1
|
Li J, Chen C, Sun X, Hu Z, Wu C, Gao Q, Ying G. A new method based on dispersive liquid-liquid microextraction for fat-soluble vitamin determination in serum by LC-MS/MS. Biomed Chromatogr 2023; 37:e5666. [PMID: 37139579 DOI: 10.1002/bmc.5666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 04/18/2023] [Accepted: 04/25/2023] [Indexed: 05/05/2023]
Abstract
A green and inexpensive pretreatment known as dispersive liquid-liquid microextraction (DLLME) was developed in this assay coupled with the LC-MS/MS method for routine analysis of fat soluble vitamins (FSVs). The technique was performed with methanol as the dispersive solvent and dichloromethane as the extraction solvent. The extraction phase containing FSVs was evaporated to dryness and reconstituted in a mixture of acetonitrile and water. The influence variables concerning the DLLME procedure were optimized. After that, the method was investigated for its applicability in LC-MS/MS analysis. As a result, the parameters were settled for the optimal conditions during the DLLME process. A cheap and lipid-free substance was found as an alternative to serum to eliminate the matrix effect while preparing the calibrators. The method validation indicated that it was suitable for determining FSVs in serum. Moreover, this method was applied successfully to determine serum samples, which was consistent with the literature. In summary, the DLLME method developed in this report was reliable and more cost-effective than the traditional LC-MS/MS method, and could be applied in the future.
Collapse
Affiliation(s)
- Jufang Li
- College of Pharmacy, Zhejiang University of Technology, Hangzhou, Zhejiang, China
- Zhejiang Biozon Medical Technology Co. Ltd, Hangzhou, Zhejiang, China
| | - Congyan Chen
- Zhejiang Biozon Medical Technology Co. Ltd, Hangzhou, Zhejiang, China
| | - Xingchao Sun
- Zhejiang Biozon Medical Technology Co. Ltd, Hangzhou, Zhejiang, China
| | - Zhineng Hu
- Zhejiang Biozon Medical Technology Co. Ltd, Hangzhou, Zhejiang, China
| | - Chaochao Wu
- Zhejiang Biozon Medical Technology Co. Ltd, Hangzhou, Zhejiang, China
| | - Qiang Gao
- Zhejiang Biozon Medical Technology Co. Ltd, Hangzhou, Zhejiang, China
| | - Guoqing Ying
- College of Pharmacy, Zhejiang University of Technology, Hangzhou, Zhejiang, China
| |
Collapse
|
2
|
Strategies for effective development of ultra-sensitive LC–MS/MS assays: application to a novel STING agonist. Bioanalysis 2020; 12:467-484. [DOI: 10.4155/bio-2020-0038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background: The continual need for the development and validation of ultra-sensitive (low pg/ml) LC–MS/MS assays in the pharmaceutical industry is largely driven by the ultra-low analyte exposure or very low sample volume. Methodology: Strategies and systematic approaches for sensitivity enhancement are provided which cover all aspects of a LC–MS/MS bioanalysis. A case study where such strategies were applied for the validation of a 5.0 pg/ml assay for a STING agonist is discussed. Conclusion: Analytical protocols were developed to extract analytes from large volume of plasma samples (600 and 400 μl) with high throughput. The guidance provided in this publication can serve as a resource to influence LC–MS/MS method development activities.
