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Cusano AM, Quero G, Vaiano P, Cicatiello P, Principe M, Micco A, Ruvo M, Consales M, Cusano A. Metasurface-assisted Lab-on-fiber optrode for highly sensitive detection of vitamin D. Biosens Bioelectron 2023; 242:115717. [PMID: 37801838 DOI: 10.1016/j.bios.2023.115717] [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: 05/11/2023] [Revised: 09/18/2023] [Accepted: 09/28/2023] [Indexed: 10/08/2023]
Abstract
The increasing demand for vitamin D status assessment has highlighted the need for rapid, sensitive, and user-friendly methods for its detection in biological samples potentially integrated in Point-of-Care (PoC) diagnostic devices. Detection of the major circulating form of vitamin D, 25-hydroxyvitamin D3-25(OH)D3, is particularly challenging due to the laborious procedures for sample preparation and its low molecular weight (∼400 Da), which requires highly sensitive detection methods. In this study, we developed a novel label-free Lab-on-Fiber biosensing platform for highly sensitive detection of 25(OH)D3 based on the integration of plasmonic metasurfaces (MSs) on the tip of a single-mode optical fiber (OF). A dedicated pipeline was carefully designed and developed to optimize the bio-functionalization of the plasmonic sensor tip to specifically detect the target biomolecule. The resulting MS-assisted Lab-on-fiber platform enables direct and highly sensitive detection of 25(OH)D3 in clinically relevant ranges (4-160 ng/mL), both in buffer solution and complex matrix, with limits of detection (LOD) of 1.40 ng/mL in saline buffer and 0.85 ng/mL in complex matrix. Overall, these results demonstrate that our platform can successfully and specifically detect small molecules in label-free configuration, with performances comparable to those of conventional methods used in clinical practice. The high degree of miniaturization combined with its high sensitivity makes our platform an exceptional building block for realizing valid diagnostic alternatives for label-free detection of clinically relevant analytes, which can be transformed into new low-cost, fast, simple, and ready-to-use PoC diagnostic devices with improved processability and performance compared to current methods.
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Affiliation(s)
- A M Cusano
- Centro Regionale Information Communication Technology (CeRICT) scrl, I-82100, Benevento, Italy
| | - G Quero
- Optoelectronics Group, Engineering Department, University of Sannio, I-82100, Benevento, Italy; Bioscience and Territory Department, University of Molise, I-86090, Pesche, Italy
| | - P Vaiano
- Optoelectronics Group, Engineering Department, University of Sannio, I-82100, Benevento, Italy
| | - P Cicatiello
- Optoelectronics Group, Engineering Department, University of Sannio, I-82100, Benevento, Italy; Department of Chemical Sciences, University of Naples Federico II, I-80126, Napoli, Italy
| | - M Principe
- Optoelectronics Group, Engineering Department, University of Sannio, I-82100, Benevento, Italy
| | - A Micco
- Centro Regionale Information Communication Technology (CeRICT) scrl, I-82100, Benevento, Italy
| | - M Ruvo
- Institute of Biostructure and Bioimaging, National Research Council, I-80131, Napoli, Italy
| | - M Consales
- Centro Regionale Information Communication Technology (CeRICT) scrl, I-82100, Benevento, Italy; Optoelectronics Group, Engineering Department, University of Sannio, I-82100, Benevento, Italy.
| | - A Cusano
- Centro Regionale Information Communication Technology (CeRICT) scrl, I-82100, Benevento, Italy; Optoelectronics Group, Engineering Department, University of Sannio, I-82100, Benevento, Italy.
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2
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Heydari M, Rahbar N, Gholoobi A, Mohammadinejad A, Rezayi M. Designing a label-free electrochemical aptasensor based on polypyrrole-l-cysteine-reduced graphene oxide nanocomposite for detection of 25-hydroxyvitamin D 3. Biotechnol Appl Biochem 2023; 70:1881-1894. [PMID: 37365980 DOI: 10.1002/bab.2490] [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: 01/24/2023] [Accepted: 06/15/2023] [Indexed: 06/28/2023]
Abstract
Reliable and precise quantification of 25-hydroxyvitamin D3 in clinical samples is vital because vitamin D3 deficiency lead to several disorders, such as mental illness, osteoporosis, and coronavirus disease. Herein, we report the fabrication of a novel electrochemical aptasensor using a nanocomposite, including reduced graphene oxide, pyrrole, and l-cysteine, for the sensitive detection of 25-hydroxyvitamin D3 . Subsequently, the aptamer of 25-hydroxyvitamin D3 was immobilized on the surface of the modified electrode. Differential pulse voltammetry signals were utilized for studying the binding and measurement of 25-hydroxyvitamin D3 based on the oxidation peak. Under the optimum conditions, the designed electrochemical aptasensor exhibited a linear detection range of 0.001-150 nM, with a limit of detection of 0.006 nM. Furthermore, the proposed aptasensor selectively detected 25-hydroxyvitamin D3 compared to other analogs. Moreover, this aptasensor was successfully applied for the detection of 25-hydroxyvitamin D3 in human serum samples, which were quantified by the enzyme-linked immunosorbent assay method. The acceptable recoveries of 82.67%-111.07% demonstrated that this proposed electrochemical aptasensor can be a promising alternative for clinical methods of vitamin D determination.
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Affiliation(s)
- Maryam Heydari
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Nadereh Rahbar
- Nanotechnology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Medicinal Chemistry Departments, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Aida Gholoobi
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
- Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Arash Mohammadinejad
- Department of Medical Biotechnology and Nanotechnology, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Rezayi
- Metabolic Syndrome Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Medical Toxicology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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3
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Lenz JS, Tintle N, Kerlikowsky F, Badrasawi M, Zahdeh R, Qasrawi R, Hahn A, Schuchardt JP. Assessment of the vitamin D status and its determinants in young healthy students from Palestine. J Nutr Sci 2023; 12:e38. [PMID: 38415242 PMCID: PMC10897509 DOI: 10.1017/jns.2023.25] [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: 12/13/2022] [Revised: 02/17/2023] [Accepted: 02/22/2023] [Indexed: 03/19/2023] Open
Abstract
The global prevalence of vitamin D deficiency is high. Poor vitamin D status, especially in women, has been reported in several countries in the Middle East despite adequate year-round sunlight for vitamin D synthesis. However, data on vitamin D status in Palestine are scarce. The aim of this cross-sectional study was to evaluate vitamin D status based on serum concentrations of 25-hydroxycholecalciferol [25-(OH)D] among young healthy Palestinian students (18-27 years) and to assess associations between 25-(OH)D concentrations and several predictors. The mean 25-(OH)D concentration of women (n 151) was 27⋅2 ± 14⋅5 nmol/l, with the majority having insufficient (31⋅1 %) or deficient (<60 %) 25-(OH)D status. Only 7 % of women achieved sufficient or optimal 25-(OH)D status. In contrast, men (n 52) had a mean 25-(OH)D concentration of 58⋅3 ± 14⋅5 nmol/l, with none classified as deficient, and most obtaining sufficient (55⋅8 %) or even optimal 25-(OH)D status (11⋅5 %). Among women, 98 % wore a hijab and 74 % regularly used sunscreen. Daily dietary vitamin D intake (3-d 24-h recalls) was 45⋅1 ± 36⋅1 IU in the total group (no sex differences). After adjustment, multiple linear regression models showed significant associations between 25-(OH)D concentrations and the use of supplements (B = 0⋅069; P = 0⋅020) and dietary vitamin D (B = 0⋅001; P = 0⋅028). In gender-stratified analysis, the association between supplement use and 25-(OH)D concentrations was significant in women (B = 0⋅076; P = 0⋅040). The vitamin D status of women in the present cohort is critical and appears to be mainly due to wearing a hijab, regular use of sunscreen and low dietary vitamin D intake. The vitamin D status of the women should be improved by taking vitamin D containing supplements or fortified foods.
