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Trefilio LM, Bottino L, de Carvalho Cardoso R, Montes GC, Fontes-Dantas FL. The impact of genetic variants related to vitamin D and autoimmunity: A systematic review. Heliyon 2024; 10:e27700. [PMID: 38689997 PMCID: PMC11059421 DOI: 10.1016/j.heliyon.2024.e27700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 02/14/2024] [Accepted: 03/05/2024] [Indexed: 05/02/2024] Open
Abstract
Over the past few years, there has been a notable increment in scientific literature aimed at unraveling the genetic foundations of vitamin D signaling and its implications for susceptibility to autoimmunity, however, most of them address isolated diseases. Here, we conducted a systematic review of genetic variants related to vitamin D and autoimmune diseases and we discussed the current landscape of susceptibility and outcomes. Of 65 studies analyzed, most variants cited are in vitamin D binding protein (VDBP; rs2282679 GC gene), 25-hydroxylase (rs10751657 CYP2R1), 1α-hydroxylase (rs10877012, CYP27B1) and the nuclear hormone receptor superfamily [FokI (rs2228570), BsmI (rs1544410), ApaI (rs7975232), and TaqI (rs731236) in VDR gene]. Therefore, our findings confirmed the associations of several genetic variants of vitamin D signaling with a broad spectrum of autoimmune diseases/traits. In addition, given the low number of papers found with functional analysis, further studies to elucidate the real effect that the variants exert on Vitamin D signaling are recommended.
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Affiliation(s)
- Luisa Menezes Trefilio
- Universidade Estadual do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Departamento de Farmacologia e Psicobiologia, Rio de Janeiro RJ, Brazil
- Universidade Federal do Estado do Rio de Janeiro, Instituto Biomédico, Rio de Janeiro RJ, Brazil
| | - Letícia Bottino
- Universidade Estadual do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Departamento de Farmacologia e Psicobiologia, Rio de Janeiro RJ, Brazil
- Universidade Federal do Estado do Rio de Janeiro, Escola de Medicina, Rio de Janeiro RJ, Brazil
| | - Rafaella de Carvalho Cardoso
- Universidade Estadual do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Departamento de Farmacologia e Psicobiologia, Rio de Janeiro RJ, Brazil
- Universidade Estadual do Rio de Janeiro, Programa de Pós-Graduação em Fisiopatologia Clínica e Experimental, Rio de Janeiro RJ, Brazil
| | - Guilherme Carneiro Montes
- Universidade Estadual do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Departamento de Farmacologia e Psicobiologia, Rio de Janeiro RJ, Brazil
- Universidade Estadual do Rio de Janeiro, Programa de Pós-Graduação em Fisiopatologia Clínica e Experimental, Rio de Janeiro RJ, Brazil
| | - Fabrícia Lima Fontes-Dantas
- Universidade Estadual do Rio de Janeiro, Instituto de Biologia Roberto Alcântara Gomes, Departamento de Farmacologia e Psicobiologia, Rio de Janeiro RJ, Brazil
- Universidade Estadual do Rio de Janeiro, Programa de Pós-Graduação em Fisiopatologia Clínica e Experimental, Rio de Janeiro RJ, Brazil
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Shafi T, Rasool R, Ayub S, Bhat IA, Gull A, Hussain S, Hassan Shah I, Shah ZA. Analysis of intronic SNP (rs4147358) and expression of SMAD3 gene in Atopic Dermatitis: A case-control study. Immunobiology 2023; 228:152390. [PMID: 37100019 DOI: 10.1016/j.imbio.2023.152390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 04/10/2023] [Accepted: 04/18/2023] [Indexed: 04/28/2023]
Abstract
BACKGROUND Atopic Dermatitis (AD) is a multifactorial cutaneous disorder associated with chronic inflammation of the skin. Growing evidence points to TGF-β/SMAD signaling as a key player in mediating inflammation and the subsequent tissue remodeling, often resulting in fibrosis. This study investigates the role of a core transcription factor involved in TGF-β signaling i.e., SMAD3 genetic variants (rs4147358) in AD predisposition and its association with SMAD3 mRNA expression, serum IgE levels, and sensitization to various allergens in AD patients. METHODS A total of 246 subjects including 134 AD cases and 112 matched healthy controls were genotyped for SMAD3 intronic SNP by PCR-RFLP. mRNA expression of SMAD3 was determined by quantitative Real-Time PCR (qRT-PCR), Vitamin-D levels by chemiluminescence, and total serum IgE levels by ELISA. In-vivo allergy testing was performed for the evaluation of allergic reactions to house dust mites (HDM) and food allergens. RESULTS A significantly higher frequency of mutant genotype AA (cases: 19.4% vs controls: 8.9%) (OR = 2.8, CI = 1.2 - 6.7, p = 0.01) was observed in AD cases. The mutant allele 'A' also showed a 1.9-fold higher risk for AD compared to the wild allele 'C' indicating that the carriers of the A allele have a higher risk for AD predisposition (OR-1.9, CI = 1.3-2.8, p < 0.001). In addition, quantitative analysis of SMAD3 mRNA in peripheral blood showed 2.8-fold increased expression in AD cases as compared to healthy controls. Stratification analysis revealed the association of the mutant AA genotype with deficient serum Vitamin D levels (p = 0.02) and SMAD3 mRNA overexpression with HDM sensitization (p = 0.03). Furthermore, no significant association of genotypes with SMAD3 mRNA expression was observed. CONCLUSION Our study indicates that SMAD3 intronic SNP bears a significant risk of AD development. Moreover, overexpression of SMAD3 mRNA and its association with HDM sensitization highlights the possible role of this gene in AD pathogenesis.
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Affiliation(s)
- Tabasum Shafi
- Department of Immunology & Molecular Medicine, SKIMS, Srinagar 190011, India
| | - Roohi Rasool
- Department of Immunology & Molecular Medicine, SKIMS, Srinagar 190011, India.
| | - Sakeena Ayub
- Department of Immunology & Molecular Medicine, SKIMS, Srinagar 190011, India
| | - Imtiyaz A Bhat
- Department of Immunology & Molecular Medicine, SKIMS, Srinagar 190011, India
| | - Ayaz Gull
- Department of Immunology & Molecular Medicine, SKIMS, Srinagar 190011, India
| | - Showkat Hussain
- Department of Immunology & Molecular Medicine, SKIMS, Srinagar 190011, India
| | - Iffat Hassan Shah
- Department of Dermatology, Venereology, and Leprosy, GMC- Srinagar 190010, India
| | - Zafar A Shah
- Department of Immunology & Molecular Medicine, SKIMS, Srinagar 190011, India
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Della Nera G, Sabatino L, Gaggini M, Gorini F, Vassalle C. Vitamin D Determinants, Status, and Antioxidant/Anti-inflammatory-Related Effects in Cardiovascular Risk and Disease: Not the Last Word in the Controversy. Antioxidants (Basel) 2023; 12:antiox12040948. [PMID: 37107323 PMCID: PMC10135791 DOI: 10.3390/antiox12040948] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/14/2023] [Accepted: 04/15/2023] [Indexed: 04/29/2023] Open
Abstract
Beyond its key role in calcium homeostasis, vitamin D has been found to significantly affect the cardiovascular (CV) system. In fact, low vitamin D levels have been associated with increased CV risk, as well as increased CV morbidity and mortality. The majority of effects of this molecule are related directly or indirectly to its antioxidative and anti-inflammatory properties. Generally, vitamin D insufficiency is considered for 25-hydroxyvitamin D (25(OH)D) levels between 21-29 ng/mL (corresponding to 52.5-72.5 nmol/L), deficiency as 25(OH)D levels less than 20 ng/mL (<50 nmol/L), and extreme deficiency as 25(OH)D less than 10 ng/mL (<25 nmol/L). However, the definition of an optimal vitamin D status, as defined by 25(OH)D, remains controversial for many extra-bone conditions, including CV disease. In this review, confounding factors affecting the 25(OH)D measurement and status will be discussed. In particular, available evidence on the mechanism and role of vitamin D in relation to CV risk and disease through its antioxidant effect will be reported, also facing the aspect regarding the debate on the minimum blood 25(OH)D level required to ensure optimal CV health.
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Haq T, Tomalika N, Mohsena M, Momtaz H, Banu A, Chowdhury MMH, Hashem KN, Tagar MM, Morshed MS, Sayeed MA. Vitamin D levels in seven non-identical occupational groups entail redefining of existing vitamin D deficiency diagnostic cut off level for native Bangladeshi population. IMC JOURNAL OF MEDICAL SCIENCE 2023. [DOI: 10.55010/imcjms.17.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
Background and objectives: Recent publications have reported alarming prevalence of hypovitaminosis D in South Asian countries including Bangladesh. But, data on vitamin D levels in different occupational groups are lacking. This study addressed the prevalence of hypovitaminosis D in different occupational groups of Bangladesh. Additionally, the study estimated parathyroid hormone, phosphate, calcium and metabolic syndrome in these groups to see the effect of hypovitaminosis D on these parameters.