Collapse
|
3
|
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]
|
4
|
Contractor P, Gandhi A, Solanki G, Shah PA, Shrivastav PS. Determination of ergocalciferol in human plasma after Diels-Alder derivatization by LC-MS/MS and its application to a bioequivalence study. J Pharm Anal 2017; 7:417-422. [PMID: 29404069 PMCID: PMC5790750 DOI: 10.1016/j.jpha.2017.05.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 05/12/2017] [Accepted: 05/19/2017] [Indexed: 12/17/2022] Open
Abstract
An accurate, sensitive and selective method is developed for determination of ergocalciferol (vitamin D2) in human plasma using LC-MS/MS. After liquid-liquid extraction with n-hexane, ergocalciferol was derivatized by reacting with 4-phenyl-1,2,4-triazoline-3,5-dione (PTAD), a strong dienophile based on Diels-Alder reaction. Ergocalciferol and its deuterated internal standard, ergocalciferol-d6, were analyzed on X Select CSH C18 (100 mm×4.6 mm, 2.5 µm) column using acetonitrile and 0.1% (v/v) formic acid in water containing 0.14% methylamine within 6.0 min under gradient elution mode. Tandem mass spectrometry in positive ionization mode was used to quantify ergocalciferol by multiple reaction monitoring (MRM). Entire data processing was done using Watson LIMS™ software which provided excellent data integrity and high throughput with improved operational efficiency. The major advantage of this method includes higher sensitivity (0.10 ng/mL), superior extraction efficiency (≥83%) and small sample volume (100 µL) for processing. The method was linear in the concentration range of 0.10-100 ng/mL for ergocalciferol. The intra-batch and inter-batch accuracy and precision (% CV) values varied from 97.3% to 109.0% and 1.01% to 5.16%, respectively. The method was successfully applied to support a bioequivalence study of 1.25 mg ergocalciferol capsules in 12 healthy subjects.
Collapse
Affiliation(s)
- Pritesh Contractor
- Department of Chemistry, Kadi Sarva Vishwavidyalaya, Gandhinagar, Ahmedabad-382015, India
- Bioanalytical Department, Veeda Clinical Research, Ahmedabad-387810, India
| | - Abhishek Gandhi
- Bioanalytical Department, Veeda Clinical Research, Ahmedabad-387810, India
| | - Gajendra Solanki
- Bioanalytical Department, Veeda Clinical Research, Ahmedabad-387810, India
| | - Priyanka A. Shah
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, India
| | - Pranav S. Shrivastav
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad 380009, India
- Corresponding author.
| |
Collapse
|
5
|
Nikooyeh B, Samiee SM, Farzami MR, Alavimajd H, Zahedirad M, Kalayi A, Shariatzadeh N, Boroumand N, Golshekan E, Gholamian Y, Neyestani TR. Harmonization of serum 25-hydroxycalciferol assay results from high-performance liquid chromatography, enzyme immunoassay, radioimmunoassay, and immunochemiluminescence systems: A multicenter study. J Clin Lab Anal 2017; 31. [PMID: 28169461 DOI: 10.1002/jcla.22117] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 11/21/2016] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Remarkable disagreement among different systems of 25-hydroxy vitamin D 25(OH)D assay makes decision making for both clinical and community interventions very difficult. This study aimed to harmonize the results obtained from different 25(OH)D assay systems. METHODS A total of 275 serum samples were analyzed for 25(OH)D using DIAsource-enzyme immunoassay (EIA), DIAsource-radioimmunoassay (RIA), Roche-electrochemiluminescence (ECL), Diasorin-chemiluminescent immunoassay (CLIA), and high-performance liquid chromatography (HPLC), as the reference method. Serum intact parathyroid hormone (iPTH) was also measured in all samples. Between-system agreement and harmonization were evaluated using Bland-Altman analysis, receiver operating characteristic (ROC), and regression analysis. RESULTS Mean serum 25(OH)D concentrations and frequency distribution of vitamin D status showed a significant difference among the studied systems (P<.001 for both). Serum 25(OH)D assay results from all systems correlated with those from HPLC. As compared with HPLC, ECL showed a positive bias (+3.8 nmol/L), whereas CLIA had a negative bias (-11.9 nmol/L). Both EIA and RIA showed a more or less similar positive bias (8.0 and 8.1 nmol/L, respectively). Using serum iPTH-based 25(OH)D cutoff points, only ECL results became comparable to and without significant difference with HPLC. However, when system-specific cutoffs were defined based on HPLC results using regression equations, mean 25(OH)D and frequency distribution of vitamin D status were more harmonized compared with the other methods. CONCLUSION Our findings showed that with adjustment of circulating 25(OH)D based on HPLC, frequency distribution of vitamin D status, as judged by different methods, can be well harmonized with no statistically significant inter-system difference.
