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Wise SA, Kuszak AJ, Camara JE. Evolution and impact of Standard Reference Materials (SRMs) for determining vitamin D metabolites. Anal Bioanal Chem 2024; 416:2335-2358. [PMID: 38236394 DOI: 10.1007/s00216-024-05143-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/19/2024]
Abstract
The National Institute of Standards and Technology (NIST), in collaboration with the National Institutes of Health, Office of Dietary Supplements (NIH ODS), introduced the first Standard Reference Material® (SRM) for determining vitamin D metabolites in 2009 motivated by significant concerns about the comparability and accuracy of different assays to assess vitamin D status. After 14 years, a suite of five serum matrix SRMs and three calibration solution SRMs are available. Values were also assigned for vitamin D metabolites in five additional SRMs intended primarily to support measurements of other clinical diagnostic markers. Both the SRMs and the certification approach have evolved from significant exogenous serum content to primarily endogenous content and from value assignment by combining the results of multiple analytical methods to the use of measurements exclusively from reference measurement procedures (RMPs). The impact of the availability of these SRMs can be assessed by both the distribution information (sales) and by reports in the scientific literature describing their use for method validation, quality control, and research. In this review, we describe the development of these SRMs, the evolution in design and value assignment, the expansion of information reported, and SRM use in validating analytical methods and providing quality assurance within the vitamin D measurement community.
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Affiliation(s)
- Stephen A Wise
- Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20817, USA.
| | - Adam J Kuszak
- Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20817, USA
| | - Johanna E Camara
- Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
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Devulapalli CS. Vitamin D concentrations were often insufficient among native Norwegian adolescents and children with a non-Western immigrant background. Acta Paediatr 2024; 113:411-416. [PMID: 38116881 DOI: 10.1111/apa.17078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 12/21/2023]
Abstract
AIM The aim of this study was to review papers that assessed the vitamin D intake of children living in Norway, as research has suggested that it has remained below the recommended daily allowance of 10 μg/day. METHODS This mini review examined the vitamin D status of Norwegian children aged 0-18 years by systematically searching the PubMed, Google Scholar and Scopus databases from 1 January 2009 to 1 July 2020. RESULTS The review comprised six studies published in English between 2009 and 2020 on native-born and non-Western immigrant children. Most studies defined satisfactory vitamin D status as a plasma 25-hydroxyvitamin D (25(OH)D) concentration of 50 nmol/L, with 25-50 nmol/L being classified as insufficient and below 25 nmol/L being classified as deficient. A study of healthy children found that 21% had insufficient levels and a further 1% were deficient, but this second finding was only among adolescents. Other studies showed that 47% of Norwegian children with a non-Western immigrant background were deficient, and so were 19% of overweight children, mainly adolescents. CONCLUSION Vitamin D concentrations were often insufficient among children living in Norway, particularly adolescents and those with a non-Western immigrant background. Higher recommended supplements may be needed.
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Öberg J, Jorde R, Almås B, Nielsen CS, Gerds TA, Cashman KD, Grimnes G. Vitamin D Status During Adolescence and the Impact of Lifestyle Changes: 2 Years' Follow-up From the Fit Futures Study. J Clin Endocrinol Metab 2024; 109:e1029-e1039. [PMID: 37955862 PMCID: PMC10876399 DOI: 10.1210/clinem/dgad655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 06/29/2023] [Accepted: 11/09/2023] [Indexed: 11/14/2023]
Abstract
CONTEXT Longitudinal data regarding vitamin D status in adolescence is scarce. This study presents population-based data from an Arctic adolescent population (n = 589) at 16 and 18 years. OBJECTIVE The aims of this study were to investigate changes in vitamin D status during 2 years in adolescence, and whether lifestyle changes were associated with serum 25-hydroxyvitamin D (s-25(OH)D) at follow-up. METHODS Fit Futures is a longitudinal study at 69°N in Norway. Participants had their s-25(OH)D levels analyzed in their first and third year of upper secondary school (median age 16 and 18 years), in Fit Futures 1 (FF1) and Fit Futures 2 (FF2), respectively. Self-reported lifestyle habits were registered through questionnaires. The association between lifestyle changes and s-25(OH)D levels at follow-up were calculated by regression analyses, controlling for baseline s-25(OH)D levels. RESULTS Longitudinal data were available for 309 girls and 280 boys. The proportion of adolescents with s-25(OH)D <50 nmol/L were 73.7% in FF1 and 77.1% in FF2, while the proportion <30 nmol/L constituted 35.7% in FF1 and 40.9% in FF2. Of those with s-25(OH)D <30 nmol/L (severe vitamin D deficiency) in FF1, 73.3% remained severely deficient in FF2. Among boys, an increase in UV exposure was significantly associated with higher s-25(OH)D levels in FF2 (beta; CI [nmol/L] 12.9; 9.1, 16.7). In girls, decreased vitamin/mineral supplement intake was significantly associated with lower s-25(OH)D at FF2 (-6.7; -10.2, -3.1), while increased UV (10.8; 7.0, 14.7) and combined hormonal contraceptive exposure (12.1; 6.0, 18.1) in FF2 was significantly associated with higher s-25(OH)D levels in FF2. CONCLUSION Severe vitamin D deficiency was prevalent throughout adolescence. Lifestyle changes may alter s-25(OH)D levels in this age group.
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Affiliation(s)
- Johanna Öberg
- Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Rolf Jorde
- Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
| | - Bjørg Almås
- Haukeland University Hospital, The Hormone Laboratory, N-5021 Bergen, Norway
| | - Christopher Sivert Nielsen
- Department of Chronic Diseases, Norwegian Institute of Public Health, N-0213 Oslo, Norway
- Department of Pain Management and Research, Oslo University Hospital, N-0318 Oslo, Norway
| | | | - Kevin D Cashman
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Guri Grimnes
- Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, N-9037 Tromsø, Norway
- Division of Internal Medicine, University Hospital of North Norway, N-9038 Tromsø, Norway
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Fischer PR, Johnson CR, Leopold KN, Thacher TD. Treatment of vitamin D deficiency in children. Expert Rev Endocrinol Metab 2023; 18:489-502. [PMID: 37861060 DOI: 10.1080/17446651.2023.2270053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 10/09/2023] [Indexed: 10/21/2023]
Abstract
INTRODUCTION Vitamin D deficiency affects from 10% to 50% in various pediatric population groups and causes life-threatening hypocalcemia in infants, crippling rickets in infants and children, and increased risk of subsequent adult metabolic and neurologic problems. AREAS COVERED An English language literature search of PubMed was performed since 1940 as were the authors' personal literature collections. References identified in the reviewed literature are considered. DIAGNOSIS The diagnosis of vitamin D deficiency is based on serum 25-hydroxyvitamin D levels. Clinical features of rickets include bone deformities and elevated alkaline phosphatase. Most children and adolescents who are biochemically vitamin D deficient do not have specific symptoms or signs of deficiency. PREVENTION Prevention of vitamin D deficiency is via exposure to sunshine, food and beverage fortification, and dietary supplementation. TREATMENT Effective treatment of vitamin D deficiency is via oral or injectable administration of vitamin D. Dosing and duration of vitamin D therapy have been described for healthy children and for children with underlying medical conditions, but recommendations vary. EXPERT OPINION Further investigation is needed to determine long-term non-skeletal effects of childhood vitamin D deficiency, benefits of supplementation in asymptomatic individuals with biochemical vitamin D deficiency, and appropriate screening for vitamin D deficiency in asymptomatic children and adolescents.
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Affiliation(s)
- Philip R Fischer
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN USA
- Sheikh Shakhbout Medical City, Abu Dhabi, UAE
- Khalifa University College of Health and Medical Science, Abu Dhabi, UAE
| | - Casey R Johnson
- Pediatric Gastroenterology and Nutrition, Boston Children's Hospital, Boston, MN, USA
| | - Kaitlin N Leopold
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN USA
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Turck D, Bohn T, Castenmiller J, de Henauw S, Hirsch‐Ernst K, Knutsen HK, Maciuk A, Mangelsdorf I, McArdle HJ, Pentieva K, Siani A, Thies F, Tsabouri S, Vinceti M, Lanham‐New S, Passeri G, Craciun I, Fabiani L, De Sousa RF, Martino L, Martínez SV, Naska A. Scientific opinion on the tolerable upper intake level for vitamin D, including the derivation of a conversion factor for calcidiol monohydrate. EFSA J 2023; 21:e08145. [PMID: 37560437 PMCID: PMC10407748 DOI: 10.2903/j.efsa.2023.8145] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2023] Open
Abstract
Following two requests from the European Commission (EC), the EFSA Panel on Nutrition, Novel Foods and Food Allergens (NDA) was asked to deliver a scientific opinion on the revision of the tolerable upper intake level (UL) for vitamin D and to propose a conversion factor (CF) for calcidiol monohydrate into vitamin D3 for labelling purposes. Vitamin D refers to ergocalciferol (vitamin D2), cholecalciferol (vitamin D3), and calcidiol monohydrate. Systematic reviews of the literature were conducted to assess the relative bioavailability of calcidiol monohydrate versus vitamin D3 on serum 25(OH)D concentrations, and for priority adverse health effects of excess vitamin D intake, namely persistent hypercalcaemia/hypercalciuria and endpoints related to musculoskeletal health (i.e. falls, bone fractures, bone mass/density and indices thereof). Based on the available evidence, the Panel proposes a CF for calcidiol monohydrates of 2.5 for labelling purposes. Persistent hypercalciuria, which may be an earlier sign of excess vitamin D than persistent hypercalcaemia, is selected as the critical endpoint on which to base the UL for vitamin D. A lowest-observed-adverse-effect-level (LOAEL) of 250 μg/day is identified from two randomised controlled trials in humans, to which an uncertainty factor of 2.5 is applied to account for the absence of a no-observed-adverse-effect-level (NOAEL). A UL of 100 μg vitamin D equivalents (VDE)/day is established for adults (including pregnant and lactating women) and for adolescents aged 11-17 years, as there is no reason to believe that adolescents in the phase of rapid bone formation and growth have a lower tolerance for vitamin D compared to adults. For children aged 1-10 years, a UL of 50 μg VDE/day is established by considering their smaller body size. Based on available intake data, European populations are unlikely to exceed the UL, except for regular users of food supplements containing high doses of vitamin D.
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Plantone D, Primiano G, Manco C, Locci S, Servidei S, De Stefano N. Vitamin D in Neurological Diseases. Int J Mol Sci 2022; 24. [PMID: 36613531 DOI: 10.3390/ijms24010087] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/16/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022] Open
Abstract
Vitamin D may have multiple effects on the nervous system and its deficiency can represent a possible risk factor for the development of many neurological diseases. Recent studies are also trying to clarify the different effects of vitamin D supplementation over the course of progressive neurological diseases. In this narrative review, we summarise vitamin D chemistry, metabolism, mechanisms of action, and the recommended daily intake. The role of vitamin D on gene transcription and the immune response is also reviewed. Finally, we discuss the scientific evidence that links low 25-hydroxyvitamin D concentrations to the onset and progression of severe neurological diseases, such as multiple sclerosis, Parkinson's disease, Alzheimer's disease, migraine, diabetic neuropathy and amyotrophic lateral sclerosis. Completed and ongoing clinical trials on vitamin D supplementation in neurological diseases are listed.
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Smirnova DV, Rehm CD, Fritz RD, Kutepova IS, Soshina MS, Berezhnaya YA. Vitamin D status of the Russian adult population from 2013 to 2018. Sci Rep 2022; 12:16604. [PMID: 36198864 DOI: 10.1038/s41598-022-21221-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 09/23/2022] [Indexed: 11/08/2022] Open
Abstract
Vitamin D deficiency is widespread globally, however available data for the Russian adult population is fragmented. This cross-sectional study used secondary data for individuals undergoing testing for vitamin D concentrations from 2013 to 2018 by InVitro laboratory. 25(OH)D serum concentration was determined using chemiluminescent microparticle immunoassay. The mean, median, and proportion with severe, deficient, insufficient and sufficient 25-hydroxyvitamin D (25(OH)D) concentrations were estimated. Splines examined the effect of latitude on 25(OH)D concentrations. Data were available for 30,040 subjects age ≥ 18 years. 24.2% of the sampled population had sufficient (30-< 150 25(OH)D ng/mL), 34% deficient (10-19.9 ng/mL) and 5.6% severely deficient (< 10 ng/mL) status. Average 25(OH)D concentrations were highest among 30-44 years and lowest amongst older adults; females had modestly higher values. Concentrations were 15% higher in fall/summer vs. winter/spring. A non-linear relationship was observed by latitude; the highest 25(OH)D concentrations were observed near 54°N, decreasing at more southern latitudes for women and more northern latitudes for both sexes. These results are comparable to other Northern European publications and limited Russian samples demonstrating low concentrations. Acknowledging that nationally-representative and randomly sampled data are needed, the present data suggest the burden may be high and identifies some population sub-groups and geographic areas with a higher potential deficiency of vitamin D.
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Öberg J, Jorde R, Figenschau Y, Thorsby PM, Dahl SR, Winther A, Grimnes G. 100 YEARS OF VITAMIN D: Combined hormonal contraceptives and vitamin D metabolism in adolescent girls. Endocr Connect 2022; 11:EC-21-0395. [PMID: 35213326 PMCID: PMC9002185 DOI: 10.1530/ec-21-0395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 02/25/2022] [Indexed: 12/05/2022]
Abstract
OBJECTIVE Combined hormonal contraceptive (CHC) use has been associated with higher total 25-hydroxyvitamin D (25(OH)D) levels. Here, we investigate the relation between CHC use and vitamin D metabolism to elucidate its clinical interpretation. METHODS The cross-sectional Fit Futures 1 included 1038 adolescents. Here, a subgroup of 182 girls with available 25(OH)D, 1,25-dihydroxyvitamin D (1,25(OH)2D), 24,25-dihydroxyvitamin D (24,25(OH)2D), vitamin D-binding protein (DBP) and measured free 25(OH)D levels, in addition to parathyroid hormone (PTH) and fibroblast growth factor 23 (FGF23), was investigated. Vitamin D metabolites were compared between girls using (CHC+) and not using CHC (CHC-). Further, the predictability of CHC on 25(OH)D levels was assessed in a multiple regression model including lifestyle factors. The ratios 1,25(OH)2D/25(OH)D and 24,25(OH)2D/25(OH)D (vitamin D metabolite ratio (VMR)) in relation to 25(OH)D were presented in scatterplots. RESULTS CHC+ (n = 64; 35% of the girls) had higher 25(OH)D levels (mean ± s.d., 60.3 ± 22.2) nmol/L) than CHC- (n = 118; 41.8 ± 19.3 nmol/L), P -values <0.01. The differences in 25(OH)D levels between CHC+ and CHC- were attenuated but remained significant after the adjustment of lifestyle factors. CHC+ also had higher levels of 1,25(OH)2D, 24,25(OH)2D, DBP and calcium than CHC-, whereas 1,25(OH)2D/25(OH)D, PTH, FGF23 and albumin were significantly lower. Free 25(OH)D and VMR did not statistically differ, and both ratios appeared similar in relation to 25(OH)D, irrespective of CHC status. CONCLUSION This confirms a clinical impact of CHC on vitamin D levels in adolescents. Our observations are likely due to an increased DBP-concentration, whereas the free 25(OH)D appears unaltered.