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Affiliation(s)
- Janina Susann Lenz
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Am Kleinen Felde 30, Hannover 30167, Germany
| | - Nathan Tintle
- Department of Population Health Nursing Science, College of Nursing, University of Illinois – Chicago, Chicago, IL, USA
| | - Felix Kerlikowsky
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Am Kleinen Felde 30, Hannover 30167, Germany
| | - Manal Badrasawi
- Department of Nutrition and Food Technology, Faculty of Agriculture and Veterinary Medicine, An-Najah National University, Nablus, West Bank, Palestine
| | - Rana Zahdeh
- Department of Chemistry and Applied Sciences, College of Applied Sciences, Palestine Polytechnic University, Hebron, West Bank, Palestine
| | - Radwan Qasrawi
- Department of Computer Science, Al-Quds University, Jerusalem, Palestine
- Department of Computer Engineering, Istinye University, Istanbul, Turkey
| | - Andreas Hahn
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Am Kleinen Felde 30, Hannover 30167, Germany
| | - Jan Philipp Schuchardt
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Am Kleinen Felde 30, Hannover 30167, Germany
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Khadilkar A, Kajale N, Oza C, Oke R, Gondhalekar K, Patwardhan V, Khadilkar V, Mughal Z, Padidela R. Vitamin D status and determinants in Indian children and adolescents: a multicentre study. Sci Rep 2022; 12:16790. [PMID: 36202910 PMCID: PMC9537341 DOI: 10.1038/s41598-022-21279-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 09/26/2022] [Indexed: 11/09/2022] Open
Abstract
Studies performed on Indian children to assess vitamin-D status have been on small sample sizes, limited to specific geographical locations and used non-standard methods to measure 25(OH)D3. This multicentre study assessed 25(OH)D3 concentrations from dried blood spots (DBS) in 5–18-year-old Indian children and adolescents using a standardized protocol and identified factors contributing towards vitamin D deficiency. Cross-sectional, observational school-based study was conducted by multi-stage stratified random sampling. A city and nearby village were selected from 6 Indian states covering wide geographical areas. Demography, anthropometry, body-composition, dietary-intakes and DBS samples were collected. 25(OH)D3 was assessed from DBS using Liquid chromatography with tandem-mass spectrometry. Vitamin-D status was assessed in 2500 children; with additional data collected on a subset (n = 669) to assess predictors. Mean vitamin-D concentration was 45.8 ± 23.9 nmol/L, 36.8% of subjects had sufficient vitamin-D (> 50 nmol/L); rural subjects and boys had higher concentrations (p < 0.05). On regression analysis, younger age, female-gender, overweight and urban residence significantly contributed to deficiency. More than half the Indian children/adolescents were vitamin-D deficient or insufficient. Our study reinforces vitamin-D deficiency as a major public health problem and the need for supplementation, food fortification and educating the population as initiatives required to improve sufficiency status.
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Affiliation(s)
- Anuradha Khadilkar
- Department of Growth and Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, 32 Sassoon Road, Pune, 411 001, India. .,Interdisciplinary School of Health Sciences, Savitribai Phule University, Pune, India.
| | - Neha Kajale
- Department of Growth and Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, 32 Sassoon Road, Pune, 411 001, India.,Interdisciplinary School of Health Sciences, Savitribai Phule University, Pune, India
| | - Chirantap Oza
- Department of Growth and Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, 32 Sassoon Road, Pune, 411 001, India
| | - Rashmi Oke
- Department of Growth and Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, 32 Sassoon Road, Pune, 411 001, India
| | - Ketan Gondhalekar
- Department of Growth and Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, 32 Sassoon Road, Pune, 411 001, India
| | - Vivek Patwardhan
- Department of Growth and Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, 32 Sassoon Road, Pune, 411 001, India
| | - Vaman Khadilkar
- Department of Growth and Endocrinology, Hirabai Cowasji Jehangir Medical Research Institute, Jehangir Hospital, 32 Sassoon Road, Pune, 411 001, India.,Interdisciplinary School of Health Sciences, Savitribai Phule University, Pune, India
| | - Zulf Mughal
- Department of Paediatric Endocrinology, Royal Manchester Children's Hospital, Manchester University, NHS Foundation Trust, Manchester, UK
| | - Raja Padidela
- Department of Paediatric Endocrinology, Royal Manchester Children's Hospital, Manchester University, NHS Foundation Trust, Manchester, UK
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Wang J, Li X, Gan Y, Fan T, Yang J, Rao F, Yang J. Comparison of the Serum Total 25-Hydroxyvitamin D Concentrations Using Chemiluminescent Immunoassay and Liquid Chromatography-Tandem Mass Spectrometry in Children. J Nutr Sci Vitaminol (Tokyo) 2022; 68:181-188. [PMID: 35768249 DOI: 10.3177/jnsv.68.181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We aimed to assess the difference and agreement between the CL-series Vitamin D Total assay (Mindray), which was a kind of chemiluminescent immunoassay (CLIA) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) in the measurement of serum 25-hydroxyvitamin D [25(OH)D] concentrations in children. We compared the 25(OH)D concentrations of 92 children using the CLIA and LC-MS/MS. Paired samples t-test was used to compare the two groups. Linear regression was used to show the correlation between CLIA and LC-MS/MS. The difference and bias between 2 methods were revealed in Bland-Altman plot. Agreement in classification of deficiency between CLIA and LC-MS/MS was assessed using Cohen's Kappa. p value<0.05 was considered statistically significant. Using Shapiro-Wilk Test to assess whether the data follows a normal distribution. Using 95% children's serum 25(OH)D concentrations by LC-MS/MS as the reference interval. The regression equation was CLIA=1.185×LC-MS/MS-3.328. The fitness adjusted r2 was 0.589. The CLIA showed positive bias compared to LC-MS/MS, p<0.05, bias=(1.94±16.56) ng/mL. Cohen's Kappa=0.53, p<0.001. The agreement of 2 methods in diagnosing "deficiency" was good. According to Shapiro-Wilk Test, the data followed a normal distribution (W=0.99). The reference interval of children's serum 25(OH)D concentrations by LC-MS/MS was 11.35-44.57 ng/mL. In measuring 25(OH)D concentration of children, CLIA represented higher levels than LC-MS/MS. The two methods were consistent in diagnosing vitamin D deficiency. The reference interval of children's serum 25(OH)D concentrations by LC-MS/MS was 11.35-44.57 ng/mL in our area in summer.
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Affiliation(s)
- Jie Wang
- Department of Transfusion, The Affiliated Hospital of Southwest Medical University
| | | | - Yongyi Gan
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province.,Institute of Nuclear Medicine, Southwest Medical University
| | - Tianxing Fan
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province.,Institute of Nuclear Medicine, Southwest Medical University
| | - Jing Yang
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province.,Institute of Nuclear Medicine, Southwest Medical University
| | - Fang Rao
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province.,Institute of Nuclear Medicine, Southwest Medical University
| | - Jianbo Yang
- Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University.,Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province.,Institute of Nuclear Medicine, Southwest Medical University
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6
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Han JY, Kim SW, Kim H, Ku SY. The level of vitamin D in follicular fluid and ovarian reserve in an in vitro fertilization program: A pilot study. Sci Prog 2022; 105:368504221103782. [PMID: 35619572 PMCID: PMC10364929 DOI: 10.1177/00368504221103782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND The level of vitamin D in follicular fluid (FF) according to the ovarian reserve has never been investigated, and the effect of FF vitamin D on the outcome of assisted reproductive technology (ART) remains controversial. The aim of this study is to evaluate the association between FF vitamin D levels and baseline anti-Müllerian hormone (AMH) / ART outcomes. METHODS Forty-seven patients who underwent controlled ovarian stimulation at the fertility clinic of an academic tertiary care center were enrolled for a prospective observational study. FF was collected from the first aspirated leading follicle of each ovary and assayed by an enzyme-linked immunosorbent assay. Multivariable linear regression analysis was used to assess the association between baseline AMH and FF vitamin D levels with adjustment for basal FSH and serum vitamin D levels. RESULTS Both the AMH and serum vitamin D were significant predictors for FF vitamin D. The estimated marginal mean of FF vitamin D level was higher in women with decreased ovarian reserve (DOR) than those with normal ovarian reserve (24.1 ± 2.1 vs. 18.8 ± 1.4 ng/ml, p = 0.048). However, FF vitamin D did not demonstrate any significant associations with cycle outcomes, including fertilization rate and the number and proportion of good embryos at day three. CONCLUSION We observed significantly higher FF vitamin D levels in women with DOR. However, FF vitamin D did not demonstrate any significant associations with the outcome of ART. A larger prospective study is needed to investigate the effect of FF vitamin D on the clinical pregnancy rate and live birth rate.
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Affiliation(s)
- Ji Yeon Han
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
| | - Sung Woo Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
| | - Hoon Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
| | - Seung-Yup Ku
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
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Vitamin D Status of the British African-Caribbean Residents: Analysis of the UK Biobank Cohort. Nutrients 2021; 13:nu13114104. [PMID: 34836358 PMCID: PMC8620024 DOI: 10.3390/nu13114104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/11/2021] [Accepted: 11/13/2021] [Indexed: 11/17/2022] Open
Abstract
The vitamin D status of the United Kingdom (UK) African-Caribbean (AC) population remains under-researched, despite an increased risk of vitamin D deficiency due to darker skin phenotypes and living at a high latitude. This cross-sectional study explored the vitamin D status and intake of AC individuals (n = 4046 with a valid serum 25(OH)D measurement) from the UK Biobank Cohort, aged ≥40 years at baseline (2006-2010). Over one third of the population were deficient (<25 nmol/L), 41.1% were insufficient (25-50 nmol/L) and 15.9% were sufficient (>50 nmol/L). Median (IQR) 25(OH)D was 30.0 (20.9) nmol/L. Logistic regression showed that brown/black skin phenotype, winter blood draw, not consuming oily fish and not using vitamin D supplements predicted increased odds of vitamin D deficiency, whilst older age and a summer or autumn blood draw were significantly associated with reduced odds of vitamin D deficiency. Vitamin D deficiency and insufficiency were prevalent in this AC population and is of considerable concern given the individual and societal implications of increased morbidity. Public health messaging for this group should focus on year-round vitamin D supplementation and increasing intakes of culturally appropriate vitamin D-rich foods. These data also support the urgent requirement for a revised vitamin D RNI for ethnic groups.