Materials and method: Seven diverse occupational groups (agrarian workers, rickshaw-pullers, young cricketers and footballers, fishermen, dry fish industry workers, garment-workers and medical students) of Bangladesh were selected based on grade of physical activity and level of sun exposure. Blood was collected for the estimation of 25(OH) vitamin D, fasting glucose,lipid profiles, calcium, phosphate, magnesium and intact parathyroid (iPTH) hormone. Multiple comparisons of these variables among the 7 groups were estimated by ANOVA.
Results: A total of 785 (m / f = 359 / 426) participants volunteered. Of them, 54.2% had vitamin D deficiency. Metabolic syndrome was 5% and showed no significant association with hypovitaminosis D (x2 = 0.9, p=0.43). For biophysical characteristics, the mean (±SD) values of age, body mass index, waist to hip ratio and waist to height ratio were – 33.8±16.3y, 22.3±4.1 kg/m2, 0.87±0.06 and 0.39±0.16, respectively. The values for vitamin D (ng/ml), calcium (mg/dl), iPTH (pgm/ml) and phosphate (mg/dl) were 20.25±13.1, 9.57±1.85, 38.22±24.54 and 4.18±0.81, respectively. The comparisons of vitamin D and other related variables among the groups (ANOVA) showed vitamin D level in the garments worker was significantly (p<0.01) higher from other 6 groups. Likewise, compared with other six, rickshaw-pullers had significantly higher calcium level. Calcium, phosphate and parathyroid hormone did not show any change with decreasing vitamin D level (high to low quartile: Q4→Q1), though parathyroid hormone increased significantly at the lowest vitamin D level (Q1:<11.8ng/ml: p=0.002).
Conclusion: The prevalence of hypovitaminosis D was high irrespective of occupations, site (rural/urban), social class and sun-exposure. Overall, vitamin D level was low though varied among the groups. Despite minimum and maximum sun-exposure, the garments workers had the highest and the fishermen had the lowest vitamin D levels, respectively. Calcium level was normal in all groups. Calcium, phosphate and parathyroid hormone did not show any changes with decreasing vitamin D, though parathyroid hormone increased significantly when vitamin D decreased to the lowest quartile. The findings indicate that the specific cut off value for vitamin D deficiency needs to be determined for population of a given geographic area.
IMC J Med Sci. 2023; 17(2):001. DOI: https://doi.org/10.55010/imcjms.17.011
*Correspondence: M Abu Sayeed, Department of Community Medicine, Ibrahim Medical College, 1/A, Ibrahim Sarani, Segunbagicha, Dhaka 1000, Bangladesh. Email: sayeed1950@gmail.com
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Affiliation(s)
- Tahniyah Haq
- Department of Endocrinology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka, Bangladesh
| | - Nehlin Tomalika
- Department of Community Medicine, Ibrahim Medical College, Segunbagicha, Dhaka, Bangladesh
| | - Masuda Mohsena
- Department of Community Medicine, Ibrahim Medical College, Segunbagicha, Dhaka, Bangladesh
| | - Hasina Momtaz
- Department of Community Medicine, Ibrahim Medical College, Segunbagicha, Dhaka, Bangladesh
| | - Akhter Banu
- Institute of Nutrition and Food Science, University of Dhaka, Dhaka, Bangladesh
| | | | - Kazi Natasha Hashem
- Department of Gynaecology & Obstetrics, Bangladesh Institute of Research and Rehabilitation in Diabetes, Endocrine and Metabolic Disorders (BIRDEM), Shahbag, Dhaka, Bangladesh
| | - Md Mohiuddin Tagar
- Department of Community Medicine, Ibrahim Medical College, Segunbagicha, Dhaka, Bangladesh
| | | | - MA Sayeed
- Department of Community Medicine, Ibrahim Medical College, Segunbagicha, Dhaka, Bangladesh
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Asghari G, Yuzbashian E, Nikparast A, Najd Hassan Bonab L, Mahdavi M, Daneshpour MS, Hosseinpanah F, Mirmiran P. Impact of daily vitamin D 3 supplementation on the risk of vitamin D deficiency with the interaction of rs2282679 in vitamin D binding protein gene (GC) among overweight and obese children and adolescents: A one-year randomized controlled trial. Front Nutr 2022; 9:1061496. [PMID: 36579074 PMCID: PMC9792175 DOI: 10.3389/fnut.2022.1061496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 11/11/2022] [Indexed: 12/14/2022] Open
Abstract
Background The rs2282679 polymorphism in the vitamin D binding protein (DBP) gene may influence the response to vitamin D supplementation. Therefore, we examine the effect of 1-year vitamin D supplementation on vitamin D deficiency (VDD) with the interaction of rs2282679 polymorphism in overweight and obese children and adolescents. Materials and methods The participants (n = 300) were part of a randomized controlled trial who received a daily supplement of either 1,000 or 2,000 IU or four supplements of 1,000 IU weekly (equal to 600 IU daily) of vitamin D3 for 12 months. Genotyping was performed using amplification refractory mutation system polymerase chain reaction (ARMS-PCR). Results The mean of 25(OH)D values at baseline for participants with the TT, TG, and GG genotypes were 15.4, 14.4, and 10.8 ng/mL, respectively, and were not different between the three genotype groups (P = 0.062). A significant reduction in VDD was observed after vitamin D supplementation with dosages of 1,000 or 2,000 IU compared to 600 IU. No significant association of genotypes with risk of VDD was observed in each intervention group after vitamin D supplementation, except, that individuals with TG genotype showed a higher risk of VDD compared to those with TT genotype in the 2,000 IU group after 6 months of supplementation [odds ratio (95% CI): 6.94; 1.30-37.02]. We observed no interaction between time duration, three genotypes, and dosages with serum 25(OH)D, calcium, phosphorus, alkaline phosphatase, and parathyroid hormone levels. Conclusion Response to vitamin D supplementation by three doses of 600, 1,000, and 2,000 IU could not be affected by rs2282679 polymorphism during 12 months in overweight and obese children and adolescents.
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Affiliation(s)
- Golaleh Asghari
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Emad Yuzbashian
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Department of Agricultural, Food and Nutritional Sciences, University of Alberta, Edmonton, AB, Canada
| | - Ali Nikparast
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Leila Najd Hassan Bonab
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Mahdavi
- Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam S. Daneshpour
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farhad Hosseinpanah
- Obesity Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran,Farhad Hosseinpanah,
| | - Parvin Mirmiran
- Nutrition and Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran,*Correspondence: Parvin Mirmiran, ;
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Hyppönen E, Vimaleswaran KS, Zhou A. Genetic Determinants of 25-Hydroxyvitamin D Concentrations and Their Relevance to Public Health. Nutrients 2022; 14:4408. [PMID: 36297091 PMCID: PMC9606877 DOI: 10.3390/nu14204408] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 11/16/2022] Open
Abstract
Twin studies suggest a considerable genetic contribution to the variability in 25-hydroxyvitamin D (25(OH)D) concentrations, reporting heritability estimates up to 80% in some studies. While genome-wide association studies (GWAS) suggest notably lower rates (13−16%), they have identified many independent variants that associate with serum 25(OH)D concentrations. These discoveries have provided some novel insight into the metabolic pathway, and in this review we outline findings from GWAS studies to date with a particular focus on 35 variants which have provided replicating evidence for an association with 25(OH)D across independent large-scale analyses. Some of the 25(OH)D associating variants are linked directly to the vitamin D metabolic pathway, while others may reflect differences in storage capacity, lipid metabolism, and pathways reflecting skin properties. By constructing a genetic score including these 25(OH)D associated variants we show that genetic differences in 25(OH)D concentrations persist across the seasons, and the odds of having low concentrations (<50 nmol/L) are about halved for individuals in the highest 20% of vitamin D genetic score compared to the lowest quintile, an impact which may have notable influences on retaining adequate levels. We also discuss recent studies on personalized approaches to vitamin D supplementation and show how Mendelian randomization studies can help inform public health strategies to reduce adverse health impacts of vitamin D deficiency.
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Affiliation(s)
- Elina Hyppönen
- Australian Centre for Precision Health, Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
- South Australian Health and Medical Research Institute, Adelaide, SA 5001, Australia
| | - Karani S. Vimaleswaran
- Hugh Sinclair Unit of Human Nutrition, Department of Food and Nutritional Sciences, University of Reading, Reading RG6 6DZ, UK
- The Institute for Food, Nutrition and Health (IFNH), University of Reading, Reading RG6 6DZ, UK
| | - Ang Zhou
- Australian Centre for Precision Health, Clinical and Health Sciences, University of South Australia, Adelaide, SA 5001, Australia
- South Australian Health and Medical Research Institute, Adelaide, SA 5001, Australia
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Sparks AM, Johnston SE, Handel I, Pilkington JG, Berry J, Pemberton JM, Nussey DH, Mellanby RJ. Vitamin D status is heritable and under environment-dependent selection in the wild. Mol Ecol 2022; 31:4607-4621. [PMID: 34888965 PMCID: PMC9545857 DOI: 10.1111/mec.16318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 11/12/2021] [Accepted: 11/24/2021] [Indexed: 11/30/2022]
Abstract
Vitamin D has a well-established role in skeletal health and is increasingly linked to chronic disease and mortality in humans and companion animals. Despite the clear significance of vitamin D for health and obvious implications for fitness under natural conditions, no longitudinal study has tested whether the circulating concentration of vitamin D is under natural selection in the wild. Here, we show that concentrations of dietary-derived vitamin D2 and endogenously produced vitamin D3 metabolites are heritable and largely polygenic in a wild population of Soay sheep (Ovis aries). Vitamin D2 status was positively associated with female adult survival, and vitamin D3 status predicted female fecundity in particular, good environment years when sheep density and competition for resources was low. Our study provides evidence that vitamin D status has the potential to respond to selection, and also provides new insights into how vitamin D metabolism is associated with fitness in the wild.