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Affiliation(s)
- Johanna Öberg
- Tromso Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromso, Norway
- Correspondence should be addressed to J Öberg:
| | - Rolf Jorde
- Tromso Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromso, Norway
| | - Yngve Figenschau
- Tromso Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromso, Norway
- Diagnostic Clinic, University Hospital of North Norway, Tromso, Norway
| | - Per Medbøe Thorsby
- Hormone Laboratory, Department of Medical Biochemistry and Biochemical Endocrinology and Metabolism Research Group, Oslo University Hospital, Aker, Oslo, Norway
| | - Sandra Rinne Dahl
- Hormone Laboratory, Department of Medical Biochemistry and Biochemical Endocrinology and Metabolism Research Group, Oslo University Hospital, Aker, Oslo, Norway
| | - Anne Winther
- Division of Neurosciences, Orthopedics and Rehabilitation Services, University Hospital of North Norway, Tromso, Norway
| | - Guri Grimnes
- Tromso Endocrine Research Group, Department of Clinical Medicine, UiT The Arctic University of Norway, Tromso, Norway
- Division of Internal Medicine, University Hospital of North Norway, Tromso, Norway
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Cashman KD, Kiely ME, Andersen R, Grønborg IM, Tetens I, Tripkovic L, Lanham-New SA, Lamberg-Allardt C, Adebayo FA, Gallagher JC, Smith LM, Sacheck JM, Huang Q, Ng K, Yuan C, Giovannucci EL, Rajakumar K, Patterson CG, Öhlund I, Lind T, Åkeson PK, Ritz C. Individual participant data (IPD)-level meta-analysis of randomised controlled trials to estimate the vitamin D dietary requirements in dark-skinned individuals resident at high latitude. Eur J Nutr 2022; 61:1015-34. [PMID: 34705075 DOI: 10.1007/s00394-021-02699-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 10/01/2021] [Indexed: 02/07/2023]
Abstract
CONTEXT AND PURPOSE There is an urgent need to develop vitamin D dietary recommendations for dark-skinned populations resident at high latitude. Using data from randomised controlled trials (RCTs) with vitamin D3-supplements/fortified foods, we undertook an individual participant data-level meta-regression (IPD) analysis of the response of wintertime serum 25-hydroxyvitamin (25(OH)D) to total vitamin D intake among dark-skinned children and adults residing at ≥ 40° N and derived dietary requirement values for vitamin D. METHODS IPD analysis using data from 677 dark-skinned participants (of Black or South Asian descent; ages 5-86 years) in 10 RCTs with vitamin D supplements/fortified foods identified via a systematic review and predefined eligibility criteria. Outcome measures were vitamin D intake estimates across a range of 25(OH)D thresholds. RESULTS To maintain serum 25(OH)D concentrations ≥ 25 and 30 nmol/L in 97.5% of individuals, 23.9 and 27.3 µg/day of vitamin D, respectively, were required among South Asian and 24.1 and 33.2 µg/day, respectively, among Black participants. Overall, our age-stratified intake estimates did not exceed age-specific Tolerable Upper Intake Levels for vitamin D. The vitamin D intake required by dark-skinned individuals to maintain 97.5% of winter 25(OH)D concentrations ≥ 50 nmol/L was 66.8 µg/day. This intake predicted that the upper 2.5% of individuals could potentially achieve serum 25(OH)D concentrations ≥ 158 nmol/L, which has been linked to potential adverse effects in older adults in supplementation studies. CONCLUSIONS Our IPD-derived vitamin D intakes required to maintain 97.5% of winter 25(OH)D concentrations ≥ 25, 30 and 50 nmol/L are substantially higher than the equivalent estimates for White individuals. These requirement estimates are also higher than those currently recommended internationally by several agencies, which are based predominantly on data from Whites and derived from standard meta-regression based on aggregate data. Much more work is needed in dark-skinned populations both in the dose-response relationship and risk characterisation for health outcomes. TRAIL REGISTRATION PROSPERO International Prospective Register of Systematic Reviews (Registration Number: CRD42018097260).
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Abstract
BACKGROUND Internationally, concern has been repeatedly raised about the little notable progress in the collection, analysis and use of population micronutrient status and deficiency data globally. The need for representative status and intake data for vitamin D has been highlighted as a research priority for well over a decade. AIM AND METHODS A narrative review which aims to provide a summary and assessment of vitamin D nutritional status data globally. This review divides the world into the Food and Agriculture Organisation's (FAO) major regions: the Americas, Europe, Oceania, Africa and Asia. Emphasis was placed on published data on the prevalence of serum 25-hydroxyvitamin D (25(OH)D) < 25/30 and <50 nmol/L (reflecting vitamin D deficiency and inadequacy, respectively) as well as vitamin D intake, where possible from nationally representative surveys. RESULTS Collating data from the limited number of available representative surveys from individual countries might suggest a relatively low overall prevalence of vitamin D deficiency in South America, Oceania and North America, whereas there is more moderate prevalence in Europe and Asia, and possibly Africa. Overall, the prevalence of serum 25(OH)D < 25/30 and <50 nmol/L ranges from ~5 to 18% and 24 to 49%, respectively, depending on FAO world region. Usual intakes of vitamin D can also vary by FAO world region, but in general, with a few exceptions, there are very high levels of inadequacy of vitamin D intake. CONCLUSIONS While the burden of vitamin D deficiency and inadequacy varies by world regions and not just by UVB availability, the global burden overall translates into enormous numbers of individuals at risk.
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Affiliation(s)
- Kevin D Cashman
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
- Correspondence should be addressed to K D Cashman:
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Bivona G, Gambino CM, Lo Sasso B, Scazzone C, Giglio RV, Agnello L, Ciaccio M. Serum Vitamin D as a Biomarker in Autoimmune, Psychiatric and Neurodegenerative Diseases. Diagnostics (Basel) 2022; 12:130. [PMID: 35054296 DOI: 10.3390/diagnostics12010130] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 02/05/2023] Open
Abstract
Vitamin D is a steroid hormone regulating calcium-phosphorus homeostasis, immune response and brain function. In the past thirty years, an increasing number of cohort studies, meta-analyses and randomized controlled trials (RTCs) evaluated the serum levels of 25-hydroxyvitamin D [25(OH)D], which is considered the Vitamin D status biomarker, in patients affected by neurological, psychiatric and autoimmune diseases. Although an association between low 25(OH)D serum levels and the prevalence of these diseases has been found, it is still unclear whether the serum 25(OH)D measurement can be clinically useful as a biomarker for diagnosis, prognosis and predicting treatment response in neurodegeneration, mental illness and immune-mediated disorders. The lack of standardized data, as well as discrepancies among the studies (in the analytical methods, cut-offs, endpoints and study sets), weakened the findings achieved, hindered pooling data, and, consequently, hampered drawing conclusions. This narrative review summarizes the main findings from the studies performed on serum 25(OH)D in neurological, psychiatric and autoimmune diseases, and clarifies whether or not serum 25(OH)D can be used as a reliable biomarker in these diseases.
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Toribio MJ, Priego-Capote F, Pérez-Gómez B, Fernández de Larrea-Baz N, Ruiz-Moreno E, Castelló A, Lucas P, Sierra MÁ, Pino MN, Martínez-Cortés M, Luque de Castro MD, Lope V, Pollán M. Factors Associated with Serum Vitamin D Metabolites and Vitamin D Metabolite Ratios in Premenopausal Women. Nutrients 2021; 13:3747. [PMID: 34836003 PMCID: PMC8621214 DOI: 10.3390/nu13113747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/21/2021] [Accepted: 10/22/2021] [Indexed: 11/16/2022] Open
Abstract
The most representative indicator of vitamin D status in clinical practice is 25(OH)D3, but new biomarkers could improve the assessment of vitamin D status and metabolism. The objective of this study is to investigate the association of serum vitamin D metabolites and vitamin D metabolite ratios (VMRs) with potentially influential factors in premenopausal women. This is a cross-sectional study based on 1422 women, aged 39-50, recruited from a Madrid Medical Diagnostic Center. Participants answered an epidemiological and a food frequency questionnaire. Serum vitamin D metabolites were determined using an SPE-LC-MS/MS platform. The association between participant's characteristics, vitamin D metabolites, and VMRs was quantified by multiple linear regression models. Mean 25(OH)D3 concentration was 49.2 + 18.9 nmol/L, with greater deficits among obese, nulliparous, dark-skinned women, and with less sun exposure. A lower R2 ratio (1,25(OH)2D3/25(OH)D3) and a higher R4 (24,25(OH)2D3/1,25(OH)2D3) were observed in nulliparous women, with high sun exposure, and those with low caloric intake or high consumption of calcium, vitamin D supplements, or alcohol. Nulliparous women had lower R1 (25(OH)D3/Vit D3) and R3 (24,25(OH)2D3/25(OH)D3), and older women showed lower R3 and R4. Vitamin D status modified the association of the VMRs with seasons. VMRs can be complementary indicators of vitamin D status and its endogenous metabolism, and reveal the influence of certain individual characteristics on the expression of hydroxylase enzymes.
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Affiliation(s)
- María José Toribio
- Servicio de Admisión, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain;
- Department of Preventive Medicine, Public Health and Microbiology, Universidad Autónoma de Madrid, 28029 Madrid, Spain
| | - Feliciano Priego-Capote
- Department of Analytical Chemistry, University of Córdoba, 14014 Córdoba, Spain; (F.P.-C.); (M.D.L.d.C.)
- Maimónides Institute of Biomedical Research (IMIBIC), Reina Sofia University Hospital, University of Córdoba, 14004 Córdoba, Spain
| | - Beatriz Pérez-Gómez
- Department of Epidemiology of Chronic Diseases, National Center for Epidemiology, Carlos III Institute of Health, 28029 Madrid, Spain; (B.P.-G.); (N.F.d.L.-B.); (E.R.-M.); (P.L.); (M.Á.S.); (M.P.)
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, 28029 Madrid, Spain
| | - Nerea Fernández de Larrea-Baz
- Department of Epidemiology of Chronic Diseases, National Center for Epidemiology, Carlos III Institute of Health, 28029 Madrid, Spain; (B.P.-G.); (N.F.d.L.-B.); (E.R.-M.); (P.L.); (M.Á.S.); (M.P.)
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, 28029 Madrid, Spain
| | - Emma Ruiz-Moreno
- Department of Epidemiology of Chronic Diseases, National Center for Epidemiology, Carlos III Institute of Health, 28029 Madrid, Spain; (B.P.-G.); (N.F.d.L.-B.); (E.R.-M.); (P.L.); (M.Á.S.); (M.P.)
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, 28029 Madrid, Spain
| | - Adela Castelló
- Faculty of Medicine, University of Alcalá, 28871 Alcalá de Henares, Spain;
| | - Pilar Lucas
- Department of Epidemiology of Chronic Diseases, National Center for Epidemiology, Carlos III Institute of Health, 28029 Madrid, Spain; (B.P.-G.); (N.F.d.L.-B.); (E.R.-M.); (P.L.); (M.Á.S.); (M.P.)
| | - María Ángeles Sierra
- Department of Epidemiology of Chronic Diseases, National Center for Epidemiology, Carlos III Institute of Health, 28029 Madrid, Spain; (B.P.-G.); (N.F.d.L.-B.); (E.R.-M.); (P.L.); (M.Á.S.); (M.P.)
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, 28029 Madrid, Spain
| | - Marina Nieves Pino
- Servicio de Prevención y Promoción de la Salud, Madrid Salud, Ayuntamiento de Madrid, 28007 Madrid, Spain; (M.N.P.); (M.M.-C.)
| | - Mercedes Martínez-Cortés
- Servicio de Prevención y Promoción de la Salud, Madrid Salud, Ayuntamiento de Madrid, 28007 Madrid, Spain; (M.N.P.); (M.M.-C.)
| | - María Dolores Luque de Castro
- Department of Analytical Chemistry, University of Córdoba, 14014 Córdoba, Spain; (F.P.-C.); (M.D.L.d.C.)
- Maimónides Institute of Biomedical Research (IMIBIC), Reina Sofia University Hospital, University of Córdoba, 14004 Córdoba, Spain
| | - Virginia Lope
- Servicio de Admisión, Hospital General Universitario Gregorio Marañón, 28007 Madrid, Spain;
- Department of Epidemiology of Chronic Diseases, National Center for Epidemiology, Carlos III Institute of Health, 28029 Madrid, Spain; (B.P.-G.); (N.F.d.L.-B.); (E.R.-M.); (P.L.); (M.Á.S.); (M.P.)
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, 28029 Madrid, Spain
| | - Marina Pollán
- Department of Epidemiology of Chronic Diseases, National Center for Epidemiology, Carlos III Institute of Health, 28029 Madrid, Spain; (B.P.-G.); (N.F.d.L.-B.); (E.R.-M.); (P.L.); (M.Á.S.); (M.P.)
- Consortium for Biomedical Research in Epidemiology & Public Health, CIBERESP, 28029 Madrid, Spain
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Siddiqee MH, Bhattacharjee B, Siddiqi UR, MeshbahurRahman M. High prevalence of vitamin D deficiency among the South Asian adults: a systematic review and meta-analysis. BMC Public Health 2021; 21:1823. [PMID: 34627207 PMCID: PMC8501935 DOI: 10.1186/s12889-021-11888-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 09/20/2021] [Indexed: 11/15/2022] Open
Abstract
Background Vitamin-D deficiency is linked to a wide range of chronic and infectious diseases. Body of literature suggested that the prevalence of this deficiency can have geographical variation. Although vitamin D deficiency is frequently reported in the South Asian population, the scarcity of systematic reviews and meta-analysis means the true extent of the disease and the underlying factors causing it are poorly characterized. Methods A systematic search was performed using two databases (PubMed and Scopus) and one search engine (Google Scholar) for original studies on the South Asian population (published from January 1, 2001, to December 31, 2019). Following the search, a random effect meta-analysis was performed to calculate population-level weighted average, the pooled prevalence of deficiency, and heterogeneity of vitamin D among different countries and genders; in addition to South Asia as a whole. Results Our study, based on our selection criteria was narrowed down to a total of 44,717 participants; which spanned over 65 studies from five South Asian countries. Overall, the pooled prevalence of deficiency was 68% [95% CI: 64 to 72%] with significant heterogeneity (I2 = 98%; p = 0.00). The average level of vitamin D ranged from 4.7 to 32 ng/mL, with a weighted mean of 19.15 ng/mL (weighted standard deviation 11.59 ng/mL). The highest prevalence of vitamin D deficiency was found in Pakistan (73%;95% CI: 63 to 83%) followed by Bangladesh (67%; 95% CI: 50 to 83%), India (67%; 95% CI: 61 to 73%), Nepal (57%; 95% CI: 53 to 60%) and Sri Lanka (48%; 95% CI: 41 to 55%), respectively. This finding indicated a high degree of heterogeneity among the population. (I2 = 98.76%), Furthermore, a gender-wise analysis suggested that in South Asia, the prevalence of vitamin D deficiency was higher in females than males. Conclusion Our findings reveal highly prevalent and variable vitamin D deficiency among the adults of different South Asian countries. Findings from this review would be helpful to generate hypotheses and explore the factors affecting the inter-country variability, alongside strengthening evidence for governments to prioritize mitigation strategies in this region. Supplementary Information The online version contains supplementary material available at 10.1186/s12889-021-11888-1.
