia Areata. Molecules 2021; 26:molecules26092734. [PMID: 34066554 PMCID: PMC8125454 DOI: 10.3390/molecules26092734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 05/03/2021] [Accepted: 05/04/2021] [Indexed: 11/17/2022] Open
Abstract
Catecholamines and steroids are well-known neurotransmitters and hormones that rapidly change the excitability of neurons. Alopecia areata is a disease for which the exact cause is unknown, but it is considered to be associated with stress, and so the simultaneous analysis of catecholamines and steroids is required for the diagnosis of alopecia areata. Thus, we herein report the simultaneous analysis of catecholamines and steroids bearing different functional groups for the first time, during which it was necessary to carry out a serial hydrolysis procedure. Following hydrolysis of the urine samples to produce the free forms from the urinary conjugates, ethyl acetate extractions were carried out, and chemical derivatization was performed using dansyl chloride to increase the sensitivity of the liquid chromatography-tandem mass spectrometry method. The matrix effects and recoveries of this analytical method were validated, giving values of 85.4-122.9% and 88.8-123.0%, respectively. In addition, the method accuracy and precision were assessed, giving values of 0.4-21.5% and 2.0-21.6% for the intra-day and inter-day precisions, respectively. This validated method was then applied to identify differences between patients with and without alopecia areata, wherein the metanephrine content was found to be significantly higher in the alopecia areata patient group. This quantitative profiling method can also be applied to steroid-dependent diseases, as well as catecholamine-related diseases.
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He X, Cao H, Li X, Li Y, Yu Y. MG@PD@TiO 2 nanocomposite based magnetic solid phase extraction coupled with LC-MS/MS for determination of lysophosphatidylcholines biomarkers of plasma in psoriasis patients. J Pharm Biomed Anal 2021; 201:114101. [PMID: 33984829 DOI: 10.1016/j.jpba.2021.114101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 03/18/2021] [Accepted: 04/22/2021] [Indexed: 12/14/2022]
Abstract
Lysophosphatidylcholine (LPC) was commonly known as a class of significant differential metabolites of high relevance with many diseases including psoriasis, of which the accurate determination is of great importance to diagnosis or prediction to many diseases. However, it is challenging and complicated because of the enormous biological sample complexity and impurities interference. In this study, we synthesized a magnetic nanocomposite MG@PD@TiO2 and took advantage of the interactions of Lewis acid-base between the phosphate groups in LPCs and Ti ions on MG@PD@TiO2 nanomaterials for selective separation and enrichment of LPCs from complex biological matrix. The solid-phase extraction sample pretreatment process by means of MG@PD@TiO2 nanomaterials coupled with LC-MS/MS method was then applied to actual determination of six typical LPCs (LPC 10:0, 14:0, 16:0, 18:0, 18:1, 22:0) in human plasma. The extraction conditions were scientifically optimized by single-factor test (adsorbent amount, adsorption and desorption time, elution solvent type, eluant volume). Under the optimal conditions, the detection limits (LOD, S/N = 3) and quantification limits (LOQ, S/N = 10) were 1 and 5 ng/mL for LPC 10:0 and LPC 14:0, 0.02 and 0.1 ng/mL for LPC 16:0 and LPC 18:1, 0.05 and 0.2 ng/mL LPC 18:0 and LPC 22:0, respectively. The intra- and inter-day precisions were 3.82-12.60 % (n = 6) and 3.29-13.50 % (n = 6) respectively, the recoveries were in the range of 91.92-113.69 % and the stability of the analytes in the matrix performed well with RSDs≤15.51 %. Finally, the developed method was successfully applied to the accurate determination of six LPCs biomarkers of plasma in patients with psoriasis (n = 10) and control groups (n = 10).
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Affiliation(s)
- Xinying He
- Pharmaceutical Analysis Department, School of Pharmacy, Fudan University, Shanghai 201203, Pudong, China
| | - Han Cao
- Pharmaceutical Analysis Department, School of Pharmacy, Fudan University, Shanghai 201203, Pudong, China
| | - Xia Li
- Department of Dermatology, Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai 200025, Pudong, China
| | - Yan Li
- Pharmaceutical Analysis Department, School of Pharmacy, Fudan University, Shanghai 201203, Pudong, China; Center for Medical Research and Innovation, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, 2800 Gongwei Road, Pudong, Shanghai 201399, China.
| | - Yunqiu Yu
- Pharmaceutical Analysis Department, School of Pharmacy, Fudan University, Shanghai 201203, Pudong, China.