Collapse
Affiliation(s)
- Bahareh Nikooyeh
- Laboratory of Nutrition Research, National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Siamak M Samiee
- Health Reference Laboratories (HRL), Iran Ministry of Health, Tehran, Iran
| | - Marjan R Farzami
- Health Reference Laboratories (HRL), Iran Ministry of Health, Tehran, Iran
| | - Hamid Alavimajd
- Department of Biostatistics, Faculty of Paramedicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maliheh Zahedirad
- Laboratory of Nutrition Research, National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Kalayi
- Laboratory of Nutrition Research, National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nastaran Shariatzadeh
- Laboratory of Nutrition Research, National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nasrin Boroumand
- Department of Biostatistics, Faculty of Paramedicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Elham Golshekan
- Health Reference Laboratories (HRL), Iran Ministry of Health, Tehran, Iran
| | - Yalda Gholamian
- Health Reference Laboratories (HRL), Iran Ministry of Health, Tehran, Iran
| | - Tirang R Neyestani
- Laboratory of Nutrition Research, National Nutrition and Food Technology Research Institute and Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| |
Collapse
|
6
|
On-line SPE sample treatment as a tool for method automatization and detection limits reduction: Quantification of 25-hydroxyvitamin D3/D2. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1043:219-227. [DOI: 10.1016/j.jchromb.2016.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 08/23/2016] [Accepted: 10/07/2016] [Indexed: 11/17/2022]
|
7
|
|
8
|
Two-dimensional liquid chromatography coupled to tandem mass spectrometry for vitamin D metabolite profiling including the C3-epimer-25-monohydroxyvitamin D3. J Chromatogr A 2016; 1451:50-57. [DOI: 10.1016/j.chroma.2016.05.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Revised: 04/18/2016] [Accepted: 05/02/2016] [Indexed: 11/15/2022]
|
9
|
Jensen ME, Ducharme FM, Théorêt Y, Bélanger AS, Delvin E. Assessing vitamin D nutritional status: Is capillary blood adequate? Clin Chim Acta 2016; 457:59-62. [PMID: 27018135 DOI: 10.1016/j.cca.2016.03.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 02/21/2016] [Accepted: 03/22/2016] [Indexed: 12/19/2022]
Abstract
BACKGROUND Venous blood is the usual sample for measuring various biomarkers, including 25-hydroxyvitamin D (25OHD). However, it can prove challenging in infants and young children. Hence the finger-prick capillary collection is an alternative, being a relatively simple procedure perceived to be less invasive. We elected to validate the use of capillary blood sampling for 25OHD quantification by liquid chromatography tandem-mass spectrometry (LC/MS-MS). METHODS Venous and capillary blood samples were simultaneously collected from 15 preschool-aged children with asthma 10days after receiving 100,000IU of vitamin-D3 or placebo and 20 apparently healthy adult volunteers. 25OHD was measured by an in-house LC/MS-MS method. RESULTS The venous 25OHD values varied between 23 and 255nmol/l. The venous and capillary blood total 25OHD concentrations highly correlated (r(2)=0.9963). The mean difference (bias) of capillary blood 25OHD compared to venous blood was 2.0 (95% CI: -7.5, 11.5) nmol/l. CONCLUSION Our study demonstrates excellent agreement with no evidence of a clinically important bias between venous and capillary serum 25OHD concentrations measured by LC/MS-MS over a wide range of values. Under those conditions, capillary blood is therefore adequate for the measurement of 25OHD.