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Affiliation(s)
- Mahbubul H Siddiqee
- School of Data and Sciences, BRAC University, Dhaka, 1212, Bangladesh. .,Research and Development Wing, Red and White Innovations, Dhaka, 1216, Bangladesh.
| | - Badhan Bhattacharjee
- School of Data and Sciences, BRAC University, Dhaka, 1212, Bangladesh.,Research and Development Wing, Red and White Innovations, Dhaka, 1216, Bangladesh
| | - Umme Ruman Siddiqi
- Communicable Disease Control Unit, Directorate General of Health Services, Dhaka, 1212, Bangladesh
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15
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Yoon BW, Shin HT, Seo J. Risk Allele Frequency Analysis of Single-Nucleotide Polymorphisms for Vitamin D Concentrations in Different Ethnic Group. Genes (Basel) 2021; 12:genes12101530. [PMID: 34680925 PMCID: PMC8536051 DOI: 10.3390/genes12101530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 01/08/2023] Open
Abstract
The prevalence of vitamin D deficiency varies from 20.8% to 61.6% among populations of different ethnicities, suggesting the existence of a genetic component. The purpose of this study was to provide insights into the genetic causes of vitamin D concentration differences among individuals of diverse ancestry. We collected 320 single-nucleotide polymorphisms (SNPs) associated with vitamin D concentrations from a genome-wide association studies catalog. Their population-level allele frequencies were derived based on the 1000 Genomes Project and Korean Reference Genome Database. We used Fisher's exact tests to assess the significance of the enrichment or depletion of the effect allele at a given SNP in the database. In addition, we calculated the SNP-based genetic risk score (GRS) and performed correlation analysis with vitamin D concentration that included latitude. European, American, and South Asian populations showed similar heatmap patterns, whereas African, East Asian, and Korean populations had distinct ones. The GRS calculated from allele frequencies of vitamin D concentration was highest among Europeans, followed by East Asians and Africans. In addition, the difference in vitamin D concentration was highly correlated with genetic factors rather than latitude effects.
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Affiliation(s)
- Byung-Woo Yoon
- Division of Oncology, Department of Internal Medicine, Inje University Seoul Paik Hospital, Seoul 04551, Korea;
| | - Hyun-Tae Shin
- Department of Dermatology, Inha University School of Medicine, Incheon 22212, Korea;
| | - Jehyun Seo
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul 05368, Korea
- Correspondence: ; Tel.: +82-2-2225-1445; Fax: +82-2-2225-3950
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16
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Camara JE, Wise SA, Hoofnagle AN, Williams EL, Carter GD, Jones J, Burdette CQ, Hahm G, Nalin F, Kuszak AJ, Merkel J, Durazo-Arvizu RA, Lukas P, Cavalier É, Popp C, Beckert C, Schultess J, Van Slooten G, Tourneur C, Pease C, Kaul R, Villarreal A, Ivison F, Fischer R, van den Ouweland JMW, Ho CS, Law EWK, Simard JN, Gonthier R, Holmquist B, Batista MC, Pham H, Bennett A, Meadows S, Cox L, Jansen E, Khan DA, Robyak K, Creer MH, Kilbane M, Twomey PJ, Freeman J, Parker N, Yuan J, Fitzgerald R, Mushtaq S, Clarke MW, Breen N, Simpson C, Sempos CT. Assessment of serum total 25-hydroxyvitamin D assay commutability of Standard Reference Materials and College of American Pathologists Accuracy-Based Vitamin D (ABVD) Scheme and Vitamin D External Quality Assessment Scheme (DEQAS) materials: Vitamin D Standardization Program (VDSP) Commutability Study 2. Anal Bioanal Chem 2021; 413:5067-5084. [PMID: 34184102 PMCID: PMC8431775 DOI: 10.1007/s00216-021-03470-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/29/2021] [Accepted: 06/09/2021] [Indexed: 10/21/2022]
Abstract
An interlaboratory study was conducted through the Vitamin D Standardization Program (VDSP) to assess commutability of Standard Reference Materials® (SRMs) and proficiency testing/external quality assessment (PT/EQA) samples for determination of serum total 25-hydroxyvitamin D [25(OH)D] using ligand binding assays and liquid chromatography-tandem mass spectrometry (LC-MS/MS). A set of 50 single-donor serum samples were assigned target values for 25-hydroxyvitamin D2 [25(OH)D2] and 25-hydroxyvitamin D3 [25(OH)D3] using reference measurement procedures (RMPs). SRM and PT/EQA samples evaluated included SRM 972a (four levels), SRM 2973, six College of American Pathologists (CAP) Accuracy-Based Vitamin D (ABVD) samples, and nine Vitamin D External Quality Assessment Scheme (DEQAS) samples. Results were received from 28 different laboratories using 20 ligand binding assays and 14 LC-MS/MS methods. Using the test assay results for total serum 25(OH)D (i.e., the sum of 25(OH)D2 and 25(OH)D3) determined for the single-donor samples and the RMP target values, the linear regression and 95% prediction intervals (PIs) were calculated. Using a subset of 42 samples that had concentrations of 25(OH)D2 below 30 nmol/L, one or more of the SRM and PT/EQA samples with high concentrations of 25(OH)D2 were deemed non-commutable using 5 of 11 unique ligand binding assays. SRM 972a (level 4), which has high exogenous concentration of 3-epi-25(OH)D3, was deemed non-commutable for 50% of the LC-MS/MS assays.
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Affiliation(s)
- Johanna E Camara
- Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
| | - Stephen A Wise
- Scientist Emeritus, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA.
- Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA.
| | - Andrew N Hoofnagle
- Department of Laboratory Medicine, University of Washington, Seattle, WA, 98185, USA
| | | | | | - Julia Jones
- Imperial Healthcare NHS Trust, London, W6 8RF, UK
| | - Carolyn Q Burdette
- Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
| | - Grace Hahm
- Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
| | - Federica Nalin
- Chemical Sciences Division, National Institute of Standards and Technology (NIST), Gaithersburg, MD, 20899, USA
| | - Adam J Kuszak
- Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - Joyce Merkel
- Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA
| | - Ramón A Durazo-Arvizu
- Biostatistics Core, The Sabin Research Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, 90027, USA
| | - Pierre Lukas
- Clinical Chemistry, University of Liège, CHU de Liège, 4000, Liège, Belgium
| | - Étienne Cavalier
- Clinical Chemistry, University of Liège, CHU de Liège, 4000, Liège, Belgium
| | - Christian Popp
- Abbott Laboratories, ADD Wiesbaden Abbott GmbH, 65205, Wiesbaden, Germany
| | - Christian Beckert
- Abbott Laboratories, ADD Wiesbaden Abbott GmbH, 65205, Wiesbaden, Germany
| | - Jan Schultess
- Abbott Laboratories, ADD Wiesbaden Abbott GmbH, 65205, Wiesbaden, Germany
| | | | | | | | - Ravi Kaul
- Clinical Diagnostics, Bio-Rad Laboratories, Clinical Diagnostics, Hercules, CA, 94547, USA
| | - Alfredo Villarreal
- Clinical Diagnostics, Bio-Rad Laboratories, Clinical Diagnostics, Hercules, CA, 94547, USA
| | - Fiona Ivison
- Central Manchester Foundation Trust, Manchester, M13 9WL, UK
| | - Ralf Fischer
- Chromsystems Instruments & Chemicals GmbH, 82166, Gräfelfing, Germany
| | | | - Chung S Ho
- Biomedical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, 999077, Hong Kong
| | - Emmett W K Law
- Biomedical Mass Spectrometry Unit, Department of Chemical Pathology, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, 999077, Hong Kong
| | | | | | - Brett Holmquist
- LabCorp Specialty Testing Group, Endocrine Sciences, Agoura Hills, CA, 91301, USA
| | | | - Heather Pham
- Immunodiagnostic Systems (IDS), Boldon, NE35 9PD, UK
| | - Alex Bennett
- Immunodiagnostic Systems (IDS), Boldon, NE35 9PD, UK
| | - Sarah Meadows
- Medical Research Council (MRC) Elsie Widdowson Laboratory (closed Dec. 2018), Cambridge, CB2 0SL, UK
- NIHR BRC Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, CB2 0SL, UK
| | - Lorna Cox
- Medical Research Council (MRC) Elsie Widdowson Laboratory (closed Dec. 2018), Cambridge, CB2 0SL, UK
- NIHR BRC Nutritional Biomarker Laboratory, MRC Epidemiology Unit, University of Cambridge, Cambridge, CB2 0SL, UK
| | - Eugene Jansen
- National Institute of Public Health and the Environment (RIVM), 3720 BA, Bilthoven, The Netherlands
| | - Dilshad Ahmed Khan
- National University of Medical Sciences (NUMS), Rawalpindi, Punjab, 46000, Pakistan
| | - Kimberly Robyak
- College of Medicine, Penn State University, Hershey, PA, 17033, USA
| | - Michael H Creer
- College of Medicine, Penn State University, Hershey, PA, 17033, USA
| | - Mark Kilbane
- Clinical Chemistry, St. Vincent's University Hospital, Elm Park, Dublin 4, D04 T6F4, Ireland
| | - Patrick J Twomey
- Clinical Chemistry, St. Vincent's University Hospital, Elm Park, Dublin 4, D04 T6F4, Ireland
| | | | - Neil Parker
- Siemens-Healthineers, Tarrytown, NY, 10591, USA
| | - Jinyun Yuan
- SNIBE, Shenzhen, 518122, People's Republic of China
| | - Robert Fitzgerald
- University of California at San Diego, Health Clinical Laboratories, La Jolla, CA, 92093, USA
| | | | - Michael W Clarke
- Metabolomics Australia, Centre for Microscopy, Characterisation and Analysis, The University of Western Australia, Perth, WA, 6009, Australia
| | - Norma Breen
- Waters Technologies Ireland Ltd., Wexford, Y35 D431, Ireland
| | | | - Christopher T Sempos
- Office of Dietary Supplements (ODS), National Institutes of Health (NIH), Bethesda, MD, 20892, USA
- Vitamin D Standardization Program LLC, Havre de Grace, MD, 21078, USA
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Werneke U, Gaughran F, Taylor DM. Vitamin D in the time of the coronavirus (COVID-19) pandemic - a clinical review from a public health and public mental health perspective. Ther Adv Psychopharmacol 2021; 11:20451253211027699. [PMID: 34290856 PMCID: PMC8274110 DOI: 10.1177/20451253211027699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 06/07/2021] [Indexed: 12/14/2022] Open
Abstract
Individuals with serious mental disorders (SMD) may have a higher risk of vitamin D (VIT-D) deficiency. They also experience higher mortality because of coronavirus disease 2019 (COVID-19) infection. Therefore, we have conducted a comprehensive review to examine the significance of VIT-D for public health and public mental health during the ongoing COVID-19 pandemic. This review had three specific aims, from a global perspective to (a) create a profile of VIT-D and review the epidemiology of VIT-D deficiency, (b) explore VIT-D deficiency as risk factor for SMD and COVID-19 infections and (c) examine the effectiveness of VIT-D supplementation for both conditions. We found that, in terms of SMD, the evidence from laboratory and observational studies points towards some association between VIT-D deficiency and depression or schizophrenia. Mendelian randomisation studies, however, suggest no, or reverse, causality. The evidence from intervention studies is conflicting. Concerning COVID-19 infection, on proof of principle, VIT-D could provide a plausible defence against the infection itself and against an adverse clinical course. But data from observational studies and the first preliminary intervention studies remain conflicting, with stronger evidence that VIT-D may mitigate the clinical course of COVID-19 infection rather than the risk of infection in the first place. From a public health and public mental health point of view, based on the currently limited knowledge, for individuals with SMD, the benefits of VIT-D optimisation through supplementation seem to outweigh the risks. VIT-D supplementation, however, should not substitute for vaccination or medical care for COVID-19 infection.
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Affiliation(s)
- Ursula Werneke
- Sunderby Research Unit – Psychiatry, Department of Clinical Sciences, Umeå University, Umeå, Sweden
| | - Fiona Gaughran
- Department of Psychosis Studies, Institute of Psychiatry, Psychology and Neuroscience, King’s College and National Psychosis Service, South London & the Maudsley NHS Foundation Trust, London, UK
| | - David M. Taylor
- Maudsley Hospital, Pharmacy Department Denmark Hill, King’s College London and Institute of Pharmaceutical Science, London, UK
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Tashkandi N, Zhao Y, Mitchell-Lee G, Stephens D, Patel M, Motro M, Will LA, Kantarci A. Longitudinal assessment of salivary vitamin D binding protein during orthodontic tooth movement. BMC Oral Health 2021; 21:332. [PMID: 34225707 PMCID: PMC8256539 DOI: 10.1186/s12903-021-01689-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 06/14/2021] [Indexed: 01/25/2023] Open
Abstract
Background Vitamin D is critical for bone physiology. In this study, we quantified Vitamin D Binding Protein (VitDBP) levels in saliva as a measure of Vitamin D during orthodontic tooth movement. Methods In this longitudinal study, saliva samples were collected from 73 orthodontic patients for 4 timepoints for the first six months of orthodontic treatment, along with dental casts at the beginning and the end of the study period. The saliva was measured for VitDBP as a biological marker for bone apposition and clinical tooth movement. We used the absolute change in Little's Irregularity Index as a quantitative measure for alignment. In addition, we measured the levels of alkaline phosphatase (ALP) in saliva as a marker of bone turnover. Results Both low (< 2.75 ng/ml) and high (> 6.48 ng/ml) VitDBP levels were associated with reduced tooth movement. Significant (p < 0.05) seasonal changes in VitDBP using a two-season year model were found with lower levels observed in the summer (Apr–Sept) than in the winter (Oct–Mar). Conclusions Clinically significant orthodontic tooth movement is associated with an optimal range of VitDBP in saliva. Normal levels of VitDBP correlated with more orthodontic tooth movement, suggesting a "normal" range of salivary content of VitDBP. Given the strong trend that is independent of the confounding factors (ex. age, race or gender), the predictive value or salivary VitDBP for tooth movement should be studied in larger cohorts in future studies.