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Affiliation(s)
- Alexandra M. Sparks
- Institute of Evolutionary BiologySchool of Biological SciencesUniversity of EdinburghEdinburghUK
- Faculty of Biological SciencesSchool of BiologyUniversity of LeedsLeedsUK
| | - Susan E. Johnston
- Institute of Evolutionary BiologySchool of Biological SciencesUniversity of EdinburghEdinburghUK
| | - Ian Handel
- Royal (Dick) School of Veterinary Studies and The Roslin InstituteThe University of EdinburghHospital for Small AnimalsRoslinUK
| | - Jill G. Pilkington
- Institute of Evolutionary BiologySchool of Biological SciencesUniversity of EdinburghEdinburghUK
| | - Jacqueline Berry
- Specialist Assay Laboratory (Vitamin D)Clinical BiochemistryManchester Royal InfirmaryManchesterUK
| | - Josephine M. Pemberton
- Institute of Evolutionary BiologySchool of Biological SciencesUniversity of EdinburghEdinburghUK
| | - Daniel H. Nussey
- Institute of Evolutionary BiologySchool of Biological SciencesUniversity of EdinburghEdinburghUK
| | - Richard J. Mellanby
- Royal (Dick) School of Veterinary Studies and The Roslin InstituteThe University of EdinburghHospital for Small AnimalsRoslinUK
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Shraim R, MacDonnchadha C, Vrbanic L, McManus R, Zgaga L. Gene-Environment Interactions in Vitamin D Status and Sun Exposure: A Systematic Review with Recommendations for Future Research. Nutrients 2022; 14:nu14132735. [PMID: 35807923 PMCID: PMC9268458 DOI: 10.3390/nu14132735] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/21/2022] [Accepted: 06/24/2022] [Indexed: 02/06/2023] Open
Abstract
Vitamin D is essential for good health. Dermal vitamin D production is dependent on environmental factors such as season and latitude, and personal factors such as time spent outdoors and genetics. Varying heritability of vitamin D status by season has been reported, suggesting that gene-environment interactions (GxE) may play a key role. Thus, understanding GxE might significantly improve our understanding of determinants of vitamin D status. The objective of this review was to survey the existing methods in GxE on vitamin D studies and report on GxE effect estimates. We searched the Embase, Medline (Ovid), and Web of Science (Core Collection) databases. We included only primary research that reported on GxE effects on vitamin D status using 25-hydroxyvitamin D as a biomarker. Sun exposure was the only environmental exposure identified in these studies. The quality assessment followed the Newcastle–Ottawa Scale for cohort studies. Seven studies were included in the final narrative synthesis. We evaluate the limitations and findings of the available GxE in vitamin D research and provide recommendations for future GxE research. The systematic review was registered on PROSPERO (CRD42021238081).
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Affiliation(s)
- Rasha Shraim
- Department of Public Health and Primary Care, Institute of Population Health, Trinity College Dublin, D24 DH74 Dublin, Ireland; (R.S.); (C.M.); (L.V.)
- Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, D08 W9RT Dublin, Ireland;
- The SFI Centre for Research Training in Genomics Data Sciences, National University of Ireland Galway, H91 CF50 Galway, Ireland
| | - Conor MacDonnchadha
- Department of Public Health and Primary Care, Institute of Population Health, Trinity College Dublin, D24 DH74 Dublin, Ireland; (R.S.); (C.M.); (L.V.)
- Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, D08 W9RT Dublin, Ireland;
| | - Lauren Vrbanic
- Department of Public Health and Primary Care, Institute of Population Health, Trinity College Dublin, D24 DH74 Dublin, Ireland; (R.S.); (C.M.); (L.V.)
- Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, D08 W9RT Dublin, Ireland;
| | - Ross McManus
- Department of Clinical Medicine, Trinity Translational Medicine Institute, Trinity College Dublin, D08 W9RT Dublin, Ireland;
| | - Lina Zgaga
- Department of Public Health and Primary Care, Institute of Population Health, Trinity College Dublin, D24 DH74 Dublin, Ireland; (R.S.); (C.M.); (L.V.)
- Correspondence:
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9
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Vanderlinden LA, Bemis EA, Seifert J, Guthridge JM, Young KA, Demoruelle MK, Feser M, DeJager W, Macwana S, Mikuls TR, O'Dell JR, Weisman MH, Buckner J, Keating RM, Gaffney PM, Kelly JA, Langefeld CD, Deane KD, James JA, Holers VM, Norris JM. Relationship Between a Vitamin D Genetic Risk Score and Autoantibodies Among First-Degree Relatives of Probands With Rheumatoid Arthritis and Systemic Lupus Erythematosus. Front Immunol 2022; 13:881332. [PMID: 35720397 PMCID: PMC9205604 DOI: 10.3389/fimmu.2022.881332] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 05/09/2022] [Indexed: 12/28/2022] Open
Abstract
Objective Higher 25-hydroxyvitamin D (25(OH)D) levels have been associated with reduced risk for autoimmune diseases and are influenced by vitamin D metabolism genes. We estimated genetically-determined vitamin D levels by calculating a genetic risk score (GRS) and investigated whether the vitamin D GRS was associated with the presence of autoantibodies related to rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE) in those at increased risk for developing RA and SLE, respectively. Methods In this cross-sectional study, we selected autoantibody positive (aAb+) and autoantibody negative (aAb-) individuals from the Studies of the Etiologies of Rheumatoid Arthritis (SERA), a cohort study of first-degree relatives (FDRs) of individuals with RA (189 RA aAb+, 181 RA aAb-), and the Lupus Family Registry and Repository (LFRR), a cohort study of FDRs of individuals with SLE (157 SLE aAb+, 185 SLE aAb-). Five SNPs known to be associated with serum 25(OH)D levels were analyzed individually as well as in a GRS: rs4588 (GC), rs12785878 (NADSYN1), rs10741657 (CYP2R1), rs6538691 (AMDHD1), and rs8018720 (SEC23A). Results Both cohorts had similar demographic characteristics, with significantly older and a higher proportion of males in the aAb+ FDRs. The vitamin D GRS was inversely associated with RA aAb+ (OR = 0.85, 95% CI = 0.74-0.99), suggesting a possible protective factor for RA aAb positivity in FDRs of RA probands. The vitamin D GRS was not associated with SLE aAb+ in the LFRR (OR = 1.09, 95% CI = 0.94-1.27). The SEC23A SNP was associated with RA aAb+ in SERA (OR = 0.65, 95% CI = 0.43-0.99); this SNP was not associated with SLE aAb+ in LFRR (OR = 1.41, 95% CI = 0.90 - 2.19). Conclusion Genes associated with vitamin D levels may play a protective role in the development of RA aAbs in FDRs of RA probands, perhaps through affecting lifelong vitamin D status. The GRS and the SEC23A SNP may be of interest for future investigation in pre-clinical RA. In contrast, these results do not support a similar association in SLE FDRs, suggesting other mechanisms involved in the relationship between vitamin D and SLE aAbs not assessed in this study.