Collapse
Affiliation(s)
- M E Jensen
- Centre for Asthma and Respiratory Diseases, School of Biomedical Sciences, School of Medicine and Public Health, University of Newcastle, Callaghan, Australia
| | - F M Ducharme
- Departments of Pediatrics and Social and Preventive Medicine, University of Montreal, Canada; Clinical Research and Knowledge Transfer Unit, Research Centre, CHU Ste-Justine, Montreal, Canada
| | - Y Théorêt
- Clinical Pharmacology Unit, Department of Clinical Biochemistry, CHU Ste-Justine, Canada; Department of Pharmacology, University of Montreal, Canada
| | - A-S Bélanger
- Department of Clinical Biochemistry, CHU Ste-Justine, Canada
| | - E Delvin
- Gatroenterology, Hepatology & Nutrition Division, CHU Ste-Justine Research Centre, University of Montreal, Canada.
| |
Collapse
|
10
|
Le Goff C, Cavalier E, Souberbielle JC, González-Antuña A, Delvin E. Measurement of circulating 25-hydroxyvitamin D: A historical review. Pract Lab Med 2015; 2:1-14. [PMID: 28932799 PMCID: PMC5597717 DOI: 10.1016/j.plabm.2015.04.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 03/24/2015] [Accepted: 04/16/2015] [Indexed: 11/26/2022] Open
Abstract
The constantly increasing requests for the measurement of serum 25-hydroxyvitamin D over the last years has led reagent manufacturers to market different automated and semi-automated methods, that being unfortunately not fully harmonized, yield different results. Liquid chromatography coupled to tandem mass spectrometry (LC/MS2) has more recently been introduced. This approach allows the distinction between the two forms of 25-hydroxyvitamin D and to measure other metabolites. This approach also requires harmonization to curtail the differences between the different analytical methods. To meet this requirement, the American National Institutes of Health (NIH), the Centre for Disease Control and Prevention (CDC) in Atlanta, the National Institute of Standards and Technology (NIST) and the vitamin D Reference laboratory of Ghent University have pooled their expertise to develop a standardization program. This article reviews the main elements and the difficulties of the automated and semi-automated methods for 25-hydroxyvitamin D, from sample preparation to the analytical phase, as well as those related to mass spectrometry. It also emphasizes the need for standardization to better define the clinical decision thresholds of vitamin D nutritional status.
Collapse
Affiliation(s)
- C. Le Goff
- Service de Chimie Clinique, CHU de Liège, Belgium
| | - E. Cavalier
- Service de Chimie Clinique, CHU de Liège, Belgium
| | - J.-C. Souberbielle
- Service des Explorations Fonctionnelles Hôpital Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | | | - E. Delvin
- Centre de Recherche, CHU Sainte-Justine, 3175 Côte Sainte-Catherine, Montréal, Québec, Canada H3T 1C5
| |
Collapse
|
11
|
Meunier C, Montérémal J, Faure P, Ducros V. Four years of LC–MS/MS method for quantification of 25-hydroxyvitamin D (D2+D3) for clinical practice. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 989:54-61. [DOI: 10.1016/j.jchromb.2015.02.040] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 02/07/2015] [Accepted: 02/28/2015] [Indexed: 01/29/2023]
|
12
|
Volmer DA, Mendes LRBC, Stokes CS. Analysis of vitamin D metabolic markers by mass spectrometry: current techniques, limitations of the "gold standard" method, and anticipated future directions. MASS SPECTROMETRY REVIEWS 2015; 34:2-23. [PMID: 24318020 DOI: 10.1002/mas.21408] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 07/18/2013] [Accepted: 07/18/2013] [Indexed: 05/10/2023]
Abstract
Vitamin D compounds belong to a group of secosteroids, which occur naturally as vitamin D3 in mammals and D2 in plants. Vitamin D is vital for bone health but recent studies have shown a much wider role in the pathologies of diseases such as diabetes, cancer, autoimmune, neurodegenerative, mental and cardiovascular diseases. Photosynthesis of vitamin D in the human skin and subsequent hepatic and renal metabolism generate a wide range of transformation products occurring over a large dynamic range spanning from picomolar to nanomolar levels. This necessitates selective and sensitive analytical methods to quantitatively capture these low concentration levels in relevant tissues such as blood. Ideally, vitamin D assessment would be performed using a universal and standardized analytical method available to clinical laboratories that provides reliable and accurate quantitative results for all relevant vitamin D metabolites with sufficiently high throughput. At present, LC-MS/MS assays are the most promising techniques for vitamin D analysis. The present review focuses on developments in mass spectrometry methodologies of the past 12 years. It will highlight detrimental influences of the biological matrix, epimer contributions, pitfalls of specific mass spectrometry data acquisition routines (in particular multiple reaction monitoring, MRM), influence of ionization source, derivatization reactions, inter-laboratory comparisons on precision, accuracy, and application range of vitamin D metabolites.