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Trimboli F, Rotundo S, Armili S, Mimmi S, Lucia F, Montenegro N, Antico GC, Cerra A, Gaetano M, Galato F, Giaquinto Carinci L, Iania D, Mancuso S, Martucci M, Teti C, Greco M, Cuda G, Angotti E. Serum 25-hydroxyvitamin D measurement: Comparative evaluation of three automated immunoassays. Pract Lab Med 2021; 26:e00251. [PMID: 34386568 PMCID: PMC8342948 DOI: 10.1016/j.plabm.2021.e00251] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/14/2021] [Accepted: 07/26/2021] [Indexed: 11/23/2022] Open
Abstract
Objectives: the different analytical methods for measurement of serum 25-hydroxyvitamin D (25(OH)D) are not yet fully harmonized and no consensus exists on a threshold of 25(OH)D defining a deficiency status. In this study, we compared the results from the assays of serum 25(OH)D performed with three different methods to evaluate the presence of potential biases and how much these biases can influence the assignment of patients to specific 25(OH)D deficiency/sufficiency categories. Design and Methods: Liaison 25(OH) Vitamin D Total (DiaSorin Liaison XL), Elecsys Vitamin D Total II (Roche Elecsys) and Lumipulse G25(OH) Vitamin D (Fujirebio Lumipulse G1200) were used. Methods comparability was established performing Passing-Bablok regression and Bland-Altman analysis to prove whether the differences found were lower than the preliminarily pre-established maximum acceptable bias. Results: all Passing-Bablok regressions exhibited the presence of a proportional and constant systematic error. Bland-Altman analysis revealed biases well above the maximum acceptable bias, so the 25(OH)D concentrations measured were not comparable. To evaluate whether the three methods had the same ability to classify patients into different categories of vitamin D levels, we categorized results obtained by each method in reference classes. Lumipulse categorized most patients into the class with the lowest 25(OH)D concentrations (<20 ng/mL) whereas Elecsys ranked the lowest number. Conclusions: Liaison XL and Elecsys have shown good accuracy compared to Lumipulse in measuring 25(OH)D levels. Nevertheless, the assays were not interchangeable due to the lack of comparability of results as well as to the disagreement in classification of hormone deficiency or sufficiency. Three immunometric assays for the measuring of serum 25(OH)Vitamin D were compared. Two of three assay show good accuracy whereas the third only fair. Due to the lack of comparability of the results, the assays were not exchangeable. Assays are at odds in the classification of hormone deficiency or sufficiency. Efforts will be required in the future to improve the immunoassays harmonization.
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Affiliation(s)
- Francesca Trimboli
- Department of Health Science, Magna Græcia University, Catanzaro, Italy
- Corresponding author.
| | - Salvatore Rotundo
- Department of Health Science, Magna Græcia University, Catanzaro, Italy
| | - Simone Armili
- Department of Health Science, Magna Græcia University, Catanzaro, Italy
| | - Selena Mimmi
- Department of Experimental and Clinical Medicine, Magna Græcia University, Catanzaro, Italy
| | - Fortunata Lucia
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Nicola Montenegro
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Giulio Cesare Antico
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Alessandro Cerra
- Clinical Pathology Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Maria Gaetano
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Francesco Galato
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Lorenza Giaquinto Carinci
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Danilo Iania
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Serafina Mancuso
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Maria Martucci
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Consuelo Teti
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Marta Greco
- Department of Health Science, Magna Græcia University, Catanzaro, Italy
- Clinical Pathology Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
| | - Giovanni Cuda
- Department of Experimental and Clinical Medicine, Magna Græcia University, Catanzaro, Italy
- Corresponding author.
| | - Elvira Angotti
- Clinical Biochemistry Unit, Azienda Ospedaliera Universitaria Mater Domini Hospital, Catanzaro, Italy
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9
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Qorbani M, Mahdavi Gorabi A, Ejtahed HS, Namazi N, Khoramdad M, Heshmat R, Kazemian E, Kelishadi R. Percentile values for serum levels of vitamins A and D in Iranian children and adolescents: The CASPIAN-V study. Nutrition 2021; 90:111307. [PMID: 34116487 DOI: 10.1016/j.nut.2021.111307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 04/18/2021] [Indexed: 12/30/2022]
Abstract
OBJECTIVES The reference values to determine vitamin A and D deficiency may vary based on ethnicity, age, and region of residence. The aim of this study was to determine the reference interval of circulating vitamin A and D levels among Iranian children and adolescents based on sex, age, and region of residence. METHODS This nationwide cross-sectional study was performed with 2596 students 7 to 18 y of age from the CASPIAN-V (Childhood and Adolescence Surveillance and Prevention of Adult Non- communicable disease) study. A parametric method was used to define the age-specific reference values by obtaining smooth centile curves and explicit formulae for the centile estimates and SD scores for both sexes and regions of residence. RESULTS Significant differences were found between the residents of rural and urban regions in terms of serum 25-hydroxyvitamin D [25(OH)D] and retinol concentration (P < 0.05). Boys (27 ± 8 versus 26.04 ± 10, P = 0.009). Children ages 7 to 12 y had higher serum 25(OH)D concentration than 13- to 18-y-old adolescents (26.96 ± 8 versus 26.04 ± 10, P = 0.007). The estimated reference interval for circulating 25(OH)D levels corresponding to the range between the 5th and 95th percentiles were 11.45 to 48.40 ng/mL in boys and 9.51 to 47.69 ng/mL in girls. Estimated reference intervals for serum retinol concentration among boys and girls corresponding to the 5th and 95th percentiles were 0.58 to 3.38 and 0.58 to 4.52, respectively. There were significant variations in both retinol and 25(OH)D concentrations across different age groups. CONCLUSION This study established the reference intervals for circulating 25(OH)D and retinol levels in Iranian adolescents and children in different age groups based on sex and region.
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Affiliation(s)
- Mostafa Qorbani
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran; Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Armita Mahdavi Gorabi
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Hanieh-Sadat Ejtahed
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran; Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Nazli Namazi
- Diabetes Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Maliheh Khoramdad
- Department of Epidemiology, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Ramin Heshmat
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Elham Kazemian
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran.
| | - Roya Kelishadi
- Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
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Zheng JS, Luan J, Sofianopoulou E, Sharp SJ, Day FR, Imamura F, Gundersen TE, Lotta LA, Sluijs I, Stewart ID, Shah RL, van der Schouw YT, Wheeler E, Ardanaz E, Boeing H, Dorronsoro M, Dahm CC, Dimou N, El-Fatouhi D, Franks PW, Fagherazzi G, Grioni S, Huerta JM, Heath AK, Hansen L, Jenab M, Jakszyn P, Kaaks R, Kühn T, Khaw KT, Laouali N, Masala G, Nilsson PM, Overvad K, Olsen A, Panico S, Quirós JR, Rolandsson O, Rodríguez-Barranco M, Sacerdote C, Spijkerman AMW, Tong TYN, Tumino R, Tsilidis KK, Danesh J, Riboli E, Butterworth AS, Langenberg C, Forouhi NG, Wareham NJ. The association between circulating 25-hydroxyvitamin D metabolites and type 2 diabetes in European populations: A meta-analysis and Mendelian randomisation analysis. PLoS Med 2020; 17:e1003394. [PMID: 33064751 PMCID: PMC7567390 DOI: 10.1371/journal.pmed.1003394] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 09/11/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Prior research suggested a differential association of 25-hydroxyvitamin D (25(OH)D) metabolites with type 2 diabetes (T2D), with total 25(OH)D and 25(OH)D3 inversely associated with T2D, but the epimeric form (C3-epi-25(OH)D3) positively associated with T2D. Whether or not these observational associations are causal remains uncertain. We aimed to examine the potential causality of these associations using Mendelian randomisation (MR) analysis. METHODS AND FINDINGS We performed a meta-analysis of genome-wide association studies for total 25(OH)D (N = 120,618), 25(OH)D3 (N = 40,562), and C3-epi-25(OH)D3 (N = 40,562) in participants of European descent (European Prospective Investigation into Cancer and Nutrition [EPIC]-InterAct study, EPIC-Norfolk study, EPIC-CVD study, Ely study, and the SUNLIGHT consortium). We identified genetic variants for MR analysis to investigate the causal association of the 25(OH)D metabolites with T2D (including 80,983 T2D cases and 842,909 non-cases). We also estimated the observational association of 25(OH)D metabolites with T2D by performing random effects meta-analysis of results from previous studies and results from the EPIC-InterAct study. We identified 10 genetic loci associated with total 25(OH)D, 7 loci associated with 25(OH)D3 and 3 loci associated with C3-epi-25(OH)D3. Based on the meta-analysis of observational studies, each 1-standard deviation (SD) higher level of 25(OH)D was associated with a 20% lower risk of T2D (relative risk [RR]: 0.80; 95% CI 0.77, 0.84; p < 0.001), but a genetically predicted 1-SD increase in 25(OH)D was not significantly associated with T2D (odds ratio [OR]: 0.96; 95% CI 0.89, 1.03; p = 0.23); this result was consistent across sensitivity analyses. In EPIC-InterAct, 25(OH)D3 (per 1-SD) was associated with a lower risk of T2D (RR: 0.81; 95% CI 0.77, 0.86; p < 0.001), while C3-epi-25(OH)D3 (above versus below lower limit of quantification) was positively associated with T2D (RR: 1.12; 95% CI 1.03, 1.22; p = 0.006), but neither 25(OH)D3 (OR: 0.97; 95% CI 0.93, 1.01; p = 0.14) nor C3-epi-25(OH)D3 (OR: 0.98; 95% CI 0.93, 1.04; p = 0.53) was causally associated with T2D risk in the MR analysis. Main limitations include the lack of a non-linear MR analysis and of the generalisability of the current findings from European populations to other populations of different ethnicities. CONCLUSIONS Our study found discordant associations of biochemically measured and genetically predicted differences in blood 25(OH)D with T2D risk. The findings based on MR analysis in a large sample of European ancestry do not support a causal association of total 25(OH)D or 25(OH)D metabolites with T2D and argue against the use of vitamin D supplementation for the prevention of T2D.