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Affiliation(s)
- Lauren A Vanderlinden
- Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Elizabeth A Bemis
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Jennifer Seifert
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Joel M Guthridge
- Arthritis & Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - Kendra A Young
- Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Mary Kristen Demoruelle
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Marie Feser
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Wade DeJager
- Arthritis & Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - Susan Macwana
- Arthritis & Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - Ted R Mikuls
- Division of Rheumatology and Immunology, University of Nebraska Medical Center and VA Nebraska-Western Iowa Health Care System, Omaha, NE, United States
| | - James R O'Dell
- Division of Rheumatology and Immunology, University of Nebraska Medical Center and VA Nebraska-Western Iowa Health Care System, Omaha, NE, United States
| | - Michael H Weisman
- Division of Rheumatology, Cedars-Sinai Medical Center, Los Angeles, CA, United States
| | - Jane Buckner
- Center for Translational Immunology, Benaroya Research Institute (BRI) at Virginia Mason, Seattle, WA, United States
| | - Richard M Keating
- Division of Rheumatology, Scripps Health, La Jolla, CA, United States
| | - Patrick M Gaffney
- Arthritis & Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - Jennifer A Kelly
- Arthritis & Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - Carl D Langefeld
- Department of Biostatistics and Data Science, Wake Forest School of Medicine, Winston Salem, NC, United States.,Center for Precision Medicine, Wake Forest School of Medicine, Winston Salem, NC, United States
| | - Kevin D Deane
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Judith A James
- Arthritis & Clinical Immunology Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, United States
| | - Vernon Michael Holers
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Jill M Norris
- Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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10
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Vitamin D status and associations with diet, objectively measured physical activity patterns and background characteristics among adolescents in a representative national cross-sectional survey. Public Health Nutr 2022; 25:1427-1437. [PMID: 35067271 PMCID: PMC9991641 DOI: 10.1017/s1368980022000222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE To report on vitamin D status, measured as plasma 25-hydroxyvitamin D concentration (25(OH)D), the prevalence of vitamin D insufficiency and deficiency, and to explore associations between vitamin D status and background characteristics. DESIGN Data were collected in a National Dietary Survey, Riksmaten adolescents 2016-2017. The participants completed dietary assessments and questionnaires on the web and wore accelerometers. (25(OH)D) was measured with a MS method. SETTING Representative survey conducted in schools throughout Sweden. PARTICIPANTS Participants attended school years 5 (Y5, mean age 12. 5 years), 8 (Y8, mean age 14. 5 years) and 11 (Y11, mean age 18 years), and included 1100 participants. RESULTS Overall, there was no difference in plasma 25(OH)D between girls and boys. Vitamin D insufficiency differed between the three school years. The prevalence of insufficiency in Y5 was 32 (boys) and 48 (girls) percent, while in Y11 62 (boys) and 43 (girls) percent. The prevalence of deficiency in Y11 was 16 and 15 % in boys and girls, respectively. Being born outside of Sweden was associated with a 10-fold increased risk of being vitamin D deficient. Deficiency was also associated with longer time spent in sedentary intensity, a lower consumption of fortified dairy products and fats and oils. CONCLUSIONS Vitamin D deficiency was most common in the oldest age group and being born outside of Sweden increased the risk of being deficient. The present study will form a baseline for future follow-up studies of the implementation of a new mandatory vitamin D fortification policy in 2018.
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11
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Singh P, Harris PC, Sas DJ, Lieske JC. The genetics of kidney stone disease and nephrocalcinosis. Nat Rev Nephrol 2022; 18:224-240. [PMID: 34907378 DOI: 10.1038/s41581-021-00513-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2021] [Indexed: 12/15/2022]
Abstract
Kidney stones (also known as urinary stones or nephrolithiasis) are highly prevalent, affecting approximately 10% of adults worldwide, and the incidence of stone disease is increasing. Kidney stone formation results from an imbalance of inhibitors and promoters of crystallization, and calcium-containing calculi account for over 80% of stones. In most patients, the underlying aetiology is thought to be multifactorial, with environmental, dietary, hormonal and genetic components. The advent of high-throughput sequencing techniques has enabled a monogenic cause of kidney stones to be identified in up to 30% of children and 10% of adults who form stones, with ~35 different genes implicated. In addition, genome-wide association studies have implicated a series of genes involved in renal tubular handling of lithogenic substrates and of inhibitors of crystallization in stone disease in the general population. Such findings will likely lead to the identification of additional treatment targets involving underlying enzymatic or protein defects, including but not limited to those that alter urinary biochemistry.
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Affiliation(s)
- Prince Singh
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - Peter C Harris
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA.,Division of Molecular Biology and Biochemistry, Mayo Clinic, Rochester, MN, USA
| | - David J Sas
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA.,Division of Pediatric Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA
| | - John C Lieske
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN, USA. .,Division of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
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12
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Lai HJ, Chin LH, Murali S, Bach T, Sander D, Farrell PM. Vitamins A, D, E status as related to supplementation and lung disease markers in young children with cystic fibrosis. Pediatr Pulmonol 2022; 57:935-944. [PMID: 35018747 PMCID: PMC8930603 DOI: 10.1002/ppul.25825] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 12/22/2021] [Accepted: 01/08/2022] [Indexed: 01/22/2023]
Abstract
BACKGROUND The variable response to fat-soluble vitamin supplementation in young children with cystic fibrosis (CF), and factors contributing to this variability, remain under-investigated. OBJECTIVE To determine if recommended supplement doses normalize serum vitamins A (retinol), D (25-hydroxy-vitamin D, 25OHD), and E (α-tocopherol), and identify factors predictive of achieving sufficiency, in children with CF in the first 3 years of life. DESIGN We studied 144 infants born during 2012-2017 and diagnosed with CF through newborn screening. Serum retinol, 25OHD, α-tocopherol and plasma cytokines interleukin (IL)-6, IL-8, IL-10, and tumor necrosis factor (TNF)-α were measured in early infancy and yearly thereafter. Vitamin supplement intakes and respiratory microbiology were assessed every 1-2 months in infancy and quarterly thereafter. RESULTS The prevalence of vitamin D insufficiency (<30 ng/ml) at all ages combined was significantly higher (22%) compared to vitamin A (<200 ng/ml, 3%) and vitamin E (<5 µg/ml, 5%). All children were vitamin A sufficient by age 2 years. Vitamin E insufficiency was rare. Only 42% were early responders of vitamin D and 17% remain insufficient despite high supplement intakes. IL-6 was positively correlated, while IL-8, IL-10, and TNF-α were negatively correlated, with retinol and 25OHD. Multiple regression analysis revealed that supplement dose, season, α-tocopherol, pancreatic insufficiency, respiratory infections and IL-10 were significant predictors of 25OHD. CONCLUSION Diagnosis through newborn screening coupled with supplementation normalized serum retinol and α-tocopherol in almost all infants with CF by age 3 years. However, response to vitamin D supplements in young children with CF occurred later and variably despite early and sustained supplementation.
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Affiliation(s)
- HuiChuan J Lai
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA.,Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Lyanne H Chin
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Sangita Murali
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Taiya Bach
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Danielle Sander
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Philip M Farrell
- Department of Pediatrics, University of Wisconsin-Madison, Madison, Wisconsin, USA.,Department of Population Health Sciences, University of Wisconsin-Madison, Madison, Wisconsin, USA
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13
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Park JW, Kim ST, Lee KS, Gong HS. Vitamin D Status in Dupuytren's Disease: Association with Clinical Status and Vitamin D Receptor Expression. J Plast Reconstr Aesthet Surg 2022; 75:1916-1922. [DOI: 10.1016/j.bjps.2022.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 10/15/2021] [Accepted: 01/08/2022] [Indexed: 10/19/2022]
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14
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Kim YA, Yoon JW, Lee Y, Choi HJ, Yun JW, Bae E, Kwon SH, Ahn SE, Do AR, Jin H, Won S, Park DJ, Shin CS, Seo JH. Unveiling Genetic Variants Underlying Vitamin D Deficiency in Multiple Korean Cohorts by a Genome-Wide Association Study. Endocrinol Metab (Seoul) 2021; 36:1189-1200. [PMID: 34852423 PMCID: PMC8743587 DOI: 10.3803/enm.2021.1241] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 10/19/2021] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Epidemiological data have shown that vitamin D deficiency is highly prevalent in Korea. Genetic factors influencing vitamin D deficiency in humans have been studied in Europe but are less known in East Asian countries, including Korea. We aimed to investigate the genetic factors related to vitamin D levels in Korean people using a genome-wide association study (GWAS). METHODS We included 12,642 subjects from three different genetic cohorts consisting of Korean participants. The GWAS was performed on 7,590 individuals using linear or logistic regression meta- and mega-analyses. After identifying significant single nucleotide polymorphisms (SNPs), we calculated heritability and performed replication and rare variant analyses. In addition, expression quantitative trait locus (eQTL) analysis for significant SNPs was performed. RESULTS rs12803256, in the actin epsilon 1, pseudogene (ACTE1P) gene, was identified as a novel polymorphism associated with vitamin D deficiency. SNPs, such as rs11723621 and rs7041, in the group-specific component gene (GC) and rs11023332 in the phosphodiesterase 3B (PDE3B) gene were significantly associated with vitamin D deficiency in both meta- and mega-analyses. The SNP heritability of the vitamin D concentration was estimated to be 7.23%. eQTL analysis for rs12803256 for the genes related to vitamin D metabolism, including glutamine-dependent NAD(+) synthetase (NADSYN1) and 7-dehydrocholesterol reductase (DHCR7), showed significantly different expression according to alleles. CONCLUSION The genetic factors underlying vitamin D deficiency in Korea included polymorphisms in the GC, PDE3B, NADSYN1, and ACTE1P genes. The biological mechanism of a non-coding SNP (rs12803256) for DHCR7/NADSYN1 on vitamin D concentrations is unclear, warranting further investigations.