Collapse
Affiliation(s)
- Dietrich A Volmer
- Institute of Bioanalytical Chemistry, Saarland University, Saarbrücken, Germany
| | | | | |
Collapse
|
13
|
Abstract
The occurrence of vitamin D deficiency has become an issue of serious concern in the worldwide population. As a result numerous analytical methods have been developed, for a variety of matrices, during the last few years to measure vitamin D analogs and metabolites. This review employs a comprehensive search of all vitamin D methods developed during the last 5 years for all applications, using ISI Web of Science(®), Scifinder(®), Science Direct, Scopus and PubMed. Particular emphasis is given to sample-preparation methods and the different forms of vitamin D measured across different fields of applications such as biological fluids, food and pharmaceutical preparations. This review compares and critically evaluates a wide range of approaches and methods, and hence it will enable readers to access developments across a number of applications and to select or develop the optimal analytical method for vitamin D for their particular application.
Collapse
|
14
|
Sandhu JK, Auluck J, Ng LL, Jones DJL. Improved analysis of vitamin D metabolites in plasma using liquid chromatography tandem mass spectrometry, and its application to cardiovascular research. Biomed Chromatogr 2014; 28:913-7. [DOI: 10.1002/bmc.3208] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Jatinderpal K. Sandhu
- Department of Cardiovascular Sciences and NIHR Leicester Cardiovascular Biomedical Research Unit; Glenfield Hospital; Leicester LE3 9QP UK
| | - Janica Auluck
- Department of Cardiovascular Sciences and NIHR Leicester Cardiovascular Biomedical Research Unit; Glenfield Hospital; Leicester LE3 9QP UK
| | - Leong L. Ng
- Department of Cardiovascular Sciences and NIHR Leicester Cardiovascular Biomedical Research Unit; Glenfield Hospital; Leicester LE3 9QP UK
| | - Donald J. L. Jones
- Department of Cancer Studies and Molecular Medicine, Leicester Royal Infirmary; University of Leicester; Leicester LE2 7LX UK
| |
Collapse
|
15
|
Abstract
Currently, chromatography (GC but more commonly HPLC) is the analytical method of choice for several hormones, either because the immunoassays suffer from extensive crossreactivity or because chromatography permits simultaneous measurements of hormones. However, sometimes the conventional detection systems with HPLC methods do not meet desired specificity. With the increase of robust and affordable LC–MS/MS systems, the next step forward in specificity was taken. LC–MS/MS is rapidly being incorporated in the endocrine laboratories. To be useful in the clinical diagnostic practice, it is of utmost importance that methods are both analytically and clinically vaidated, as until now, the majority of applications of LC–MS/MS in the clinical laboratories are ‘home-made’ methods, therefore special case must be taken. This review aims to focus on Clinical and Laboratory Standards Institute or comparable validated LC–MS/MS methods for targeted hormone analysis used for diagnostic purposes in human samples, published in the last 5 years.
