1
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Wise SA, Kuszak AJ, Camara JE. Evolution and impact of Standard Reference Materials (SRMs) for determining vitamin D metabolites. Anal Bioanal Chem 2024; 416:2335-2358. [PMID: 38236394 DOI: 10.1007/s00216-024-05143-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/19/2024]
Abstract
The National Institute of Standards and Technology (NIST), in collaboration with the National Institutes of Health, Office of Dietary Supplements (NIH ODS), introduced the first Standard Reference Material® (SRM) for determining vitamin D metabolites in 2009 motivated by significant concerns about the comparability and accuracy of different assays to assess vitamin D status. After 14 years, a suite of five serum matrix SRMs and three calibration solution SRMs are available. Values were also assigned for vitamin D metabolites in five additional SRMs intended primarily to support measurements of other clinical diagnostic markers. Both the SRMs and the certification approach have evolved from significant exogenous serum content to primarily endogenous content and from value assignment by combining the results of multiple analytical methods to the use of measurements exclusively from reference measurement procedures (RMPs). The impact of the availability of these SRMs can be assessed by both the distribution information (sales) and by reports in the scientific literature describing their use for method validation, quality control, and research. In this review, we describe the development of these SRMs, the evolution in design and value assignment, the expansion of information reported, and SRM use in validating analytical methods and providing quality assurance within the vitamin D measurement community.
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Affiliation(s)
- Stephen A Wise
- Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20817, USA.
| | - Adam J Kuszak
- Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20817, USA
| | - Johanna E Camara
- Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
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2
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Spyksma EE, Alexandridou A, Mai K, Volmer DA, Stokes CS. An Overview of Different Vitamin D Compounds in the Setting of Adiposity. Nutrients 2024; 16:231. [PMID: 38257127 PMCID: PMC10820956 DOI: 10.3390/nu16020231] [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: 12/19/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/24/2024] Open
Abstract
A large body of research shows an association between higher body weight and low vitamin D status, as assessed using serum 25-hydroxyvitamin D concentrations. Vitamin D can be metabolised in adipose tissue and has been reported to influence gene expression and modulate inflammation and adipose tissue metabolism in vitro. However, the exact metabolism of vitamin D in adipose tissue is currently unknown. White adipose tissue expresses the vitamin D receptor and hydroxylase enzymes, substantially involved in vitamin D metabolism and efficacy. The distribution and concentrations of the generated vitamin D compounds in adipose tissue, however, are largely unknown. Closing this knowledge gap could help to understand whether the different vitamin D compounds have specific health effects in the setting of adiposity. This review summarises the current evidence for a role of vitamin D in adipose tissue and discusses options to accurately measure vitamin D compounds in adipose tissue using liquid chromatography tandem mass spectrometry (LC/MS-MS).
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Affiliation(s)
- Eva E. Spyksma
- Food and Health Research Group, Faculty of Life Sciences, Humboldt University Berlin, 14195 Berlin, Germany;
- Bioanalytical Chemistry, Department of Chemistry, Humboldt University Berlin, 12489 Berlin, Germany; (A.A.); (D.A.V.)
| | - Anastasia Alexandridou
- Bioanalytical Chemistry, Department of Chemistry, Humboldt University Berlin, 12489 Berlin, Germany; (A.A.); (D.A.V.)
| | - Knut Mai
- Department of Endocrinology & Metabolism, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany;
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, 10785 Berlin, Germany
- German Center for Diabetes Research, 90451 Nuremberg, Germany
- Department of Human Nutrition, German Institute of Human Nutrition, 14558 Nuthetal, Germany
| | - Dietrich A. Volmer
- Bioanalytical Chemistry, Department of Chemistry, Humboldt University Berlin, 12489 Berlin, Germany; (A.A.); (D.A.V.)
| | - Caroline S. Stokes
- Food and Health Research Group, Faculty of Life Sciences, Humboldt University Berlin, 14195 Berlin, Germany;
- Department of Molecular Toxicology, German Institute of Human Nutrition, 14558 Nuthetal, Germany
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3
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Wang X, Qin Q, Li F, Fu Y, Liu N. A novel LC-MS/MS method combined with derivatization for simultaneous quantification of vitamin D metabolites in human serum with diabetes as well as hyperlipidemia. RSC Adv 2023; 13:34157-34166. [PMID: 38020011 PMCID: PMC10663881 DOI: 10.1039/d3ra05700c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 11/06/2023] [Indexed: 12/01/2023] Open
Abstract
Vitamin D plays an important role in calcium homeostasis. Recent studies indicate that vitamin D deficiency has become a major public health problem. In order to define vitamin D status, many analytical methods were used to quantify 25-hydroxyvitamin D (25OHD), as circulating 25OHD is regarded as the best indicator to evaluate vitamin D status. The current LC-MS/MS technology is internationally recognized as the "gold standard" for the detection of vitamin D and its metabolites. The impediment to the analysis of vitamin D metabolites is the low level of 25OHD and 1,25(OH)2D. Therefore, it is challenging to achieve the desired sensitivity and accuracy in the determination of trace vitamin D compounds in biological liquids. Here, a method based on liquid-liquid extraction in combination with derivatization, followed by liquid chromatography-electrospray/tandem mass spectrometry was developed for determination of the vitamin D metabolites, including 25-hydroxyvitamin D2, 25-hydroxyvitamin D3, 1α,25-dihydroxyvitamin D2 and 1α,25-dihydroxyvitamin D3. The method was simple and rapid, and it was validated with good linearity (R2 > 0.998), excellent recovery (average value with 81.66-110.31%) and high precision of intra-day and inter-day (0.06-6.38% and 0.20-6.82%). The values of limit of detection (LOD) and limit of quantitation (LOQ) were as low as 0.3 ng mL-1 and 1.0 ng mL-1, respectively. Finally, the developed method was successfully applied to determination of the vitamin D metabolites from the human serum samples of healthy subjects and patients with diabetes as well as hyperlipidemia.
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Affiliation(s)
- Xiaodi Wang
- College of Medical Laboratory Science, Dalian Medical University Dalian Liaoning 116044 China
- Department of General Surgery, Linyi People's Hospital Linyi Shandong 276600 China
| | - Qian Qin
- College of Medical Laboratory Science, Dalian Medical University Dalian Liaoning 116044 China
| | - Fasheng Li
- College of Medical Laboratory Science, Dalian Medical University Dalian Liaoning 116044 China
| | - Ying Fu
- College of Medical Laboratory Science, Dalian Medical University Dalian Liaoning 116044 China
| | - Na Liu
- College of Medical Laboratory Science, Dalian Medical University Dalian Liaoning 116044 China
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4
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Yi K, Xie J, Qu Z, Lin Y, Huang Z, Peng T, Zhao Y, Zhai R, Gong X, Jiang Y, Dai X, Fang X. Quantification of 25OHD in serum by ID-LC-MS/MS based on oriented immobilization of antibody on magnetic materials. Mikrochim Acta 2023; 190:216. [PMID: 37173548 DOI: 10.1007/s00604-023-05749-4] [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: 11/28/2022] [Accepted: 03/14/2023] [Indexed: 05/15/2023]
Abstract
Magnetic nanomaterials are widely used, but co-adsorption of impurities will lead to saturation. In this study, the aim was to prepare a magnetic nano-immunosorbent material based on orienting immobilization that can purify and separate 25-hydroxyvitamin D (25OHD) from serum and provides a new concept of sample pretreatment technology. Streptococcus protein G (SPG) was modified on the surface of the chitosan magnetic material, and the antibody was oriented immobilized using the ability of SPG to specifically bind to the Fc region of the monoclonal antibody. The antigen-binding domain was fully exposed and made up for the deficiency of the antibody random immobilization. Compared with the antibody in the random binding format, this oriented immobilization strategy can increase the effective activity of the antibody, and the amount of antibody consumed is saved to a quarter of the former. The new method is simple, rapid, and sensitive, without consuming a lot of organic reagents, and can enrich 25OHD after simple protein precipitation. Combining with liquid chromatography-tandem mass spectrometry (LC-MS/MS), the analysis can be completed in less than 30 min. For 25OHD2 and 25OHD3, the LOD was 0.021 and 0.017 ng mL-1, respectively, and the LOQ was 0.070 and 0.058 ng mL-1, respectively. The results indicated that the magnetic nanomaterials based on oriented immobilization can be applied as an effective, sensitive, and attractive adsorbent to the enrichment of serum 25OHD.
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Affiliation(s)
- Keke Yi
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China
- Shenzhen Institute for Technology Innovation, National Institute of Metrology, Shenzhen, 518107, China
| | - Jie Xie
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China
| | - Ziyu Qu
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China
| | - Yanling Lin
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - Zejian Huang
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China
| | - Tao Peng
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China
| | - Yang Zhao
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China
| | - Rui Zhai
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China
| | - Xiaoyun Gong
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China
| | - You Jiang
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China.
| | - Xinhua Dai
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China.
| | - Xiang Fang
- Technology Innovation Center of Mass Spectrometry for State Market Regulation, |Center for Advanced Measurement Science, National Institute of Metrology, Beijing, 100029, China.
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5
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A Mathematical Model for Determining the Body's Fluctuating Need for and Synthesis of Active Vitamin D. Biomedicines 2023; 11:biomedicines11020324. [PMID: 36830861 PMCID: PMC9953299 DOI: 10.3390/biomedicines11020324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 01/03/2023] [Accepted: 01/09/2023] [Indexed: 01/27/2023] Open
Abstract
The process by which 1,25(OH)2D3 is synthesized and degraded and how it is transported out of the cell and body is described. The changing demand for the synthesis of 1-25(OH)2D3 during different conditions experienced by the body is reviewed. A method of determining 1,25(OH)2D3 synthesis and demand, and the percent utilization of 25(OH)D3 to make 1,25(OH)2D3 is presented based on the measurement of the end metabolites of 1,25(OH)2D3 and of its immediate precursor, 25(OH)D3. A mathematical model has been developed to allow the calculation of 1,25(OH)2 D synthesis, and demand, and the percent utilization of 25(OH)D3. Simple algebraic equations have been derived which allow the calculation of these new parameters using the concentrations of the end metabolites of 1,25(OH)2D3 and its immediate precursor, 25(OH)D3 in the serum and urine. Vitamin D plays an important role in combating invading bacteria and viruses and in subduing the body's associated inflammatory response. This new approach to evaluating vitamin D status may help clinicians determine 25(OH)D3 and 1,25(OH)2D3 levels needed to suppress bacterial infections, viral replication during new viral infections and the reactivation of latent viruses, and to downregulate the inflammatory responses caused by bacteria and viruses.