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Affiliation(s)
- Ye An Kim
- Division of Endocrinology, Department of Internal Medicine, Veterans Health Service Medical Center, Seoul,
Korea
| | - Ji Won Yoon
- Healthcare System Gangnam Center, Seoul National University Hospital, Seoul,
Korea
| | - Young Lee
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul,
Korea
| | - Hyuk Jin Choi
- Healthcare System Gangnam Center, Seoul National University Hospital, Seoul,
Korea
| | - Jae Won Yun
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul,
Korea
| | - Eunsin Bae
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul,
Korea
| | - Seung-Hyun Kwon
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul,
Korea
| | - So Eun Ahn
- Department of Public Health Science, Seoul National University, Seoul,
Korea
| | - Ah-Ra Do
- Department of Public Health Science, Seoul National University, Seoul,
Korea
| | - Heejin Jin
- Institute of Health and Environment, Seoul National University, Seoul,
Korea
| | - Sungho Won
- Department of Public Health Science, Seoul National University, Seoul,
Korea
- Institute of Health and Environment, Seoul National University, Seoul,
Korea
- RexSoft, Inc.,
Korea
| | - Do Joon Park
- Department of Internal Medicine, Seoul National University, Seoul,
Korea
| | - Chan Soo Shin
- Department of Internal Medicine, Seoul National University, Seoul,
Korea
| | - Je Hyun Seo
- Veterans Medical Research Institute, Veterans Health Service Medical Center, Seoul,
Korea
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15
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Li X, van Geffen J, van Weele M, Zhang X, He Y, Meng X, Timofeeva M, Campbell H, Dunlop M, Zgaga L, Theodoratou E. An observational and Mendelian randomisation study on vitamin D and COVID-19 risk in UK Biobank. Sci Rep 2021; 11:18262. [PMID: 34521884 PMCID: PMC8440633 DOI: 10.1038/s41598-021-97679-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 08/02/2021] [Indexed: 11/28/2022] Open
Abstract
A growing body of evidence suggests that vitamin D deficiency has been associated with an increased susceptibility to viral and bacterial respiratory infections. In this study, we aimed to examine the association between vitamin D and COVID-19 risk and outcomes. We used logistic regression to identify associations between vitamin D variables and COVID-19 (risk of infection, hospitalisation and death) in 417,342 participants from UK Biobank. We subsequently performed a Mendelian Randomisation (MR) study to look for evidence of a causal effect. In total, 1746 COVID-19 cases (399 deaths) were registered between March and June 2020. We found no significant associations between COVID-19 infection risk and measured 25-OHD levels after adjusted for covariates, but this finding is limited by the fact that the vitamin D levels were measured on average 11 years before the pandemic. Ambient UVB was strongly and inversely associated with COVID-19 hospitalization and death overall and consistently after stratification by BMI and ethnicity. We also observed an interaction that suggested greater protective effect of genetically-predicted vitamin D levels when ambient UVB radiation is stronger. The main MR analysis did not show that genetically-predicted vitamin D levels are causally associated with COVID-19 risk (OR = 0.77, 95% CI 0.55-1.11, P = 0.160), but MR sensitivity analyses indicated a potential causal effect (weighted mode MR: OR = 0.72, 95% CI 0.55-0.95, P = 0.021; weighted median MR: OR = 0.61, 95% CI 0.42-0.92, P = 0.016). Analysis of MR-PRESSO did not find outliers for any instrumental variables and suggested a potential causal effect (OR = 0.80, 95% CI 0.66-0.98, p-val = 0.030). In conclusion, the effect of vitamin D levels on the risk or severity of COVID-19 remains controversial, further studies are needed to validate vitamin D supplementation as a means of protecting against worsened COVID-19.
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Affiliation(s)
- Xue Li
- School of Public Health and the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, Scotland, UK
| | - Jos van Geffen
- Royal Netherlands Meteorological Institute (KNMI), De Bilt, The Netherlands
| | - Michiel van Weele
- Royal Netherlands Meteorological Institute (KNMI), De Bilt, The Netherlands
| | - Xiaomeng Zhang
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, Scotland, UK
| | - Yazhou He
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, Scotland, UK
| | - Xiangrui Meng
- Vanke School of Public Health, Tsinghua University, Beijing, 10084, China
| | - Maria Timofeeva
- Colon Cancer Genetics Group, Cancer Research UK Edinburgh Centre and Medical Research Council Human Genetics Unit, Medical Research Council Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
- DIAS, Danish Institute for Advanced Study, Department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Harry Campbell
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, Scotland, UK
| | - Malcolm Dunlop
- Colon Cancer Genetics Group, Cancer Research UK Edinburgh Centre and Medical Research Council Human Genetics Unit, Medical Research Council Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, UK
| | - Lina Zgaga
- Department of Public Health and Primary Care, Institute of Population Health, Trinity College Dublin, Dublin, Republic of Ireland.
| | - Evropi Theodoratou
- Centre for Global Health, Usher Institute, University of Edinburgh, Edinburgh, Scotland, UK.
- Cancer Research UK Edinburgh Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, Scotland.
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16
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Bejar CA, Goyal S, Afzal S, Mangino M, Zhou A, van der Most PJ, Bao Y, Gupta V, Smart MC, Walia GK, Verweij N, Power C, Prabhakaran D, Singh JR, Mehra NK, Wander GS, Ralhan S, Kinra S, Kumari M, de Borst MH, Hyppönen E, Spector TD, Nordestgaard BG, Blackett PR, Sanghera DK. A Bidirectional Mendelian Randomization Study to evaluate the causal role of reduced blood vitamin D levels with type 2 diabetes risk in South Asians and Europeans. Nutr J 2021; 20:71. [PMID: 34315477 PMCID: PMC8314596 DOI: 10.1186/s12937-021-00725-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 06/28/2021] [Indexed: 12/24/2022] Open
Abstract
Context Multiple observational studies have reported an
inverse relationship between 25-hydroxyvitamin
D concentrations (25(OH)D) and type 2 diabetes (T2D). However, the results of
short- and long-term interventional trials concerning the relationship between 25(OH)D and T2D risk have been
inconsistent. Objectives and methods To evaluate the causal role of reduced blood
25(OH)D in T2D, here we have performed a bidirectional Mendelian randomization
study using 59,890 individuals (5,862 T2D cases and 54,028 controls) from
European and Asian Indian ancestries. We used six known SNPs, including three
T2D SNPs and three vitamin D pathway SNPs, as a genetic instrument to evaluate
the causality and direction of the association between T2D and circulating
25(OH)D concentration. Results Results of the combined meta-analysis of eight
participating studies showed that a composite score of three T2D SNPs would
significantly increase T2D risk by an odds ratio (OR) of 1.24, p = 1.82 × 10–32; Z score 11.86, which, however, had
no significant association with 25(OH)D status (Beta -0.02nmol/L ± SE
0.01nmol/L; p = 0.83; Z score -0.21). Likewise, the genetically
instrumented composite score of 25(OH)D lowering alleles significantly
decreased 25(OH)D concentrations (-2.1nmol/L ± SE 0.1nmol/L,
p = 7.92 × 10–78; Z score -18.68) but was not
associated with increased risk for T2D (OR 1.00, p = 0.12;
Z score 1.54). However, using 25(OH)D synthesis SNP (DHCR7; rs12785878) as an
individual genetic instrument, a per allele reduction of 25(OH)D concentration
(-4.2nmol/L ± SE 0.3nmol/L)
was predicted to increase T2D risk by 5%, p = 0.004;
Z score 2.84. This effect, however, was not seen in other 25(OH)D SNPs (GC
rs2282679, CYP2R1 rs12794714) when used as an individual instrument. Conclusion Our new data on this bidirectional Mendelian
randomization study suggests that genetically instrumented T2D risk does not
cause changes in 25(OH)D levels. However, genetically regulated 25(OH)D
deficiency due to vitamin D synthesis gene (DHCR7) may influence the risk of
T2D. Supplementary Information The online version contains supplementary material available at 10.1186/s12937-021-00725-1.