Collapse
|
16
|
Abro K, Memon N, Bhanger MI, Abro S, Perveen S, Lagharì AH. Determination of Vitamins E, D3, and K1 in Plasma by Liquid Chromatography-Atmospheric Pressure Chemical Ionization-Mass Spectrometry Utilizing a Monolithic Column. ANAL LETT 2013. [DOI: 10.1080/00032719.2013.831424] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
17
|
Plíšek J, Krčmová LK, Aufartová J, Morales TV, Esponda SM, Oros R, Kasalová E, Santana-Rodriguez JJ, Sobotka L, Solich P, Solichová D. New approach for the clinical monitoring of 25-hydroxyvitamin D3
and 25-hydroxyvitamin D2
by ultra high performance liquid chromatography with MS/MS based on the standard reference material 972. J Sep Sci 2013; 36:3702-8. [DOI: 10.1002/jssc.201300553] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 09/10/2013] [Accepted: 09/23/2013] [Indexed: 01/18/2023]
Affiliation(s)
- Jiří Plíšek
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University; Heyrovského; Hradec Králové Czech Republic
- III. Internal Gerontometabolic Clinic; University Hospital; Sokolská; Hradec Králové Czech Republic
| | - Lenka Kujovská Krčmová
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University; Heyrovského; Hradec Králové Czech Republic
- III. Internal Gerontometabolic Clinic; University Hospital; Sokolská; Hradec Králové Czech Republic
| | - Jana Aufartová
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University; Heyrovského; Hradec Králové Czech Republic
- III. Internal Gerontometabolic Clinic; University Hospital; Sokolská; Hradec Králové Czech Republic
| | - Tanausú V. Morales
- Department of Chemistry; University of Las Palmas de Gran Canaria; Campus de Tafira; Las Palmas de GC Spain
| | - Sarah M. Esponda
- Department of Chemistry; University of Las Palmas de Gran Canaria; Campus de Tafira; Las Palmas de GC Spain
| | - Roman Oros
- Shimadzu Austria; Laaer Strasse Korneuburg Austria
| | - Eva Kasalová
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University; Heyrovského; Hradec Králové Czech Republic
- III. Internal Gerontometabolic Clinic; University Hospital; Sokolská; Hradec Králové Czech Republic
| | - Jose J. Santana-Rodriguez
- Department of Chemistry; University of Las Palmas de Gran Canaria; Campus de Tafira; Las Palmas de GC Spain
| | - Luboš Sobotka
- III. Internal Gerontometabolic Clinic; University Hospital; Sokolská; Hradec Králové Czech Republic
| | - Petr Solich
- Department of Analytical Chemistry; Faculty of Pharmacy; Charles University; Heyrovského; Hradec Králové Czech Republic
| | - Dagmar Solichová
- III. Internal Gerontometabolic Clinic; University Hospital; Sokolská; Hradec Králové Czech Republic
| |
Collapse
|
18
|
Solid-phase extraction based on hydrophilic interaction liquid chromatography with acetone as eluent for eliminating matrix effects in the analysis of biological fluids by LC-MS. Anal Bioanal Chem 2013; 406:401-7. [DOI: 10.1007/s00216-013-7281-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 07/12/2013] [Accepted: 07/29/2013] [Indexed: 11/25/2022]
|
19
|
Owen LJ, Keevil BG. Supported liquid extraction as an alternative to solid phase extraction for LC-MS/MS aldosterone analysis? Ann Clin Biochem 2013; 50:489-91. [PMID: 23897110 DOI: 10.1177/0004563213480758] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Supported liquid extraction (SLE) techniques are relatively new compared to other sample preparation approaches such as solid phase extraction (SPE), liquid-liquid extraction (LLE) and protein precipitation (PPE). We investigated the use of SLE as an alternative to SPE for the liquid chromatography tandem mass spectrometry (LC-MS/MS) measurement of aldosterone. METHODS Samples (n = 83) were analysed by the routine method using SPE. The same samples were subsequently analysed using two different SLE 96-well plate devices (Thermo and Biotage) with methyl-tertiary butyl ether extraction. A direct comparison of the three extraction techniques on two different mass spectrometers was also performed. RESULTS Both results using SLE plates gave excellent agreement with the results from the SPE analysis. The area counts obtained with the Biotage plates were considerably higher than those obtained using the Thermo plate. CONCLUSIONS SLE is an acceptable alternative to SPE for the LC-MS/MS analysis of aldosterone. Using SLE reduces the time required for sample preparation.