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6
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Stephenson AJ, Hunter B, Shaw PN, Kassim NSA, Trengove R, Takechi R, Lam V, Mamo J. A highly sensitive LC-MS/MS method for quantitative determination of 7 vitamin D metabolites in mouse brain tissue. Anal Bioanal Chem 2023; 415:1357-1369. [PMID: 36705732 PMCID: PMC9928823 DOI: 10.1007/s00216-023-04527-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 12/13/2022] [Accepted: 01/05/2023] [Indexed: 01/28/2023]
Abstract
Despite its critical role in neurodevelopment and brain function, vitamin D (vit-D) homeostasis, metabolism, and kinetics within the central nervous system remain largely undetermined. Thus, it is of critical importance to establish an accurate, highly sensitive, and reproducible method to quantitate vit-D in brain tissue. Here, we present a novel liquid chromatography tandem mass spectrometry (LC-MS/MS) method and for the first time, demonstrate detection of seven major vit-D metabolites in brain tissues of C57BL/6J wild-type mice, namely 1,25(OH)2D3, 3-epi-1,25(OH)2D3, 1,25(OH)2D2, 25(OH)D3, 25(OH)D2, 24,25(OH)2D3, and 24,25(OH)2D2. Chromatographic separation was achieved on a pentaflurophenyl column with 3 mM ammonium formate water/methanol [A] and 3 mM ammonium formate methanol/isopropanol [B] mobile phase components. Detection was by positive ion electrospray tandem mass spectrometry with the EVOQ elite triple quadrupole mass spectrometer with an Advance ultra-high-performance liquid chromatograph and online extraction system. Calibration standards of each metabolite prepared in brain matrices were used to validate the detection range, precision, accuracy, and recovery. Isotopically labelled analogues, 1,25(OH)2D3-d3, 25(OH)D3-c5, and 24,25(OH)2D3-d6, served as the internal standards for the closest molecular-related metabolite in all measurements. Standards between 1 fg/mL and 10 ng/mL were injected with a resulting linear range between 0.001 and 1 ng, with an LLOD and LLOQ of 1 pg/mL and 12.5 pg/mL, respectively. The intra-/inter-day precision and accuracy for measuring brain vit-D metabolites ranged between 0.12-11.53% and 0.28-9.11%, respectively. Recovery in acetonitrile ranged between 99.09 and 106.92% for all metabolites. Collectively, the sensitivity and efficiency of our method supersedes previously reported protocols used to measure vit-D and to our knowledge, the first protocol to reveal the abundance of 25(OH)D2, 1,25(OH)D2, and 24,25(OH)2D2, in brain tissue of any species. This technique may be important in supporting the future advancement of pre-clinical research into the function of vit-D in neurophysiological and neuropsychiatric disorders, and neurodegeneration.
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Affiliation(s)
- Andrea Joy Stephenson
- Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Perth, WA Australia
- Curtin Medical School, Faculty of Health Sciences, Curtin University, Perth, WA Australia
| | - Benjamin Hunter
- Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Perth, WA Australia
- Separation Science & Metabolomics Laboratory at Murdoch University, Perth, Australia
| | - Paul Nicholas Shaw
- School of Pharmacy, The University of Queensland, Woolloongabba, QLD Australia
| | - Nur Sofiah Abu Kassim
- School of Chemistry and Environment, Faculty of Applied Science, University Teknologi MARA, Negeri Sembilan, Cawangan Negeri Sembilan, Kampus Kuala Pilah, Kuala Pilah, Malaysia
| | - Robert Trengove
- Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Perth, WA Australia
- Separation Science & Metabolomics Laboratory at Murdoch University, Perth, Australia
| | - Ryu Takechi
- Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Perth, WA Australia
- School of Population Health, Faculty of Health Sciences, Curtin University, Perth, WA Australia
| | - Virginie Lam
- Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Perth, WA Australia
- School of Population Health, Faculty of Health Sciences, Curtin University, Perth, WA Australia
| | - John Mamo
- Curtin Health Innovation Research Institute, Faculty of Health Sciences, Curtin University, Perth, WA Australia
- School of Population Health, Faculty of Health Sciences, Curtin University, Perth, WA Australia
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7
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Janoušek J, Pilařová V, Macáková K, Nomura A, Veiga-Matos J, Silva DDD, Remião F, Saso L, Malá-Ládová K, Malý J, Nováková L, Mladěnka P. Vitamin D: sources, physiological role, biokinetics, deficiency, therapeutic use, toxicity, and overview of analytical methods for detection of vitamin D and its metabolites. Crit Rev Clin Lab Sci 2022; 59:517-554. [PMID: 35575431 DOI: 10.1080/10408363.2022.2070595] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Vitamin D has a well-known role in the calcium homeostasis associated with the maintenance of healthy bones. It increases the efficiency of the intestinal absorption of dietary calcium, reduces calcium losses in urine, and mobilizes calcium stored in the skeleton. However, vitamin D receptors are present ubiquitously in the human body and indeed, vitamin D has a plethora of non-calcemic functions. In contrast to most vitamins, sufficient vitamin D can be synthesized in human skin. However, its production can be markedly decreased due to factors such as clothing, sunscreens, intentional avoidance of the direct sunlight, or the high latitude of the residence. Indeed, more than one billion people worldwide are vitamin D deficient, and the deficiency is frequently undiagnosed. The chronic deficiency is not only associated with rickets/osteomalacia/osteoporosis but it is also linked to a higher risk of hypertension, type 1 diabetes, multiple sclerosis, or cancer. Supplementation of vitamin D may be hence beneficial, but the intake of vitamin D should be under the supervision of health professionals because overdosing leads to intoxication with severe health consequences. For monitoring vitamin D, several analytical methods are employed, and their advantages and disadvantages are discussed in detail in this review.
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Affiliation(s)
- Jiří Janoušek
- Department of Pharmacognosy, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
| | - Veronika Pilařová
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
| | - Kateřina Macáková
- Department of Pharmacognosy, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
| | - Anderson Nomura
- UCIBIO - Applied Molecular Biosciences Unit, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Jéssica Veiga-Matos
- UCIBIO - Applied Molecular Biosciences Unit, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Diana Dias da Silva
- UCIBIO - Applied Molecular Biosciences Unit, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal.,TOXRUN - Toxicology Research Unit, University Institute of Health Sciences, CESPU CRL, Gandra, Portugal
| | - Fernando Remião
- UCIBIO - Applied Molecular Biosciences Unit, REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Porto, Portugal.,Associate Laboratory i4HB - Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, Porto, Portugal
| | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Rome, Italy
| | - Kateřina Malá-Ládová
- Department of Social and Clinical Pharmacy, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
| | - Josef Malý
- Department of Social and Clinical Pharmacy, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
| | - Lucie Nováková
- Department of Analytical Chemistry, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
| | - Přemysl Mladěnka
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Charles University, Hradec Králové, Czech Republic
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8
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Haris A, Lam YPY, Wootton CA, Theisen A, Marzullo BP, Schorr P, Volmer DA, O’Connor PB. Differentiation of Dihydroxylated Vitamin D 3 Isomers Using Tandem Mass Spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2022; 33:1022-1030. [PMID: 35561028 PMCID: PMC9164238 DOI: 10.1021/jasms.2c00085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/28/2022] [Accepted: 04/29/2022] [Indexed: 06/15/2023]
Abstract
Vitamin D compounds are a group of secosteroids derived from cholesterol that are vital for maintaining bone health in humans. Recent studies have shown extraskeletal effects of vitamin D, involving vitamin D metabolites such as the dihydroxylated vitamin D3 compounds 1,25-dihydroxyvitamin D3 and 24,25-dihydroxyvitamin D3. Differentiation and characterization of these isomers by mass spectrometry can be challenging due to the zero-mass difference and minor structural differences between them. The isomers usually require separation by liquid chromatography (LC) prior to mass spectrometry, which adds extra complexity to the analysis. Herein, we investigated and revisited the use of fragmentation methods such as collisional induced dissociation (CID), infrared multiphoton dissociation (IRMPD), electron induced dissociation (EID), and ultraviolet photodissociation (UVPD), available on a 12T Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) to generate characteristic fragments for the dihydroxylated vitamin D3 isomers that can be used to distinguish between them. Isomer-specific fragments were observed for the 1,25-dihydroxyvitamin D3, which were clearly absent in the 24,25-dihydroxyvitamin D3 MS/MS spectra using all fragmentation methods mentioned above. The fragments generated due to cleavage of the C-6/C-7 bond in the 1,25-dihydroxyvitamin D3 compound demonstrate that the fragile OH groups were retained during fragmentation, thus enabling differentiation between the two dihydroxylated vitamin D3 isomers without the need for prior chromatographic separation or derivatization.
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Affiliation(s)
- Anisha Haris
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
| | - Yuko P. Y. Lam
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
| | | | - Alina Theisen
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
| | - Bryan P. Marzullo
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
| | - Pascal Schorr
- Institut
für Chemie, Humboldt-Universität
zu Berlin, 12489 Berlin, Germany
| | - Dietrich A. Volmer
- Institut
für Chemie, Humboldt-Universität
zu Berlin, 12489 Berlin, Germany
| | - Peter B. O’Connor
- Department
of Chemistry, University of Warwick, Coventry CV4 7AL, U.K.
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9
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Fernández-Vicente M, Miján-de-la-Torre A, Vella-Ramírez J, Martí-Bonmatí E, Benito-Ibáñez V, Martínez-de-Arriba R. Variables influyentes en los niveles de 25(OH)D total y libre en población sana. REVISTA CLÍNICA ESPAÑOLA 2022. [DOI: 10.1016/j.rce.2021.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Synthesis of Deuterium-Labeled Vitamin D Metabolites as Internal Standards for LC-MS Analysis. Molecules 2022; 27:molecules27082427. [PMID: 35458625 PMCID: PMC9025501 DOI: 10.3390/molecules27082427] [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: 03/19/2022] [Revised: 04/05/2022] [Accepted: 04/06/2022] [Indexed: 01/27/2023] Open
Abstract
Blood levels of the vitamin D3 (D3) metabolites 25-hydroxyvitamin D3 (25(OH)D3), 24R,25-dihydroxyvitamin D3, and 1α,25-dihydroxyvitamin D3 (1,25(OH)2D3) are recognized indicators for the diagnosis of bone metabolism-related diseases, D3 deficiency-related diseases, and hypercalcemia, and are generally measured by liquid-chromatography tandem mass spectrometry (LC-MS/MS) using an isotope dilution method. However, other D3 metabolites, such as 20-hydroxyvitamin D3 and lactone D3, also show interesting biological activities and stable isotope-labeled derivatives are required for LC-MS/MS analysis of their concentrations in serum. Here, we describe a versatile synthesis of deuterium-labeled D3 metabolites using A-ring synthons containing three deuterium atoms. Deuterium-labeled 25(OH)D3 (2), 25(OH)D3-23,26-lactone (6), and 1,25(OH)2D3-23,26-lactone (7) were synthesized, and successfully applied as internal standards for the measurement of these compounds in pooled human serum. This is the first quantification of 1,25(OH)2D3-23,26-lactone (7) in human serum.
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11
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Fernández-Vicente M, Miján-de-la-Torre A, Vella-Ramírez J, Martí-Bonmatí E, Benito-Ibáñez V, Martínez-de-Arriba R. Influencing variables on total and free 25(OH)D levels in healthy population. Rev Clin Esp 2022; 222:313-320. [DOI: 10.1016/j.rceng.2021.09.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 09/16/2021] [Indexed: 10/19/2022]
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12
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Liu H, Wang DJ, Wan KX, Zhang J, Yuan ZJ, Yu CW, Yang J, Zou L. Simultaneous quantification of fat-soluble vitamins A, 25-hydroxylvitamin D and vitamin E in plasma from children using liquid chromatography coupled to Orbitrap mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2021; 1177:122795. [PMID: 34098179 DOI: 10.1016/j.jchromb.2021.122795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 04/06/2021] [Accepted: 05/21/2021] [Indexed: 10/21/2022]
Abstract
The fat-soluble vitamins A, D, E and K are micronutrients essential for physiological activity, metabolism and growth. Accurate and sensitive analytical methods are needed to support growing research into fat-soluble vitamins and their impact on children's growth and health. Here we report the first method for simultaneous quantification of fat-soluble vitamins A (retinol), 25-hydroxylvitamin D2, 25-hydroxylvitamin D3, and vitamin E (α-tocopherol) using a Q-Exactive Orbitrap mass spectrometer in high-resolution, parallel reaction monitoring mode. This method can select desired ions with high efficiency, potentially making it superior to triple-quadrupole mass spectrometers that employ multiple reaction monitoring. The proposed method offers excellent accuracy, specificity, and sensitivity, as demonstrated with plasma samples from healthy children.