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Habib H, Finno CJ, Gennity I, Favro G, Hales E, Puschner B, Moeller BC. Simultaneous quantification of vitamin E and vitamin E metabolites in equine plasma and serum using LC-MS/MS. J Vet Diagn Invest 2021; 33:506-515. [PMID: 33847203 DOI: 10.1177/10406387211005433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Vitamin E deficiencies can impact normal growth and development in humans and animals, and assessment of circulating levels of vitamin E and its metabolites may be an important endpoint for evaluation. Development of a sensitive method to detect and quantify low concentrations of vitamin E and metabolites in biological specimens allows for a proper diagnosis for patients and animals that are deficient. We developed a method to simultaneously extract, detect, and quantify the vitamin E compounds alpha-tocopherol (α-TP), gamma-tocopherol (γ-TP), alpha-tocotrienol (α-TT), and gamma-tocotrienol (γ-TT), and the corresponding metabolites formed after β-oxidation of α-TP and γ-TP, alpha-carboxymethylbutyl hydroxychroman (α-CMBHC) and alpha- or gamma-carboxyethyl hydroxychroman (α- or γ-CEHC), respectively, from equine plasma and serum. Quantification was achieved through liquid chromatography-tandem mass spectrometry. We applied a 96-well high-throughput format using a Phenomenex Phree plate to analyze plasma and serum. Compounds were separated by using a Waters ACQUITY UPLC BEH C18 column with a reverse-phase gradient. The limits of detection for the metabolites and vitamin E compounds were 8-330 pg/mL. To validate the method, intra-day and inter-day accuracy and precision were evaluated along with limits of detection and quantification. The method was then applied to determine concentrations of these analytes in plasma and serum of horses. Alpha-TP levels were 3-6 µg/mL of matrix; the metabolites were found at much lower levels, 0.2-1.0 ng/mL of matrix.
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Affiliation(s)
- Hadi Habib
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA
| | - Carrie J Finno
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA
| | - Ingrid Gennity
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA
| | - Gianna Favro
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA
| | - Erin Hales
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California, Davis, CA
| | - Birgit Puschner
- Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA
| | - Benjamin C Moeller
- K. L. Maddy Equine Analytical Chemistry Laboratory, California Animal Health and Food Safety Laboratory, School of Veterinary Medicine, University of California, Davis, CA
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Agrawal K, Voggu RR, Pisek D, Becht S, Chudnovskiy R, Dufour GM, Arfvidsson C, Thomas CE. A validated surrogate analyte LC-MS/MS assay for quantification of endogenous cortisol in human whole blood. J Pharm Biomed Anal 2021; 198:114028. [PMID: 33756381 DOI: 10.1016/j.jpba.2021.114028] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 03/10/2021] [Accepted: 03/12/2021] [Indexed: 11/17/2022]
Abstract
Cortisol is a steroid hormone that is frequently measured as a marker of stress, inflammation, and immune function. While commonly analyzed in saliva, hair, blood plasma and urine, a recent trend towards whole blood-based at-home collection devices has emerged, which necessitates development of more sensitive assays for cortisol in whole blood. To support the implementation of a patient-centric sampling approach in a drug development program, a fit-for-purpose surrogate analyte-based liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay for cortisol in whole blood was developed using 13C3-cortisol as a surrogate analyte and cortisol-d6 as the internal standard. The surrogate analyte approach was chosen due to a lack of available cortisol-free whole blood and the absence of appropriately representative surrogate matrices. Samples were prepared using supported liquid extraction, and the LC-MS/MS analysis consisted of a 4.00 min analytical run. The method demonstrated linearity between 0.500 and 500 ng/mL of 13C3-cortisol, and accuracy, precision and robustness were all acceptable per current regulatory guidance for bioanalytical method validation of chromatographic assays for cortisol- and 13C3-cortisol-based quality control (QC) samples when quantified against a 13C3-cortisol calibration curve. The acceptable robustness of cortisol-based QCs when quantified against a 13C3-cortisol-based calibration curve also suggests parallelism between the analytes. These results indicate a viable surrogate analyte method, that is fit-for-purpose to analyze whole blood cortisol levels using a surrogate analyte LC-MS/MS approach. Evaluation of patient samples showed very promising comparability between whole blood and plasma cortisol concentrations, suggesting that whole blood could be used in place of or in addition to a plasma-based sampling protocol in clinical trials analyzing cortisol. Overall, this method presents a novel tool that is a first step in supporting the trend towards sample miniaturization and at-home sample collection, and may be readily used in clinical and diagnostic settings.