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Affiliation(s)
- Ju-Sheng Zheng
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
- Westlake Laboratory of Life Sciences and Biomedicine, Key Laboratory of Growth Regulation and Translational Research of Zhejiang Province, School of Life Sciences, Westlake University, Hangzhou, China
| | - Jian’an Luan
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Eleni Sofianopoulou
- MRC/BHF Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
- National Institute for Health Research Blood and Transplant Research Unit in Donor Health and Genomics, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Stephen J. Sharp
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Felix R. Day
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Fumiaki Imamura
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | | | - Luca A. Lotta
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Ivonne Sluijs
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Isobel D. Stewart
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Rupal L. Shah
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Yvonne T. van der Schouw
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands
| | - Eleanor Wheeler
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Eva Ardanaz
- Navarra Public Health Institute, Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), Pamplona, Spain
- CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Heiner Boeing
- Department of Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke, Germany
| | | | | | - Niki Dimou
- International Agency for Research on Cancer, Lyon, France
| | - Douae El-Fatouhi
- Center of Research in Epidemiology and Population Health, UMR 1018 Inserm, Institut Gustave Roussy, Paris South–Paris Saclay University, Villejuif, France
| | - Paul W. Franks
- Department of Clinical Sciences, Lund University, Malmö, Sweden
| | - Guy Fagherazzi
- Center of Research in Epidemiology and Population Health, UMR 1018 Inserm, Institut Gustave Roussy, Paris South–Paris Saclay University, Villejuif, France
- Department of Population Health, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Sara Grioni
- Epidemiology and Prevention Unit, Milan, Italy
| | - José María Huerta
- CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Department of Epidemiology, Murcia Regional Health Council, Instituto Murciano de Investigación Biosanitaria Virgen de la Arrixaca, Murcia, Spain
| | - Alicia K. Heath
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
| | - Louise Hansen
- Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Mazda Jenab
- International Agency for Research on Cancer, Lyon, France
| | - Paula Jakszyn
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology–Institut d’Investigació Biomédica de Bellvitge, L’Hospitalet de Llobregat, Barcelona, Spain
- Facultat Ciències Salut Blanquerna, Universitat Ramon Llull, Barcelona, Spain
| | - Rudolf Kaaks
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tilman Kühn
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Kay-Tee Khaw
- Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Nasser Laouali
- Center of Research in Epidemiology and Population Health, UMR 1018 Inserm, Institut Gustave Roussy, Paris South–Paris Saclay University, Villejuif, France
| | - Giovanna Masala
- Cancer Risk Factors and Life-Style Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network (ISPRO), Florence, Italy
| | | | - Kim Overvad
- Department of Public Health, Aarhus University, Aarhus, Denmark
- Department of Cardiology, Aalborg University Hospital, Aarhus, Denmark
| | - Anja Olsen
- Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Salvatore Panico
- Dipartimento di Medicina Clinica e Chirurgia, University of Naples Federico II, Naples, Italy
| | | | - Olov Rolandsson
- Family Medicine Division, Department of Public Health and Clinical Medicine, Umeå University, Umeå, Sweden
| | - Miguel Rodríguez-Barranco
- CIBER Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Andalusian School of Public Health (EASP), Granada, Spain
- Instituto de Investigación Biosanitaria de Granada, Universidad de Granada, Granada, Spain
| | - Carlotta Sacerdote
- Unit of Cancer Epidemiology, Città della Salute e della Scienza di Torino University Hospital–University of Turin and Center for Cancer Prevention (CPO), Torino, Italy
| | | | - Tammy Y. N. Tong
- Cancer Epidemiology Unit, Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom
| | | | - Konstantinos K. Tsilidis
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
- Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, Greece
| | - John Danesh
- MRC/BHF Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
- National Institute for Health Research Blood and Transplant Research Unit in Donor Health and Genomics, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
- British Heart Foundation Cambridge Centre of Excellence, Division of Cardiovascular Medicine, Addenbrooke’s Hospital, Cambridge, United Kingdom
- Department of Human Genetics, Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, United Kingdom
| | - Elio Riboli
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
| | - Adam S. Butterworth
- MRC/BHF Cardiovascular Epidemiology Unit, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
- National Institute for Health Research Blood and Transplant Research Unit in Donor Health and Genomics, Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom
| | - Claudia Langenberg
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
| | - Nita G. Forouhi
- MRC Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom
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12
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Gonel A, Kirhan I, Koyuncu I, Bayraktar N, Karadag ME, Karadag M. The Role of Interferences in the Increasing Incidence of Vitamin D Deficiency. Endocr Metab Immune Disord Drug Targets 2020; 20:1303-1308. [PMID: 32496995 DOI: 10.2174/1871530320666200604160208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 12/08/2019] [Accepted: 04/10/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Lipemia is one of the causes of interference in immunoassay and LC-MS/MS methods. Increased prevalence of vitamin D deficiency in the US, where obesity is gradually increasing, raises the suspicion that high levels of fat diet and blood lipid levels interfere with vitamin D measurement results. The focus of this study was to investigate the effect of blood lipid profiles on vitamin D results and prevent the matrix effect. MATERIAL AND METHODS In this study, 25OH vitamin D3 (25OHD3) levels of 100 samples consecutively accepted to biochemistry laboratory regardless of age and sex were measured by the LC-MS/MS method, and each sample was restudied after 1/10 dilution. After dilution restudy, two groups were obtained-group 1 (results deviating below 20%) and group 2 (results deviating above 20%)-and the difference between the groups was investigated. There were 79 patients in group 1 and 21 patients in group 2. In our study, lipid profiles (triglyceride, total cholesterol, HDL, LDL) from the same samples of consecutive vitamin D patients were studied. RESULTS It was observed that the triglyceride, total cholesterol HDL, LDL, and 25OHD3 measurements of group 1 and group 2 were similar (p > 0.05). While the mean vitamin D value in the second group was 9.94 ± 7.85, the mean vitamin D value after dilution was measured as 39.23 ± 18.13 and was statistically significant. 25OHD3 concentrations of 21 patients out of 100 were found to be falsely low. Measurements were repeated to confirm the results. CONCLUSION The matrix effect caused by exogenous and endogenous interferences in the blood could be a hidden factor increasing the prevalence of vitamin D deficiency by causing falsely low 25OHD3 values. Suspicious results should be remeasured by a dilution study.