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Affiliation(s)
- Hao Liu
- Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, People's Republic of China.
| | - Dong-Juan Wang
- Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, People's Republic of China
| | - Ke-Xing Wan
- Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, People's Republic of China
| | - Juan Zhang
- Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, People's Republic of China
| | - Zhao-Jian Yuan
- Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, People's Republic of China
| | - Chao-Wen Yu
- Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, People's Republic of China
| | - Jing Yang
- Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, People's Republic of China
| | - Lin Zou
- Center for Clinical Molecular Medicine, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, People's Republic of China
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13
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Máčová L, Bičíková M. Vitamin D: Current Challenges between the Laboratory and Clinical Practice. Nutrients 2021; 13:1758. [PMID: 34064098 PMCID: PMC8224373 DOI: 10.3390/nu13061758] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/11/2021] [Accepted: 05/17/2021] [Indexed: 12/21/2022] Open
Abstract
Vitamin D is a micronutrient with pleiotropic effects in humans. Due to sedentary lifestyles and increasing time spent indoors, a growing body of research is revealing that vitamin D deficiency is a global problem. Despite the routine measurement of vitamin D in clinical laboratories and many years of efforts, methods of vitamin D analysis have yet to be standardized and are burdened with significant difficulties. This review summarizes several key analytical and clinical challenges that accompany the current methods for measuring vitamin D. According to an external quality assessment, methods and laboratories still produce a high degree of variability. Structurally similar metabolites are a source of significant interference. Furthermore, there is still no consensus on the normal values of vitamin D in a healthy population. These and other problems discussed herein can be a source of inconsistency in the results of research studies.
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Affiliation(s)
- Ludmila Máčová
- Institute of Endocrinology, Národni 8, 11694 Prague, Czech Republic;
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14
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Jenkinson C, Desai R, Slominski AT, Tuckey RC, Hewison M, Handelsman DJ. Simultaneous measurement of 13 circulating vitamin D3 and D2 mono and dihydroxy metabolites using liquid chromatography mass spectrometry. Clin Chem Lab Med 2021; 59:1642-1652. [PMID: 34013677 PMCID: PMC8419114 DOI: 10.1515/cclm-2021-0441] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 05/07/2021] [Indexed: 11/15/2022]
Abstract
Objectives Clinical evaluation of vitamin D status is conventionally performed by measuring serum levels of a single vitamin D metabolite, 25-hydroxyvitamin D predominantly by immunoassay methodology. However, this neglects the complex metabolic pathways involved in vitamin D bioactivity, including two canonical forms D3 and D2, bioactive 1,25-dihydroxy metabolites and inactive 24-hydroxy and other metabolites. Methods Liquid chromatography-tandem mass spectrometry (LC-MS/MS) can measure multiple analytes in a sample during a single run with high sensitivity and reference level specificity. We therefore aimed to develop and validate a LC-MS/MS method to measure simultaneously 13 circulating vitamin D metabolites and apply it to 103 human serum samples. Results The LC-MS/MS method using a Cookson-type derivatization reagent phenyl-1,2,4-triazoline-3,5-dione (PTAD) quantifies 13 vitamin D metabolites, including mono and dihydroxy-metabolites, as well as CYP11A1-derived D3 and D2 metabolites in a single run. The lower limit of quantitation was 12.5 pg/mL for 1,25(OH)2D3 with accuracy verified by analysis of National Institute of Standards and Technology (NIST) 972a standards. Quantification of seven metabolites (25(OH)D3, 25(OH)D2, 3-epi-25(OH)D3, 20(OH)D3, 24,25(OH)2D3, 1,25(OH)2D3 and 1,20S(OH)2D3) was consistently achieved in human serum samples. Conclusions This profiling method can provide new insight into circulating vitamin D metabolite pathways forming the basis for improved understanding of the role of vitamin D in health and disease.
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Affiliation(s)
- Carl Jenkinson
- Andrology, ANZAC Research Institute, University of Sydney, Sydney, NSW, Australia.,Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - Reena Desai
- Andrology, ANZAC Research Institute, University of Sydney, Sydney, NSW, Australia
| | - Andrzej T Slominski
- Department of Dermatology, University of Alabama at Birmingham, Pathology and Laboratory Medicine Service, VA Medical Center, Birmingham, AL, USA
| | - Robert C Tuckey
- School of Molecular Sciences, The University of Western Australia, Perth, WA, Australia
| | - Martin Hewison
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
| | - David J Handelsman
- Andrology, ANZAC Research Institute, University of Sydney, Sydney, NSW, Australia
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15
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Selective, rapid and simultaneous determination of ergosterol and ergocalciferol in mushrooms by UPLC-Q-TOF-MS. J Pharm Biomed Anal 2020; 194:113748. [PMID: 33272787 DOI: 10.1016/j.jpba.2020.113748] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/29/2020] [Accepted: 10/31/2020] [Indexed: 12/18/2022]
Abstract
An ultra-performance liquid chromatography coupled to atmospheric pressure chemical ionization-quadrupole time-of-flight mass spectrometry method has been optimized and validated for the determination of ergosterol and ergocalciferol in mushroom samples, using cholecalciferol as surrogate standard. The separation was carried out with a Synergi Hydro-RP column (100 mm x 3.00 mm i.d, 2.5 μm particle size), (Phenomenex, CA, USA) column, thermostated at 35 °C. The mobile phase was 0.1 % formic acid aqueous solution and methanol in gradient elution mode and it was achieved in 5 min approximately. Detection was achieved by atmospheric pressure chemical ionization in positive mode and quadrupole time-of-flight mass spectrometry. Desolvation and interface temperatures were set at 500 °C and 150 °C, respectively. The recoveries obtained were within 92-105 % for ergosterol, 77-81 % for ergocalciferol and 83-87 % for cholecalciferol. Method limits of detection were 0.4 and 0.5 μg g-1 for ergosterol and ergocalciferol, respectively, and method limits of quantitation were 1.2 and 1.3 μg g-1 for ergosterol and ergocalciferol, respectively. A rapid and simple extraction procedure using small amount of sample (100 mg) with hexane was optimized and the method was applied to the determination of ergosterol and ergocalciferol in white button mushrooms (Agaricus bisporus var. bisporus) exposed to UV irradiation. Results were compared to the corresponding non-irradiated mushrooms.
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16
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Hurst EA, Homer NZ, Mellanby RJ. Vitamin D Metabolism and Profiling in Veterinary Species. Metabolites 2020; 10:E371. [PMID: 32942601 PMCID: PMC7569877 DOI: 10.3390/metabo10090371] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/11/2020] [Accepted: 09/13/2020] [Indexed: 12/17/2022] Open
Abstract
The demand for vitamin D analysis in veterinary species is increasing with the growing knowledge of the extra-skeletal role vitamin D plays in health and disease. The circulating 25-hydroxyvitamin-D (25(OH)D) metabolite is used to assess vitamin D status, and the benefits of analysing other metabolites in the complex vitamin D pathway are being discovered in humans. Profiling of the vitamin D pathway by liquid chromatography tandem mass spectrometry (LC-MS/MS) facilitates simultaneous analysis of multiple metabolites in a single sample and over wide dynamic ranges, and this method is now considered the gold-standard for quantifying vitamin D metabolites. However, very few studies report using LC-MS/MS for the analysis of vitamin D metabolites in veterinary species. Given the complexity of the vitamin D pathway and the similarities in the roles of vitamin D in health and disease between humans and companion animals, there is a clear need to establish a comprehensive, reliable method for veterinary analysis that is comparable to that used in human clinical practice. In this review, we highlight the differences in vitamin D metabolism between veterinary species and the benefits of measuring vitamin D metabolites beyond 25(OH)D. Finally, we discuss the analytical challenges in profiling vitamin D in veterinary species with a focus on LC-MS/MS methods.
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Affiliation(s)
- Emma A. Hurst
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, Edinburgh, Scotland EH25 9RG, UK;
- Mass Spectrometry Core, Edinburgh Clinical Research Facility, Queen’s Medical Research Institute, The University of Edinburgh, Little France Crescent, Edinburgh, Scotland EH16 4TJ, UK;
| | - Natalie Z. Homer
- Mass Spectrometry Core, Edinburgh Clinical Research Facility, Queen’s Medical Research Institute, The University of Edinburgh, Little France Crescent, Edinburgh, Scotland EH16 4TJ, UK;
| | - Richard J. Mellanby
- The Roslin Institute and Royal (Dick) School of Veterinary Studies, The University of Edinburgh, Easter Bush, Midlothian, Edinburgh, Scotland EH25 9RG, UK;
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17
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Saponaro F, Saba A, Zucchi R. An Update on Vitamin D Metabolism. Int J Mol Sci 2020; 21:ijms21186573. [PMID: 32911795 PMCID: PMC7554947 DOI: 10.3390/ijms21186573] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/22/2020] [Accepted: 09/01/2020] [Indexed: 02/06/2023] Open
Abstract
Vitamin D is a steroid hormone classically involved in the calcium metabolism and bone homeostasis. Recently, new and interesting aspects of vitamin D metabolism has been elucidated, namely the special role of the skin, the metabolic control of liver hydroxylase CYP2R1, the specificity of 1α-hydroxylase in different tissues and cell types and the genomic, non-genomic and epigenomic effects of vitamin D receptor, which will be addressed in the present review. Moreover, in the last decades, several extraskeletal effects which can be attributed to vitamin D have been shown. These beneficial effects will be here summarized, focusing on the immune system and cardiovascular system.
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18
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Seki M, Sato M, Takiwaki M, Takahashi K, Kikutani Y, Satoh M, Nomura F, Kuroda Y, Fukuzawa S. A novel caged Cookson-type reagent toward a practical vitamin D derivatization method for mass spectrometric analyses. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8648. [PMID: 31715032 PMCID: PMC7064983 DOI: 10.1002/rcm.8648] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/01/2019] [Accepted: 11/03/2019] [Indexed: 05/05/2023]
Abstract
RATIONALE 25-Hydroxylated vitamin D is the best marker for vitamin D (VD). Due to its low ionization efficiency, a Cookson-type reagent, 1,2,4-triazoline-3,5-dione (TAD), is used to improve the detection/quantification of VD metabolites by liquid chromatography/tandem mass spectrometry (LC/MS/MS). However, the high reactivity of TAD makes its solution stability low and inconvenient for practical use. We here describe the development of a novel caged Cookson-type reagent, and we assess its performances in the quantitative and differential detection of four VD metabolites in serum using LC/MS/MS. METHODS Caged 4-(4'-dimethylaminophenyl)-1,2,4-triazoline-3,5-dione (DAPTAD) analogues were prepared from 4-(4'-dimethylaminophenyl)-1,2,4-triazolidine-3,5-dione. Their stability and reactivity were examined. The optimized caged DAPTAD (14-(4-(dimethylamino)phenyl)-9-phenyl-9,10-dihydro-9,10-[1,2]epitriazoloanthracene-13,15-dione, DAP-PA) was used for LC/MS/MS analyses of VD metabolites. RESULTS The solution stability of DAP-PA in ethyl acetate dramatically improved compared with that of the non-caged one. We measured the thermal retro-Diels-Alder reaction enabling the release of DAPTAD and found that the derivatization reaction was temperature-dependent. We also determined the detection limit and the lower limit of quantifications for four VD metabolites with DAPTAD derivatization. CONCLUSIONS DAP-PA was stable enough for mid- to long-term storage in solution. This advantage shall contribute to the detection and quantification of VD in clinical laboratories, and as such to the broader use of clinical mass spectrometry.