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Affiliation(s)
- Karan Agrawal
- Covance Laboratories, Inc., 8211 SciCor Drive, Indianapolis, IN, 46214, USA.
| | - Ramakrishna R Voggu
- Covance Laboratories, Inc., 8211 SciCor Drive, Indianapolis, IN, 46214, USA.
| | - Daniel Pisek
- Covance Laboratories, Inc., 8211 SciCor Drive, Indianapolis, IN, 46214, USA.
| | - Steven Becht
- Covance Laboratories, Inc., 3301 Kinsman Blvd, Madison, WI, 53704, USA.
| | - Ross Chudnovskiy
- Covance Laboratories, Inc., 8211 SciCor Drive, Indianapolis, IN, 46214, USA.
| | | | - Cecilia Arfvidsson
- Clinical Pharmacology and Safety Sciences, Quantitative Pharmacology Clinical Pharmacology, AstraZeneca R&D, Gothenburg, Sweden.
| | - C Eric Thomas
- Covance Laboratories, Inc., 8211 SciCor Drive, Indianapolis, IN, 46214, USA.
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Virgiliou C, Theodoridis G, Wilson ID, Gika HG. Quantification of endogenous aminoacids and aminoacid derivatives in urine by hydrophilic interaction liquid chromatography tandem mass spectrometry. J Chromatogr A 2021; 1642:462005. [PMID: 33657487 DOI: 10.1016/j.chroma.2021.462005] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 01/14/2021] [Accepted: 02/15/2021] [Indexed: 11/17/2022]
Abstract
Aminoacids and their derivatives are key biologically important metabolites and reliable, rapid and accurate, quantification for these analytes in urine remains an important analytical challenge. Here a fast and reliable HILIC-tandem MS method is presented for application in clinical or nutritional studies. The developed method was validated according to existing guidelines adapted for endogenous analytes. The validation strategy provided evidence of linearity, LOD and LOQ, accuracy, precision, matrix effect and recovery. The surrogate matrix approach was applied for calibration proving satisfactory accuracy and precision based on standard criteria over the working concentration ranges. Intra and inter day accuracy was found to range between 0.8 and 20% for the LQC (low QC) and between 0.05 and 15 % for MQC (medium QC) and HQC (high QC). Inter and intraday precision were found to be between 3 and 20 % for the LQC and between 1 and 15% for the MQC and HQC. The stability of the analytes, in both surrogate and pooled urine QC samples, was found to be within 15% over a short period at 4 °C or after a up to 3 freeze-thaw cycles. The uncertainty of the method was also assessed to provide increased confidence for the acquired measurements. The method was successfully applied to a subset of human urine samples involved in a study of amino acids dietary uptake. This method may provide a valuable tool for many applications or studies where amino acid metabolic signatures in the excreted urine are under investigation.
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Affiliation(s)
- Christina Virgiliou
- Department of Chemistry, Aristotle University of Thessaloniki, 54124, Greece; Biomic_Auth, Bioanalysis and Omics Lab, CIRI - AUTH, Center for Interdisciplinary Research and Innovation, Thermi, 57001, Greece
| | - Georgios Theodoridis
- Department of Chemistry, Aristotle University of Thessaloniki, 54124, Greece; Biomic_Auth, Bioanalysis and Omics Lab, CIRI - AUTH, Center for Interdisciplinary Research and Innovation, Thermi, 57001, Greece
| | - Ian D Wilson
- Division of Systems Medicine, Department of Metabolism Department of Metabolism, Digestion and Reproduction, Imperial College London, South Kensigton, London SW7 2AZ, UK
| | - Helen G Gika
- Biomic_Auth, Bioanalysis and Omics Lab, CIRI - AUTH, Center for Interdisciplinary Research and Innovation, Thermi, 57001, Greece; School of Medicine, Aristotle University of Thessaloniki, 54124, Greece.