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Affiliation(s)
- Ataman Gonel
- Department of Biochemistry, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Idris Kirhan
- Department of Internal Medicine, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Ismail Koyuncu
- Department of Biochemistry, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Nihayet Bayraktar
- Department of Biochemistry, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Mujgan Ercan Karadag
- Department of Biochemistry, Harran University, Faculty of Medicine, Sanliurfa, Turkey
| | - Mehmet Karadag
- Department of Biostatistics and Bioinformatics, Mustafa Kemal University, Faculty of Medicine, Hatay, Turkey
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The routine chemiluminescence assay for plasma 25-hydroxyvitamin D analysis does not overestimate the prevalence of vitamin D deficiency in adolescents. Nutr Res 2020; 79:60-67. [PMID: 32610258 DOI: 10.1016/j.nutres.2020.05.013] [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: 10/02/2019] [Revised: 03/27/2020] [Accepted: 05/21/2020] [Indexed: 11/27/2022]
Abstract
Vitamin D deficiency (VDD) is a global public health problem. Inaccurate methods for measuring plasma 25-hydroxyvitamin D (25[OH]D) may have contributed to the reported high prevalence of VDD. We hypothesized that the most commonly used assay for vitamin D status, chemiluminescence immunoassay (CLIA), underestimates 25(OH)D levels and thus overestimates VDD. Using both liquid chromatography-tandem mass spectrometry and CLIA for plasma 25(OH)D, we evaluated the prevalence of VDD in adolescents (11-16 years-old; n = 410) by both methods in a cross-sectional study. Subjects were selected from public middle schools from all the 6 Governorates of Kuwait using stratified multistage cluster random sampling. Cohen κ agreement, linear regression, and Bland-Altman plots were used to evaluate the classification of VDD by the 2 methods. VDD (25[OH]D < 50 nmol/L) was 85.9% with CLIA and 81.2% with liquid chromatography-tandem mass spectrometry. There was a good agreement between the 2 methods in classifying the study subjects as deficient, insufficient, or sufficient (κ = 85.1%, P < .001). The between-assay bias was very small with a mean percentage difference < 1% from the mean value of the 25(OH)D as assessed by the 2 methods. These data did not support our hypothesis, and we conclude that the routine methods used for plasma 25(OH)D levels have no or little impact on evaluating VDD as a public health problem or in clinical management.
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14
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A Critical Appraisal of Strategies to Optimize Vitamin D Status in Germany, a Population with a Western Diet. Nutrients 2019; 11:nu11112682. [PMID: 31698703 PMCID: PMC6893762 DOI: 10.3390/nu11112682] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 10/26/2019] [Accepted: 10/30/2019] [Indexed: 12/12/2022] Open
Abstract
During the last decade, our scientific knowledge of the pleiotropic biological effects of vitamin D metabolites and their relevance to human health has expanded widely. Beyond the well-known key role of vitamin D in calcium homeostasis and bone health, it has been shown that vitamin D deficiency is associated with a broad variety of independent diseases, including several types of cancer, and with increased overall mortality. Moreover, recent findings have demonstrated biological effects of the vitamin D endocrine system that are not mediated via activation of the classical nuclear vitamin D receptor (VDR) by binding with high affinity to its corresponding ligand, the biologically active vitamin D metabolite 1,25-dihydroxyvitamin D (1,25(OH)2D). In contrast, many of these new biological effects of vitamin D compounds, including regulation of the circadian clock and many metabolic functions, are mediated by other vitamin D metabolites, including 20-hydroxyvitamin D and 20,23-dihydroxyvitamin D, and involve their binding to the aryl hydrocarbon receptor (AhR) and retinoid-orphan receptor (ROR). In most populations, including the German population, UVB-induced cutaneous vitamin D production is the main source for fulfilling the human body’s requirements of vitamin D. However, this causes a dilemma because solar or artificial UVR exposure is associated with skin cancer risk. In addition to UVB-induced vitamin D production in skin, in humans, there are two other possible sources of vitamin D: from diet and supplements. However, only a few natural foods contain substantial amounts of vitamin D, and in most populations, the dietary source of vitamin D cannot fulfill the body´s requirements. Because an increasing body of evidence has convincingly demonstrated that vitamin D deficiency is very common worldwide, it is the aim of this paper to (i) give an update of the vitamin D status in a population with a western diet, namely, the German population, and to (ii) develop strategies to optimize the vitamin D supply that consider both the advantages as well as the disadvantages/risks of different approaches, including increasing vitamin D status by dietary intake, by supplements, or by UVB-induced cutaneous synthesis of vitamin D.
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Kiebzak GM, Neal KM, Hosseinzadeh P, Olney RC, Levine MA. Pitfalls with Vitamin D Research in Musculoskeletal Disorders and Recommendations on How to Avoid Them. J Clin Res Pediatr Endocrinol 2019; 11:220-226. [PMID: 30759962 PMCID: PMC6745458 DOI: 10.4274/jcrpe.galenos.2019.2019.0007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 02/08/2019] [Indexed: 01/22/2023] Open
Abstract
Reports suggesting that vitamin D may have extraskeletal roles have renewed interest in vitamin D research and stimulated publication of an increasing number of new studies each year. These studies typically assess vitamin D status by measuring the blood concentration of 25-hydroxyvitamin D [25(OH)D], the principal circulating metabolite of vitamin D. Unfortunately, variations in assay format, inconsistency in interpreting 25(OH)D concentrations, cohort bias (age, body mass index, race, season of measurements etc.) and failure to measure critical variables needed to interpret study results, makes interpreting results and comparing studies difficult. Further, variation in reporting results (reporting mean values vs. percent of the cohort that is deficient, no clear statement as to clinical relevance of effect size, etc.) further limits interstudy analyses. In this paper, we discuss many common pitfalls in vitamin D research. We also provide recommendations on avoiding these pitfalls and suggest guidelines to enhance consistency in reporting results.
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Affiliation(s)
- Gary M. Kiebzak
- Nemours Children’s Hospital and Specialty Care, Department of Orthopedics and Sports Medicine, Florida, USA
| | - Kevin M. Neal
- Nemours Children’s Specialty Care, Department of Orthopedic Surgery, Florida, USA
| | - Pooya Hosseinzadeh
- Washington University Faculty of Medicine, Department of Orthopaedic Surgery, 1 Children’s Place, Missouri, USA
| | - Robert C. Olney
- Nemours Children’s Specialty Care, Department of Endocrinology, Florida, USA
| | - Michael A. Levine
- Children’s Hospital of Philadelphia, Center for Bone Health, Division of Endocrinology and Diabetes, Pennsylvania, USA
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16
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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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Hengist A, Perkin O, Gonzalez JT, Betts JA, Hewison M, Manolopoulos KN, Jones KS, Koulman A, Thompson D. Mobilising vitamin D from adipose tissue: The potential impact of exercise. NUTR BULL 2019; 44:25-35. [PMID: 34853551 PMCID: PMC8609434 DOI: 10.1111/nbu.12369] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Vitamin D is lipophilic and accumulates substantially in adipose tissue. Even without supplementation, the amount of vitamin D in the adipose of a typical adult is equivalent to several months of the daily reference nutrient intake (RNI). Paradoxically, despite the large amounts of vitamin D located in adipose tissue, individuals with obesity are often vitamin D deficient according to consensus measures of vitamin D status (serum 25-hydroxyvitamin D concentrations). Thus, it appears that vitamin D can become 'trapped' in adipose tissue, potentially due to insufficient lipolytic stimulation and/or due to tissue dysfunction/adaptation resulting from adipose expansion. Emerging evidence suggests that exercise may mobilise vitamin D from adipose (even in the absence of weight loss). If exercise helps to mobilise vitamin D from adipose tissue, then this could have important ramifications for practitioners and policymakers regarding the management of low circulating levels of vitamin D, as well as chronically low levels of physical activity, obesity and associated health conditions. This perspective led us to design a study to examine the impact of exercise on vitamin D status, vitamin D turnover and adipose tissue vitamin D content (the VitaDEx project). The VitaDEx project will determine whether increasing physical activity (via exercise) represents a potentially useful strategy to mobilise vitamin D from adipose tissue.
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Affiliation(s)
- A Hengist
- Department for Health University of Bath Bath UK
| | - O Perkin
- Department for Health University of Bath Bath UK
| | - J T Gonzalez
- Department for Health University of Bath Bath UK
| | - J A Betts
- Department for Health University of Bath Bath UK
| | - M Hewison
- Institute of Metabolism and Systems Research University of Birmingham Birmingham UK
| | - K N Manolopoulos
- Institute of Metabolism and Systems Research University of Birmingham Birmingham UK
| | - K S Jones
- NIHR BRC Nutritional Biomarker Laboratory University of Cambridge Cambridge UK
| | - A Koulman
- NIHR BRC Nutritional Biomarker Laboratory University of Cambridge Cambridge UK
| | - D Thompson
- Department for Health University of Bath Bath UK
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Assessment of Vitamin Status in Patients with Nontuberculous Mycobacterial Pulmonary Disease: Potential Role of Vitamin A as a Risk Factor. Nutrients 2019; 11:nu11020343. [PMID: 30764587 PMCID: PMC6412884 DOI: 10.3390/nu11020343] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 01/31/2019] [Accepted: 02/01/2019] [Indexed: 12/12/2022] Open
Abstract
As microbiological diagnostic techniques improve and the frequency of nontuberculous mycobacterial pulmonary disease (NTM-PD) infection increases worldwide, NTM-PD is becoming increasingly important to clinicians and researchers. Vitamin activity has been associated with the host immune response in tuberculosis; however, such information is very limited in NTM-PD. We performed a case-control study in 150 patients with NTM-PD and 150 healthy controls to investigate serum vitamin status. We measured concentrations of vitamins A, D, and E along with homocysteine and methylmalonic acid (MMA) as indicators of vitamin B12 deficiency, using high-performance liquid chromatography (HPLC) or HPLC-tandem mass spectrometry. The serum concentrations of vitamins A and E were significantly lower in patients with NTM-PD than in healthy controls (1.5 vs. 2.1 µmol/L, p < 0.01 for vitamin A; and 27.3 vs. 33.1 µmol/L, p < 0.01 for vitamin E). In contrast, the serum concentrations of vitamin D and homocysteine were not significantly different between the two groups. Vitamin A deficiency (< 1.05 µmol/L) was significantly more prevalent in patients with NTM-PD than in healthy controls (p < 0.01) and was associated with an 11-fold increase in risk of NTM-PD. Multiple vitamin deficiencies were only observed in patients with NTM-PD (7.3% of all NTM-PD patients). Positive correlations were observed among vitamins (vitamins A and D; r = 0.200, p < 0.05; vitamins D and E, r = 0.238, p < 0.05; vitamins A and E, r = 0.352, p < 0.05). Serum vitamin status, demographic variables, and biochemical indicators were not associated with treatment outcomes. Vitamin A deficiency was strongly associated with patients with NTM-PD. Our study suggests that altered vitamin status is associated with mycobacterial disease. Future well-designed prospective studies with large patient cohorts addressing these issues are needed to clarify the significance of vitamins in NTM-PD.