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Affiliation(s)
- Masahiko Seki
- Medical Association GroupTokuyama CorporationIbarakiJapan
| | - Makoto Sato
- Tsukuba Research LabTokuyama CorporationIbarakiJapan
| | - Masaki Takiwaki
- Open Innovation Promotion Department, Management Strategy Planning DivisionJEOL Ltd.TokyoJapan
- Division of Clinical Mass SpectrometryChiba University HospitalChibaJapan
| | - Koji Takahashi
- Open Innovation Promotion Department, Management Strategy Planning DivisionJEOL Ltd.TokyoJapan
- Department of Biotechnology and Life Science, Faculty of TechnologyTokyo University of Agriculture and TechnologyTokyoJapan
| | - Yoshikuni Kikutani
- Open Innovation Promotion Department, Management Strategy Planning DivisionJEOL Ltd.TokyoJapan
- Department of Biotechnology and Life Science, Faculty of TechnologyTokyo University of Agriculture and TechnologyTokyoJapan
| | - Mamoru Satoh
- Division of Clinical Mass SpectrometryChiba University HospitalChibaJapan
| | - Fumio Nomura
- Division of Clinical Mass SpectrometryChiba University HospitalChibaJapan
| | - Yutaka Kuroda
- Department of Biotechnology and Life Science, Faculty of TechnologyTokyo University of Agriculture and TechnologyTokyoJapan
| | - Seketsu Fukuzawa
- Open Innovation Promotion Department, Management Strategy Planning DivisionJEOL Ltd.TokyoJapan
- Department of Biotechnology and Life Science, Faculty of TechnologyTokyo University of Agriculture and TechnologyTokyoJapan
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19
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Jenkinson C. The vitamin D metabolome: An update on analysis and function. Cell Biochem Funct 2019; 37:408-423. [PMID: 31328813 DOI: 10.1002/cbf.3421] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 05/03/2019] [Accepted: 06/05/2019] [Indexed: 01/08/2023]
Abstract
Current understanding of vitamin D tends to be focussed on the measurement of the major circulating form 25-hydroxyvitamin D3 (25OHD3) and its conversion to the active hormonal form, 1α,25-dihydroxyvitamin D3 (1α,25(OH)2 D3) via the enzyme 25-hydroxyvitamin D-1α-hydroxylase (CYP27B1). However, whilst these metabolites form the endocrine backbone of vitamin D physiology, it is important to recognise that there are other metabolic and catabolic pathways that are now recognised as being crucially important to vitamin D function. These pathways include C3-epimerization, CYP24A1 hydroxylase, CYP11A1 alternative metabolism of vitamin D3, and phase II metabolism. Endogenous metabolites beyond 25OHD3 are usually present at low endogenous levels and may only be functional in specific target tissues rather than in the general circulation. However, the technologies available to measure these metabolites have also improved, so that measurement of alternative vitamin D metabolic pathways may become more routine in the near future. The aim of this review is to provide a comprehensive overview of the various pathways of vitamin D metabolism, as well as describe the analytical techniques currently available to measure these vitamin D metabolites.
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Affiliation(s)
- Carl Jenkinson
- Institute of Metabolism and Systems Research, University of Birmingham, Birmingham, UK
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20
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Screening for Preterm Birth: Potential for a Metabolomics Biomarker Panel. Metabolites 2019; 9:metabo9050090. [PMID: 31067710 PMCID: PMC6572582 DOI: 10.3390/metabo9050090] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/24/2019] [Accepted: 04/30/2019] [Indexed: 12/27/2022] Open
Abstract
The aim of this preliminary study was to investigate the potential of maternal serum to provide metabolomic biomarker candidates for the prediction of spontaneous preterm birth (SPTB) in asymptomatic pregnant women at 15 and/or 20 weeks’ gestation. Metabolomics LC-MS datasets from serum samples at 15- and 20-weeks’ gestation from a cohort of approximately 50 cases (GA < 37 weeks) and 55 controls (GA > 41weeks) were analysed for candidate biomarkers predictive of SPTB. Lists of the top ranked candidate biomarkers from both multivariate and univariate analyses were produced. At the 20 weeks’ GA time-point these lists had high concordance with each other (85%). A subset of 4 of these features produce a biomarker panel that predicts SPTB with a partial Area Under the Curve (pAUC) of 12.2, a sensitivity of 87.8%, a specificity of 57.7% and a p-value of 0.0013 upon 10-fold cross validation using PanelomiX software. This biomarker panel contained mostly features from groups already associated in the literature with preterm birth and consisted of 4 features from the biological groups of “Bile Acids”, “Prostaglandins”, “Vitamin D and derivatives” and “Fatty Acids and Conjugates”.
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21
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Yoshimura Y, Hibi R, Nakata A, Togashi M, Ogawa S, Ishige T, Satoh M, Nomura F, Higashi T. Identification of conjugation positions of urinary glucuronidated vitamin D
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metabolites by LC/ESI–MS/MS after conversion to MS/MS‐fragmentable derivatives. Biomed Chromatogr 2019; 33:e4538. [DOI: 10.1002/bmc.4538] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 03/10/2019] [Accepted: 03/18/2019] [Indexed: 12/27/2022]
Affiliation(s)
- Yusuke Yoshimura
- Faculty of Pharmaceutical SciencesTokyo University of Science Noda‐shi Chiba Japan
| | - Ryuichiro Hibi
- Faculty of Pharmaceutical SciencesTokyo University of Science Noda‐shi Chiba Japan
| | - Akiho Nakata
- Faculty of Pharmaceutical SciencesTokyo University of Science Noda‐shi Chiba Japan
| | - Moeka Togashi
- Faculty of Pharmaceutical SciencesTokyo University of Science Noda‐shi Chiba Japan
| | - Shoujiro Ogawa
- Faculty of Pharmaceutical SciencesTokyo University of Science Noda‐shi Chiba Japan
| | - Takayuki Ishige
- Division of Laboratory MedicineChiba University Hospital Chiba Japan
| | - Mamoru Satoh
- Division of Clinical Mass SpectrometryChiba University Hospital Chiba Japan
| | - Fumio Nomura
- Division of Clinical Mass SpectrometryChiba University Hospital Chiba Japan
| | - Tatsuya Higashi
- Faculty of Pharmaceutical SciencesTokyo University of Science Noda‐shi Chiba Japan
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22
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Rola R, Kowalski K, Bieńkowski T, Kołodyńska-Goworek A, Studzińska S. Development of a method for multiple vitamin D metabolite measurements by liquid chromatography coupled with tandem mass spectrometry in dried blood spots. Analyst 2019; 144:299-309. [PMID: 30403208 DOI: 10.1039/c8an01422a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
There are two forms of vitamin D which are essential to the human body, i.e. vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). The inactive metabolites of vitamin D are commonly used for quantitative analysis because of their longer half-life, stability, and relatively high blood concentrations. This paper presents the development of a high-throughput and sensitive method for determining four vitamin D metabolites in dried blood spots using liquid chromatography coupled with tandem mass spectrometry. This method allows for the determination of 25(OH)D2 and 25(OH)D3 concentrations, as well as the epimeric form 3-epi-25(OH)D3 and 24,25(OH)2D3. The analyzed material is capillary blood taken from the fingertip, deposited on filter paper. Four different chromatographic columns were tested to separate all compounds, in particular, the epimeric form. The column of choice was F5 (Phenomenex, Torrance, CA, USA). In order to prove the consistency between the results for DBS, used as an alternative biological matrix, and serum, comparative studies of these two materials were carried out in nearly 100 individuals. The results indicated their positive correlation. The evaluation of short-term stability of metabolites in DBS within the month showed no change in metabolite concentration. During the validation, the impact of the matrix on the ionization of the tested compounds was evaluated. Capillary blood and venous blood collected for different anticoagulants were also compared. The smallest differences in the results were obtained for citrate. In order to achieve a limit of quantitation of 0.2 ng ml-1, sample preparation involved derivatization using a Cookson-type reagent, 4-(4'-dimethylaminophenyl)-1,2,4-triazoline-3,5-dione (DAPTAD).
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Affiliation(s)
- R Rola
- Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarin St., PL - 87-100 Toruń, Poland. and Masdiag - Diagnostic Mass Spectrometry Laboratory, 33 Stefana Żeromskiego St., PL - 01-882 Warsaw, Poland
| | - K Kowalski
- Masdiag - Diagnostic Mass Spectrometry Laboratory, 33 Stefana Żeromskiego St., PL - 01-882 Warsaw, Poland
| | - T Bieńkowski
- Masdiag - Diagnostic Mass Spectrometry Laboratory, 33 Stefana Żeromskiego St., PL - 01-882 Warsaw, Poland
| | - A Kołodyńska-Goworek
- Masdiag - Diagnostic Mass Spectrometry Laboratory, 33 Stefana Żeromskiego St., PL - 01-882 Warsaw, Poland
| | - S Studzińska
- Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarin St., PL - 87-100 Toruń, Poland.
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23
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Yang MY, Huang CY, Chiu THT, Chang KC, Lin MN, Chen LY, Hu A. Using gas chromatography and mass spectrometry to determine 25-hydroxyvitamin D levels for clinical assessment of vitamin D deficiency. J Food Drug Anal 2019; 27:494-501. [PMID: 30987720 PMCID: PMC9296203 DOI: 10.1016/j.jfda.2018.12.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 12/23/2018] [Accepted: 12/24/2018] [Indexed: 02/08/2023] Open
Abstract
Vitamin D is responsible for multiple metabolic functions in humans. Rickets are the most common disease caused by vitamin D deficiency. It is caused by poor calcium intake resulting in poor serum-ionized calcium. The purpose of this study is to develop a rapid, sensitive, and feasible method to determine the 25-hydroxy-vitamin D3 (25(OH)D3) levels in blood samples for clinical assessment. In this study, gas chromatography coupled mass spectrometry with trimethylsilyl derivatization (TMS-GC-MS) is the most suitable protocol for quantitative analyses of 25(OH)D3. Performance of method was evaluated and compared with liquid chromatography and immunoassay. Method validation has been carried out with plasma specimens. The limit of quantitation of TMS-GC-MS method is 1.5 ppb with good linear correlation. Furthermore, the dietary intake and nutritional status of vegetarian and non-vegetarians in Taiwan were assessed by our validated method. As a result, this vitamin D nutrition survey demonstrates that most Taiwanese people have insufficient vitamin D. Due to dietary habits; the male vegans may have the highest risk of vitamin D deficiency.