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Affiliation(s)
- Cynthia A Bejar
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Rm 317 BMSB, OK, 73104, OK City, USA
| | - Shiwali Goyal
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Rm 317 BMSB, OK, 73104, OK City, USA
| | - Shoaib Afzal
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Massimo Mangino
- Department of Twin Research and Genetic Epidemiology, Kings College London, London, SE1 7EH, UK.,NIHR Biomedical Research Centre at Guy's and St Thomas' Foundation Trust, SE1 9RT, London, UK
| | - Ang Zhou
- Australian Center for Precision Health, University of South Australia Cancer Research Institute, Adelaide, Australia
| | - Peter J van der Most
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, NL, The Netherlands
| | - Yanchun Bao
- Department of Mathematical Sciences, University of Essex, Colchester, UK
| | - Vipin Gupta
- Department of Anthropology, University of Delhi, New Delhi, India
| | - Melissa C Smart
- Department of Mathematical Sciences, University of Essex, Colchester, UK
| | | | - Niek Verweij
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Christine Power
- Population, Policy and Practice, Institute of Child Health, University College London, London, WC1N 1EH, UK
| | | | - Jai Rup Singh
- Department of Human Genetics, Central University of Punjab, Bathinda, Punjab, India
| | - Narinder K Mehra
- Department of Transplant Immunology and Immunogenetics, All India Institute of Medical Sciences and Research, New Delhi, India
| | | | - Sarju Ralhan
- Department of Cardiology, Hero DMC Heart Institute, Ludhiana, India
| | - Sanjay Kinra
- Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK
| | - Meena Kumari
- Department of Mathematical Sciences, University of Essex, Colchester, UK
| | - Martin H de Borst
- Department of Internal Medicine, Division of Nephrology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Elina Hyppönen
- Australian Center for Precision Health, University of South Australia Cancer Research Institute, Adelaide, Australia.,Population, Policy and Practice, Institute of Child Health, University College London, London, WC1N 1EH, UK.,Australian Centre for Precision Health, South Australian Health and Medical Research Institute, Adelaide, Australia
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, Kings College London, London, SE1 7EH, UK
| | - Børge G Nordestgaard
- Department of Clinical Biochemistry, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,The Copenhagen General Population Study, Herlev and Gentofte Hospital, Copenhagen University Hospital, Herlev, Denmark.,Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Piers R Blackett
- Department of Pediatrics, Section of Pediatric Endocrinology, College of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.,Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Dharambir K Sanghera
- Department of Pediatrics, Section of Genetics, College of Medicine, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd., Rm 317 BMSB, OK, 73104, OK City, USA. .,Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA. .,Department of Pharmaceutical Sciences, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA. .,Department of Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA. .,Oklahoma Center for Neuroscience, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
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17
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18
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McLean RR, Samelson EJ, Lorbergs AL, Broe KE, Hannan MT, Boyd SK, Bouxsein ML, Kiel DP. Higher Hand Grip Strength Is Associated With Greater Radius Bone Size and Strength in Older Men and Women: The Framingham Osteoporosis Study. JBMR Plus 2021; 5:e10485. [PMID: 33977203 PMCID: PMC8101610 DOI: 10.1002/jbm4.10485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 02/21/2021] [Accepted: 03/02/2021] [Indexed: 12/30/2022] Open
Abstract
Mechanical loading by muscles elicits anabolic responses from bone, thus age‐related declines in muscle strength may contribute to bone fragility in older adults. We used high‐resolution peripheral quantitative computed tomography (HR‐pQCT) to determine the association between grip strength and distal radius bone density, size, morphology, and microarchitecture, as well as bone strength estimated by micro–finite element analysis (μFEA), among older men and women. Participants included 508 men and 651 women participating in the Framingham Offspring Study with grip strength measured in 2011–2014 and HR‐pQCT scanning in 2012–2015. Separately for men and women, analysis of covariance was used to compare HR‐pQCT measures among grip strength quartiles and to test for linear trends, adjusting for age, height, weight, smoking, and physical activity. Mean age was 70 years (range, 50–95 years), and men had higher mean grip strength than the women (37 kg vs. 21 kg). Bone strength estimated by μFEA‐calculated failure load was higher with greater grip strength in both men (p < 0.01) and women (p = 0.04). Higher grip strength was associated with larger cross‐sectional area in both men and women (p < 0.01), with differences in area of 6% and 11% between the lowest to highest grip strength quartiles in men and women, respectively. Cortical thickness was positively associated with grip strength among men only (p = 0.03). Grip strength was not associated with volumetric BMD (vBMD) in men. Conversely, there was a trend for lower total vBMD with higher grip strength among women (p = 0.02), though pairwise comparisons did not reveal any statistically significant differences in total vBMD among grip strength quartiles. Bone microarchitecture (cortical porosity, trabecular thickness, trabecular number) was not associated with grip strength in either men or women. Our findings suggest that the positive association between hand grip strength and distal radius bone strength may be driven primarily by bone size. © 2021 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Robert R McLean
- Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife Boston Massachusetts USA.,CorEvitas, LLC Waltham Massachusetts USA
| | - Elizabeth J Samelson
- Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife Boston Massachusetts USA.,Department of Medicine Beth Israel Deaconess Medical Center and Harvard Medical School Boston Massachusetts USA
| | | | | | - Marian T Hannan
- Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife Boston Massachusetts USA.,Department of Medicine Beth Israel Deaconess Medical Center and Harvard Medical School Boston Massachusetts USA
| | - Steven K Boyd
- McCaig Institute for Bone and Joint Health, Cumming School of Medicine, University of Calgary Calgary Alberta Canada
| | - Mary L Bouxsein
- Center for Advanced Orthopaedic Studies, Beth Israel Deaconess Medical Center Boston Massachusetts USA.,Department of Orthopedic Surgery Harvard Medical School Boston Massachusetts USA
| | - Douglas P Kiel
- Hinda and Arthur Marcus Institute for Aging Research, Hebrew SeniorLife Boston Massachusetts USA.,Department of Medicine Beth Israel Deaconess Medical Center and Harvard Medical School Boston Massachusetts USA
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19
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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] [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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20
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Wu J, Shao B, Xin X, Luo W, Mo M, Jiang W, Si S, Wang S, Shen Y, Yu Y. Association of vitamin D pathway gene polymorphisms with vitamin D level during pregnancy was modified by season and vitamin D supplement. Clin Nutr 2021; 40:3650-3660. [PMID: 33423808 DOI: 10.1016/j.clnu.2020.12.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 11/05/2020] [Accepted: 12/21/2020] [Indexed: 01/08/2023]
Abstract
BACKGROUND & AIMS This study aims to explore the associations of vitamin D (VD) metabolic pathway gene with 25(OH)D level in pregnant women and the interactions of SNP with season and VD supplement. METHODS A total of 2658 pregnant women were selected from Zhoushan Pregnant Women Cohort study. Gestational 25(OH)D level and single nucleotide polymorphism (SNP) of VD metabolic pathway gene were detected. Multilinear regression models were used to estimate associations of SNPs with gestational 25(OH)D levels. Stratified analyses were performed to test the interactions of SNP with season and VD supplements. RESULTS The mutations of rs2298849 and rs7041 on the GC gene were respectively associated with higher 25(OH)D in the first and third trimester; the mutations of seven SNPs (rs1155563, rs16846876, rs17467825, rs2282679, rs2298850, rs3755967, and rs4588) on the GC gene were respectively associated with lower 25(OH)D both in the first and third trimester, and lower changes in 25(OH)D during late pregnancy. The mutations of above seven SNPs, except for rs1155563, were also respectively associated with lower 25(OH)D in the second trimester, but to a lesser extent; Besides, pregnant women with mutation on CYP24A1-rs2209314 had a higher increment in 25(OH)D than their counterparts in the second trimester. The increasing dose effect of Gc isoform on 25(OH)D was observed. The associations of GC and LRP2 genes with 25(OH)D modified by season and VD supplements. CONCLUSIONS The polymorphisms of VD metabolic pathway gene were associated with gestational 25(OH)D, and the associations differ by seasons and VD supplements. Gc isoform exerted a profound influence on gestational 25(OH)D.
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Affiliation(s)
- Jinhua Wu
- Zhoushan Maternal and Child Care Hospital, Zhoushan, China
| | - Bule Shao
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China; Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, China; Department of Gastroenterology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xing Xin
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China; Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, China
| | - Wenliang Luo
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China; Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, China
| | - Minjia Mo
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China; Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, China
| | - Wen Jiang
- Zhoushan Maternal and Child Care Hospital, Zhoushan, China
| | - Shuting Si
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China; Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, China
| | - Shuojia Wang
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China; Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yu Shen
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China; Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, China
| | - Yunxian Yu
- Department of Public Health, and Department of Anesthesiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, China; Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine, Zhejiang University, Hangzhou, China.
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21
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Weckmann M, Thiele D, Liboschik L, Bahmer T, Pech M, Dittrich AM, Fuchs O, Happle C, Schaub B, Ricklefs I, Rabe KF, von Mutius E, Hansen G, König IR, Kopp MV. Cytokine levels in children and adults with wheezing and asthma show specific patterns of variability over time. Clin Exp Immunol 2020; 204:152-164. [PMID: 33202033 DOI: 10.1111/cei.13550] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 11/30/2022] Open
Abstract
Levels of cytokines are used for in-depth characterization of patients with asthma; however, the variability over time might be a critical confounder. To analyze the course of serum cytokines in children, adolescents and adults with asthma and in healthy controls and to propose statistical methods to control for seasonal effects. Of 532 screened subjects, 514 (91·5%) were included in the All Age Asthma Cohort (ALLIANCE). The cohort included 279 children with either recurrent wheezing bronchitis (more than two episodes) or doctor-diagnosed asthma, 75 healthy controls, 150 adult asthmatics and 31 adult healthy controls. Blood samples were collected and 25 μl serum was used for analysis with the Bio-Plex Pr human cytokine 27-Plex assay. Mean age, body mass index and gender in the three groups of wheezers, asthmatic children and adult asthmatics were comparable to healthy controls. Wheezers (34·5%), asthmatic children (78·7%) and adult asthmatics (62·8%) were significantly more often sensitized compared to controls (4·5, 22 and 22·6%, respectively). Considering the entire cohort, interleukin (IL)-1ra, IL-4, IL-9, IL-17, macrophage inflammatory protein (MIP)-1- α and tumor necrosis factor (TNF)- α showed seasonal variability, whereas IL-1β, IL-7, IL-8, IL-13, eotaxin, granulocyte colony-stimulating factor (G-CSF), interferon gamma-induced protein (IP)-10, MIP-1 β and platelet-derived growth factor (PDGF)-BB did not. Significant differences between wheezers/asthmatics and healthy controls were observed for IL-17 and PDGF-BB, which remained stable after adjustment for the seasonality of IL-17. Seasonality has a significant impact on serum cytokine levels in patients with asthma. Because endotyping has achieved clinical importance to guide individualized patient-tailored therapy, it is important to account for seasonal effects.