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Affiliation(s)
- Nada Tashkandi
- Department of Applied Oral Sciences, Forsyth Institute, 245 First St, Cambridge, MA, 02142, USA.,Department of Orthodontics and Dentofacial Orthopedics, Boston University Henry M Goldman School of Dental Medicine, Boston, MA, USA
| | - Yihong Zhao
- Department of Applied Psychology, Center of Alcohol and Substance Use Studies, School of Applied and Professional Psychology, Rutgers University, New Brunswick, Piscataway, NJ, USA
| | - Gabrielle Mitchell-Lee
- Department of Orthodontics and Dentofacial Orthopedics, Boston University Henry M Goldman School of Dental Medicine, Boston, MA, USA
| | - Danielle Stephens
- Department of Applied Oral Sciences, Forsyth Institute, 245 First St, Cambridge, MA, 02142, USA
| | - Michele Patel
- Department of Applied Oral Sciences, Forsyth Institute, 245 First St, Cambridge, MA, 02142, USA
| | - Melih Motro
- Department of Orthodontics and Dentofacial Orthopedics, Boston University Henry M Goldman School of Dental Medicine, Boston, MA, USA
| | - Leslie A Will
- Department of Orthodontics and Dentofacial Orthopedics, Boston University Henry M Goldman School of Dental Medicine, Boston, MA, USA
| | - Alpdogan Kantarci
- Department of Applied Oral Sciences, Forsyth Institute, 245 First St, Cambridge, MA, 02142, USA. .,School of Dental Medicine, Harvard University, Boston, MA, USA.
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19
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Ingstad F, Solberg LB, Nordsletten L, Thorsby PM, Hestnes I, Frihagen F. Vitamin D status and complications, readmissions, and mortality after hip fracture. Osteoporos Int 2021; 32:873-881. [PMID: 33201249 DOI: 10.1007/s00198-020-05739-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/10/2020] [Indexed: 12/19/2022]
Abstract
UNLABELLED Low vitamin D in patients with hip fracture is common. In the present study, 407 of 872 (47%) patients had serum calcidiol less than 50 nmol/L. Patients with low vitamin D had more delirium, more new hip fractures, and more medical readmissions, but not more orthopedic complications after 1 year. INTRODUCTION We wanted to study the relation between vitamin D level and postoperative orthopedic and medical complications in patients with hip fracture. In addition, we investigated the effect of giving a single-dose cholecalciferol 100.000 IU. METHODS Data were taken from the local hip fracture register. Logistic regression analyses including vitamin D level and potentially confounding variables were performed for complications and readmissions. RESULTS A total of 407 (47%) of 872 included hip fractures had low vitamin D at baseline. A total of 155 (18%) developed delirium, and the risk was higher in vitamin D-deficient patients (odds ratio (OR) 1.48, 95% confidence interval (CI) 1.04 to 2.12; p = 0.03). A total of 261 (30%) were readmitted for non-hip-related conditions. Low vitamin D was associated with a higher risk of medical readmissions within 30 days (OR 1.64 (1.03 to 2.61); p = 0.036) and 12 weeks (OR 1.47 (95% CI 1.02 to 2.12); p = 0.039). There was a higher risk of a new hip fracture (OR 2.84 (95% CI 1.15 to 7.03) p = 0.024) in vitamin D-deficient patients. A total of 105 (12%) developed at least one orthopedic complication, with no correlation to baseline vitamin D. Among vitamin D-deficient patients, those receiving a single-dose of 100.000 IU cholecalciferol had fewer orthopedic complications (OR 0.32 (95% CI 0.11 to 0.97) p = 0.044) the first 30 days after surgery. CONCLUSION Low vitamin D at admission for hip fracture increased the risk of delirium, a new hip fracture, and medical readmissions, but not orthopedic complications. The role of vitamin D supplementation to prevent orthopedic complications requires further study.
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Affiliation(s)
- F Ingstad
- Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway.
- University of Copenhagen, Copenhagen, Denmark.
| | - L B Solberg
- Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway
| | - L Nordsletten
- Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - P M Thorsby
- Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - I Hestnes
- Division of Orthopaedic Surgery, Oslo University Hospital, Oslo, Norway
| | - F Frihagen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Orthopaedic Surgery, Østfold Hospital Trust, Grålum, Norway
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Sallinen RJ, Dethlefsen O, Ruotsalainen S, Mills RD, Miettinen TA, Jääskeläinen TE, Lundqvist A, Kyllönen E, Kröger H, Karppinen JI, Lamberg-Allardt C, Viljakainen H, Kaunisto MA, Kallioniemi O. Genetic Risk Score for Serum 25-Hydroxyvitamin D Concentration Helps to Guide Personalized Vitamin D Supplementation in Healthy Finnish Adults. J Nutr 2021; 151:281-292. [PMID: 33382404 DOI: 10.1093/jn/nxaa391] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/26/2020] [Accepted: 11/13/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Genetic factors modify serum 25-hydroxyvitamin D [25(OH)D] concentration and can affect the optimal intake of vitamin D. OBJECTIVES We aimed to personalize vitamin D supplementation by applying knowledge of genetic factors affecting serum 25(OH)D concentration. METHODS We performed a genome-wide association study of serum 25(OH)D concentration in the Finnish Health 2011 cohort (n = 3339) using linear regression and applied the results to develop a population-matched genetic risk score (GRS) for serum 25(OH)D. This GRS was used to tailor vitamin D supplementation for 96 participants of a longitudinal Digital Health Revolution (DHR) Study. The GRS, serum 25(OH)D concentrations, and personalized supplementation and dietary advice were electronically returned to participants. Serum 25(OH)D concentrations were assessed using immunoassays and vitamin D intake using FFQs. In data analyses, cross-sectional and repeated-measures statistical tests and models were applied as described in detail elsewhere. RESULTS GC vitamin D-binding protein and cytochrome P450 family 2 subfamily R polypeptide 1 genes showed genome-wide significant associations with serum 25(OH)D concentration. One single nucleotide polymorphism from each locus (rs4588 and rs10741657) was used to develop the GRS. After returning data to the DHR Study participants, daily vitamin D supplement users increased from 32.6% to 60.2% (P = 6.5 × 10-6) and serum 25(OH)D concentration from 64.4 ± 20.9 nmol/L to 68.5 ± 19.2 nmol/L (P = 0.006) between August and November. Notably, the difference in serum 25(OH)D concentrations between participants with no risk alleles and those with 3 or 4 risk alleles decreased from 20.7 nmol/L to 8.0 nmol/L (P = 0.0063). CONCLUSIONS We developed and applied a population-matched GRS to identify individuals genetically predisposed to low serum 25(OH)D concentration. We show how the electronic return of individual genetic risk, serum 25(OH)D concentrations, and factors affecting vitamin D status can be used to tailor vitamin D supplementation. This model could be applied to other populations and countries.
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Affiliation(s)
- Riitta J Sallinen
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland.,Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Olga Dethlefsen
- National Bioinformatics Infrastructure Sweden, Science for Life Laboratory, Stockholm University, Stockholm, Sweden
| | - Sanni Ruotsalainen
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland
| | - Robert D Mills
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland
| | - Timo A Miettinen
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland
| | - Tuija E Jääskeläinen
- Finnish Institute for Health and Welfare, Department of Public Health Solutions, Helsinki, Finland
| | - Annamari Lundqvist
- Finnish Institute for Health and Welfare, Department of Public Health Solutions, Helsinki, Finland
| | - Eero Kyllönen
- Physical and Rehabilitation Medicine Division, Oulu University Hospital, Oulu, Finland
| | - Heikki Kröger
- Department of Orthopaedics, Traumatology and Handsurgery, Kuopio University Hospital, Kuopio, Finland.,Kuopio Musculoskeletal Research Unit, Institute of Clinical Medicine, University of Eastern Finland, Kuopio, Finland
| | - Jaro I Karppinen
- Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland.,Finnish Institute of Occupational Health, Oulu, Finland
| | | | - Heli Viljakainen
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland.,Folkhälsan Research Center, Helsinki, Finland
| | - Mari A Kaunisto
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland
| | - Olli Kallioniemi
- Institute for Molecular Medicine Finland (FIMM), HiLIFE, University of Helsinki, Helsinki, Finland.,Science for Life Laboratory, Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden
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Sempos CT, Tian L. Adjusting Coronavirus Prevalence Estimates for Laboratory Test Kit Error. Am J Epidemiol 2021; 190:109-115. [PMID: 32803245 PMCID: PMC7454308 DOI: 10.1093/aje/kwaa174] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 08/07/2020] [Accepted: 08/12/2020] [Indexed: 02/07/2023] Open
Abstract
Testing representative populations to determine the prevalence or the percentage of the population with active severe acute respiratory syndrome coronavirus 2 infection and/or antibodies to infection is being recommended as essential for making public policy decisions to ease restrictions or to continue enforcing national, state, and local government rules to shelter in place. However, all laboratory tests are imperfect and have estimates of sensitivity and specificity less than 100%-in some cases, considerably less than 100%. That error will lead to biased prevalence estimates. If the true prevalence is low, possibly in the range of 1%-5%, then testing error will lead to a constant background of bias that most likely will be larger, and possibly much larger, than the true prevalence itself. As a result, what is needed is a method for adjusting prevalence estimates for testing error. Methods are outlined in this article for adjusting prevalence estimates for testing error both prospectively in studies being planned and retrospectively in studies that have been conducted. If used, these methods also would help harmonize study results within countries and worldwide. Adjustment can lead to more accurate prevalence estimates and to better policy decisions. However, adjustment will not improve the accuracy of an individual test.
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Affiliation(s)
- Christopher T Sempos
- Correspondence to: Dr. Christopher T. Sempos, Vitamin D Standardization Program, 520 Ferdinand Drive, Havre de Grace, MD 21078 ()
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Leão LMCS, Rodrigues BC, Dias PTP, Gehrke B, de Souza TDSP, Hirose CK, Freire MDC. Vitamin D status and prevalence of hypovitaminosis D in different genders throughout life stages: A Brazilian cross-sectional study. Clinics (Sao Paulo) 2021; 76:e2571. [PMID: 33852654 PMCID: PMC8009065 DOI: 10.6061/clinics/2021/e2571] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Accepted: 02/17/2021] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVES To evaluate the mean concentration of 25-hydroxivitamin D [25(OH) D] and prevalence of hypovitaminosis D in individuals residing in Rio de Janeiro, Brazil. METHODS The data of 80,000 consecutive individuals who had 25(OH) D measurements performed by electrochemiluminescence between 1/2/2018 and 2/5/2018 were selected. Patients who reported the use of therapies/supplements were excluded. Levels of 25(OH) D ≥20 ng/mL (ages <60 years) and ≥30 ng/mL (ages ≥60 years) were considered adequate. RESULTS We analyzed the data of 24,074 individuals (1-95 years old, 64.7% female). Descriptive curves showed that, in both sexes, the mean values of 25(OH) D decreased from the first years of life until adolescence, then slightly increased, and then tended to stabilize during adulthood. Levels of 25(OH) D <20 ng/mL were observed in 6% of girls versus 3.6% of boys and in 13.6% of adolescent girls versus 12.6% of adolescent boys and 11% of adults. The percentage of seniors with serum levels of 25(OH) D <20 ng/mL was 13.6% in women and 12.7% in men; 53.2% of women and 50.6% of men had levels <30 ng/mL. CONCLUSIONS Mean 25(OH) D values were higher in children and lower in adolescents and women. Approximately 90% of non-seniors and presumably healthy residents of the urban metropolitan region of Rio de Janeiro presented satisfactory levels of 25(OH) D during the summer months; however, in over half of the elderly, the serum concentrations of 25(OH) D were inadequate. Therefore, strategies for the prevention of hypovitaminosis D should be considered in the senior population.
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Affiliation(s)
- Lenora M. Camarate S.M. Leão
- Servico de Endocrinologia, Hospital Universitario Pedro Ernesto, Faculdade de Ciencias Medicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR
| | | | - Paulo Telles Pires Dias
- Nucleo de Estudos e Pesquisas em Atencao ao Uso de Drogas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR
- Departamento de Epidemiologia e Bioestatistica (MEB-ISC), Universidade Federal Fluminense, Niteroi, RJ, BR
| | - Bárbara Gehrke
- Programa de Pos-Graduacao em Fisiopatologia Clinica e Experimental (FISCLINEX), Faculdade de Ciencias Medicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, RJ, BR
- *Corresponding author. E-mail:
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23
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Moschonis G, Androutsos O, Hulshof T, Sarapis K, Dracopoulou M, Chrousos GP, Manios Y. Risk evaluation of vitamin D insufficiency or deficiency in children using simple scores: The Healthy Growth Study. Nutr Res 2021; 88:19-27. [PMID: 33743321 DOI: 10.1016/j.nutres.2020.12.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 11/21/2022]
Abstract
Although identification of population groups at high risk for low vitamin D status is of public health importance,there are no risk prediction tools available for children in Southern Europe that can cover this need. The present study aimed to develop and validate 2 simple scores that evaluate the risk for vitamin D insufficiency or deficiency in children. A cross-sectional epidemiological study was conducted among 2280 schoolchildren (9--13-year-old) living in Greece. The total sample was randomly divided into 2 subsamples of 1524 and 756 children, used in the development and validation of the 2 scores, respectively. Multivariate logistic regression analyses were used to develop the 2 risk evaluation scores, while receiver operating characteristic curves were employed to identify the optimal "points of change" for each risk score, upon which vitamin D insufficiency and deficiency is diagnosed with the highest possible sensitivity and specificity. The components of the 2 risk evaluation scores included children's age, gender, region of residence, screen-time, body weight status, maternal education, and season. The increase in each score by 1 unit elevated the likelihood for vitamin D insufficiency and deficiency by 31% and 28%, respectively. The receiver operating characteristic curves showed that the optimal "points of change" for each risk score, upon which vitamin D insufficiency or deficiency is diagnosed with the highest possible sensitivity and specificity were 8.5 and 12.5, respectively. In conclusion, this study developed 2 simple scores that evaluate the risk for vitamin D insufficiency or deficiency in children living in Greece. However, more studies are required for these scores to be validated in other populations of children from different countries.
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Cashman KD. Food-based strategies for prevention of vitamin D deficiency as informed by vitamin D dietary guidelines, and consideration of minimal-risk UVB radiation exposure in future guidelines. Photochem Photobiol Sci 2020; 19:800-809. [PMID: 33856673 PMCID: PMC8047520 DOI: 10.1039/c9pp00462a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 04/30/2020] [Indexed: 12/16/2022]
Abstract
There is widespread acknowledgement of the presence of vitamin D deficiency in the community and the pressing need to address this. From a public health perspective, emphasis has been placed on addressing vitamin D deficiency through dietary means. However, naturally rich food sources of vitamin D are few and infrequently consumed, and nutrition survey data from various countries have indicated that habitual vitamin D intakes in the community are much lower than the current vitamin D dietary guidelines. This review will briefly overview the extent of vitamin D deficiency within the community, its causes, and how our food chain, once its embraces the evidence-based practise of food fortification and potentially biofortification, can cater for meeting the dietary vitamin D needs of the community. Finally, international authorities, briefed with establishing vitamin D dietary guidelines over the past decade, have struggled with uncertainties and gaps in our understanding of the relative contribution of sunshine and diet to vitamin D status and vitamin D requirements for health maintenance. The review will also consider how emerging evidence of a possible minimal-risk UVB radiation exposure relative to skin cancer that also enables vitamin D production could greatly inform future vitamin D dietary guidelines.
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Affiliation(s)
- Kevin D Cashman
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland.