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Affiliation(s)
- Ming-Yeh Yang
- Institute of Medical Sciences, Tzu-Chi University, Hualien, Taiwan
| | - Ching-Yuan Huang
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu-Chi University, Hualien, Taiwan
| | - Tina H T Chiu
- Department of Nutrition Therapy, Buddhist Tzu-Chi Medical Foundation, Hualien, Taiwan; Department of Medicine, College of Medicine, Tzu-Chi University, Hualien, Taiwan
| | - Kai-Chih Chang
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu-Chi University, Hualien, Taiwan; Department of Laboratory Medicine, Buddhist Tzu-Chi General Hospital, Hualien, Taiwan
| | - Ming-Nan Lin
- Department of Family Medicine, Dalin Tzu-Chi Hospital, Buddhist Tzu-Chi Medical Foundation, Chiayi County, Taiwan; Department of Family Medicine, College of Medicine, Tzu-Chi University, Hualien, Taiwan
| | - Liang-Yü Chen
- Department of Biotechnology, Ming-Chuan University, Taoyuan City, Taiwan.
| | - Anren Hu
- Department of Laboratory Medicine and Biotechnology, College of Medicine, Tzu-Chi University, Hualien, Taiwan.
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24
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Recent advances in sample preparation and analysis methods for vitamin D and its analogues in different matrices. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.11.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Bikle DD, Schwartz J. Vitamin D Binding Protein, Total and Free Vitamin D Levels in Different Physiological and Pathophysiological Conditions. Front Endocrinol (Lausanne) 2019; 10:317. [PMID: 31191450 PMCID: PMC6546814 DOI: 10.3389/fendo.2019.00317] [Citation(s) in RCA: 227] [Impact Index Per Article: 45.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 05/01/2019] [Indexed: 12/19/2022] Open
Abstract
This review focuses on the biologic importance of the vitamin D binding protein (DBP) with emphasis on its regulation of total and free vitamin D metabolite levels in various clinical conditions. Nearly all DBP is produced in the liver, where its regulation is influenced by estrogen, glucocorticoids and inflammatory cytokines but not by vitamin D itself. DBP is the most polymorphic protein known, and different DBP alleles can have substantial impact on its biologic functions. The three most common alleles-Gc1f, Gc1s, Gc2-differ in their affinity with the vitamin D metabolites and have been variably associated with a number of clinical conditions. Although DBP has a number of biologic functions independent of vitamin D, its major biologic function is that of regulating circulating free and total levels of vitamin D metabolites. 25 hydroxyvitamin D (25(OH)D) is the best studied form of vitamin D as it provides the best measure of vitamin D status. In a normal non-pregnant individual, approximately 0.03% of 25(OH)D is free; 85% is bound to DBP, 15% is bound to albumin. The free hormone hypothesis postulates that only free 25(OH)D can enter cells. This hypothesis is supported by the observation that mice lacking DBP, and therefore with essentially undetectable 25(OH)D levels, do not show signs of vitamin D deficiency unless put on a vitamin D deficient diet. Similar observations have recently been described in a family with a DBP mutation. This hypothesis also applies to other protein bound lipophilic hormones including glucocorticoids, sex steroids, and thyroid hormone. However, tissues expressing the megalin/cubilin complex, such as the kidney, have the capability of taking up 25(OH)D still bound to DBP, but most tissues rely on the free level. Attempts to calculate the free level using affinity constants generated in a normal individual along with measurement of DBP and total 25(OH)D have not accurately reflected directly measured free levels in a number of clinical conditions. In this review, we examine the impact of different clinical conditions as well as different DBP alleles on the relationship between total and free 25(OH)D, using only data in which the free 25(OH)D level was directly measured. The major conclusion is that a number of clinical conditions alter this relationship, raising the question whether measuring just total 25(OH)D might be misleading regarding the assessment of vitamin D status, and such assessment might be improved by measuring free 25(OH)D instead of or in addition to total 25(OH)D.
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Affiliation(s)
- Daniel David Bikle
- Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
- Endocrine Research Unit, San Francisco Veterans Affairs Medical Center, San Francisco, CA, United States
- *Correspondence: Daniel David Bikle
| | - Janice Schwartz
- Department of Medicine, University of California, San Francisco, San Francisco, CA, United States
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26
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Chouinard CD, Cruzeiro VWD, Kemperman RH, Oranzi NR, Roitberg AE, Yost RA. Cation-Dependent Conformations in 25-Hydroxyvitamin D3-Cation Adducts Measured by Ion Mobility-Mass Spectrometry and Theoretical Modeling. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY 2018; 432:1-8. [PMID: 30034270 PMCID: PMC6052799 DOI: 10.1016/j.ijms.2018.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Ion mobility-mass spectrometry is a useful tool in separation of biological isomers, including clinically relevant analytes such as 25-hydroxyvitamin D3 (25OHD3) and its epimer, 3-epi-25-hydroxyvitamin D3 (epi25OHD3). Previous research indicates that these epimers adopt different gas-phase sodiated monomer structures, either the "open" or "closed" conformer, which allow 25OHD3 to be readily resolved in mixtures. In the current work, alternative metal cation adducts are investigated for their relative effects on the ratio of "open" and "closed conformers. Alkali and alkaline earth metal adducts caused changes in the 25OHD3 conformer ratio, where the proportion of the "open" conformer generally increases with the size of the metal cation in a given group. As such, the ratio of the "open" conformer, which is unique to 25OHD3 and absent for its epimer, can be increased from approximately 1:1 for the sodiated monomer to greater than 8:1 for the barium adduct. Molecular modeling and energy calculations agree with the experimental results, indicating that the Gibbs free energy of conversion from the "closed" to the "open" conformation decreased with increasing cation size, correlating with the variation in ratio between the conformers. This work demonstrates the effect of cation adducts on gas-phase conformations of small, flexible molecules and offers an additional strategy for resolution of clinically relevant epimers.
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Affiliation(s)
- Christopher D. Chouinard
- Department of Chemistry, University of Florida, Gainesville, FL 32611, United States
- Current Address: Biological Sciences Division, Pacific Northwest National Lab, Richland, WA 99352, United States
| | - Vinicius Wilian D. Cruzeiro
- Department of Chemistry, University of Florida, Gainesville, FL 32611, United States
- CAPES Foundation, Ministry of Education of Brazil, Brasilia - DF 70040-020, Brazil
| | - Robin H.J. Kemperman
- Department of Chemistry, University of Florida, Gainesville, FL 32611, United States
| | - Nicholas R. Oranzi
- Department of Chemistry, University of Florida, Gainesville, FL 32611, United States
| | - Adrian E. Roitberg
- Department of Chemistry, University of Florida, Gainesville, FL 32611, United States
| | - Richard A. Yost
- Department of Chemistry, University of Florida, Gainesville, FL 32611, United States
- Southeast Center for Integrated Metabolomics (SECIM), University of Florida, Gainesville, FL
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Saponaro F, Saba A, Frascarelli S, Prontera C, Clerico A, Scalese M, Sessa MR, Cetani F, Borsari S, Pardi E, Marvelli A, Marcocci C, Passino C, Zucchi R. Vitamin D measurement and effect on outcome in a cohort of patients with heart failure. Endocr Connect 2018; 7:957-964. [PMID: 30300540 PMCID: PMC6176284 DOI: 10.1530/ec-18-0207] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES The aims of this paper were to evaluate the levels of Vitamin D (VitD) in patients with heart failure (HF), compared to a control group, to assess the effects of VitD on HF outcome and to compare VitD measurement between LIAISON immunoassay and HPLC-MS-MS methods in this population. DESIGN AND METHODS We collected clinical, biochemical and outcome data from 247 patients with HF and in a subgroup of 151 patients, we measured VitD both with LIAISON and HPLC-MS-MS. RESULTS HF patients had statistically lower 25OHD levels (45.2 ± 23.7 nmol/L vs 58.2 ± 24.0 nmol/L, P < 0.001) and a statistically higher prevalence of VitD insufficiency (61.1% vs 39.5%, P < 0.001) and deficiency (24.7% vs 6.6%, P < 0.001), compared to healthy controls. There was a significant inverse relationship between baseline 25OHD and risk of HF-related death, with a HR of 0.59 (95% CI 0.37–0.92, P = 0.02), confirmed in a multivariate adjusted analysis. Kaplan–Meier survival analyses showed that VitD insufficiency was associated with reduced survival in HF patients (log rank P = 0.017). There was a good agreement between LIAISON and HPLC-MS-MS (Cohen’s kappa coefficient 0.70), but the prevalence of VitD insufficiency was significantly higher with the former compared to the latter method (58.3%, n = 88 vs 55.6%, n = 84, P < 0.001). LIAISON underestimated the 25OHD levels and showed a mean relative bias of −0.739% with 95% of limits of agreement (−9.00 to +7.52%), when compared to HPLC-MS-MS. CONCLUSIONS 25OHD levels adequately measured by HPLC-MS-MS showed to be low in HF population and to be correlated with HF-related risk of death.
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Affiliation(s)
- Federica Saponaro
- Department of SurgicalMedical, Molecular and Critical Area Pathology, Laboratory of Biochemistry, University of Pisa, Pisa, Italy
- Endocrinology Unit 2University of Pisa, Pisa, Italy
- Correspondence should be addressed to F Saponaro:
| | - Alessandro Saba
- Department of SurgicalMedical, Molecular and Critical Area Pathology, Laboratory of Biochemistry, University of Pisa, Pisa, Italy
- Laboratory of Clinical PathologyUniversity Hospital of Pisa, Pisa, Italy
| | - Sabina Frascarelli
- Department of SurgicalMedical, Molecular and Critical Area Pathology, Laboratory of Biochemistry, University of Pisa, Pisa, Italy
| | | | - Aldo Clerico
- Fondazione Toscana Gabriele MonasterioPisa, Italy
| | - Marco Scalese
- Institute of Clinical PhysiologyNational Council of Research, Pisa, Italy
| | - Maria Rita Sessa
- Laboratory of EndocrinologyUniversity Hospital of Pisa, Pisa, Italy
| | | | | | - Elena Pardi
- Endocrinology Unit 2University of Pisa, Pisa, Italy
| | - Antonella Marvelli
- Department of Translational Research and of New Surgical and Medical TechnologiesUniversity of Pisa, Pisa, Italy
| | | | | | - Riccardo Zucchi
- Department of SurgicalMedical, Molecular and Critical Area Pathology, Laboratory of Biochemistry, University of Pisa, Pisa, Italy
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Galior K, Ketha H, Grebe S, Singh RJ. 10 years of 25-hydroxyvitamin-D testing by LC-MS/MS-trends in vitamin-D deficiency and sufficiency. Bone Rep 2018; 8:268-273. [PMID: 29955644 PMCID: PMC6020395 DOI: 10.1016/j.bonr.2018.05.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 05/04/2018] [Accepted: 05/17/2018] [Indexed: 01/22/2023] Open
Abstract
In early 2000's vitamin-D deficiency was shown to be prevalent in several countries including the United States (US). Studies exploring the role of vitamin-D metabolism in diverse disease pathways generated an increased demand for vitamin-D supplementation and an immense public interest in measurement of vitamin-D metabolite levels. In this report, we review the role of vitamin-D metabolism in disease processes, clinical utility of measuring vitamin-D metabolites including 25-hydroxyvitamin-D (25(OH)D), 1,25-dihydroxyvitamin-D and 24,25-dihydroxyvitamin-D and discuss vitamin-D assay methodologies including immunoassays and liquid chromatography mass spectrometry (LC-MS/MS) assays. We also provide examples of vitamin-D toxicity and insight into the trends in serum 25(OH)D levels in the US population based on 10 years of data from on serum 25(OH)D values from ~5,000,000 patients who were tested at the Mayo Medical Laboratories between February 2007-February 2017.