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40
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Yang P, Li X, Yang W, He L, Yang L, Zhang X. A simple liquid chromatography/differential ion mobility spectrometry tandem mass spectrometry method for the determination of trimethylamine-N-oxide in human serum: An application in dialysis patients. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2021; 35:e8965. [PMID: 33002250 DOI: 10.1002/rcm.8965] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 09/29/2020] [Accepted: 09/30/2020] [Indexed: 06/11/2023]
Abstract
RATIONALE Trimethylamine-N-oxide (TMAO) is a potential indicator of cardiovascular disease and chronic kidney disorders. It is important to monitor the TMAO level in plasma or serum of hemodialysis patients. A simple liquid chromatography/differential ion mobility spectrometry tandem mass spectrometry (HPLC/DMS-MS/MS) method was established and validated for the determination of TMAO in the serum of hemodialysis patients. METHODS Chromatographic separation was performed on a Waters Atlantis HILIC silica column (2.1 × 50 mm, 3 μm). The gradient mobile phase consisted of 10 mM ammonium formate buffer and acetonitrile with 0.1% formic acid in both solvents. The serum sample was precipitated with acidic acetonitrile prior to HPLC/DMS-MS/MS analysis and TMAO-d9 was used as the internal standard. Data acquisition was performed in positive ion mode with a DMS system before the electrospray ionization source. The selected reaction monitoring transitions were m/z 76.0 → 58.0 and m/z 85.2 → 66.1 for TMAO and the internal standard, respectively. RESULTS Excellent linearity was observed over the calibration range 0.05-20 μg/mL (r2 > 0.995). The method was validated for good specificity and sensitivity. The inter-run and intra-run precision and accuracy were less than 13.6% and 10.7%, respectively. CONCLUSIONS We established a novel and robust HPLC/DMS-MS/MS method for the quantification of TMAO in human serum samples. The validated assay was simple, rapid, sensitive and reliable. The developed method could be applied to the assay of serum samples from patients with kidney disease who are undergoing hemodialysis.
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Affiliation(s)
- Ping Yang
- Department of Pharmacy, Peking University Third Hospital, Beijing, 100191, China
| | - Xiaona Li
- Department of Pharmacy, Peking University Third Hospital, Beijing, 100191, China
| | - Wenling Yang
- Department of Nephrology, Peking University Third Hospital, Beijing, 100191, China
| | - Lian He
- Department of Nephrology, Peking University Third Hospital, Beijing, 100191, China
| | - Li Yang
- Department of Pharmacy, Peking University Third Hospital, Beijing, 100191, China
| | - Xianhua Zhang
- Department of Pharmacy, Peking University Third Hospital, Beijing, 100191, China
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Absolute quantitative analysis of endogenous neurotransmitters and amino acids by liquid chromatography-tandem mass spectrometry combined with multidimensional adsorption and collision energy defect. J Chromatogr A 2021; 1638:461867. [PMID: 33485029 DOI: 10.1016/j.chroma.2020.461867] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/25/2020] [Accepted: 12/28/2020] [Indexed: 01/06/2023]
Abstract
Considering that neurotransmitters (NTs) and amino acids (AAs) exert pivotal roles in various neurological diseases, global detection of these endogenous metabolites is of great significance for the treatment of nervous system diseases. Herein, a workflow that could cope with various challenges was proposed to establish an extendable all-in-one injection liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay for analyzing these small molecular metabolites with high coverage. To obtain a qualified blank biological matrix for the preparation of standard curves and quality control samples, different absorption solvents, including activated carbon (AC), calcite (Cal) and montmorillonite (Mnt) were systematically evaluated for efficient absorption of endogenous substances with minimum residue. We also firstly proposed a "Collision Energy Defect (CED)" strategy to solve the huge difference of mass signal strength caused by different properties and concentrations of 11 NTs and 17 AAs. The quantitative results were validated by LC-MS/MS. Sensitivity, accuracy, and recovery meeting generally accepted bioanalytic guidelines were observed in a concentration span of at least 100 to 500 times for each analyte. Then the temporal changes of intracerebral and peripheral NTs and AAs in ischemic stroke model and sham operated rats were successfully produced and compared using the described method. All these results suggested that the currently developed assay was powerful enough to simultaneously monitor a large panel of endogenous small molecule metabolites, which was expected to be widely used in the research of various diseases mediated by NTs and AAs.