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26
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Ittermann T, Albrecht D, Arohonka P, Bilek R, de Castro JJ, Dahl L, Filipsson Nystrom H, Gaberscek S, Garcia-Fuentes E, Gheorghiu ML, Hubalewska-Dydejczyk A, Hunziker S, Jukic T, Karanfilski B, Koskinen S, Kusic Z, Majstorov V, Makris KC, Markou KB, Meisinger C, Milevska Kostova N, Mullen KR, Nagy EV, Pirags V, Rojo-Martinez G, Samardzic M, Saranac L, Strele I, Thamm M, Top I, Trofimiuk-Müldner M, Ünal B, Koskinen S, Vila L, Vitti P, Winter B, Woodside JV, Zaletel K, Zamrazil V, Zimmermann M, Erlund I, Völzke H. Standardized Map of Iodine Status in Europe. Thyroid 2020; 30:1346-1354. [PMID: 32460688 DOI: 10.1089/thy.2019.0353] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Background: Knowledge about the population's iodine status is important, because it allows adjustment of iodine supply and prevention of iodine deficiency. The validity and comparability of iodine-related population studies can be improved by standardization, which was one of the goals of the EUthyroid project. The aim of this study was to establish the first standardized map of iodine status in Europe by using standardized urinary iodine concentration (UIC) data. Materials and Methods: We established a gold-standard laboratory in Helsinki measuring UIC by inductively coupled plasma mass spectrometry. A total of 40 studies from 23 European countries provided 75 urine samples covering the whole range of concentrations. Conversion formulas for UIC derived from the gold-standard values were established by linear regression models and were used to postharmonize the studies by standardizing the UIC data of the individual studies. Results: In comparison with the EUthyroid gold-standard, mean UIC measurements were higher in 11 laboratories and lower in 10 laboratories. The mean differences ranged from -36.6% to 49.5%. Of the 40 postharmonized studies providing data for the standardization, 16 were conducted in schoolchildren, 13 in adults, and 11 in pregnant women. Median standardized UIC was <100 μg/L in 1 out of 16 (6.3%) studies in schoolchildren, while in adults 7 out of 13 (53.8%) studies had a median standardized UIC <100 μg/L. Seven out of 11 (63.6%) studies in pregnant women revealed a median UIC <150 μg/L. Conclusions: We demonstrate that iodine deficiency is still present in Europe, using standardized data from a large number of studies. Adults and pregnant women, particularly, are at risk for iodine deficiency, which calls for action. For instance, a more uniform European legislation on iodine fortification is warranted to ensure that noniodized salt is replaced by iodized salt more often. In addition, further efforts should be put on harmonizing iodine-related studies and iodine measurements to improve the validity and comparability of results.
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Affiliation(s)
- Till Ittermann
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Diana Albrecht
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
- Leibniz Institute for Plasma Science and Technology (INP), Greifswald, Germany
| | - Petra Arohonka
- Department of Government Services, Finnish Institute for Health and Welfare, Helsinki, Finland
- Department of Public Health Solutions, Finnish Institute for Health and Welfare, Helsinki, Finland
| | | | - Joao J de Castro
- Department of Endocrinology, Hospital das Forças Armadas, Lisbon, Portugal
| | - Lisbeth Dahl
- Food Security and Nutrition, Institute of Marine Research (IMR), Bergen, Norway
| | - Helena Filipsson Nystrom
- Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
- Department of Endocrinology, Sahlgrenska University Hospital, Göteborg, Sweden
| | - Simona Gaberscek
- Department of Nuclear Medicine, University Medical Centre, Ljubljana, Slovenia
| | - Eduardo Garcia-Fuentes
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, IBIMA, Málaga, Spain
| | - Monica L Gheorghiu
- Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- C.I. Parhon National Institute of Endocrinology, Bucharest, Romania
| | | | - Sandra Hunziker
- Department of Health Sciences and Technology, ETH, Zürich, Switzerland
| | - Tomislav Jukic
- Department of Oncology and Nuclear Medicine, Sestre Milosrdnice University Hospital Centre, Zagreb, Croatia
| | - Borislav Karanfilski
- Centre for Regional Policy Research and Cooperation "Studiorum", Skopje, North Macedonia
| | - Seppo Koskinen
- Department of Public Health Solutions, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Zvonko Kusic
- Department of Oncology and Nuclear Medicine, Sestre Milosrdnice University Hospital Centre, Zagreb, Croatia
| | - Venjamin Majstorov
- Institute of Pathophysiology and Nuclear Medicine, Ss. Cyril and Methodius University, Skopje, Former Yougoslavian Rebublic of Macedonia
| | - Konstantinos C Makris
- Cyprus International Institute for Environmental and Public Health, Cyprus University of Technology, Limassol, Cyprus
| | - Kostas B Markou
- Department of Endocrinology, Institute University of Patras Medical School, Patras, Greece
| | - Christa Meisinger
- Chair of Epidemiology, Ludwig-Maximilians Universität Munich, UNIKA-T Augsburg, Augsburg, Germany
- Independent Research Group Clinical Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, Neuherberg, Germany
| | - Neda Milevska Kostova
- Centre for Regional Policy Research and Cooperation "Studiorum", Skopje, North Macedonia
| | - Karen R Mullen
- Belfast Health and Social Care Trust, Belfast, United Kingdom
| | - Endre V Nagy
- Division of Endocrinology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Valdis Pirags
- Department of Internal Medicine, University of Latvia, Riga, Latvia
| | - Gemma Rojo-Martinez
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, IBIMA, Málaga, Spain
| | - Mira Samardzic
- Department of Endocrinology and Diabetes, Institute for Sick Children, Podgorica, Montenegro
| | - Ljiljana Saranac
- Department of Pediatrics, Faculty of Medicine, University of Niš, Niš, Serbia
| | - Ieva Strele
- Department of Internal Medicine, University of Latvia, Riga, Latvia
| | - Michael Thamm
- Department of Epidemiology and Health Monitoring, Robert Koch Institute, Berlin, Germany
| | - Işık Top
- Department of Public Health, Dokuz Eylul University Medical Faculty, İzmir, Turkey
| | | | - Belgin Ünal
- Department of Public Health, Dokuz Eylul University Medical Faculty, İzmir, Turkey
| | - Seppo Koskinen
- Department of Public Health Solutions, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Lluis Vila
- Department of Endocrinology and Nutrition, Hospital de Sant Joan Despi Moisès Broggi, Barcelona, Spain
| | - Paolo Vitti
- Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
| | - Benjamin Winter
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Jayne V Woodside
- Centre for Public Health, Queen's University Belfast, Belfast, United Kingdom
| | - Katja Zaletel
- Department of Nuclear Medicine, University Medical Centre, Ljubljana, Slovenia
| | | | | | - Iris Erlund
- Department of Government Services, Finnish Institute for Health and Welfare, Helsinki, Finland
- Department of Public Health Solutions, Finnish Institute for Health and Welfare, Helsinki, Finland
| | - Henry Völzke
- Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany
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Zhu Y, Minović I, Dekker LH, Eggersdorfer ML, van Zon SK, Reijneveld SA, Kootstra-Ros JE, Kema IP, Bakker SJ, Navis GJ, Riphagen IJ. Vitamin Status and Diet in Elderly with Low and High Socioeconomic Status: The Lifelines-MINUTHE Study. Nutrients 2020; 12:nu12092659. [PMID: 32878227 PMCID: PMC7551314 DOI: 10.3390/nu12092659] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 08/28/2020] [Accepted: 08/28/2020] [Indexed: 12/11/2022] Open
Abstract
Socioeconomic health inequalities are an important global public health problem. However, it is not well known to what extent socioeconomic inequalities culminate in impaired vitamin status and whether this is mediated by diet. We, therefore, aimed to assess vitamin status in a population already at increased risk of micronutrient deficiency, i.e., elderly with high and low socioeconomic status (SES), and to investigate whether potential differences therein were mediated by diet quality. Vitamin status in 1605 individuals (60–75 years) from the Lifelines- Micronutrients and Health inequalities in Elderly (MINUTHE) Study was assessed by measuring folic acid and the vitamins B6, B12, D, A, E, and K. Multinomial logistic and linear regression analyses were applied to test the associations between SES and vitamin status. Mediation analysis was used to explore the interrelationship between SES, diet quality, and vitamin status. Low SES was associated with poorer status of vitamin B6, vitamin B12, and, notably, folic acid. Moreover, multivitamin deficiencies were more prevalent in the low SES group. Diet quality was found to mediate the associations of SES with folic acid (for 39.1%), vitamin B6 (for 37.1%), and vitamin B12 (for 37.2%). We conclude that low SES is a risk factor for a spectrum of vitamin deficiencies. Diet quality can partially explain the socioeconomic differences in vitamin status, suggesting that policymakers can mitigate socioeconomic inequality in nutritional status through improving diet quality.
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Affiliation(s)
- Yinjie Zhu
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (L.H.D.); (S.J.L.B.); (G.J.N.)
- Correspondence: ; Tel.: +31(0)62-665-2320
| | - Isidor Minović
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (I.M.); (J.E.K.-R.); (I.P.K.); (I.J.R.)
| | - Louise H. Dekker
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (L.H.D.); (S.J.L.B.); (G.J.N.)
| | | | - Sander K.R. van Zon
- Department of Health Sciences, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (S.K.R.v.Z.); (S.A.R.)
| | - Sijmen A. Reijneveld
- Department of Health Sciences, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (S.K.R.v.Z.); (S.A.R.)
| | - Jenny E. Kootstra-Ros
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (I.M.); (J.E.K.-R.); (I.P.K.); (I.J.R.)
| | - Ido P. Kema
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (I.M.); (J.E.K.-R.); (I.P.K.); (I.J.R.)
| | - Stephan J.L. Bakker
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (L.H.D.); (S.J.L.B.); (G.J.N.)
| | - Gerjan J. Navis
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (L.H.D.); (S.J.L.B.); (G.J.N.)
| | - Ineke J. Riphagen
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands; (I.M.); (J.E.K.-R.); (I.P.K.); (I.J.R.)
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Cashman KD, O'Sullivan SM, Galvin K, Ryan M. Contribution of Vitamin D 2 and D 3 and Their Respective 25-Hydroxy Metabolites to the Total Vitamin D Content of Beef and Lamb. Curr Dev Nutr 2020; 4:nzaa112. [PMID: 32704612 PMCID: PMC7366049 DOI: 10.1093/cdn/nzaa112] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/23/2020] [Accepted: 06/26/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Red meat and meat products can contribute meaningfully to the mean daily intake of vitamin D. Beef and lamb can contain vitamin D3 and 25-hydroxyvitamin D3 [25(OH)D3] but also potentially vitamin D2 and 25-hydroxyvitamin D2 [25(OH)D2], all of which contribute to meat's vitamin D activity. OBJECTIVES We aimed to measure the vitamin D3, vitamin D2, 25(OH)D3, and 25(OH)D2 content of Irish beef and lamb. METHODS Full striploin steaks (longissimus dorsi) (n = 39) from beef cattle slaughtered in winter, spring, summer, and autumn as well as lamb steaks (hind leg) from sheep slaughtered in autumn (n = 8) were sourced and homogenized. The contents of all 4 vitamin D-related compounds were analyzed using an LC-tandem MS method in conjunction with the National Institute of Standards and Technology's standard reference material no. 1546a-Meat Homogenate. The total vitamin D activity of meat was defined as: {vitamin D3 + [25(OH)D3 × 5] + vitamin D2 + [25(OH)D2 × 5]}. RESULTS The median (IQR) total vitamin D activity of striploin beef steak (n = 39, irrespective of season) was 0.56 (0.37-0.91) μg/100 g. The content of all 4 vitamin D compounds in beef steak varied significantly (P < 0.0001) with season (n = 8-11/season group). Median total vitamin D activity of beef steak increased in a stepwise manner (P < 0.0001) from winter to the following autumn (increasing from 0.31 to 1.07 μg/100 g). The mean total vitamin D activity of lamb samples (n = 8) from autumn was 0.47 μg/100 g. CONCLUSIONS About one-third of the total vitamin D activity of Irish beef was attributable to its combined vitamin D2 and 25(OH)D2 content, estimates of which are largely or completely missed in food composition tables. There was significant seasonal variation in all 4 vitamin D compounds as well as in total vitamin D activity, which has implications for vitamin D nutrient claims for beef.
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Affiliation(s)
- Kevin D Cashman
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Siobhan M O'Sullivan
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Karen Galvin
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
| | - Michelle Ryan
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland
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Abstract
The WHO has announced the novel coronavirus disease (COVID-19) outbreak to be a global pandemic. The distribution of community outbreaks shows seasonal patterns along certain latitude, temperature and humidity, that is, similar to the behaviour of seasonal viral respiratory tract infections. COVID-19 displays significant spread in northern mid-latitude countries with an average temperature of 5–11°C and low humidity. Vitamin D deficiency has also been described as pandemic, especially in Europe. Regardless of age, ethnicity and latitude, recent data showed that 40 % of Europeans are vitamin D deficient (25-hydroxyvitamin D (25(OH)D) levels <50 nmol/l), and 13 % are severely deficient (25(OH)D < 30 nmol/l). A quadratic relationship was found between the prevalences of vitamin D deficiency in most commonly affected countries by COVID-19 and the latitudes. Vitamin D deficiency is more common in the subtropical and mid-latitude countries than the tropical and high-latitude countries. The most commonly affected countries with severe vitamin D deficiency are from the subtropical (Saudi Arabia 46 %; Qatar 46 %; Iran 33·4 %; Chile 26·4 %) and mid-latitude (France 27·3 %; Portugal 21·2 %; Austria 19·3 %) regions. Severe vitamin D deficiency was found to be nearly 0 % in some high-latitude countries (e.g. Norway, Finland, Sweden, Denmark and Netherlands). Accordingly, we would like to call attention to the possible association between severe vitamin D deficiency and mortality pertaining to COVID-19. Given its rare side effects and relatively wide safety, prophylactic vitamin D supplementation and/or food fortification might reasonably serve as a very convenient adjuvant therapy for these two worldwide public health problems alike.
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30
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Gromova O, Doschanova A, Lokshin V, Tuletova A, Grebennikova G, Daniyarova L, Kaishibayeva G, Nurpeissov T, Khan V, Semenova Y, Chibisova A, Suzdalskaya N, Aitaly Z, Glushkova N. Vitamin D deficiency in Kazakhstan: Cross-Sectional study. J Steroid Biochem Mol Biol 2020; 199:105565. [PMID: 31812522 DOI: 10.1016/j.jsbmb.2019.105565] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Revised: 12/03/2019] [Accepted: 12/04/2019] [Indexed: 11/17/2022]
Abstract
Vitamin D deficiency (VDD) is one of the serious and highly debatable public health problems affecting at least one billion of world population. This study objected to evaluate Vitamin D status in adult population of both sexes residing in different geographical areas of Kazakhstan and to elucidate the possible contributing factors related to VDD. This cross-sectional study covered 6 regions of Kazakhstan and applied the systematic random sampling to recruit 1347 healthy adults (of whom 819 were females) with mean age 44 ± 14 years. The concentration of 25-hydroxy vitamin D (25-OHD) was measured from May 2018 to August 2018 with Architect 25OH Vitamin D assay (Abbott Ireland Diagnostics Division Lisnamuck, Longford Co. Longford Ireland). Vitamin D deficiency was defined as 25-OHD values not exceeding 20 ng/mL as a reference threshold in healthy population. The median serum 25(OH)D concentrations in all studied regions of Kazakhstan were below the reference threshold (20 ng/mL). The lowest range of vitamin D (<10 ng/mL) was observed more commonly in females (34.6 % - 283) as compared to males (16.7 % - 88) and was significantly higher in Asians (33.2 % - 352) in contrast with Caucasians (6.7 % - 19) (χ2 = 177,939; D.f. = 3; p-value=<0,001). The proportion of severe VDD was higher in individuals with low body mass index (31.1 % - 188) vs. individuals with high body mass index (18.7 % - 50). In this study individuals aged 60 years and older had the most favorable situation with 25-OHD concentrations since these were normal in 14.4 % of observations (χ2 = 26,589; D.f. = 6; p-value=<0001). Studying the prevalence of VDD is an important public health task. Further research is needed to understand the epidemiology of VDD in more details to tailor intervention programs.