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Affiliation(s)
- Kornelia Galior
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States
| | - Hemamalini Ketha
- Department of Pathology, University of Michigan Health System, Ann Arbor, MI, United States
| | - Stefan Grebe
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States
| | - Ravinder J Singh
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, United States
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29
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Simultaneous determination of 12 vitamin D compounds in human serum using online sample preparation and liquid chromatography-tandem mass spectrometry. J Chromatogr A 2018; 1533:57-65. [DOI: 10.1016/j.chroma.2017.12.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 12/03/2017] [Accepted: 12/05/2017] [Indexed: 11/21/2022]
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30
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Bikle DD, Malmstroem S, Schwartz J. Current Controversies: Are Free Vitamin Metabolite Levels a More Accurate Assessment of Vitamin D Status than Total Levels? Endocrinol Metab Clin North Am 2017; 46:901-918. [PMID: 29080642 PMCID: PMC5675107 DOI: 10.1016/j.ecl.2017.07.013] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The free hormone hypothesis postulates that only the nonbound fraction (the free fraction) of hormones that otherwise circulate in blood bound to their carrier proteins is able to enter cells and exert their biologic effects. For the vitamin D metabolites less than 1% (0.4% for 1,25(OH)2D and 0.03% for 25(OH)D) is free, with more than 99% bound to the vitamin D binding protein (DBP) and albumin (approximately 85% and 15%, respectively). Assays to measure the free vitamin D metabolite levels have been developed, and initial studies indicated their value in subjects with altered DBP levels.
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Affiliation(s)
- Daniel D Bikle
- Department of Medicine, University of California San Francisco, San Francisco VA Medical Center, 1700 Owens Street, San Francisco, CA 94158, USA.
| | - Sofie Malmstroem
- University of California San Francisco, 1700 Owens Street, San Francisco, CA 94158, USA; Department of Endocrinology and Internal Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Janice Schwartz
- University of California San Francisco, 1700 Owens Street, San Francisco, CA 94158, USA
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Qi Y, Müller MJ, Volmer DA. Activation of Reactive MALDI Adduct Ions Enables Differentiation of Dihydroxylated Vitamin D Isomers. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:2532-2537. [PMID: 28842822 DOI: 10.1007/s13361-017-1775-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 08/01/2017] [Accepted: 08/03/2017] [Indexed: 06/07/2023]
Abstract
Vitamin D compounds are secosteroids, which are best known for their role in bone health. More recent studies have shown that vitamin D metabolites and catabolites such as dihydroxylated species (e.g., 1,25- and 24,25-dihydroxyvitamin D3) play key roles in the pathologies of various diseases. Identification of these isomers by mass spectrometry is challenging and currently relies on liquid chromatography, as the isomers exhibit virtually identical product ion spectra under collision induced dissociation conditions. Here, we developed a simple MALDI-CID method that utilizes ion activation of reactive analyte/matrix adducts to distinguish isomeric dihydroxyvitamin D3 species, without the need for chromatography separation or chemical derivatization techniques. Specifically, reactive 1,5-diaminonaphthalene adducts of dihydroxyvitamin D3 compounds formed during MADI were activated and specific cleavages in the secosteroid's backbone structure were achieved that produced isomer-diagnostic fragment ions. Graphical Abstract ᅟ.
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Affiliation(s)
- Yulin Qi
- Institute of Bioanalytical Chemistry, Saarland University, D-66123, Saarbrücken, Germany
| | - Miriam J Müller
- Institute of Bioanalytical Chemistry, Saarland University, D-66123, Saarbrücken, Germany
| | - Dietrich A Volmer
- Institute of Bioanalytical Chemistry, Saarland University, D-66123, Saarbrücken, Germany.
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Pauwels S, Jans I, Billen J, Heijboer A, Verstuyf A, Carmeliet G, Mathieu C, Maestro M, Waelkens E, Evenepoel P, Bouillon R, Vanderschueren D, Vermeersch P. 1β,25-Dihydroxyvitamin D 3: A new vitamin D metabolite in human serum. J Steroid Biochem Mol Biol 2017; 173:341-348. [PMID: 28193495 DOI: 10.1016/j.jsbmb.2017.02.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 02/03/2017] [Accepted: 02/08/2017] [Indexed: 01/08/2023]
Abstract
BACKGROUND The measurement of 1α,25(OH)2D3 in human serum poses a true challenge as concentrations are very low and structurally similar metabolites can interfere. MATERIALS AND METHODS During optimization of our in-house LC-MSMS method for serum 1α,25(OH)2D3 a previously co-eluting isobaric interference was separated. The isobar was identified as 1β,25(OH)2D3 by comparing retention time and fragmentation spectra to standards (other isobaric dihydroxylated vitamin D3 analogs). 1β,25(OH)2D3 showed specific cluster formation (water), not present in 1α,25(OH)2D3. 1β,25(OH)2D3 was measured in serum of apparently healthy human volunteers (n=20), patients with high serum 25-hydroxyvitamin D [25(OH)D] concentrations (>50ng/mL) (n=33 among which 4 with very high levels (>150ng/mL)) and patients with kidney failure (n=68; 39 stage 1-3, 29 stage 4-5). Pearson's r was calculated for correlations and Mann-Whitney statistic to compare group medians. RESULTS Median serum 1β,25(OH)2D3 was 11pg/mL in apparently healthy volunteers and increased to 20pg/mL for serum 25(OH)D concentrations above 80ng/mL (n=22) (p<0.0001). 1β,25(OH)2D3 concentrations were significantly correlated to serum 25(OH)D concentrations (r=0.85) for the combined results from healthy volunteers and patient sera (n=53) (p<0.0001). For patients with kidney failure, median serum 1β,25(OH)2D3 was 7pg/mL and not different from the median level in healthy volunteers (p=0.06). The median concentration did not vary with different stages. CONCLUSIONS We present evidence for the widespread presence of 1β,25(OH)2D3, a new vitamin D metabolite, in human serum. The level increases with rising serum 25(OH)D concentrations and is particularly high in patients with very high 25(OH)D levels. We previously demonstrated that 1β,25(OH)2D3 is a poor genomic agonist but a potent non-genomic antagonist of 1α,25(OH)2D3. The clinical implications of the presence of this analog therefore require further exploration.
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Affiliation(s)
- Steven Pauwels
- Department of Laboratory Medicine, University Hospitals Leuven, 3000 Leuven, Belgium; Department of Cardiovascular Sciences, KU Leuven, 3000 Leuven, Belgium
| | - Ivo Jans
- Department of Laboratory Medicine, University Hospitals Leuven, 3000 Leuven, Belgium
| | - Jaak Billen
- Department of Laboratory Medicine, University Hospitals Leuven, 3000 Leuven, Belgium; Laboratory of Clinical and Experimental Endocrinology, KU Leuven, 3000 Leuven, Belgium
| | - Annemieke Heijboer
- Endocrine Laboratory, Department of Clinical Chemistry, VU University medical center, Amsterdam, the Netherlands
| | - Annemieke Verstuyf
- Laboratory of Clinical and Experimental Endocrinology, KU Leuven, 3000 Leuven, Belgium
| | - Geert Carmeliet
- Laboratory of Clinical and Experimental Endocrinology, KU Leuven, 3000 Leuven, Belgium
| | - Chantal Mathieu
- Laboratory of Clinical and Experimental Endocrinology, KU Leuven, 3000 Leuven, Belgium
| | - Miguel Maestro
- Department of Fundamental Chemistry, University of A Coruña, A Coruña, Spain
| | - Etienne Waelkens
- Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium
| | - Pieter Evenepoel
- Department of Immunology and Microbiology, Laboratory of Nephrology, KU Leuven, 3000 Leuven, Belgium
| | - Roger Bouillon
- Laboratory of Clinical and Experimental Endocrinology, KU Leuven, 3000 Leuven, Belgium.
| | - Dirk Vanderschueren
- Department of Laboratory Medicine, University Hospitals Leuven, 3000 Leuven, Belgium; Laboratory of Clinical and Experimental Endocrinology, KU Leuven, 3000 Leuven, Belgium
| | - Pieter Vermeersch
- Department of Laboratory Medicine, University Hospitals Leuven, 3000 Leuven, Belgium; Department of Cardiovascular Sciences, KU Leuven, 3000 Leuven, Belgium
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Blighe K, Chawes BL, Kelly RS, Mirzakhani H, McGeachie M, Litonjua AA, Weiss ST, Lasky-Su JA. Vitamin D prenatal programming of childhood metabolomics profiles at age 3 y. Am J Clin Nutr 2017; 106:1092-1099. [PMID: 28835366 PMCID: PMC5611786 DOI: 10.3945/ajcn.117.158220] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Accepted: 07/18/2017] [Indexed: 12/28/2022] Open
Abstract
Background: Vitamin D deficiency is implicated in a range of common complex diseases that may be prevented by gestational vitamin D repletion. Understanding the metabolic mechanisms related to in utero vitamin D exposure may therefore shed light on complex disease susceptibility.Objective: The goal was to analyze the programming role of in utero vitamin D exposure on children's metabolomics profiles.Design: First, unsupervised clustering was done with plasma metabolomics profiles from a case-control subset of 245 children aged 3 y with and without asthma from the Vitamin D Antenatal Asthma Reduction Trial (VDAART), in which pregnant women were randomly assigned to vitamin D supplementation or placebo. Thereafter, we analyzed the influence of maternal pre- and postsupplement vitamin D concentrations on cluster membership. Finally, we used the metabolites driving the clustering of children to identify the dominant metabolic pathways that were influential in each cluster.Results: We identified 3 clusters of children characterized by 1) high concentrations of fatty acids and amines and low maternal postsupplement vitamin D (mean ± SD; 27.5 ± 11.0 ng/mL), 2) high concentrations of amines, moderate concentrations of fatty acids, and normal maternal postsupplement vitamin D (34.0 ± 14.1 ng/mL), and 3) low concentrations of fatty acids, amines, and normal maternal postsupplement vitamin D (35.2 ± 15.9 ng/mL). Adjusting for sample storage time, maternal age and education, and both child asthma and vitamin D concentration at age 3 y did not modify the association between maternal postsupplement vitamin D and cluster membership (P = 0.0014). Maternal presupplement vitamin D did not influence cluster membership, whereas the combination of pre- and postsupplement concentrations did (P = 0.03).Conclusions: Young children can be clustered into distinct biologically meaningful groups by their metabolomics profiles. The clusters differed in concentrations of inflammatory mediators, and cluster membership was influenced by in utero vitamin D exposure, suggesting a prenatal programming role of vitamin D on the child's metabolome. This trial was registered at clinicaltrials.gov as NCT00920621.