Collapse
Affiliation(s)
- Laura J Owen
- Biochemistry Department, University Hospital of South Manchester, Manchester, UK.
| | | |
Collapse
|
20
|
Kottler R, Mank M, Hennig R, Müller-Werner B, Stahl B, Reichl U, Rapp E. Development of a high-throughput glycoanalysis method for the characterization of oligosaccharides in human milk utilizing multiplexed capillary gel electrophoresis with laser-induced fluorescence detection. Electrophoresis 2013; 34:2323-36. [PMID: 23716415 DOI: 10.1002/elps.201300016] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 04/17/2013] [Accepted: 04/19/2013] [Indexed: 12/29/2022]
Abstract
During the last decade, enormous progress regarding knowledge about composition and properties of human milk (HM) has been made. Besides nutrition, the three macro-nutrients: proteins, lipids, and carbohydrates combine a large variety of properties and functions. Especially, complex oligosaccharides emerge as important dietary factors during early life with multiple functions. The characterization of these HM oligosaccharides (HMOS) within the total carbohydrate fraction is prerequisite to understand the relationship between milk composition and biological effects. Therefore, extended studies of large donor cohorts and thus, new high-throughput glycoanalytical methods are needed. The developed method comprises sample preparation, as well as analysis of HMOS by multiplexed CGE with LIF detection (xCGE-LIF). Via a respective database the generated "fingerprints" (normalized electropherograms) could be used for structural elucidation of HMOS. The method was tested on HM samples from five different donors, partly sampled as a series of lactation time points. HMOS could be easily identified and quantified. Consequently, secretor and Lewis status of the donors could be determined, milk typing could be performed and quantitative changes could be monitored along lactation time course. The developed xCGE-LIF based "real" high-throughput HMOS analysis method enables qualitative and quantitative high-performance profiling of the total carbohydrate fraction composition of large sets of samples.
Collapse
Affiliation(s)
- Robert Kottler
- Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany
| | | | | | | | | | | | | |
Collapse
|
21
|
van den Ouweland JMW, Vogeser M, Bächer S. Vitamin D and metabolites measurement by tandem mass spectrometry. Rev Endocr Metab Disord 2013; 14:159-84. [PMID: 23539484 DOI: 10.1007/s11154-013-9241-0] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The prevalence of vitamin D deficiency in the general population has become a major public health problem. Vitamin D deficiency might have significant consequences not only to bone health but possibly to autoimmune-, infectious and cardiovascular disease. This has resulted in increased clinical testing for 25-hydroxyvitamin D (25(OH)D) in serum, as circulating 25(OH)D is regarded as the best indicator of adequate exposure to sunlight and dietary intake of vitamin D. There are reportedly over 50 vitamin D metabolites of which 25(OH)D and 1,25(OH)2D are well known to provide clinical information. More recently, there is increasing interest in measuring the C3-epimer of 25(OH)D, which has shown to contribute significantly to the 25(OH)D concentration, particularly in infant populations, and in 24,25(OH)2D, a major catabolite of 25(OH)D metabolism. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) is an analytical tool that allows the specific determination of all relevant vitamin D metabolites, with the potential of performing multiple analyte analysis in a single experimental setting, creating a vitamin D profile. This article reviews recent advances in the quantification of vitamin D metabolites using LC-MS/MS.