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Affiliation(s)
- Olga Gromova
- Federal Research Center «Computer Science and Control» of the Russian Academy of Sciences, Moscow, Russia; Institute of Bioelementology, Moscow, Russia
| | - Aikerm Doschanova
- Medical Center "Talmas Medicus", Astana, Kazakhstan; Association of Obstetricians and Gynecologists of Astana, Astana, Kazakhstan
| | - Vyacheslav Lokshin
- Persona International Clinical Center for Reproductology, Almaty, Kazakhstan; Association of Reproductive Medicine, Almaty, Kazakhstan
| | | | | | - Laura Daniyarova
- Asfendiyarov Kazakh National Medical University, Almaty, Kazakhstan
| | | | | | | | - Yuliya Semenova
- Department of Neurology, Ophthalmology and Otolaryngology, Semey Medical University, Semey, Kazakhstan
| | | | | | - Zhanara Aitaly
- Federal Research Center «Computer Science and Control» of the Russian Academy of Sciences, Moscow, Russia
| | - Natalia Glushkova
- Department of Personalized Medicine, Semey Medical University, Semey, Kazakhstan.
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31
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Svanevik M, Risstad H, Hofsø D, Blom-Høgestøl IK, Kristinsson JA, Sandbu R, Småstuen MC, Thorsby PM, Mala T, Hjelmesæth J. Bone Turnover Markers After Standard and Distal Roux-en-Y Gastric Bypass: Results from a Randomized Controlled Trial. Obes Surg 2020; 29:2886-2895. [PMID: 31065919 DOI: 10.1007/s11695-019-03909-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
BACKGROUND Roux-en-Y gastric bypass is associated with increased risk of bone fractures. Malabsorptive procedures may be associated with secondary hyperparathyroidism and detrimental effects on bone health. We aimed to compare the effects of standard and distal gastric bypass on bone turnover markers 2 years after surgery. METHODS Patients with body mass index (BMI) 50-60 kg/m2 (n = 113) were randomized to standard or distal gastric bypass, 105 patients (95%) completed 2-year follow-up. Serum C-terminal telopeptide of type I collagen (CTX-1), procollagen type I N-propeptide (PINP), and bone-derived alkaline phosphatase (BALP) was measured at baseline and up to 2 years after surgery. ANCOVA and linear mixed models were used to compare groups. RESULTS The levels of bone turnover markers increased significantly in both groups, with no statistically significant difference between groups. Two years after standard and distal gastric bypass mean (SD) CTX-1 were 0.81 (0.32) and 0.83 (0.31) μg/L (p = 0.38), mean PINP was 77.6 (23.2) and 77.7 (29.3) μg/L (p = 0.42), and BALP 47.9 (21.9) vs. 50.7 (19.6) μg/L (p = 0.38), respectively. Multiple linear regression analyses showed that PINP and BALP correlated positively (p = 0.01 and p < 0.001) with PTH, but only BALP was significantly higher in patients with secondary hyperparathyroidism (p = 0.001). Type of surgery, vitamin D serum concentrations, and 2-year BMI were all independently associated with PTH levels. CONCLUSION A comparable increase in bone turnover markers 2 years after standard and distal gastric bypass was observed. There was a higher prevalence of secondary hyperparathyroidism after distal gastric bypass, but this did not impact bone turnover markers. TRIAL REGISTRATION Clinical Trials.gov number NCT00821197.
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Affiliation(s)
- Marius Svanevik
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway. .,Department of Endocrinology, Morbid Obesity and Preventive Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway. .,Department of Gastrointestinal Surgery, Vestfold Hospital Trust, Tønsberg, Norway.
| | - Hilde Risstad
- Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
| | - Dag Hofsø
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway
| | - Ingvild K Blom-Høgestøl
- Department of Endocrinology, Morbid Obesity and Preventive Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway.,Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
| | - Jon A Kristinsson
- Department of Morbid Obesity and Bariatric Surgery, Oslo University Hospital, Oslo, Norway
| | - Rune Sandbu
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway.,Department of Gastrointestinal Surgery, Vestfold Hospital Trust, Tønsberg, Norway
| | - Milada Cvancarova Småstuen
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway.,Oslo Metropolitan University, Oslo, Norway
| | - Per Medbøe Thorsby
- Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Oslo, Norway
| | - Tom Mala
- Department of Morbid Obesity and Bariatric Surgery, Oslo University Hospital, Oslo, Norway.,Department of Gastrointestinal Surgery, Oslo University Hospital, Oslo, Norway
| | - Jøran Hjelmesæth
- Morbid Obesity Center, Vestfold Hospital Trust, Tønsberg, Norway.,Department of Endocrinology, Morbid Obesity and Preventive Medicine, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
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32
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Miettinen ME, Niinistö S, Erlund I, Cuthbertson D, Nucci AM, Honkanen J, Vaarala O, Hyöty H, Krischer JP, Knip M, Virtanen SM. Serum 25-hydroxyvitamin D concentration in childhood and risk of islet autoimmunity and type 1 diabetes: the TRIGR nested case-control ancillary study. Diabetologia 2020; 63:780-787. [PMID: 31912198 PMCID: PMC7054378 DOI: 10.1007/s00125-019-05077-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 11/08/2019] [Indexed: 12/20/2022]
Abstract
AIMS/HYPOTHESIS Our aim was to study the association between serum 25-hydroxyvitamin D (25OHD) concentration and islet autoimmunity and type 1 diabetes in children with an increased genetic risk of type 1 diabetes. METHODS Serum samples for 25OHD measurements were obtained in the Trial to Reduce IDDM in the Genetically at Risk (TRIGR) ancillary study (Divia) from children in 15 countries. Case children (n = 244) were defined as having positivity for at least two out of four diabetes-associated autoantibodies measured at any one sample. For each case child, two control children were selected matched for country and date of birth (±1 year) (n = 488). Of the case children, 144 developed type 1 diabetes. Serum 25OHD was measured repeatedly in infancy and childhood and was compared according to age at the first seroconversion (at 6, 12 and 18 months prior to and at seroconversion) and calendar age (0, 6, 12 and 18 months). RESULTS In children with islet autoimmunity, mean serum 25OHD concentration was lower 18 months prior to the age of first seroconversion of the case children compared with the control children (57.7 vs 64.8 nmol/l, p = 0.007). In children with type 1 diabetes (n = 144), mean serum 25OHD concentration was lower 18 months prior to the age of the first seroconversion (58.0 vs 65.0 nmol/l, p = 0.018) and at the calendar age of 12 months (70.1 vs 75.9 nmol/l, p = 0.031) than in their control counterparts. Analyses were adjusted for month of sample collection, human leucocyte antigen genotype, maternal type 1 diabetes and sex. CONCLUSIONS/INTERPRETATION The results suggest that early postnatal vitamin D may confer protection against the development of type 1 diabetes. TRIAL REGISTRATION ClinicalTrials.gov NCT00179777.
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Affiliation(s)
- Maija E Miettinen
- Department of Public Health Solutions, National Institute for Health and Welfare, PO Box 30, 00271, Helsinki, Finland.
| | - Sari Niinistö
- Department of Public Health Solutions, National Institute for Health and Welfare, PO Box 30, 00271, Helsinki, Finland
| | - Iris Erlund
- Department of Public Health Solutions, National Institute for Health and Welfare, PO Box 30, 00271, Helsinki, Finland
- Department of Government Services, National Institute for Health and Welfare, Helsinki, Finland
| | - David Cuthbertson
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Anita M Nucci
- Department of Nutrition, Georgia State University, Atlanta, GA, USA
| | - Jarno Honkanen
- Scientific Laboratory, Clinicum, University of Helsinki, Helsinki, Finland
| | - Outi Vaarala
- Scientific Laboratory, Clinicum, University of Helsinki, Helsinki, Finland
| | - Heikki Hyöty
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
- Fimlab Laboratories, Pirkanmaa Hospital District, Tampere, Finland
| | - Jeffrey P Krischer
- Health Informatics Institute, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Mikael Knip
- Children's Hospital, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
- Folkhälsan Research Center, Helsinki, Finland
- Research Program for Clinical and Molecular Metabolism, University of Helsinki, Helsinki, Finland
- Department of Pediatrics, Tampere University Hospital, Tampere, Finland
| | - Suvi M Virtanen
- Department of Public Health Solutions, National Institute for Health and Welfare, PO Box 30, 00271, Helsinki, Finland
- Faculty of Social Sciences, Health Sciences, University of Tampere, Tampere, Finland
- Research, Development and Innovation Center, Tampere University Hospital, Tampere, Finland
- Center for Child Health Research, Tampere University and Tampere University Hospital, Tampere, Finland
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Jääskeläinen T, Männistö S, Härkänen T, Sääksjärvi K, Koskinen S, Lundqvist A. Does vitamin D status predict weight gain or increase in waist circumference? Results from the longitudinal Health 2000/2011 Survey. Public Health Nutr 2020; 23:1266-72. [PMID: 32204746 DOI: 10.1017/S1368980019004403] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To investigate whether vitamin D status predicts weight gain or increase in waist circumference during the 11-year follow-up in general adult population. DESIGN A population-based longitudinal study. SETTING The study was conducted using data from the nationally representative Health 2000/2011 Survey. The analyses were based on regression models adjusted for sociodemographic and lifestyle factors. PARTICIPANTS Weight, waist circumference and vitamin D status (serum 25-hydroxyvitamin D concentration analysed with radioimmunoassay) were measured from 2924 participants aged 30-64 years at baseline. RESULTS In men, low vitamin D status at baseline predicted ≥10 % increase in waist circumference during the follow-up when adjusted for age only (OR for sufficient v. deficient S-25(OH)D 0·41; 95 % CI 0·25, 0·67; P for trend <0·01), but the association with weight gain was only borderline significant. After adjustment for potential confounders, low vitamin D status remained a significant predictor of increase in waist circumference, but the association with weight gain was further attenuated. In women, vitamin D status at baseline did not predict weight gain or increase in waist circumference. CONCLUSIONS Our results suggest that vitamin D insufficiency may be a risk factor of abdominal obesity among men but not among women. In men, it may also increase the risk of weight gain. Further studies are required to confirm these findings and examine potential mechanisms behind them. There is also a possibility that vitamin D is a biomarker of healthy lifestyle rather than an independent risk factor for obesity.
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Abstract
PURPOSE OF REVIEW The purpose of this review is to discuss the literature on associations between vitamin D and periodontal disease, including its strengths and weaknesses. Future direction for continued work in this area is provided. RECENT FINDINGS Research in cross-sectional cohorts, surveys, and case-control studies provide support for a role of vitamin D in periodontal disease, especially using clinical indicators such as bleeding on probing and clinical attachment loss. However, these studies have a number of limitations. They cannot establish temporality of these associations. Most case-control studies have been limited in sample size and have inconsistent findings. A number of cross-sectional studies are restricted to select populations (e.g., persons with HIV, diabetes, rheumatoid arthritis) limiting extrapolation of findings to the general aging population.Fewer prospective studies have been conducted, and only three have examined associations using a biomarker for vitamin D that reflects exposure from all its sources (sunlight, diet and supplements). One study is limited by using self-reported measures of disease outcomes, and only two used measures of alveolar crestal height. However, of the prospective studies published, there is a suggestion that vitamin D might prevent against tooth loss. Only two randomized controlled trials have examined these associations, and they support the effects of vitamin D supplementation on prevention of tooth loss and gingival bleeding. SUMMARY We strongly suggest that new research should focus on prospective study designs with followup of participants longer than a decade and long-term clinical trials. Such studies should incorporate measures of alveolar bone loss and tooth loss with indication for reason for tooth loss. Such clinical trials should be designed to examine both the influence of vitamin D supplementation alone as well as with other nutrients (e.g., calcium) or therapeutic medications (e.g., bisphosphonates). Currently, there is no strong evidence to suggest that vitamin D protects against development of periodontal disease.
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Affiliation(s)
- Amy E Millen
- Farber Hall 270F, Department of Epidemiology and Environmental Health, School of Public Health and Health Professions, University at Buffalo, State University of New York, Buffalo, NY. 14214
| | - Sonja Pavlesen
- Buffalo General Medical Center 6D501, 100 High St., Department of Orthopedic Surgery, Jacobs School of Medicine and Biomedical Science, University at Buffalo, State University of New York, Buffalo, NY. 14203
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35
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Stephenson A, Mamo JCL, Takechi R, Hackett MJ, Lam V. Genetic, environmental and biomarker considerations delineating the regulatory effects of vitamin D on central nervous system function. Br J Nutr 2020; 123:41-58. [PMID: 31640823 DOI: 10.1017/S000711451900268X] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Studies show that vitamin D (vit-D) (25(OH)D), the bioactive metabolite (1,25(OH)2D3) and vit-D receptors (vit-D receptor; protein disulphide isomerase, family A member 3) are expressed throughout the brain, particularly in regions pivotal to learning and memory. This has led to the paradigm that avoiding vit-D deficiency is important to preserve cognitive function. However, presently, it is not clear if the common clinical measure of serum 25(OH)D serves as a robust surrogate marker for central nervous system (CNS) homeostasis or function. Indeed, recent studies report CNS biosynthesis of endogenous 25(OH)D, the CNS expression of the CYP group of enzymes which catalyse conversion to 1,25(OH)2D3 and thereafter, deactivation. Moreover, in the periphery, there is significant ethnic/genetic heterogeneity in vit-D conversion to 1,25(OH)2D3 and there is a paucity of studies which have actually investigated vit-D kinetics across the cerebrovasculature. Compared with peripheral organs, the CNS also has differential expression of receptors that trigger cellular response to 1,25(OH)2D3 metabolites. To holistically consider the putative association of peripheral (blood) abundance of 25(OH)D on cognitive function, herein, we have reviewed population and genetic studies, pre-clinical and clinical intervention studies and moreover have considered potential confounders of vit-D analysis.