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Affiliation(s)
- Kevin Blighe
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA; and
| | - Bo L Chawes
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA; and,Copenhagen Prospective Studies on Asthma in Childhood, Herlev and Gentofte Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Rachel S Kelly
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA; and
| | - Hooman Mirzakhani
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA; and
| | - Michael McGeachie
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA; and
| | - Augusto A Litonjua
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA; and
| | - Scott T Weiss
- Channing Division of Network Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA; and
| | - Jessica A Lasky-Su
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA; and
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Ishige T, Satoh M, Ogawa S, Nishimura M, Matsushita K, Higashi T, Nomura F. Improved sensitivity of serum/plasma 1α,25-dihydroxyvitamin D quantification by DAPTAD derivatization. Clin Chim Acta 2017; 473:173-179. [PMID: 28864231 DOI: 10.1016/j.cca.2017.08.033] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 08/28/2017] [Accepted: 08/28/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND Although immunoassays have several limitations such as the cross-reactivities of antibodies, such techniques are widely used for serum/plasma 1,25(OH)2D quantification. An accurate method is required for the determination of the 1,25(OH)2D status. METHODS We designed a serum/plasma 1,25(OH)2D quantification method using LC-MS/MS. Immunoaffinity extraction (IE) and the recently developed Cookson-type reagent 4-(4'-dimethylaminophenyl)-1,2,4-triazoline-3,5-dione (DAPTAD) were used for sample preparation and derivatization, respectively. Analytical and pre-analytical validations were performed. Serum 1,25(OH)2D3 concentrations were determined in 232 healthy Japanese individuals. RESULTS The intra- and inter-assay CVs for 1,25(OH)2D3 were 5.2% and 7.0%, respectively. The limit of quantification for 1,25(OH)2D3 was 7.1pg/ml. Rheumatoid factor (RF) at concentrations below 517IU/ml did not affect serum 1,25(OH)2D analysis. No significant differences were observed for various blood collection tubes, repeated freeze-thaw cycles, whole blood standing time, or serum storage time. A strong correlation between LC-MS/MS and radioimmunoassay (RIA) was observed (r=0.786), but serum 1,25(OH)2D concentrations obtained from RIA were 2-fold higher than those obtained from LC-MS/MS. Serum 1,25(OH)2D3 concentrations by LC-MS/MS were 18.7-53.9pg/ml. CONCLUSION A highly sensitive and selective LC-MS/MS-based serum/plasma 1,25(OH)2D quantification method was developed using IE and DAPTAD derivatization. This method will enable the accurate determination of serum/plasma 1,25(OH)2D concentrations in the clinical setting.
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Affiliation(s)
- Takayuki Ishige
- Division of Laboratory Medicine, Chiba University Hospital, Chiba, Japan.
| | - Mamoru Satoh
- Division of Clinical Mass Spectrometry, Chiba University Hospital, Chiba, Japan
| | - Shoujiro Ogawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Motoi Nishimura
- Division of Laboratory Medicine, Chiba University Hospital, Chiba, Japan
| | | | - Tatsuya Higashi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Fumio Nomura
- Division of Clinical Mass Spectrometry, Chiba University Hospital, Chiba, Japan
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Chouinard CD, Cruzeiro VWD, Beekman CR, Roitberg AE, Yost RA. Investigating Differences in Gas-Phase Conformations of 25-Hydroxyvitamin D3 Sodiated Epimers using Ion Mobility-Mass Spectrometry and Theoretical Modeling. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:1497-1505. [PMID: 28417307 DOI: 10.1007/s13361-017-1673-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 03/26/2017] [Accepted: 03/28/2017] [Indexed: 06/07/2023]
Abstract
Drift tube ion mobility coupled with mass spectrometry was used to investigate the gas-phase structure of 25-hydroxyvitamin D3 (25OHD3) and D2 (25OHD2) epimers, and to evaluate its potential in rapid separation of these compounds. Experimental results revealed two distinct drift species for the 25OHD3 sodiated monomer, whereas only one of these conformations was observed for its epimer (epi25OHD3). The unique species allowed 25OHD3 to be readily distinguished, and the same pattern was observed for 25OHD2 epimers. Theoretical modeling of 25OHD3 epimers identified energetically stable gas-phase structures, indicating that both compounds may adopt a compact "closed" conformation, but that 25OHD3 may also adopt a slightly less energetically favorable "open" conformation that is not accessible to its epimer. Calculated theoretical collision cross-sections for these structures agreed with experimental results to <2%. Experimentation indicated that additional energy in the ESI source (i.e., increased temperature, spray voltage) affected the ratio of 25OHD3 conformations, with the less energetically favorable "open" conformation increasing in relative intensity. Finally, LC-IM-MS results yielded linear quantitation of 25OHD3, in the presence of the epimer interference, at biologically relevant concentrations. This study demonstrates that ion mobility can be used in tandem with theoretical modeling to determine structural differences that contribute to drift separation. These separation capabilities provide potential for rapid (<60 ms) identification of 25OHD3 and 25OHD2 in mixtures with their epimers. Graphical Abstract ᅟ.
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Affiliation(s)
| | - Vinícius Wilian D Cruzeiro
- Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
- CAPES Foundation, Ministry of Education of Brazil, Brasília, DF, 70040-020, Brazil
| | | | - Adrian E Roitberg
- Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA
| | - Richard A Yost
- Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA.
- Southeast Center for Integrated Metabolomics (SECIM), University of Florida, Gainesville, FL, USA.
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Improved accuracy of an tandem liquid chromatography–mass spectrometry method measuring 24R,25-dihydroxyvitamin D3 and 25-hydroxyvitamin D metabolites in serum using unspiked controls and its application to determining cross-reactivity of a chemiluminescent microparticle immunoassay. J Chromatogr A 2017; 1497:102-109. [DOI: 10.1016/j.chroma.2017.03.058] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 02/11/2017] [Accepted: 03/19/2017] [Indexed: 11/21/2022]
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Lehmann S, Brede C, Lescuyer P, Cocho JA, Vialaret J, Bros P, Delatour V, Hirtz C. Clinical mass spectrometry proteomics (cMSP) for medical laboratory: What does the future hold? Clin Chim Acta 2017; 467:51-58. [DOI: 10.1016/j.cca.2016.06.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 05/30/2016] [Accepted: 06/01/2016] [Indexed: 01/08/2023]
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Bruns K, Mönnikes R, Lackner KJ. Quantitative determination of four immunosuppressants by high resolution mass spectrometry (HRMS). Clin Chem Lab Med 2017; 54:1193-200. [PMID: 26641969 DOI: 10.1515/cclm-2015-0863] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 10/28/2015] [Indexed: 11/15/2022]
Abstract
BACKGROUND Liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) utilizing triple-quadrupole instruments has been widely used for quantification of endogenous compounds, drugs or metabolites in clinical laboratories. In contrast, high-resolution mass spectrometry (HRMS) is typically used for compound identification due to its limited dynamic range. Recently HRMS instruments with enhanced linear dynamic range have become available. The aim of this study was to evaluate HRMS for fast quantitative applications in a clinical laboratory. METHODS A high throughput UPLC-TOF-MS assay for simultaneous quantification of cyclosporin A, tacrolimus, sirolimus and everolimus was developed. All immunosuppressants were analyzed as sodium adducts in TOF-only mode using an Agilent 6540 Q-TOF system. Extracted ion chromatograms of analytes and internal standards were created from full-scan data. The assay was evaluated and compared to an established LC-MS/MS assay according to CLSI recommendations. RESULTS The novel HRMS assay has a total run time of 3 min. The assay is linear in a clinical relevant concentration range for all four immunosupressants. Method correlations vs. established LC-MS/MS assay were between R2=0.99 and R2=0.97. Total coefficients of variation (CVT) ranges were 4.5%-6.4% (tacrolimus), 7.4%-8.0% (sirolimus), 8.0%-8.8% (everolimus) and 6.1%-7.4% (cyclosporine A) for three relevant concentration levels each. CONCLUSIONS High resolution TOF-MS and LC-MS/MS show equivalent quantitative performance for monitoring of cyclosporin A, tacrolimus, sirolimus and everolimus. HRMS has the potential to replace conventional LC-MS/MS in clinical laboratories because it simplifies assay development (no optimization of fragmentations and product ions necessary) and its full-scan data can provide additional information.
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Direct aqueous measurement of 25-hydroxyvitamin D levels in a cellular environment by LC-MS/MS using the novel chemical derivatization reagent MDBP. Anal Bioanal Chem 2017; 409:2705-2714. [DOI: 10.1007/s00216-017-0215-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 01/07/2017] [Accepted: 01/16/2017] [Indexed: 12/22/2022]
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Quantification of the 3α and 3β epimers of 25-hydroxyvitamin D 3 in dried blood spots by LC-MS/MS using artificial whole blood calibration and chemical derivatization. Talanta 2016; 165:398-404. [PMID: 28153274 DOI: 10.1016/j.talanta.2016.12.081] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 12/24/2016] [Accepted: 12/27/2016] [Indexed: 11/20/2022]
Abstract
While the biological function of the 3α epimer of 25-hydroxyvitamin D3 (25(OH)D3) remains unknown, its presence needs to be accurately captured and separated from the main 3β epimer, to avoid positive bias in vitamin D status analyses. Several recent LC-MS/MS assays for 25(OH)D3 successfully separate the 3α and 3β epimers by chromatography. Unfortunately, none of the existing LC-MS/MS assays, which utilize dried blood spots (DBS) as sampling/storage vessels, is able to quantify the individual epimers. DBS are often used for analysis of infant blood, however, and these samples are particularly likely to contain significant levels of interfering 3α epimer. Furthermore, proper calibration of DBS samples is much more difficult to achieve than for liquid serum or plasma samples. We addressed this important issue by creating an artificial vitamin D-free whole blood for calibration and then quantified 3α- and 3β-25(OH)D3 levels from DBS. After chemical derivatization, the vitamin D epimers were separated on a PFP column and concentrations determined by electrospray ionization LC-MS/MS on a triple quadrupole mass spectrometer. Calibration with artificial whole blood showed improved precision over standard addition (7.6 versus 31.5% RSD for 3β-25(OH)D3). The limits of quantification for 3β-25(OH)D3 and for 3α-25(OH)D3 were 1.0 and 0.1ng/mL, respectively. Excellent intra/interday precisions between 2.1 and 2.2% CV (intra) and 4.4-5.3% CV (inter) were established for 3β-25(OH)D3 and 3α-25(OH)D3. For 3β-25(OH)D3, only small concentration-independent bias and deviation of <3.3ng/mL were seen between serum LC-MS/MS and DBS-LC-MS/MS measurements; analyses of 3α-25(OH)D3 showed deviations of <0.8ng/mL in all experiments.
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Higashi T, Yokota M, Goto A, Komatsu K, Sugiura T, Ogawa S, Satoh M, Nomura F. A Method for Simultaneous Determination of 25-Hydroxyvitamin D3 and Its 3-Sulfate in Newborn Plasma by LC/ESI-MS/MS after Derivatization with a Proton-Affinitive Cookson-Type Reagent. ACTA ACUST UNITED AC 2016; 5:S0051. [PMID: 27656337 DOI: 10.5702/massspectrometry.s0051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Accepted: 08/01/2016] [Indexed: 11/23/2022]
Abstract
A method for the simultaneous determination of 25-hydroxyvitamin D3 [25(OH)D3] and its 3-sulfate [25(OH)D3S] in newborn plasma, which is expected to be helpful in the assessment of the vitamin D status, using stable isotope-dilution liquid chromatography/electrospray ionization-tandem mass spectrometry (LC/ESI-MS/MS) has been developed and validated. The plasma was pretreated based on the deproteinization and solid-phase extraction, then subjected to derivatization with 4-(4-dimethylaminophenyl)-1,2,4-triazoline-3,5-dione (DAPTAD). The derivatization enabled the accurate quantification of 25(OH)D3 without interference from 3-epi-25(OH)D3 and also facilitated the simultaneous determination of the two metabolites by LC/positive ESI-MS/MS. Quantification was based on the selected reaction monitoring with the characteristic fragmentation of the DAPTAD-derivatives during MS/MS. This method was reproducible (intra- and inter-assay relative standard deviations of 7.8% or lower for both metabolites) and accurate (analytical recovery, 95.4-105.6%). The limits of quantification were 1.0 ng/mL and 2.5 ng/mL for 25(OH)D3 and 25(OH)D3S, respectively, when using a 20-μL sample. The developed method was applied to the simultaneous determination of plasma 25(OH)D3 and 25(OH)D3S in newborns; it was recognized that the plasma concentration of 25(OH)D3S is significantly higher than that of 25(OH)D3, and preterm newborns have lower plasma 25(OH)D3S concentrations than full-term newborns.