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Khamis MM, Adamko DJ, El-Aneed A. STRATEGIES AND CHALLENGES IN METHOD DEVELOPMENT AND VALIDATION FOR THE ABSOLUTE QUANTIFICATION OF ENDOGENOUS BIOMARKER METABOLITES USING LIQUID CHROMATOGRAPHY-TANDEM MASS SPECTROMETRY. MASS SPECTROMETRY REVIEWS 2021; 40:31-52. [PMID: 31617245 DOI: 10.1002/mas.21607] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 09/08/2019] [Indexed: 06/10/2023]
Abstract
Metabolomics is a dynamically evolving field, with a major application in identifying biomarkers for drug development and personalized medicine. Numerous metabolomic studies have identified endogenous metabolites that, in principle, are eligible for translation to clinical practice. However, few metabolomic-derived biomarker candidates have been qualified by regulatory bodies for clinical applications. Such interruption in the biomarker qualification process can be largely attributed to various reasons including inappropriate study design and inadequate data to support the clinical utility of the biomarkers. In addition, the lack of robust assays for the routine quantification of candidate biomarkers has been suggested as a potential bottleneck in the biomarker qualification process. In fact, the nature of the endogenous metabolites precludes the application of the current validation guidelines for bioanalytical methods. As a result, there have been individual efforts in modifying existing guidelines and/or developing alternative approaches to facilitate method validation. In this review, three main challenges for method development and validation for endogenous metabolites are discussed, namely matrix effects evaluation, alternative analyte-free matrices, and the choice of internal standards (ISs). Some studies have modified the equations described by the European Medicines Agency for the evaluation of matrix effects. However, alternative strategies were also described; for instance, calibration curves can be generated in solvents and in biological samples and the slopes can be compared through ratios, relative standard deviation, or a modified Stufour suggested approaches while quantifying mainly endogenous metabolitesdent t-test. ISs, on the contrary, are diverse; in which seven different possible types, used in metabolomics-based studies, were identified in the literature. Each type has its advantages and limitations; however, isotope-labeled ISs and ISs created through isotope derivatization show superior performance. Finally, alternative matrices have been described and tested during method development and validation for the quantification of endogenous entities. These alternatives are discussed in detail, highlighting their advantages and shortcomings. The goal of this review is to compare, apprise, and debate current knowledge and practices in order to aid researchers and clinical scientists in developing robust assays needed during the qualification process of candidate metabolite biomarkers. © 2019 John Wiley & Sons Ltd. Mass Spec Rev.
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Affiliation(s)
- Mona M Khamis
- College of Pharmacy and Nutrition, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, Saskatchewan, S7N 5E5, Canada
| | - Darryl J Adamko
- Department of Pediatrics, College of Medicine, University of Saskatchewan, 103 Hospital Drive, Saskatoon, Saskatchewan, Canada
| | - Anas El-Aneed
- College of Pharmacy and Nutrition, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, Saskatchewan, S7N 5E5, Canada
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Simultaneous determination of five amino acid neurotransmitters in rat and porcine blood and brain by two-dimensional liquid chromatography. J Chromatogr B Analyt Technol Biomed Life Sci 2020; 1163:122507. [PMID: 33387860 DOI: 10.1016/j.jchromb.2020.122507] [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: 10/05/2020] [Revised: 12/01/2020] [Accepted: 12/14/2020] [Indexed: 11/23/2022]
Abstract
A method for the simultaneous determination of aspartic acid (Asp), glutamic acid (Glu), glycine (Gly), taurine (Tau) and gamma-aminobutyric acid (GABA) in animal blood and brain by two-dimensional liquid chromatography (2D-LC) combined with ultraviolet detection was established for the first time. First, the amino acid neurotransmitters (AANTs) were labeled on the corresponding fluorescent derivatives with 4-fluoro-7-nitrobenzofurazan (NBD-F), enriched on the extraction column and automatically transferred to the analytical column to achieve on-line extraction and complete separation of the target components. This method exhibited good selectivity, and the correlation coefficients for the analyte calibration curves of were > 0.99. The intra- and inter-day precisions were ≤ 16.03, and the accuracies were in the range of 70.59-116.20%. The system realizes the rapid detection and stability quantification of the five AANTs, which proves that the alternative dilution method is feasible. The results show that the system has high loading capacity, excellent resolution, and good peak shape and is not affected by other endogenous substances. Moreover, the developed method has been successfully applied to the analysis of biological samples in the blood and whole brain of rats and pigs. The content of AANTs in the hippocampus and cortex of rats was higher than that in those of pigs. This method is expected to provide applicability for the determination of AANTs in pharmacological, pharmaceutical and clinical research in nervous science.