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36
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Itkonen ST, Andersen R, Björk AK, Brugård Konde Å, Eneroth H, Erkkola M, Holvik K, Madar AA, Meyer HE, Tetens I, Torfadóttir JE, Thórisdóttir B, Lamberg-Allardt CJE. Vitamin D status and current policies to achieve adequate vitamin D intake in the Nordic countries. Scand J Public Health 2020; 49:616-627. [PMID: 31916497 DOI: 10.1177/1403494819896878] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Aims: Nordic countries share fairly similar food culture and geographical location as well as common nutrition recommendations. The aim of this paper was to review the latest data on vitamin D status and intake and to describe the national supplementation and food fortification policies to achieve adequate vitamin D intake in the Nordic countries. Methods: The data are based on results derived from a literature search presented in a workshop held in Helsinki in November 2018 and completed by recent studies. Results: Vitamin D policies and the implementation of the recommendations differ among the Nordic countries. Vitamin D fortification policies can be mandatory or voluntary and widespread, moderate or non-existent. Vitamin D supplementation recommendations differ, ranging from all age groups being advised to take supplements to only infants. In the general adult population of the Nordic countries, vitamin D status and intake are better than in the risk groups that are not consuming vitamin D supplements or foods containing vitamin D. Non-Western immigrant populations in all Nordic countries share the problem of vitamin D insufficiency and deficiency. Conclusions: Despite the common nutrition recommendations, there are differences between the Nordic countries in the implementation of the recommendations and policies to achieve adequate vitamin D intake and status. There is a need for wider Nordic collaboration studies as well as strategies to improve vitamin D status, especially in risk groups.
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Affiliation(s)
- Suvi T Itkonen
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| | - Rikke Andersen
- Division for Diet, Disease Prevention and Toxicology, National Food Institute, Technical University of Denmark, Kongens Lyngby, Denmark
| | - Anne K Björk
- Department of Medical Sciences, Endocrinology and Mineral Metabolism, Uppsala University, Uppsala, Sweden
| | | | - Hanna Eneroth
- Science Division, National Food Agency, Uppsala, Sweden
| | - Maijaliisa Erkkola
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| | - Kristin Holvik
- Department of Chronic Diseases and Ageing, Norwegian Institute of Public Health, Oslo, Norway
| | - Ahmed A Madar
- Department of Community Medicine and Global Health, University of Oslo, Oslo, Norway
| | - Haakon E Meyer
- Department of Chronic Diseases and Ageing, Norwegian Institute of Public Health, Oslo, Norway.,Department of Community Medicine and Global Health, University of Oslo, Oslo, Norway
| | - Inge Tetens
- Vitality - Centre for Good Older Lives, Department of Nutrition, Exercise, and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Jóhanna E Torfadóttir
- Centre of Public Health Sciences, Faculty of Medicine, University of Iceland, Reykjavik, Iceland.,Icelandic Cancer Society, Reykjavik, Iceland
| | - Birna Thórisdóttir
- Icelandic Cancer Society, Reykjavik, Iceland.,Faculty of Sociology, Anthropology and Folkloristics, School of Social Sciences, University of Iceland, Reykjavik, Iceland
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Abstract
There are variable definitions of vitamin D deficiency, based on different thresholds of serum 25-hydroxyvitamin D (25(OH)D); this has a major bearing on the prevalence estimates of vitamin D deficiency and consequently on the magnitude of the public health issue of low vitamin D status. Despite this, there is widespread acknowledgement of the presence of vitamin D deficiency, even using the most conservative serum 25(OH)D threshold of < 25/30 nmol/L, in both low- and high-income country setting and the pressing need to address this deficiency. While ultraviolet B-rich sunlight stimulates synthesis of vitamin D in skin, there are environmental factors and personal characteristics which prevent or impede such dermal synthesis. There are several complexities and concerns in advocating sun exposure as a public health approach for increasing vitamin D status. This places increased emphasis on addressing vitamin D deficiency through dietary means. However, naturally rich sources of vitamin D are few and infrequently consumed, and nutrition surveillance data from various countries have indicated that habitual vitamin D intakes in the population are much lower than the recommendations. There are a number of strategies that can be considered for the control of micronutrient malnutrition, these include (i) increasing the diversity of foods consumed, (ii) food fortification, and (iii) supplementation. The present narrative review will consider these strategies for addressing low dietary vitamin D intake and consequently lowering the risk of vitamin D deficiency.
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Affiliation(s)
- Kevin D Cashman
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland.
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38
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Frigstad SO, Høivik ML, Jahnsen J, Cvancarova M, Grimstad T, Berset IP, Huppertz-Hauss G, Hovde Ø, Bernklev T, Moum B, Jelsness-Jørgensen LP. Pain Severity and Vitamin D Deficiency in IBD Patients. Nutrients 2019; 12:nu12010026. [PMID: 31877637 PMCID: PMC7019855 DOI: 10.3390/nu12010026] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2019] [Revised: 12/10/2019] [Accepted: 12/18/2019] [Indexed: 12/22/2022] Open
Abstract
Background: Pain and vitamin D deficiency are common in inflammatory bowel disease (IBD). Disease activity, fatigue, frequent relapses, prior surgery and psychological factors all seem to influence the experience of pain in IBD. Vitamin D deficiency has been associated with muscle and skeletal pain. This study aimed to determine whether there is an association between vitamin D deficiency and severity of pain in patients with IBD, and to investigate the influence of other socio-demographic and psychological variables on the experience of pain. Methods: Patients with IBD were recruited from nine hospitals in Norway in a multicenter cross-sectional study. The Brief Pain Inventory (BPI) questionnaire was used to measure pain. Disease activity was assessed using clinical disease activity indices, C-reactive protein (CRP) and fecal calprotectin. Regression models were fitted to explore a possible association between 25-hydroxyvitamin D and pain severity. Results: Of 407 patients included in the analyses, 229 (56%) had Crohn’s disease (CD) and 178 (44%) had ulcerative colitis (UC). Vitamin D deficiency was present in half (203/407) of patients. Presence of pain was reported by 76% (309/407). More severe pain was associated with female gender and increased disease activity scores, but not with increased CRP or fecal calprotectin. In CD, patients without prior intra-abdominal surgery reported more severe pain. In multivariate analyses, there was no association between 25-hydroxyvitamin D and pain severity. Conclusions: In this study, no significant association between pain severity and vitamin D deficiency was revealed in patients with IBD.
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Affiliation(s)
- Svein Oskar Frigstad
- Department of Research, Østfold Hospital, 1714 Grålum, Norway
- Department of Medicine, Vestre Viken Bærum Hospital, 1346 Gjettum, Norway
- Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; (M.L.H.); (J.J.); (I.P.B.); (Ø.H.); (T.B.); (B.M.)
- Correspondence: ; Tel.: +47-6780-9587
| | - Marte Lie Høivik
- Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; (M.L.H.); (J.J.); (I.P.B.); (Ø.H.); (T.B.); (B.M.)
- Department of Gastroenterology, Oslo University Hospital, 0424 Oslo, Norway;
| | - Jørgen Jahnsen
- Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; (M.L.H.); (J.J.); (I.P.B.); (Ø.H.); (T.B.); (B.M.)
- Department of Gastroenterology, Akershus University Hospital, 1478 Nordbyhagen, Norway
| | - Milada Cvancarova
- Department of Gastroenterology, Oslo University Hospital, 0424 Oslo, Norway;
- Department of Biostatistics, Oslo Metropolitan University, 0130 Oslo, Norway
| | - Tore Grimstad
- Department of Gastroenterology, Stavanger University Hospital, 4068 Stavanger, Norway;
| | - Ingrid Prytz Berset
- Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; (M.L.H.); (J.J.); (I.P.B.); (Ø.H.); (T.B.); (B.M.)
| | | | - Øistein Hovde
- Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; (M.L.H.); (J.J.); (I.P.B.); (Ø.H.); (T.B.); (B.M.)
- Department of Medicine, Innlandet Hospital, 2819 Gjøvik, Norway
| | - Tomm Bernklev
- Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; (M.L.H.); (J.J.); (I.P.B.); (Ø.H.); (T.B.); (B.M.)
- Department of Research and Development, Vestfold Hospital, 3103 Tønsberg, Norway
| | - Bjørn Moum
- Institute of Clinical Medicine, University of Oslo, 0318 Oslo, Norway; (M.L.H.); (J.J.); (I.P.B.); (Ø.H.); (T.B.); (B.M.)
- Department of Gastroenterology, Oslo University Hospital, 0424 Oslo, Norway;
| | - Lars-Petter Jelsness-Jørgensen
- Department of Gastroenterology, Østfold Hospital, 1714 Grålum, Norway;
- Department of Health Sciences, Østfold University College, 1757 Halden, Norway
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39
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Grant WB, Fakhoury HMA, Karras SN, Al Anouti F, Bhattoa HP. Variations in 25-Hydroxyvitamin D in Countries from the Middle East and Europe: The Roles of UVB Exposure and Diet. Nutrients 2019; 11:E2065. [PMID: 31484329 PMCID: PMC6769941 DOI: 10.3390/nu11092065] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 08/09/2019] [Accepted: 08/19/2019] [Indexed: 12/20/2022] Open
Abstract
Serum 25-hydroxyvitamin D (25(OH)D) has been largely associated with latitude and sunshine exposure across several regions. According to previous results, 25(OH)D concentrations are, on average, relatively low in countries with abundant sunshine, including those of the Middle East and North Africa region, as well as lower-latitude Europe. The standard explanation for this phenomenon is that people wear concealing clothing because of cultural and religious practices and that high temperatures in summer limit direct sun exposure. However, the role of diet in the development of profound hypovitaminosis D has not been adequately explored in those countries. To examine how diet affects vitamin D status in the Middle Eastern and European countries, a search was conducted for papers from that region reporting 25(OH)D concentrations. Papers were sought that reported summertime and wintertime 25(OH)D concentrations for healthy nonpregnant adults representative of the entire population. Data from 15 Middle Eastern and European countries were found through this search. Data for postmenopausal women from 19 European countries were also obtained. Dietary supply data for animal products containing vitamin D (animal fat, eggs, ocean fish, animal meat, and milk) were obtained from the Food and Agriculture Organization of the United Nations. Latitude and a solar UVB dose index also were obtained for each country. For the 15-country study, energy from dietary factors was highly correlated with latitude, making it difficult to separate the effects of UVB exposure and dietary factors. However, for the 19-country study, dietary factors were only weakly correlated with latitude. In that study, ocean fish was the most important single dietary factor affecting serum 25(OH)D concentration for postmenopausal women in various European countries, but animal fat and meat also contributed. Because this is an ecological study, further research is encouraged to evaluate and extend the findings.
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Affiliation(s)
- William B Grant
- Director, Sunlight, Nutrition, and Health Research Center, P.O. Box 641603, San Francisco, CA 94164-1603, USA.
| | - Hana M A Fakhoury
- Department of Biochemistry and Molecular Medicine, College of Medicine, Alfaisal University, P.O. Box 50927, Riyadh 11533, Saudi Arabia
| | - Spyridon N Karras
- Division of Endocrinology and Metabolism and Diabetes Center, First Department of Internal Medicine, Medical School, Aristotle University of Thessaloniki, AHEPA University Hospital, 55535 Thessaloniki, Greece
| | - Fatme Al Anouti
- College of Natural and Health Sciences, Department of Public Health and Nutrition, Zayed University, P.O. Box 4783, Abu Dhabi 144534, UAE
| | - Harjit P Bhattoa
- Endocrinology Unit and Andrology and Cryopreservation Unit, Department of Laboratory Medicine, Faculty of Medicine University of Debrecen Nagyerdei krt. 98, H-4032 Debrecen, Hungary
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Bjerg LN, Halgreen JR, Hansen SH, Morris HA, Jørgensen NR. An evaluation of total 25-hydroxyvitamin D assay standardization: Where are we today? J Steroid Biochem Mol Biol 2019; 190:224-233. [PMID: 30940597 DOI: 10.1016/j.jsbmb.2019.03.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/12/2019] [Accepted: 03/23/2019] [Indexed: 11/23/2022]
Abstract
BACKGROUND Serum total 25-hydroxyvitamin D is a measure of the total circulating 25-hydroxyvitamin D concentration and is the primary measurement for estimating vitamin D status. A number of automated immunoassays are commercially available, and in an attempt to standardize the assays the Vitamin D Standardization Program (VDSP) was established in 2010. Therefore, the aim of the current project is to evaluate the status of the standardization of routinely used 25-hydroxyvitamin D assays. METHODS 200 patient serum samples were measured in Spring 2017 on seven different assays for 25-hydroxyvitamin D. Samples were measured in duplicate for the evaluation of precision. A certified standard reference material (SRM972a) from The National Institute of Standardization and Technology (NIST) was measured to evaluate the accuracy of the assays. Finally, the agreement of the assays of clinically categorizing patients into vitamin D deficiency, inadequacy or adequacy was evaluated. RESULTS All seven assays achieved precision below the VDSP requirement of CV < 10%. However, only two of the assays achieved an accuracy bias <5% when measuring the SRM972a. When comparing methods using Deming regression, substantial proportional and/or systematic bias was found between many of the assays. Finally, when evaluating the ability of the assays to categorize patients into "vitamin D deficiency" (25-hydroxyvitamin D concentration < 30 nmol/L (<12 ng/mL)), "vitamin D inadequacy" (30-50 nmol/L (12-20 ng/mL)), "vitamin D adequacy" (50-250 nmol/L (20-100 ng/mL)) and "risk of toxicity" (>250 nmol/L (>100 ng/mL)), clinically relevant differences between assays were detected. Especially in the deficiency group, major discrepancies were found as the percentage of patients ranged from 1.5%-14.3% between the assays.. CONCLUSIONS In conclusion, some of the commercially available assays have been standardized with performance as required by the VDSP. However, several of the assays do still not comply with the VDSP requirements even eight years after the program was started. This may have clinical consequences for patients, and manufacturers are therefore encouraged to continue their work on standardizing serum 25-hydroxyvitamin D assays.
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Affiliation(s)
- Lise Nørkjær Bjerg
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | | | - Svend Høime Hansen
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Howard A Morris
- School of Pharmacy and Medical Sciences, University of South Australia, Chemical Pathology Directorate and Hanson Institute, SA Pathology, Adelaide, Australia
| | - Niklas Rye Jørgensen
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark; OPEN, Odense Patient data Explorative Network, Odense University Hospital/Institute of Clinical Research, University of Southern Denmark, Odense, Denmark.
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Cashman KD, Ritz C. Individual participant data (IPD)-level meta-analysis of randomised controlled trials among dark-skinned populations to estimate the dietary requirement for vitamin D. Syst Rev 2019; 8:128. [PMID: 31138301 PMCID: PMC6540379 DOI: 10.1186/s13643-019-1032-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Accepted: 04/25/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Estimation of the dietary requirements for vitamin D is crucial from a public health perspective in providing a framework for the prevention of vitamin D deficiency. It has been shown that pooling individual participant-level data (IPD) from selected randomised controlled trials (RCTs) of white children and adults facilitated the generation of more accurate estimates of the vitamin D requirement. Recent RCT data suggest the vitamin D requirement of dark-skinned, particularly black, individuals, an at-risk group of vitamin D deficiency, is greater than those of white counterparts. Thus, we wished to develop a study protocol for the conduct of an IPD-level meta-analysis of vitamin D requirements using data from appropriate vitamin D RCTs in dark-skinned population subgroups. METHODS The study protocol details the steps needed within such an IPD meta-analysis which will include its registration, constituent systematic review to identify all appropriate RCTs on the basis of pre-specified eligibility criteria, the associated data collection, handling, and synthesis, as well as checking the integrity of the IPD, followed by implementation of a one/two-stage IPD meta-analysis and derivation of vitamin D requirement estimates. DISCUSSION As dark-skinned population subgroups are at increased risk of vitamin D deficiency, further investigation of dietary recommendations for vitamin D in these subgroups is needed. We strongly believe that application of an IPD-based meta-analysis is a highly strategic approach by which to undertake some of this further investigation. Such IPD-based analysis, however, will need collaboration across the principal investigators of the identified RCTs meeting with the eligibility criteria, and the availability of this study protocol will be important to highlight the potential of IPD-based analysis for estimation of the dietary requirement for vitamin D for this particular population subgroup as well as for other at-risk target populations. SYSTEMATIC REVIEW REGISTRATION PROSPERO International Prospective Register of Systematic Reviews (registration number: CRD42018092343).