Collapse
|
22
|
Núñez O, Gallart-Ayala H, Martins CP, Lucci P, Busquets R. State-of-the-art in fast liquid chromatography–mass spectrometry for bio-analytical applications. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 927:3-21. [DOI: 10.1016/j.jchromb.2012.12.031] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 12/03/2012] [Accepted: 12/08/2012] [Indexed: 11/29/2022]
|
23
|
Fraser WD, Milan AM. Vitamin D assays: past and present debates, difficulties, and developments. Calcif Tissue Int 2013; 92:118-27. [PMID: 23314742 DOI: 10.1007/s00223-012-9693-3] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Accepted: 11/30/2012] [Indexed: 11/28/2022]
Abstract
Clinical interest in Vitamin D and its purported roles not only in calcium and bone metabolism but in several other medical conditions (diabetes, cardiovascular disease, multiple sclerosis, cancer, psychiatric disorders, neuro-muscular disease) has led to a surge in laboratory requests for 25 hydroxy vitamin D and 1,25 dihydroxy vitamin D measurement. Circulating 25 hydroxy vitamin D concentration is routinely used as the best indicator of vitamin D status, but measurement of other metabolites, especially the physiologically active 1,25 dihyroxy vitamin D, are of clinical value. Over the last 40 years the development of assays for vitamin D and its metabolites from early competitive binding assays through to immunoassay and liquid chromatography aligned to mass spectrometry have demonstrated various analytical challenges, the advantages and disadvantages of each method are constantly changing with new technological developments. Immunoassay remains the predominant mode of measurement for 25-hydroxy vitamin D although problems with equimolar recovery of the D2 and D3 metabolites remain an issue. Standardisation of all assays has been improved but not resolved with the currently available reference materials as evidenced by the international vitamin D external quality assurance scheme, DEQAS. The choice of method for each laboratory remains a balance mainly between turn around time, convenience, cost and the specificity and accuracy of the information obtained. With increasing discussion and clinical interest surrounding other vitamin D metabolites the vitamin D assay debate is set to continue.
Collapse
|
24
|
Bruce SJ, Rochat B, Béguin A, Pesse B, Guessous I, Boulat O, Henry H. Analysis and quantification of vitamin D metabolites in serum by ultra-performance liquid chromatography coupled to tandem mass spectrometry and high-resolution mass spectrometry--a method comparison and validation. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:200-206. [PMID: 23239334 DOI: 10.1002/rcm.6439] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 10/12/2012] [Accepted: 10/12/2012] [Indexed: 06/01/2023]
Abstract
RATIONALE The aim of the work was to develop and validate a method for the quantification of vitamin D metabolites in serum using ultra-high-pressure liquid chromatography coupled to mass spectrometry (LC/MS), and to validate a high-resolution mass spectrometry (LC/HRMS) approach against a tandem mass spectrometry (LC/MS/MS) approach using a large clinical sample set. METHODS A fast, accurate and reliable method for the quantification of the vitamin D metabolites, 25-hydroxyvitamin D2 (25OH-D2) and 25-hydroxyvitamin D3 (25OH-D3), in human serum was developed and validated. The C3 epimer of 25OH-D3 (3-epi-25OH-D3) was also separated from 25OH-D3. The samples were rapidly prepared via a protein precipitation step followed by solid-phase extraction (SPE) using an HLB μelution plate. Quantification was performed using both LC/MS/MS and LC/HRMS systems. RESULTS Recovery, matrix effect, inter- and intra-day reproducibility were assessed. Lower limits of quantification (LLOQs) were determined for both 25OH-D2 and 25OH-D3 for the LC/MS/MS approach (6.2 and 3.4 µg/L, respectively) and the LC/HRMS approach (2.1 and 1.7 µg/L, respectively). A Passing & Bablok fit was determined between both approaches for 25OH-D3 on 662 clinical samples (1.11 + 1.06x). It was also shown that results can be affected by the inclusion of the isomer 3-epi-25OH-D3. CONCLUSIONS Quantification of the relevant vitamin D metabolites was successfully developed and validated here. It was shown that LC/HRMS is an accurate, powerful and easy to use approach for quantification within clinical laboratories. Finally, the results here suggest that it is important to separate 3-epi-25OH-D3 from 25OH-D3.
Collapse
Affiliation(s)
- Stephen J Bruce
- Clinical Chemistry, University Hospital of Lausanne, CHUV (Centre Hospitalier Universitaire Vaudois), Route du Bugnon 46, 1011, Lausanne, Switzerland
| | | | | | | | | | | | | |
Collapse
|