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Affiliation(s)
- Tatsuya Higashi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Mai Yokota
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Ayaka Goto
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | | | | | - Shoujiro Ogawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Mamoru Satoh
- Divisions of Clinical Mass Spectrometry, Chiba University Hospital
| | - Fumio Nomura
- Divisions of Clinical Mass Spectrometry, Chiba University Hospital
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Satoh M, Ishige T, Ogawa S, Nishimura M, Matsushita K, Higashi T, Nomura F. Development and validation of the simultaneous measurement of four vitamin D metabolites in serum by LC–MS/MS for clinical laboratory applications. Anal Bioanal Chem 2016; 408:7617-7627. [DOI: 10.1007/s00216-016-9821-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 07/06/2016] [Accepted: 07/21/2016] [Indexed: 11/30/2022]
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Kauhanen D, Sysi-Aho M, Koistinen KM, Laaksonen R, Sinisalo J, Ekroos K. Development and validation of a high-throughput LC-MS/MS assay for routine measurement of molecular ceramides. Anal Bioanal Chem 2016; 408:3475-83. [PMID: 26922344 DOI: 10.1007/s00216-016-9425-z] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/09/2016] [Accepted: 02/15/2016] [Indexed: 12/16/2022]
Abstract
Monitoring the levels of the ceramides (Cer) d18:1/16:0, Cer d18:1/18:0, Cer d18:1/24:0, and Cer d18:1/24:1 and ratios thereof in human plasma empowers the prediction of fatal outcome of coronary artery disease (CAD). We describe a validated liquid chromatography-tandem mass spectrometry (LC-MS/MS) methodology for clinical-scaled measurement of the four distinct ceramides. Rapid plasma precipitation was accomplished in 96-well format. Excellent extraction recoveries in the range of 98-109% were achieved for each ceramide. Addition of corresponding D7-labeled ceramide standards facilitated precise quantification of each plasma ceramide species utilizing a novel short 5-min LC-MS/MS method. Neither matrix interference nor carryover was observed. Robust intra- and inter-assay accuracy and precision <15% at five different concentrations were obtained. Linear calibration lines with regressions, R(2) > 0.99, were achieved for all analytes. Short-term bench top, long-term plasma, and extract stability demonstrated that the distinct ceramides were stable in the conditions evaluated. The validity of the methodology was demonstrated by determining the precise ceramide concentrations in a small CAD case-control study. Thus, our LC-MS/MS methodology features simple sample preparation and short analysis time for accurate quantification of Cer d18:1/16:0, Cer d18:1/18:0, Cer d18:1/24:0, and Cer d18:1/24:1, designed for routine analysis.
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Affiliation(s)
| | | | | | | | - Juha Sinisalo
- Heart and Lung Center, Helsinki University Hospital, 00029 HUS, Helsinki, Finland
| | - Kim Ekroos
- Zora Biosciences, Biologinkuja 1, 02150, Espoo, Finland.
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Jee D, Kang S, Yuan C, Cho E, Arroyo JG. Serum 25-Hydroxyvitamin D Levels and Dry Eye Syndrome: Differential Effects of Vitamin D on Ocular Diseases. PLoS One 2016; 11:e0149294. [PMID: 26894581 PMCID: PMC4760949 DOI: 10.1371/journal.pone.0149294] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 01/29/2016] [Indexed: 12/15/2022] Open
Abstract
Purpose To investigate associations between serum 25-hydroxyvitamin D levels and dry eye syndrome (DES), and to evaluate the differential effect of vitamin D on ocular diseases including age-related macular disease (AMD), diabetic retinopathy (DR), cataract, and DES. Methods A total of 16,396 participants aged >19 years were randomly selected from the Korean National Health and Nutrition Examination Survey. All participants participated in standardized interviews, blood 25-hydroxyvitamin D level evaluations, and comprehensive ophthalmic examinations. DES was defined by a history of clinical diagnosis of dry eyes by a physician. The association between vitamin D and DES was compared to the associations between vitamin D and AMD, DR, cataract, and DES from our previous studies. Results The odds of DES non-significantly decreased as the quintiles of serum 25-hydroxyvitamin D levels increased (quintile 5 versus 1, OR = 0.85, 95%CI: 0.55–1.30, P for trend = 0.076) after adjusting for potential confounders including age, sex, hypertension, diabetes, smoking status, and sunlight exposure times. The relative odds of DES (OR = 0.70, 95% CI: 0.30–1.64) and cataract (OR = 0.76, 95% CI: 0.59–0.99) were relatively high, while those of DR (OR = 0.37, 95% CI: 0.18–0.76) and late AMD (OR = 0.32, 95% CI: 0.12–0.81) were lower in men. Conclusions The present study does not support an association between serum 25-hydroxyvitamin D levels and DES. The preventive effect of serum 25-hydroxyvitamin D may be more effective for DR and late AMD than it is for cataract and DES.
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Affiliation(s)
- Donghyun Jee
- Department of Ophthalmology and Visual Science, College of Medicine, Catholic University of Korea, Suwon, Korea
- Department of Epidemiology and Biostatistics, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
| | - Seungbum Kang
- Department of Ophthalmology and Visual Science, Daejeon St. Mary’s Hospital, College of Medicine, Catholic University of Korea, Daejeon, Korea
- * E-mail:
| | - Changzheng Yuan
- Department of Nutrition and Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
| | - Eunyoung Cho
- Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Department of Dermatology, The Warren Alpert Medical School of Brown University, Providence, Rhode Island, United States of America
| | - Jorge G. Arroyo
- Department of Ophthalmology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, United States of America
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Simultaneous quantitative analysis of nine vitamin D compounds in human blood using LC-MS/MS. Bioanalysis 2016; 8:397-411. [PMID: 26893268 DOI: 10.4155/bio.15.260] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
AIM It has been suggested that each member of the family of vitamin D compounds may have different function(s). Therefore, selective quantification of each compound is important in clinical research. MATERIALS & METHODS Development and validation attempts of a simultaneous determination method of 12 vitamin D compounds in human blood using precolumn derivatization followed by LC-MS/MS is described. Internal standard calibration with 12 stable isotope labeled analogs was used to correct for matrix effects in MS detector. RESULTS & CONCLUSION Nine vitamin D compounds were quantifiable in blood samples with detection limits within femtomole levels. Serum (compared with plasma) was found to be a more suitable sample type, and protein precipitation (compared with saponification) a more effective extraction method for vitamin D assay.
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Chemotyping the distribution of vitamin D metabolites in human serum. Sci Rep 2016; 6:21080. [PMID: 26864540 PMCID: PMC4750036 DOI: 10.1038/srep21080] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 01/18/2016] [Indexed: 12/03/2022] Open
Abstract
Most studies examining the relationships between vitamin D and disease or health focus on the main 25-hydroxyvitamin D3 (25(OH)D3) metabolite, thus potentially overlooking contributions and dynamic effects of other vitamin D metabolites, the crucial roles of several of which have been previously demonstrated. The ideal assay would determine all relevant high and low-abundant vitamin D species simultaneously. We describe a sensitive quantitative assay for determining the chemotypes of vitamin D metabolites from serum after derivatisation and ultra-high performance liquid chromatography-electrospray ionisation-tandem mass spectrometry (UHPLC-ESI-MS/MS). We performed a validation according to the ‘FDA Guidance for Industry Bioanalytical Method Validation’. The proof-of-concept of the method was then demonstrated by following the metabolite concentrations in patients with chronic liver diseases (CLD) during the course of a vitamin D supplementation study. The new quantitative profiling assay provided highly sensitive, precise and accurate chemotypes of the vitamin D metabolic process rather than the usually determined 25(OH)D3 concentrations.
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Jenkinson C, Taylor AE, Hassan-Smith ZK, Adams JS, Stewart PM, Hewison M, Keevil BG. High throughput LC-MS/MS method for the simultaneous analysis of multiple vitamin D analytes in serum. J Chromatogr B Analyt Technol Biomed Life Sci 2016; 1014:56-63. [PMID: 26874878 DOI: 10.1016/j.jchromb.2016.01.049] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 01/28/2016] [Accepted: 01/30/2016] [Indexed: 10/22/2022]
Abstract
Recent studies suggest that vitamin D-deficiency is linked to increased risk of common human health problems. To define vitamin D 'status' most routine analytical methods quantify one particular vitamin D metabolite, 25-hydroxyvitamin D3 (25OHD3). However, vitamin D is characterized by complex metabolic pathways, and simultaneous measurement of multiple vitamin D metabolites may provide a more accurate interpretation of vitamin D status. To address this we developed a high-throughput liquid chromatography-tandem mass spectrometry (LC-MS/MS) method to analyse multiple vitamin D analytes, with particular emphasis on the separation of epimer metabolites. A supportive liquid-liquid extraction (SLE) and LC-MS/MS method was developed to quantify 10 vitamin D metabolites as well as separation of an interfering 7α-hydroxy-4-cholesten-3-one (7αC4) isobar (precursor of bile acid), and validated by analysis of human serum samples. In a cohort of 116 healthy subjects, circulating concentrations of 25-hydroxyvitamin D3 (25OHD3), 3-epi-25-hydroxyvitamin D3 (3-epi-25OHD3), 24,25-dihydroxyvitamin D3 (24R,25(OH)2D3), 1,25-dihydroxyvitamin D3 (1α,25(OH)2D3), and 25-hydroxyvitamin D2 (25OHD2) were quantifiable using 220μL of serum, with 25OHD3 and 24R,25(OH)2D3 showing significant seasonal variations. This high-throughput LC-MS/MS method provides a novel strategy for assessing the impact of vitamin D on human health and disease.
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Affiliation(s)
- Carl Jenkinson
- Institute for Metabolism and Systems Research, The University of Birmingham, Birmingham B15 2TT, UK
| | - Angela E Taylor
- Institute for Metabolism and Systems Research, The University of Birmingham, Birmingham B15 2TT, UK
| | - Zaki K Hassan-Smith
- Institute for Metabolism and Systems Research, The University of Birmingham, Birmingham B15 2TT, UK
| | - John S Adams
- Orthopaedic Surgery, Medicine and Molecular, Cell & Developmental Biology, UCLA 615 Charles E. Young Dr. South, Rm. 410E, Los Angeles 90095, CA, USA
| | - Paul M Stewart
- Faculty of Medicine and Health, University of Leeds, Leeds LS2 9NL
| | - Martin Hewison
- Institute for Metabolism and Systems Research, The University of Birmingham, Birmingham B15 2TT, UK
| | - Brian G Keevil
- Department of Clinical Biochemistry, University Hospital South Manchester NHS Foundation Trust, Manchester, UK Manchester Academic Health Science Centre, University Hospital South Manchester, The University of Manchester, Manchester, M13 9NT, UK
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