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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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Kotsi E, Kotsi E, Perrea DN. Vitamin D levels in children and adolescents with attention-deficit hyperactivity disorder (ADHD): a meta-analysis. ACTA ACUST UNITED AC 2018; 11:221-232. [PMID: 30367389 DOI: 10.1007/s12402-018-0276-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 10/17/2018] [Indexed: 02/07/2023]
Abstract
The aim of this article was to assess the differences in serum 25(OH)D levels between children and adolescents with attention-deficit/hyperactivity disorder (ADHD) and healthy controls. We used the PubMed (1966-2017), Scopus (2004-2017), ClinicalTrials.gov (2008-2017), Cochrane Central Register of Controlled Trials CENTRAL (2000-2017), and Google Scholar (2004-2017) databases. Statistical meta-analysis was performed with RevMan 5.3. Εight studies were finally included in the present meta-analysis with a total number of 11,324 children. Among them, 2655 were diagnosed with ADHD, while the remaining 8669 were recruited as healthy controls. All eight trials reported significantly lower serum concentrations of 25(OH)D in patients diagnosed with ADHD compared to healthy controls. The pooled data showed that there was a significant difference between the ADHD group and the control group (SMD = - 0.73, 95% CI [- 1.00, - 0.46]). The systematic review and meta-analysis of observational studies demonstrated an inverse association between serum 25(OH)D and young patients with ADHD. Large cohort studies are required to investigate whether vitamin D-deficient infants are more likely to develop ADHD in the future. Also, whether children with ADHD should be supplemented with higher doses of vitamin D3 remains to be confirmed through long-term controlled clinical trials.
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Affiliation(s)
- Evangelia Kotsi
- Laboratory of Experimental Surgery and Surgical Research N.S. Christeas, National and Kapodistrian University of Athens, Athens, Greece.
| | - Elisavet Kotsi
- Laboratory of Experimental Surgery and Surgical Research N.S. Christeas, National and Kapodistrian University of Athens, Athens, Greece
| | - Despina N Perrea
- Laboratory of Experimental Surgery and Surgical Research N.S. Christeas, National and Kapodistrian University of Athens, Athens, Greece
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21
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Mineva EM, Sternberg MR, Pfeiffer CM, Momin SS, Maw KL, Schleicher RL. Quality specifications and their daily application to evaluate the accuracy of reference measurements for serum concentrations of 25-hydroxyvitamin D 3 and 25-hydroxyvitamin D 2. Clin Chim Acta 2018; 487:241-249. [PMID: 30292631 DOI: 10.1016/j.cca.2018.10.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 10/02/2018] [Accepted: 10/03/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND Reference measurement procedures (RMP) have rigorous accuracy specifications. For total 25-hydroxyvitamin D, 25(OH)D, bias ≤1.7% and CV ≤5% are recommended. These quality specifications are impractical for minor analytes, such as 25(OH)D2. Furthermore, documentation on RMP quality performance specifications for the individual 25(OH)D metabolites and their daily application are missing. METHODS To assess accuracy, we used zeta-scores. Daily, 5-10 specimens (duplicate) and 3 reference materials (singleton or duplicate) were measured for 25(OH)D3 and 25(OH)D2 using JCTLM-accepted LC-MS/MS RMPs. Protocols were repeated on 3-4 occasions to generate campaign results. We used separate zeta-score acceptability criteria for daily (≤|2|) and campaign (≤|1|) evaluations. Allowable imprecision was determined experimentally. RESULTS Across 7 campaigns, unacceptable daily zeta-scores required repeating 2 runs for 25(OH)D3 and 5 runs for 25(OH)D2. Hence, the zeta-scores of acceptable reference material results indicated high accuracy. The allowable imprecision for the RMPs was ≤5% (daily) and ≤ 3% (campaign) for 25(OH)D3 and ≤ 7% (daily) and ≤ 4% (campaign) for 25(OH)D2, respectively. CONCLUSIONS Using zeta-scores and experimentally derived imprecision, we developed a straightforward approach to assess the acceptability of individual 25(OH)D reference measurements, providing also much-needed practical accuracy specifications for 25(OH)D2.
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Affiliation(s)
- Ekaterina M Mineva
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, United States
| | - Maya R Sternberg
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, United States
| | - Christine M Pfeiffer
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, United States
| | - Shahzad S Momin
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, United States
| | - Khin L Maw
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, United States
| | - Rosemary L Schleicher
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA 30341, United States.
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22
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Sempos CT, Heijboer AC, Bikle DD, Bollerslev J, Bouillon R, Brannon PM, DeLuca HF, Jones G, Munns CF, Bilezikian JP, Giustina A, Binkley N. Vitamin D assays and the definition of hypovitaminosis D: results from the First International Conference on Controversies in Vitamin D. Br J Clin Pharmacol 2018; 84:2194-2207. [PMID: 29851137 PMCID: PMC6138489 DOI: 10.1111/bcp.13652] [Citation(s) in RCA: 187] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 05/11/2018] [Accepted: 05/17/2018] [Indexed: 01/02/2023] Open
Abstract
The First International Conference on Controversies in Vitamin D was held in Pisa, Italy, 14-16 June 2017. The meeting's purpose was to address controversies in vitamin D research, review the data available, to help resolve them, and suggest a research agenda to clarify areas of uncertainty. The serum 25-hydroxyvitamin D [25(OH)D] concentration [i.e. the sum of 25(OH)D3 and 25(OH)D2 ] remains the critical measurement for defining vitamin D status. Assay variation for 25(OH)D has contributed to the current chaos surrounding efforts to define hypovitaminosis D. An essential requirement to develop a consensus on vitamin D status is that measurement of 25(OH)D and, in the future, other potential vitamin D biomarkers [e.g. 1α,25(OH)2 D3 , 3-epi-25(OH)D, 24,25(OH)2 D3, vitamin D-binding protein, free/bioavailable 25(OH)D and parathyroid hormone] be standardized/harmonized, to allow pooling of research data. Vitamin D Standardization Program tools are described and recommended for standardizing 25(OH)D measurement in research. In the future, similar methodology, based on National Institute for Standards and Technology standard reference materials, must be developed for other candidate markers of vitamin D status. Failure to standardize/harmonize vitamin D metabolite measurements is destined to promulgate continued chaos. At this time, 25(OH)D values below 12 ng ml-1 (30 nmol l-1 ) should be considered to be associated with an increased risk of rickets/osteomalacia, whereas 25(OH)D concentrations between 20 ng ml-1 and 50 ng ml-1 (50-125 nmol l-1 ) appear to be safe and sufficient in the general population for skeletal health. In an effort to bridge knowledge gaps in defining hypovitaminosis D, an international study on rickets as a multifactorial disease is proposed.
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Affiliation(s)
| | - Annemieke C. Heijboer
- Endocrine Laboratory, Department of Clinical ChemistryVU University Medical CenterAmsterdamThe Netherlands
- Laboratory of EndocrinologyAcademic Medical CenterAmsterdamThe Netherlands
| | - Daniel D. Bikle
- San Francisco, San Francisco Department of Veterans Affairs Medical Center, Endocrine Research UnitUniversity of CaliforniaSan FranciscoCAUSA
| | - Jens Bollerslev
- Section of Specialized Endocrinology, Department of EndocrinologyOslo University Hospital, RikshospitaletOsloNorway
- Faculty of MedicineUniversity of OsloOsloNorway
| | - Roger Bouillon
- Department of Chronic Diseases, Metabolism and AgeingLaboratory of Clinical and Experimental EndocrinologyKULeuvenBelgium
| | | | - Hector F. DeLuca
- Department of BiochemistryUniversity of Wisconsin‐MadisonMadisonWIUSA
| | - Glenville Jones
- Department of Biomedical and Molecular SciencesQueen's UniversityKingstonONCanada
| | - Craig F. Munns
- Institute of Endocrinology and DiabetesThe Children's Hospital at WestmeadSydneyNSWAustralia
| | - John P. Bilezikian
- Department of Medicine, Endocrinology Division, College of Physicians and SurgeonsColumbia UniversityNew YorkNYUSA
| | - Andrea Giustina
- Division of EndocrinologySan Raffaele University HospitalMilanItaly
| | - Neil Binkley
- Osteoporosis Clinical Research Program and Institute on AgingUniversity of Wisconsin‐MadisonMadisonWIUSA
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Abstract
Vitamin D has been associated with many health conditions. Because of widespread deficiency in the general population, laboratory testing of vitamin D has increased exponentially in recent years. Currently, 25-hydroxyvitamin D (25[OH]D) is considered the best marker of vitamin D status. Automated immunoassays and tandem mass spectrometry are the most widely used assays for the measurement of 25(OH)D. Because a medical decision of vitamin D deficiency and treatment are made based on specific levels, it is important that different 25(OH)D assays are harmonized. Despite standardization efforts, significant differences remain among various methods and laboratories for the measurement of 25(OH)D.