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Affiliation(s)
- M Weckmann
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany.,Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany
| | - D Thiele
- Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany.,Institut für Medizinische Biometrie und Statistik, Universität zu Lübeck, Lübeck, Germany
| | - L Liboschik
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany.,Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany
| | - T Bahmer
- Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany.,Departement for Internal Medicine I, Pneumology, University Medical Center Schleswig-Holstein, Kiel, Germany.,Department of Pneumology, Lungen Clinic Grosshansdorf, Großhansdorf, Germany
| | - M Pech
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany.,Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany
| | - A-M Dittrich
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hannover, Germany.,Member of the German Center of Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Lübeck, Germany
| | - O Fuchs
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany.,Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany.,Division of Respiratory Medicine, Department of Pediatrics, Inselspital, University of Bern, Bern, Switzerland
| | - C Happle
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hannover, Germany.,Member of the German Center of Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Lübeck, Germany
| | - B Schaub
- Department of Pediatrics, Department of Allergology, Dr von Hauner Children's Hospital University Hospital, LMU Munich, Munich, Germany.,Member of the German Center of Lung Research (DZL), Comprehensive Pneumology Center München (CPC-M), Lübeck, Germany
| | - I Ricklefs
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany.,Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany
| | - K F Rabe
- Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany.,Departement for Internal Medicine I, Pneumology, University Medical Center Schleswig-Holstein, Kiel, Germany
| | - E von Mutius
- Department of Pediatrics, Department of Allergology, Dr von Hauner Children's Hospital University Hospital, LMU Munich, Munich, Germany.,Member of the German Center of Lung Research (DZL), Comprehensive Pneumology Center München (CPC-M), Lübeck, Germany
| | - G Hansen
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, Hannover, Germany.,Member of the German Center of Lung Research (DZL), Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Lübeck, Germany
| | - I R König
- Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany.,Institut für Medizinische Biometrie und Statistik, Universität zu Lübeck, Lübeck, Germany
| | - M V Kopp
- Department of Pediatric Pneumology and Allergology, University Medical Center Schleswig-Holstein, Lübeck, Germany.,Member of the German Center of Lung Research (DZL), Airway Research Center North (ARCN), Lübeck, Germany.,Division of Respiratory Medicine, Department of Pediatrics, Inselspital, University of Bern, Bern, Switzerland
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22
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Harishankar M, Sampath P, Athikesavan V, Chinnaiyan P, Velayutham B, Putcha UK, Tripathy SP, Ranganathan UD, Selvaraj P, Bethunaickan R. Association of rs7041 and rs4588 polymorphisms of vitamin D binding protein gene in pulmonary tuberculosis. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
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23
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Fontanive TO, Dick NRM, Valente MCS, Laranjeira VDS, Antunes MV, Corrêa MDP, Alves RDCM, Linden R, Furlanetto TW. Seasonal variation of vitamin D among healthy adult men in a subtropical region. Rev Assoc Med Bras (1992) 2020; 66:1431-1436. [DOI: 10.1590/1806-9282.66.10.1431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 05/23/2020] [Indexed: 11/21/2022] Open
Abstract
SUMMARY OBJECTIVE: To evaluate seasonal variation of 25(OH)vitamin D [25(OH)D3] levels, and factors associated with it, in healthy adult men, who exercised outdoors for 50 min., at least twice a week, from 10AM to 4PM, in a Brazilian semitropical region. METHODS: Blood samples were collected at the end of each season for 25(OH)D3, measured by liquid chromatography with tandem mass spectrometry. Ultraviolet irradiation was estimated by radiometer, calculating the daily photobiological response to vitamin D synthesis in human skin (D-VitD). The prevalence of 25(OH)D3 <20ng/mL changed with the seasons (p=0.000): 8.7% (n=6/69), 1.5% (n=1/66), 0 (n=0/64), and 21.7% (n=13/60), respectively, at the end of winter, spring, summer, and autumn. The prevalence, adjusted for multiple comparisons, was higher in winter than summer (p=0.026), and in autumn than spring (p=0.001) and summer (p=0.000). There were no associations of 25(OH) D3 levels with BMI (p=0.207), body fat (p=0.064), and phototype (p=0.485), in univariate analysis. It was associated with D-VitD in the 30 days before blood sampling (p=0.000), after adjustment to body fat. The prevalence of 25(OH)D3 <30ng/mL varied seasonally (p=0.000): 69.6% (n=48/69), 68.2% (n=45/66), 43.8% (n=28/64), and 88.4% (n=53/60), respectively, in winter, spring, summer, and autumn. CONCLUSIONS: In a Brazilian subtropical region, a seasonal variation in 25(OH)D3 was observed in healthy adult males, although they spent at least 50 min outdoors twice a week, wearing shorts and T-shirts. 25(OH)D3 <20ng/mL was 21.7% in autumn; D-vitD 30 days prior to blood sampling was the only factor independently associated with 25(OH)D3 levels.
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24
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Revez JA, Lin T, Qiao Z, Xue A, Holtz Y, Zhu Z, Zeng J, Wang H, Sidorenko J, Kemper KE, Vinkhuyzen AAE, Frater J, Eyles D, Burne THJ, Mitchell B, Martin NG, Zhu G, Visscher PM, Yang J, Wray NR, McGrath JJ. Genome-wide association study identifies 143 loci associated with 25 hydroxyvitamin D concentration. Nat Commun 2020; 11:1647. [PMID: 32242144 PMCID: PMC7118120 DOI: 10.1038/s41467-020-15421-7] [Citation(s) in RCA: 185] [Impact Index Per Article: 46.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/03/2020] [Indexed: 02/07/2023] Open
Abstract
Vitamin D deficiency is a candidate risk factor for a range of adverse health outcomes. In a genome-wide association study of 25 hydroxyvitamin D (25OHD) concentration in 417,580 Europeans we identify 143 independent loci in 112 1-Mb regions, providing insights into the physiology of vitamin D and implicating genes involved in lipid and lipoprotein metabolism, dermal tissue properties, and the sulphonation and glucuronidation of 25OHD. Mendelian randomization models find no robust evidence that 25OHD concentration has causal effects on candidate phenotypes (e.g. BMI, psychiatric disorders), but many phenotypes have (direct or indirect) causal effects on 25OHD concentration, clarifying the epidemiological relationship between 25OHD status and the health outcomes examined in this study.
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Affiliation(s)
- Joana A Revez
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Tian Lin
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Zhen Qiao
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Angli Xue
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Yan Holtz
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Zhihong Zhu
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Jian Zeng
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Huanwei Wang
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Julia Sidorenko
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Kathryn E Kemper
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Anna A E Vinkhuyzen
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Julanne Frater
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
| | - Darryl Eyles
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Wacol, QLD, Australia
| | - Thomas H J Burne
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Wacol, QLD, Australia
| | - Brittany Mitchell
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
- School of Biomedical Sciences, Faculty of Health, and Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | | | - Gu Zhu
- QIMR Berghofer Medical Research Institute, Brisbane, QLD, Australia
| | - Peter M Visscher
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
| | - Jian Yang
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
- Institute for Advanced Research, Wenzhou Medical University, Wenzhou, Zhejiang, 325027, China
| | - Naomi R Wray
- Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia.
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia.
| | - John J McGrath
- Queensland Brain Institute, The University of Queensland, Brisbane, QLD, Australia.
- Queensland Centre for Mental Health Research, The Park Centre for Mental Health, Wacol, QLD, Australia.
- National Centre for Register-based Research, Aarhus University, Aarhus, Denmark.
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25
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Traglia M, Windham GC, Pearl M, Poon V, Eyles D, Jones KL, Lyall K, Kharrazi M, Croen LA, Weiss LA. Genetic Contributions to Maternal and Neonatal Vitamin D Levels. Genetics 2020; 214:1091-1102. [PMID: 32047095 PMCID: PMC7153928 DOI: 10.1534/genetics.119.302792] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 02/05/2020] [Indexed: 02/08/2023] Open
Abstract
Vitamin D is essential for several physiological functions and biological processes. Increasing levels of maternal vitamin D are required throughout pregnancy as a unique source of vitamin D for the fetus, and consequently maternal vitamin D deficiency may result in several adverse outcomes in newborns. However, the genetic regulation of vitamin D in pregnancy and at birth is not yet well understood. We performed genome-wide association studies of maternal midgestational serum-derived and neonatal blood-spot-derived total 25-hydroxyvitamin D from a case-control study of autism spectrum disorder (ASD). We identified one fetal locus (rs4588) significantly associated with neonatal vitamin D levels in the GC gene, encoding the binding protein for the transport and function of vitamin D. We also found suggestive cross-associated loci for neonatal and maternal vitamin D near immune genes, such as CXCL6-IL8 and ACKR1 We found no interactions with ASD. However, when including a set of cases with intellectual disability but not ASD (N = 179), we observed a suggestive interaction between decreased levels of neonatal vitamin D and a specific maternal genotype near the PKN2 gene. Our results suggest that genetic variation influences total vitamin D levels during pregnancy and at birth via proteins in the vitamin D pathway, but also potentially via distinct mechanisms involving loci with known roles in immune function that might be involved in vitamin D pathophysiology in pregnancy.