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Fernández-del-Campo-García MT, Casas-Ferreira AM, Rodríguez-Gonzalo E, Moreno-Cordero B, Pérez-Pavón JL. Development of a fast and reliable methodology for the determination of polyamines in urine by using a guard column as a low-resolution fractioning step prior to mass spectrometry. Comparison with flow injection-mass spectrometry analysis. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105223] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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45
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Verstraete J, Boffel L, Stove C. Dried blood microsample-assisted determination of vitamins: Recent developments and challenges. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2020.116057] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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46
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Pia Dima A, De Santis L, Verlengia C, Lombardo F, Lenzi A, Mazzarino M, Botrè F, Paoli D. Development and validation of a liquid chromatography-tandem mass spectrometry method for the simultaneous determination of phthalates and bisphenol a in serum, urine and follicular fluid. CLINICAL MASS SPECTROMETRY (DEL MAR, CALIF.) 2020; 18:54-65. [PMID: 34820526 PMCID: PMC8601017 DOI: 10.1016/j.clinms.2020.10.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 09/29/2020] [Accepted: 10/23/2020] [Indexed: 11/22/2022]
Abstract
Phthalates and bisphenol A interfere with the synthesis, secretion, transport, binding, metabolism, and excretion of endogenous hormones and, for this reason, are classified as endocrine disruptors. We are here presenting an analytical method for the simultaneous detection of six phthalates metabolites and bisphenol A in different biological fluids (urine, serum and follifular fluid) by liquid chromatography coupled to tandem mass spectrometry. The quantification was carried out in negative electrospray ionization mode using selected reaction monitoring as acquisition mode. Different extraction protocols, using either solid phase or liquid/liquid extraction, were comparatively evaluated to optimize the sample preparation procedure. Solid-phase extraction was chosen as it ensured the best recovery and overall sensitivity. The method was successfully validated: recovery varying in the range 71 ± 2%-107 ± 6% depending on the target analyte and the matrix considered, intra-assay and inter-assay precision ≤ 12% for follicular fluid, ≤11% for serum and ≤ 10% for urine and accuracy ≤ 115% for follicular fluid, ≤113% for serum ≤ 115% for urine , linearity with R2 > 0.99, with the exception of MEP (recovery 64 ± 8%, intra-assay precision ≤ 20%, inter-assay precision ≤ 16% for follicular fluid). The actual applicability of the method developed and validated in this study was assessed by the analysis of real samples, including 10 specimens of follicular fluid, serum and urine samples, that showed the presence of phthalates metabolites and Bisphenol A, and confirming that the newly developed method can be applied in the routine clinical laboratory for the identification and quantitation of these endocrine-disrupting chemicals.
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Affiliation(s)
- Anna Pia Dima
- Laboratory of Seminology – Sperm Bank “Loredana Gandini”, Department of Experimental Medicine, “Sapienza” University of Rome, Italy
| | - Lucia De Santis
- IVF Unit, San Raffaele Scientific Institute, Vita-Salute University, Milan, Italy
| | | | - Francesco Lombardo
- Laboratory of Seminology – Sperm Bank “Loredana Gandini”, Department of Experimental Medicine, “Sapienza” University of Rome, Italy
| | - Andrea Lenzi
- Laboratory of Seminology – Sperm Bank “Loredana Gandini”, Department of Experimental Medicine, “Sapienza” University of Rome, Italy
| | - Monica Mazzarino
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Giulio Onesti 1, 00197 Rome, Italy
| | - Francesco Botrè
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Giulio Onesti 1, 00197 Rome, Italy
- Department of Experimental Medicine, “Sapienza” University of Rome, Italy
- REDS – Research and Expertise on AntiDoping Science, ISSUL – Institute des Sciences du Sport, Université de Lausanne, Synathlon – Quartier Centre, 1015 Lausanne, Switzerland