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Affiliation(s)
- Uttam Garg
- Department of Pathology and Laboratory Medicine, Children's Mercy Hospital, University of Missouri School of Medicine, 2401 Gillham Road, Kansas City, MO 64108, USA.
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24
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Ciepiela P, Dulęba AJ, Kowaleczko E, Chełstowski K, Kurzawa R. Vitamin D as a follicular marker of human oocyte quality and a serum marker of in vitro fertilization outcome. J Assist Reprod Genet 2018; 35:1265-1276. [PMID: 29774457 PMCID: PMC6063829 DOI: 10.1007/s10815-018-1179-4] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 04/05/2018] [Indexed: 12/31/2022] Open
Abstract
PURPOSE This study investigated the relationship between the vitamin D [25(OH)D] level in individual follicles and oocyte developmental competence. METHODS A prospective cohort study in a private infertility center. Infertile women (N = 198) scheduled for intracytoplasmic sperm injection (ICSI) and a single embryo transfer (SET) provided serum samples and 322 follicular fluid (FF) specimens, each from a single follicle on the day of oocyte retrieval. RESULTS FFs corresponding to successfully fertilized oocytes (following ICSI) contained significantly lower 25(OH)D level compared with those that were not fertilized (28.4 vs. 34.0 ng/ml, P = 0.001). Top quality embryos on the third day after fertilization, when compared to other available embryos, developed from oocytes collected from follicles containing significantly lower 25(OH)D levels (24.56 vs. 29.59 ng/ml, P = 0.007). Positive hCG, clinical pregnancy, and live birth rates were achieved from embryos derived from oocytes that grew in FF with significantly lower 25(OH)D levels than in follicles not associated with subsequent pregnancy. The concentration of 25(OH)D in FF in women with negative hCG was 32.23 ± 20.21 ng/ml, positive hCG 23.62 ± 6.09 ng/ml, clinical pregnancy 23.13 ± 6.09 ng/ml, and live birth 23.45 ± 6.11 ng/ml (P < 0.001). Women with serum 25(OH)D < 20 ng/ml had not only a higher fertilization rate (71 vs. 61.6%, P = 0.026) and a higher clinical pregnancy rate (48.2 vs. 25%, P = 0.001), but also higher miscarriage rate (14.5 vs. 3.8%, P = 0.013) compared with those with levels ≥ 20 ng/ml. CONCLUSION This study reveals that the level of 25(OH)D in FF correlates negatively with the oocytes' ability to undergo fertilization and subsequent preimplantation embryo development. Oocytes matured in FF with low 25(OH)D concentration are more likely to produce top quality embryos and are associated with higher pregnancy and delivery rates. On the other hand, low serum vitamin D concentration is associated with higher miscarriage rates.
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Affiliation(s)
- Przemysław Ciepiela
- Department of Gynecology and Reproductive Health, Pomeranian Medical University, 48 Żołnierska St., 71-210, Szczecin, Poland
- VitroLive Fertility Clinic, 2A Kasprzaka St., 71-074, Szczecin, Poland
| | - Antoni J Dulęba
- Division of Reproductive Endocrinology and Infertility, University of California, San Diego, 3350 La Jolla Village Dr, San Diego, CA, 92161, USA
| | | | - Kornel Chełstowski
- Department of Laboratory Diagnostics and Molecular Medicine, Pomeranian Medical University, 72 Powstańców Wielkopolskich Ave., 70-111, Szczecin, Poland
| | - Rafał Kurzawa
- Department of Gynecology and Reproductive Health, Pomeranian Medical University, 48 Żołnierska St., 71-210, Szczecin, Poland.
- VitroLive Fertility Clinic, 2A Kasprzaka St., 71-074, Szczecin, Poland.
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Jones A, Nair-Shalliker V, Dennis GR, Andrew Shalliker R. The future of liquid chromatographic separations should include post column derivatisations: A discussion view point based on the perspective for the analysis of vitamin D. Microchem J 2018. [DOI: 10.1016/j.microc.2018.01.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Low concentrations of 25-hydroxyvitamin D and long-term prognosis of COPD: a prospective cohort study. Eur J Epidemiol 2018; 33:567-577. [PMID: 29691706 DOI: 10.1007/s10654-018-0393-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 04/02/2018] [Indexed: 10/17/2022]
Abstract
Role and importance of vitamin D deficiency in long-term prognosis of chronic obstructive pulmonary disease (COPD) still remains undetermined. We tested the hypothesis that among individuals with COPD, those with low concentrations of 25-hydroxyvitamin D have a poorer prognosis compared to those with normal concentrations. We studied 35,153 individuals from the general population aged 20-100 years with 25-hydroxyvitamin D measurements and spirometry, the Copenhagen City Heart Study [median follow-up 21 years (range 13 days-36 years)] and the Copenhagen General Population Study [7.1 years (3 days-13 years)]. Spirometric COPD (n = 5178; 15% of all) was defined as forced expiratory volume in 1 s (FEV1)/forced vital capacity (FVC) < 0.70 in individuals without asthma and clinical COPD (n = 2033; 6%) as FEV1/FVC < 0.70 and FEV1 < 80% of predicted in ever-smokers aged > 40 years without asthma and with cumulative tobacco consumption ≥ 10 pack-years. In spirometric COPD, median age at death in years was 70.2 (95% confidence interval [CI] 64.4-71.2) for individuals with 25-hydroxyvitamin D < 12.5 nmol/L and 80.3 (74.4-83.4) for those with ≥ 50 nmol/L. In clinical COPD, corresponding values were 69.0 (63.3-70.9) and 76.2 (73.8-78.0). In spirometric COPD, multivariable adjusted hazard ratios for individuals with 25-hydroxyvitamin D < 12.5 nmol/L versus those with ≥ 50 nmol/L were 1.35 (95% CI 1.09-1.67) for all-cause mortality, 1.63 (1.00-2.64) for respiratory mortality, 1.14 (0.76-1.70) for cardiovascular mortality, 1.37 (0.90-2.06) for cancer mortality, and 1.61 (1.04-2.49) for other mortality. In clinical COPD, corresponding values were 1.39 (1.07-1.82), 1.57 (0.91-2.72), 0.88 (0.51-1.53), 1.63 (0.99-2.67), and 2.00 (1.12-3.56). Low concentrations of 25-hydroxyvitamin D were associated with an increased risk of death in individuals with COPD. No clear pattern of association could be observed for cause of death; however, there may be an increased risk of respiratory, cancer, and other mortality. It is likely that low concentrations of 25-hydroxyvitamin D is a marker of poor health in COPD.
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Data for the measurement of serum vitamin D metabolites in childhood acute lymphoblastic leukemia survivors. Data Brief 2018; 18:1427-1432. [PMID: 29900323 PMCID: PMC5997893 DOI: 10.1016/j.dib.2018.04.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 02/24/2018] [Accepted: 04/10/2018] [Indexed: 11/22/2022] Open
Abstract
This article describes data related to a companion research paper entitled “Vitamin D nutritional status and bone turnover biomarkers in childhood acute lymphoblastic leukemia (cALL) survivors.” (Delvin et al., submitted for publication) [1]. Various methods for the measurement of serum 25OHD3, the accepted biomarker for assessing vitamin D nutritional status, have been described (Le Goff et al., 2015; Jensen et al., 2016) [2], [3]. This article describes a novel mass spectrometry-QTOF method for the quantification of circulating 25OHD3, 3-epi-25OHD3 and 24,25(OH)2D3. It provides the description of the extraction, chromatography and mass spectrometry protocols, a sample of mass spectra obtained from standards and extracted serum, and a comparison with another HPLC-MS/MS (Jensen et al., 2016) [3] method for the measurement of serum concentrations of 25OHD3.