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Affiliation(s)
- Kevin D Cashman
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, University College Cork, Cork, Ireland. .,Department of Medicine, University College Cork, Frederiksberg C, Ireland.
| | - Christian Ritz
- Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg C, Denmark
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Lips P, Cashman KD, Lamberg-Allardt C, Bischoff-Ferrari HA, Obermayer-Pietsch B, Bianchi ML, Stepan J, El-Hajj Fuleihan G, Bouillon R. Current vitamin D status in European and Middle East countries and strategies to prevent vitamin D deficiency: a position statement of the European Calcified Tissue Society. Eur J Endocrinol 2019; 180:P23-P54. [PMID: 30721133 DOI: 10.1530/eje-18-0736] [Citation(s) in RCA: 363] [Impact Index Per Article: 72.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 01/31/2019] [Indexed: 12/11/2022]
Abstract
Vitamin D deficiency (serum 25-hydroxyvitamin D (25(OH)D) <50 nmol/L or 20 ng/mL) is common in Europe and the Middle East. It occurs in <20% of the population in Northern Europe, in 30-60% in Western, Southern and Eastern Europe and up to 80% in Middle East countries. Severe deficiency (serum 25(OH)D <30 nmol/L or 12 ng/mL) is found in >10% of Europeans. The European Calcified Tissue Society (ECTS) advises that the measurement of serum 25(OH)D be standardized, for example, by the Vitamin D Standardization Program. Risk groups include young children, adolescents, pregnant women, older people (especially the institutionalized) and non-Western immigrants. Consequences of vitamin D deficiency include mineralization defects and lower bone mineral density causing fractures. Extra-skeletal consequences may be muscle weakness, falls and acute respiratory infection, and are the subject of large ongoing clinical trials. The ECTS advises to improve vitamin D status by food fortification and the use of vitamin D supplements in risk groups. Fortification of foods by adding vitamin D to dairy products, bread and cereals can improve the vitamin D status of the whole population, but quality assurance monitoring is needed to prevent intoxication. Specific risk groups such as infants and children up to 3 years, pregnant women, older persons and non-Western immigrants should routinely receive vitamin D supplements. Future research should include genetic studies to better define individual vulnerability for vitamin D deficiency, and Mendelian randomization studies to address the effect of vitamin D deficiency on long-term non-skeletal outcomes such as cancer.
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Affiliation(s)
- Paul Lips
- Endocrine Section, Department of Internal Medicine, Amsterdam University Medical Center, VUMC, Amsterdam, The Netherlands
| | - Kevin D Cashman
- Cork Centre for Vitamin D and Nutrition Research, School of Food and Nutritional Sciences, Department of Medicine, University College Cork, Cork, Ireland
| | - Christel Lamberg-Allardt
- Calcium Research Unit, Department of Food and Nutritional Sciences, University of Helsinki, Helsinki, Finland
| | | | - Barbara Obermayer-Pietsch
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University Graz, Graz, Austria
| | | | - Jan Stepan
- Institute of Rheumatology, Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Ghada El-Hajj Fuleihan
- Calcium Metabolism and Osteoporosis Program, WHO Collaborating Center for Metabolic Bone Disorders, American University of Beirut Medical Center, Beirut, Lebanon
| | - Roger Bouillon
- Clinic and Laboratory of Endocrinology, Gasthuisberg, KU Leuven, Leuven, Belgium
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Grønborg IM, Tetens I, Christensen T, Andersen EW, Jakobsen J, Kiely M, Cashman KD, Andersen R. Vitamin D-fortified foods improve wintertime vitamin D status in women of Danish and Pakistani origin living in Denmark: a randomized controlled trial. Eur J Nutr 2020; 59:741-53. [DOI: 10.1007/s00394-019-01941-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 03/01/2019] [Indexed: 11/26/2022]
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Abstract
Cancer incidence is inexplicably high in cold countries. This has been revealed by recent genetic and epidemiological studies. These studies used data from the GLOBOCAN-2012 database, for 186 populations and for a variety of cancer types. Cancer incidence in Nordic people is particularly high for the frequent cancer forms, like breast, prostate and colon cancer. A relationship of cancer with cold is suspected since Inuit and Alaska Indians that live in even more extreme low temperatures have the higher cancer rates in the world. In this article, possible reasons for this phenomenon are discussed. These explanations are related with: evolutionary adaptation to extreme cold, the genetic background of Nordic people, the experimentally proven fast growth and metastasis of tumors at low temperatures, high concentration of certain air pollutants at cold environments, low levels of serum Vitamin D, overdiagnosis by the medical doctors and high quality of the health system in Nordic countries. Lifestyle parameters are not discussed in detail, although these may be equally crucial for cancer risk in cold countries. In conclusion, more studies are needed to elucidate the real causes of this epidemiological pattern.
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Petrenya N, Lamberg-Allardt C, Melhus M, Broderstad AR, Brustad M. Vitamin D status in a multi-ethnic population of northern Norway: the SAMINOR 2 Clinical Survey. Public Health Nutr 2020; 23:1186-200. [PMID: 30767841 DOI: 10.1017/S1368980018003816] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Objective To investigate serum 25-hydroxyvitamin D (S-25(OH)D) concentration in a multi-ethnic population of northern Norway and determine predictors of S-25(OH)D, including Sami ethnicity. Design Cross-sectional data from the second survey of the Population-based Study on Health and Living Conditions in Regions with Sami and Norwegian Populations (the SAMINOR 2 Clinical Survey, 2012–2014). S-25(OH)D was measured by the IDS-iSYS 25-Hydroxy Vitamin Dˢ assay. Daily dietary intake was assessed using an FFQ. BMI was calculated using weight and height measurements. Setting Ten municipalities of northern Norway (latitude 68°–70°N). Participants Males (n 2041) and females (n 2424) aged 40–69 years. Results Mean S-25(OH)D in the study sample was 64·0 nmol/l and median vitamin D intake was 10·3 µg/d. The prevalence of S-25(OH)D<30 nmol/l was 1·9 % and <50 nmol/l was 24·7 %. In sex-specific multivariable linear regression models, older age, blood sample collection in September–October, solarium use, sunbathing holiday, higher alcohol intake (in females), use of cod-liver oil/fish oil supplements, use of vitamin/mineral supplements and higher intakes of vitamin D were significantly associated with higher S-25(OH)D, whereas being a current smoker and obesity were associated with lower S-25(OH)D. These factors explained 21–23 % of the variation in S-25(OH)D. Conclusions There were many modifiable risk factors related to S-25(OH)D, however no clear ethnic differences were found. Even in winter, the low prevalence of vitamin D deficiency found among participants with non-Sami, multi-ethnic Sami and Sami self-perceived ethnicity was likely due to adequate vitamin D intake.
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Lokki AI, Heikkinen-Eloranta J, Öhman H, Heinonen S, Surcel HM, Nielsen HS. Smoking during pregnancy reduces vitamin D levels in a Finnish birth register cohort. Public Health Nutr 2020; 23:1273-7. [PMID: 30732669 DOI: 10.1017/S1368980018003932] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Maternal vitamin D level in pregnancy may have implications for both the mother and fetus. Deficiency of vitamin D has been linked to several pregnancy complications and fetal skeletal health. Smoking has been associated with reduced serum level of the vitamin D metabolite, 25-hydroxyvitamin D (25(OH)D). DESIGN A nested case-control study within the Finnish Maternity Cohort, a population-based cohort which includes first-trimester sera from 98 % of pregnancies in Finland since 1987. The selection consisted of women with uncomplicated pregnancies. We studied serum concentration of 25(OH)D in 313 non-smoking and forty-six self-reported smoking pregnant women. SETTING We hypothesize that pregnant smokers may have an increased risk of low 25(OH)D levels especially during winter months. PARTICIPANTS A control group from an unpublished pregnancy complication study consisting of 359 uncomplicated pregnancies. Individuals who reported that they do not smoke were considered 'non-smokers' (n 313) and those who reported continued smoking after the first trimester of pregnancy were considered 'smokers' (n 46). RESULTS Smokers had significantly lower levels of 25(OH)D irrespective of sampling time (P<0·0001). Furthermore, during the low sun-exposure season, only 14 % of smokers met the guideline level of 40 nmol/l for serum 25(OH)D in comparison with 31 % of non-smokers. CONCLUSIONS Expectant mothers who smoke have an increased risk of vitamin D deficiency during low sun-exposure months in northern regions. Further studies are needed to assess the associated risks for maternal and fetal health as well as possible long-term implications for the infant.
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Hansen L, Tjønneland A, Køster B, Brot C, Andersen R, Cohen AS, Frederiksen K, Olsen A. Vitamin D Status and Seasonal Variation among Danish Children and Adults: A Descriptive Study. Nutrients 2018; 10:nu10111801. [PMID: 30463277 PMCID: PMC6265892 DOI: 10.3390/nu10111801] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 11/14/2018] [Accepted: 11/19/2018] [Indexed: 12/11/2022] Open
Abstract
The aim of the present study was to describe vitamin D status and seasonal variation in the general Danish population. In this study, 3092 persons aged 2 to 69 years (2565 adults, 527 children) had blood drawn twice (spring and autumn) between 2012 and 2014. A sub-sample of participants had blood samples taken monthly over a year. Serum 25-hydroxyvitamin D (25(OH)D) concentrations were measured by liquid chromatography mass spectrometry, and information on supplement use was assessed from questionnaires. Seasonal variations in 25(OH)D concentrations were evaluated graphically and descriptively, and status according to age, sex, and supplement use was described. It was found that 86% of both adults and children were vitamin D-sufficient in either spring and or/autumn; however, many had a spring concentration below 50 nmol/L. A wide range of 25(OH)D concentrations were found in spring and autumn, with very low and very high values in both seasons. Among adults, women in general had higher median 25(OH)D concentrations than men. Furthermore, vitamin D supplement use was substantial and affected the median concentrations markedly, more so during spring than autumn. Seasonal variation was thus found to be substantial, and bi-seasonal measurements are vital in order to capture the sizable fluctuations in vitamin D status in this Nordic population.
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Affiliation(s)
- Louise Hansen
- Diet, Genes and Environment, Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark.
| | - Anne Tjønneland
- Diet, Genes and Environment, Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark.
| | - Brian Køster
- Department of Prevention and Information, Danish Cancer Society, DK-2100 Copenhagen, Denmark.
| | - Christine Brot
- Danish Health Authority, Department of Prevention, DK-2300 Copenhagen, Denmark.
| | - Rikke Andersen
- National Food Institute, Research Group for Risk-Benefit, Technical University of Denmark, DK-2800 Lyngby, Denmark.
| | - Arieh S Cohen
- Statens Serum Institute, Department of Congenital Diseases, Center for Newborn Screening, DK-2300 Copenhagen, Denmark.
| | - Kirsten Frederiksen
- Statistics and Pharmacoepidemiology, Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark.
| | - Anja Olsen
- Diet, Genes and Environment, Danish Cancer Society Research Center, DK-2100 Copenhagen, Denmark.
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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: 176] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [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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Frigstad SO, Høivik ML, Jahnsen J, Cvancarova M, Grimstad T, Berset IP, Huppertz-Hauss G, Hovde Ø, Bernklev T, Moum B, Jelsness-Jørgensen LP. Fatigue is not associated with vitamin D deficiency in inflammatory bowel disease patients. World J Gastroenterol 2018; 24:3293-3301. [PMID: 30090009 PMCID: PMC6079290 DOI: 10.3748/wjg.v24.i29.3293] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/17/2018] [Accepted: 06/27/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate if vitamin D deficiency is associated with fatigue in patients with inflammatory bowel disease (IBD).
METHODS IBD patients were recruited from nine hospitals in the southeastern and western regions of Norway to participate in a multicenter cross-sectional study lasting from March 2013 to April 2014. Data were collected by interviews, from medical records and laboratory tests. The Fatigue Questionnaire (FQ) was used to measure fatigue. Linear and logistic regression models were applied to explore the possible association between vitamin D deficiency and total fatigue scores and chronic fatigue, respectively. The analyses were adjusted for age, gender, disease activity, depressive symptoms and sleep disturbance.
RESULTS In total, 405 patients were included in the analyses, of which 227 (56%) had Crohn’s disease (CD) and 178 (44%) had ulcerative colitis (UC). Vitamin D deficiency (< 50 nmol/L) was present in half (203/405) of the patients. Chronic fatigue was reported by 116 (29%) of all included patients with substantial fatigue reported by 194 (48%). Vitamin D levels were neither associated with total fatigue nor with chronic fatigue. Higher total fatigue scores and chronic fatigue were both associated with increased disease activity scores in patients with UC and CD, but not with increased CRP or fecal calprotectin. In UC patients, female gender was associated with fatigue in the univariate analysis, but no such difference was found when adjusted for elevated disease activity scores. Sleep disturbance and more depressive symptoms were associated with total fatigue scores in both UC and CD patients, but with chronic fatigue only in CD patients.
CONCLUSION In this study, no significant association between fatigue and vitamin D deficiency in IBD patients was revealed.
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Affiliation(s)
- Svein Oskar Frigstad
- Department of Medicine, Vestre Viken Bærum Hospital, Gjettum 1346, Norway
- Department of Research, Østfold Hospital Kalnes, Grålum 1714, Norway
| | - Marte Lie Høivik
- Department of Gastroenterology, Oslo University Hospital, Oslo 0424, Norway
| | - Jørgen Jahnsen
- Department of Gastroenterology, Akershus University Hospital, Lørenskog 1478, Norway
| | - Milada Cvancarova
- Faculty of Health Sciences, Oslo Metropolitan University, Oslo 0130, Norway
| | - Tore Grimstad
- Department of Gastroenterology, Stavanger University Hospital, Stavanger 4068, Norway
| | | | | | - Øistein Hovde
- Department of Medicine, Innlandet Hospital Trust, Gjøvik 2819, Norway
| | - Tomm Bernklev
- Department of Research and Development, Vestfold Hospital Trust, Tønsberg 3103, Norway
| | - Bjørn Moum
- Department of Gastroenterology, Oslo University Hospital, Oslo 0424, Norway
| | - Lars-Petter Jelsness-Jørgensen
- Department of Gastroenterology, Østfold Hospital Kalnes, Grålum 1714, Norway
- Department of Health Sciences, Østfold University College, Halden 1757, Norway
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