| | - Donatella Paoli
- Laboratory of Seminology – Sperm Bank “Loredana Gandini”, Department of Experimental Medicine, “Sapienza” University of Rome, Italy
| | - on behalf of the Italian Society of Embryology, Reproduction, Research (SIERR)
- Laboratory of Seminology – Sperm Bank “Loredana Gandini”, Department of Experimental Medicine, “Sapienza” University of Rome, Italy
- IVF Unit, San Raffaele Scientific Institute, Vita-Salute University, Milan, Italy
- UOSD Centro PMA Sant’ Anna – ASL, Roma 1. Rome, Italy
- Laboratorio Antidoping, Federazione Medico Sportiva Italiana, Largo Giulio Onesti 1, 00197 Rome, Italy
- Department of Experimental Medicine, “Sapienza” University of Rome, Italy
- REDS – Research and Expertise on AntiDoping Science, ISSUL – Institute des Sciences du Sport, Université de Lausanne, Synathlon – Quartier Centre, 1015 Lausanne, Switzerland
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Filling Gaps on Stability Data: Development, Validation and Application of a Multianalyte UHPLC-DAD Method to Determine the Stability of Commonly Administered Drugs in Different Carrier Solutions Used in Palliative Care. ANALYTICA 2020. [DOI: 10.3390/analytica1010005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In palliative care, continuous subcutaneous infusion (CSCI) is common practice for drug administration when oral application of drugs is not feasible or not reliable anymore. However, use of CSCI is limited to chemical stability of drugs and their combination in carrier solution. To determine the stability of different mixtures of commonly used drugs in palliative care, a multi-analyte UHPLC-DAD method controlled by an internal standard was successfully developed. The method was validated in terms of specificity, accuracy, precision, and linearity across the calibration range. Seven analytes could be separated within 10 min by C18-reversed phase chromatography. The method was successfully applied to close gaps in stability data and complete missing data for decision makers in health care units. Our results indicated the stability of binary mixtures and one ternary mixture in 0.9% saline and 5% glucose as carrier solutions. The obtained data will support pharmacists in palliative care for the preparation of parenteral drug solutions in the future.
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48
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Meng X, Bai H, Ma Q, Zhang P, Ma H, Deng Y. Broad targeted analysis of neurochemicals in rat serum using liquid chromatography tandem mass spectrometry with chemical derivatization. J Sep Sci 2020; 43:4006-4017. [PMID: 32866349 DOI: 10.1002/jssc.202000709] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 08/17/2020] [Accepted: 08/24/2020] [Indexed: 01/12/2023]
Abstract
In this study, an efficient and sensitive assay for the detection of 42 polar neurochemicals, including neurotransmitters, amino acids, and biogenic amines, was established by combining reversed-phase liquid chromatography tandem mass spectrometry with chemical derivatization. An optimally designed benzoyl chloride derivatization was easily conducted in a one-pot reaction and stable neurochemical derivatives were obtained under mild conditions within 5 min (except for acetylcholine and melatonin). Derivatization also enabled the introduction of heavy labeling of the analytes through the use of labeled derivatization agents. Chromatography separation was performed on an HSS T3 column within 15 min by gradient elution. Multiple reaction monitoring acquisition mode enabled quantitation of neurochemicals with limits of detection of 0.05 to 11.63 nM and lower limits of quantitation of 0.09 to 46.50 nM in rat serum. The assay was well validated in terms of linearity and extraction recovery. Furthermore, the instrumental precision, specificity, matrix effect, accuracy, precision, stability, dilution effect, and carry-over effect were also validated. Finally, the overall efficacy of the assay was experimentally tested using serum from six Sprague-Dawley rats. The results demonstrated that the developed method is effective for broad targeted analysis of 42 neurochemicals in serum.