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Binkley N, Carter GD. Toward Clarity in Clinical Vitamin D Status Assessment: 25(OH)D Assay Standardization. Endocrinol Metab Clin North Am 2017; 46:885-899. [PMID: 29080641 DOI: 10.1016/j.ecl.2017.07.012] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Widespread variation in 25-hydroxyvitamin D (25(OH)D) assays continues to compromise efforts to develop clinical and public health guidelines regarding vitamin D status. The Vitamin D Standardization Program helps alleviate this problem. Reference measurement procedures and standard reference materials have been developed to allow current, prospective, and retrospective standardization of 25(OH)D results. Despite advances in 25(OH)D measurement, substantial variability in clinical laboratory 25(OH)D measurement persists. Existing guidelines have not used standardized data and, as a result, it seems unlikely that consensus regarding definitions of vitamin D deficiency, inadequacy, sufficiency, and excess will soon be reached. Until evidence-based consensus is reached, a reasonable clinical approach is advocated.
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Affiliation(s)
- Neil Binkley
- University of Wisconsin Osteoporosis Clinical Research Program, University of Wisconsin-Madison, 2870 University Avenue, Madison, WI 53705, USA.
| | - Graham D Carter
- Vitamin D External Quality Assessment Scheme (DEQAS), Imperial College Healthcare NHS Trust, Charing Cross Hospital, Fulham Palace Road, London W6 8RF, UK
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29
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Taylor CL, Sempos CT, Davis CD, Brannon PM. Vitamin D: Moving Forward to Address Emerging Science. Nutrients 2017; 9:E1308. [PMID: 29194368 PMCID: PMC5748758 DOI: 10.3390/nu9121308] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 11/15/2017] [Accepted: 11/27/2017] [Indexed: 12/19/2022] Open
Abstract
The science surrounding vitamin D presents both challenges and opportunities. Although many uncertainties are associated with the understandings concerning vitamin D, including its physiological function, the effects of excessive intake, and its role in health, it is at the same time a major interest in the research and health communities. The approach to evaluating and interpreting the available evidence about vitamin D should be founded on the quality of the data and on the conclusions that take into account the totality of the evidence. In addition, these activities can be used to identify critical data gaps and to help structure future research. The Office of Dietary Supplements (ODS) at the National Institutes of Health has as part of its mission the goal of supporting research and dialogues for topics with uncertain data, including vitamin D. This review considers vitamin D in the context of systematically addressing the uncertainty and in identifying research needs through the filter of the work of ODS. The focus includes the role of systematic reviews, activities that encompass considerations of the totality of the evidence, and collaborative activities to clarify unknowns or to fix methodological problems, as well as a case study using the relationship between cancer and vitamin D.
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Affiliation(s)
- Christine L Taylor
- Office of Dietary Supplements, National Institutes of Health, Room 3B01, 6100 Executive Boulevard, Bethesda, MD 20892, USA.
| | - Christopher T Sempos
- Office of Dietary Supplements, National Institutes of Health, Room 3B01, 6100 Executive Boulevard, Bethesda, MD 20892, USA.
| | - Cindy D Davis
- Office of Dietary Supplements, National Institutes of Health, Room 3B01, 6100 Executive Boulevard, Bethesda, MD 20892, USA.
| | - Patsy M Brannon
- Division of Nutritional Sciences, 225 Savage Hall, Cornell University, Ithaca, NY 14853, USA.
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Mirhosseini N, Vatanparast H, Mazidi M, Kimball SM. The Effect of Improved Serum 25-Hydroxyvitamin D Status on Glycemic Control in Diabetic Patients: A Meta-Analysis. J Clin Endocrinol Metab 2017; 102:3097-3110. [PMID: 28957454 DOI: 10.1210/jc.2017-01024] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 06/28/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Type 2 diabetes is a global health concern, with an increased prevalence and high cost of treatment. OBJECTIVE The aim of this systematic review and meta-analysis was to determine the effect of vitamin D supplementation and improved vitamin D status on glycemia and insulin resistance in type 2 diabetic patients. DATA SOURCE We searched PUBMED/Medline, Cumulative Index to Nursing and Allied Health, and Cochrane Library (until January 2017). STUDY SELECTION Prospective clinical trials were selected evaluating the impact of vitamin D supplementation on glycosylated hemoglobin (HbA1c), serum fasting plasma glucose (FPG), and homeostatic model assessment of insulin resistance (HOMA-IR) in diabetic patients. DATA EXTRACTION AND SYNTHESIS We used a random-effects model to synthesize quantitative data, followed by a leave-one-out method for sensitivity analysis. The systematic review registration was CRD42017059555. From a total of 844 entries identified via literature search, 24 controlled trials (1528 individuals diagnosed with type 2 diabetes) were included. The meta-analysis indicated a significant reduction in HbA1c [mean difference: -0.30%; 95% confidence interval (CI): -0.45 to -0.15, P < 0.001], FPG [mean difference: -4.9 mg/dL (-0.27 mmol/L); 95% CI: -8.1 to -1.6 (-0.45 to -0.09 mmol/L), P = 0.003], and HOMA-IR (mean difference: -0.66; 95% CI: -1.06 to -0.26, P = 0.001) following vitamin D supplementation and significant increase in serum 25-hydroxyvitamin D levels [overall increase of 17 ± 2.4 ng/mL (42 ± 6 nmol/L)]. CONCLUSIONS Vitamin D supplementation, a minimum dose of 100 µg/d (4000 IU/d), may significantly reduce serum FPG, HbA1c, and HOMA-IR index, and helps to control glycemic response and improve insulin sensitivity in type 2 diabetic patients.
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Affiliation(s)
| | - Hassanali Vatanparast
- College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5A2, Canada
| | - Mohsen Mazidi
- Key State Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
- Institute of Genetics and Developmental Biology, International College, University of Chinese Academy of Sciences, Beijing 100101, China
| | - Samantha M Kimball
- Pure North S'Energy Foundation, Calgary, Alberta T2R 0C5, Canada
- St. Mary's University, Calgary, Alberta T2X 1Z4, Canada
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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]
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Karvaly G, Mészáros K, Kovács K, Patócs A, Sipák Z, Vásárhelyi B. Looking beyond linear regression and Bland-Altman plots: a comparison of the clinical performance of 25-hydroxyvitamin D tests. ACTA ACUST UNITED AC 2017; 55:385-393. [DOI: 10.1515/cclm-2016-0536] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Accepted: 07/05/2016] [Indexed: 11/15/2022]
Abstract
AbstractBackground:The systematic evaluation of the clinical concordance of various 25-hydroxyvitamin D (25OHD) testing methods is presented. The need for this approach is raised by the discrepancies in the analytical performance of the available assays.Methods:The analytical and clinical performance of six automated 25OHD assays and an in-house liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was investigated. Leftover serum samples (n=162, SA: n=114) were analyzed and all 21 assay combinations were evaluated. The utility of Cohen’s κ values was assessed by transforming them into minimum percentage agreement (MPA). McNemar’s hypothesis test was employed for testing the symmetry of the disagreeing classification outcomes within each method pair.Results:Depending on the assay method, the ratio of results classified as positive (<20 ng/mL) was 13.5%–40.0%. The percentage agreement (PA) was 74.1%–92.6%. Compared to other methods, significantly more hypovitaminosis cases were delivered by DiaSorin Liaison® 25 OH vitamin D Total (DL) and significantly fewer by IDS-iSYS 25-Hydroxy Vitamin DS (II). The strongest clinical concordance was exerted by II vs. LC-MS/MS. The κ-derived MPA showed close similarity to the PA scores. McNemar’s tests confirmed the asymmetry of the disagreement in the classification in 14 method combinations.Conclusions:The presented approach allows the prediction of the clinical consequences of a 25OHD method transfer. Differences in the clinical classification of assay results are likely encountered when transferring to a new method, even between assays standardized according to the Vitamin D Standardization Program (VDSP) Reference Method Procedure (RMP).
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Jensen ME, Ducharme FM, Théorêt Y, Bélanger AS, Delvin E. Data in support for the measurement of serum 25-hydroxyvitamin D (25OHD) by tandem mass spectrometry. Data Brief 2016; 8:925-9. [PMID: 27508244 PMCID: PMC4961221 DOI: 10.1016/j.dib.2016.07.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/09/2016] [Accepted: 07/08/2016] [Indexed: 11/29/2022] Open
Abstract
This article provides data and a method related to a research paper entitled “Assessing vitamin D nutritional status: is capillary blood adequate?” (Jensen et al., 2016) [1]. Circulating 25OHD, the accepted biomarker of the vitamin D nutritional status, is routinely measured by automated immunoassays, that although may be performed in hospital central laboratories, often suffer from a lack of specificity with regards to the different vitamin D metabolites, “Measurement of circulating 25-hydroxyvitamin D: a historical review” (Le Goff et al., 2015) [2]. Mass spectrometry offers this specificity. This article describes the performance of an in-house tandem mass spectrometry method for the individual measurement of 25OHD3, 25OHD2 and 3-épi-25OHD3.
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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, 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, 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, Montreal, Canada
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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.
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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.
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