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Affiliation(s)
- Xianshuang Meng
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, P. R. China.,Chinese Academy of Inspection and Quarantine, Beijing, 100176, P. R. China
| | - Hua Bai
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, P. R. China
| | - Qiang Ma
- Chinese Academy of Inspection and Quarantine, Beijing, 100176, P. R. China
| | - Peng Zhang
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Hong Ma
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Yulin Deng
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, P. R. China
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Casati S, Giannasi C, Minoli M, Niada S, Ravelli A, Angeli I, Mergenthaler V, Ottria R, Ciuffreda P, Orioli M, Brini AT. Quantitative Lipidomic Analysis of Osteosarcoma Cell-Derived Products by UHPLC-MS/MS. Biomolecules 2020; 10:E1302. [PMID: 32917006 PMCID: PMC7563490 DOI: 10.3390/biom10091302] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 09/04/2020] [Accepted: 09/06/2020] [Indexed: 02/06/2023] Open
Abstract
Changes in lipid metabolism are involved in several pathological conditions, such as cancer. Among lipids, eicosanoids are potent inflammatory mediators, synthesized from polyunsaturated fatty acids (PUFAs), which coexist with other lipid-derived ones, including endocannabinoids (ECs) and N-acylethanolamides (NAEs). In this work, a bioanalytical assay for 12 PUFAs/eicosanoids and 20 ECs/NAEs in cell culture medium and human biofluids was validated over a linear range of 0.1-2.5 ng/mL. A fast pretreatment method consisting of protein precipitation with acetonitrile followed by a double step liquid-liquid extraction was developed. The final extracts were injected onto a Kinetex ultra-high-performance liquid chromatography (UHPLC) XB-C18 column with a gradient elution of 0.1% formic acid in water and methanol/acetonitrile (5:1; v/v) mobile phase. Chromatographic separation was followed by detection with a triple-quadrupole mass spectrometer operating both in positive and negative ion-mode. A full validation was carried out in a small amount of cell culture medium and then applied to osteosarcoma cell-derived products. To the best of our knowledge, this is the first lipid profiling of bone tumor cell lines (SaOS-2 and MG-63) and their secretome. Our method was also partially validated in other biological matrices, such as serum and urine, ensuring its broad applicability as a powerful tool for lipidomic translational research.
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Affiliation(s)
- Sara Casati
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Università degli studi di Milano, 20133 Milan, Italy; (M.M.); (A.R.); (I.A.); (V.M.); (M.O.); (A.T.B.)
| | - Chiara Giannasi
- IRCCS Istituto Ortopedico Galeazzi, 20161 Milan, Italy; (C.G.); (S.N.)
| | - Mauro Minoli
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Università degli studi di Milano, 20133 Milan, Italy; (M.M.); (A.R.); (I.A.); (V.M.); (M.O.); (A.T.B.)
| | - Stefania Niada
- IRCCS Istituto Ortopedico Galeazzi, 20161 Milan, Italy; (C.G.); (S.N.)
| | - Alessandro Ravelli
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Università degli studi di Milano, 20133 Milan, Italy; (M.M.); (A.R.); (I.A.); (V.M.); (M.O.); (A.T.B.)
| | - Ilaria Angeli
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Università degli studi di Milano, 20133 Milan, Italy; (M.M.); (A.R.); (I.A.); (V.M.); (M.O.); (A.T.B.)
| | - Veronica Mergenthaler
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Università degli studi di Milano, 20133 Milan, Italy; (M.M.); (A.R.); (I.A.); (V.M.); (M.O.); (A.T.B.)
| | - Roberta Ottria
- Dipartimento di Scienze Biomediche e Cliniche “L.Sacco”, Università degli studi di Milano, 20157 Milan, Italy; (R.O.); (P.C.)
| | - Pierangela Ciuffreda
- Dipartimento di Scienze Biomediche e Cliniche “L.Sacco”, Università degli studi di Milano, 20157 Milan, Italy; (R.O.); (P.C.)
| | - Marica Orioli
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Università degli studi di Milano, 20133 Milan, Italy; (M.M.); (A.R.); (I.A.); (V.M.); (M.O.); (A.T.B.)
| | - Anna T. Brini
- Dipartimento di Scienze Biomediche, Chirurgiche ed Odontoiatriche, Università degli studi di Milano, 20133 Milan, Italy; (M.M.); (A.R.); (I.A.); (V.M.); (M.O.); (A.T.B.)
- Dipartimento di Scienze Biomediche e Cliniche “L.Sacco”, Università degli studi di Milano, 20157 Milan, Italy; (R.O.); (P.C.)
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50
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Polovkov N, Starkova J, Borisov R. A simple, inexpensive, non-enzymatic microwave-assisted method for determining bisphenol-A in urine in the form of trimethylsilyl derivative by GC/MS with single quadrupole. J Pharm Biomed Anal 2020; 188:113417. [DOI: 10.1016/j.jpba.2020.113417] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 05/29/2020] [Accepted: 06/06/2020] [Indexed: 01/01/2023]
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