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Affiliation(s)
- Michela Traglia
- Department of Psychiatry, Institute for Human Genetics, University of California, San Francisco, California 94143
| | - Gayle C Windham
- California Department of Public Health, Environmental Health Investigations Branch, Richmond, California 94804
| | - Michelle Pearl
- California Department of Public Health, Environmental Health Investigations Branch, Richmond, California 94804
| | - Victor Poon
- Sequoia Foundation, La Jolla, California 92037
| | - Darryl Eyles
- Queensland Brain Institute, University of Queensland, Brisbane, 4072, Australia
| | - Karen L Jones
- Division of Rheumatology, Allergy and Clinical Immunology, University of California, Davis, California 95616
| | - Kristen Lyall
- A.J. Drexel Autism Institute, Drexel University, Philadelphia, Pennsylvania 191044
| | - Martin Kharrazi
- California Department of Public Health, Environmental Health Investigations Branch, Richmond, California 94804
| | - Lisa A Croen
- Autism Research Program, Division of Research, Kaiser Permanente, Oakland, California 94612
| | - Lauren A Weiss
- Department of Psychiatry, Institute for Human Genetics, University of California, San Francisco, California 94143
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26
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Manousaki D, Mitchell R, Dudding T, Haworth S, Harroud A, Forgetta V, Shah RL, Luan J, Langenberg C, Timpson NJ, Richards JB. Genome-wide Association Study for Vitamin D Levels Reveals 69 Independent Loci. Am J Hum Genet 2020; 106:327-337. [PMID: 32059762 PMCID: PMC7058824 DOI: 10.1016/j.ajhg.2020.01.017] [Citation(s) in RCA: 123] [Impact Index Per Article: 30.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 01/22/2020] [Indexed: 12/13/2022] Open
Abstract
We aimed to increase our understanding of the genetic determinants of vitamin D levels by undertaking a large-scale genome-wide association study (GWAS) of serum 25 hydroxyvitamin D (25OHD). To do so, we used imputed genotypes from 401,460 white British UK Biobank participants with available 25OHD levels, retaining single-nucleotide polymorphisms (SNPs) with minor allele frequency (MAF) > 0.1% and imputation quality score > 0.3. We performed a linear mixed model GWAS on standardized log-transformed 25OHD, adjusting for age, sex, season of measurement, and vitamin D supplementation. These results were combined with those from a previous GWAS including 42,274 Europeans. In silico functional follow-up of the GWAS results was undertaken to identify enrichment in gene sets, pathways, and expression in tissues, and to investigate the partitioned heritability of 25OHD and its shared heritability with other traits. Using this approach, the SNP heritability of 25OHD was estimated to 16.1%. 138 conditionally independent SNPs were detected (p value < 6.6 × 10-9) among which 53 had MAF < 5%. Single variant association signals mapped to 69 distinct loci, among which 63 were previously unreported. We identified enrichment in hepatic and lipid metabolism gene pathways and enriched expression of the 25OHD genes in liver, skin, and gastrointestinal tissues. We observed partially shared heritability between 25OHD and socio-economic traits, a feature which may be mediated through time spent outdoors. Therefore, through a large 25OHD GWAS, we identified 63 loci that underline the contribution of genes outside the vitamin D canonical metabolic pathway to the genetic architecture of 25OHD.
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Affiliation(s)
- Despoina Manousaki
- Department of Human Genetics, McGill University, Montreal, QC H3A 1B1, Canada; Centre for Clinical Epidemiology, Department of Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC H3T 1E2, Canada
| | - Ruth Mitchell
- MRC Integrative Epidemiology Unit, Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK
| | - Tom Dudding
- MRC Integrative Epidemiology Unit, Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK; Bristol Dental School, University of Bristol, Bristol BS8 2BN, UK
| | - Simon Haworth
- MRC Integrative Epidemiology Unit, Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK; Bristol Dental School, University of Bristol, Bristol BS8 2BN, UK
| | - Adil Harroud
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
| | - Vincenzo Forgetta
- Centre for Clinical Epidemiology, Department of Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC H3T 1E2, Canada
| | - Rupal L Shah
- MRC Epidemiology Unit, University of Cambridge, Cambridge CB2 0SL, UK
| | - Jian'an Luan
- MRC Epidemiology Unit, University of Cambridge, Cambridge CB2 0SL, UK
| | | | - Nicholas J Timpson
- MRC Integrative Epidemiology Unit, Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol BS8 2BN, UK
| | - J Brent Richards
- Department of Human Genetics, McGill University, Montreal, QC H3A 1B1, Canada; Centre for Clinical Epidemiology, Department of Epidemiology, Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, QC H3T 1E2, Canada; Department of Medicine, McGill University Montreal, QC H3G 1Y6, Canada; Department of Epidemiology, Biostatistics and Occupational Health, McGill University, Montreal, QC H3A 1A2, Canada; Department of Twin Research and Genetic Epidemiology, King's College London, London WC2R 2LS, UK.
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Du Y, Li P, Wen Y, Liang X, Liu L, Cheng B, Ding M, Zhao Y, Ma M, Zhang L, Cheng S, Guo X, Zhang F. Evaluating the Correlations Between Osteoporosis and Lifestyle-Related Factors Using Transcriptome-Wide Association Study. Calcif Tissue Int 2020; 106:256-263. [PMID: 31832726 DOI: 10.1007/s00223-019-00640-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 11/22/2019] [Indexed: 02/06/2023]
Abstract
Osteoporosis (OP) is a multi-factorial bone disease influenced by genetic factors, age, and lifestyles. The aim of this study is to evaluate the genetic correlations between OP and multiple lifestyle-related factors, and explore the genes underlying the detected genetic correlations. Linkage disequilibrium score regression (LDSC) analysis was applied to evaluate the genetic correlations of total body bone mineral density (TB-BMD) of different ages (including 15-30 years, 30-45 years, 45-60 years, and over 60 years) with four common lifestyle/environment-related factors (including serum 25-hydroxyvitamin D, cigarette smoking, alcohol dependence, and caffeine metabolites). Transcriptome-wide association studies (TWAS) of TB-BMD (30-45 years) and smoking were conducted in peripheral blood (PB), whole blood (WB), and adipose tissues. The identified candidate genes were also subjected to gene set enrichment analysis (GSEA). Genetic correlation was only observed between TB-BMD (30-45 years) and cigarette smoking status (P = 0.01, LD score = 0.11 ± 0.04). No significant genetic correlation was detected for other lifestyle/environmental factors, including serum 25-hydroxyvitamin D, alcohol dependence, and caffeine metabolites for TB-BMD within all of the four age groups. TWAS identified 85 genes in PB and 163 genes in WB for TB-BMD, as well as 123 genes in PB and 257 genes in WB for smoking. Multiple common candidate genes shared by both TB-BMD and smoking were detected, such as MAP1LC3B (PTB-BMD-PB = 1.00 × 10-3, Psmoking-PB = 9.62 × 10-3, PTB-BMD-WB = 2.99 × 10-2) and SLC23A3 (PTB-BMD-WB = 1.48 × 10-2, Psmoking-WB = 8.76 × 10-3). GSEA detected one GO terms for TB-BMD (cytosol) in WB, one GO term for smoking (mitochondrion) in PB, and one pathway (oocyte meiosis) for smoking in WB.
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Affiliation(s)
- Yanan Du
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Ping Li
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Yan Wen
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China.
| | - Xiao Liang
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Li Liu
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Bolun Cheng
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Miao Ding
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Yan Zhao
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Mei Ma
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Lu Zhang
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Shiqiang Cheng
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Xiong Guo
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China
| | - Feng Zhang
- Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, School of Public Health, Health Science Center, Xi'an Jiaotong University, No. 76 Yan Ta West Road, Xi'an, 710061, People's Republic of China.
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Trummer O, Schweighofer N, Haudum CW, Trummer C, Pilz S, Theiler-Schwetz V, Keppel MH, Grübler M, Pieber TR, Renner W, Obermayer-Pietsch B, Lerchbaum E. Genetic Components of 25-Hydroxyvitamin D Increase in Three Randomized Controlled Trials. J Clin Med 2020; 9:jcm9020570. [PMID: 32093012 PMCID: PMC7074051 DOI: 10.3390/jcm9020570] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/11/2020] [Accepted: 02/14/2020] [Indexed: 12/30/2022] Open
Abstract
The 25-Hydroxyvitamin D (25[OH)D) serum concentration depends on vitamin D intake, endogenous vitamin D production and genetic factors. The latter have been demonstrated in large genome-wide association studies indicating that single nucleotide polymorphisms (SNPs) in genes related to the vitamin D metabolism are as important for serum 25(OH)D levels as the influence of season. The mechanism on how these SNPs influence serum 25(OH)D levels are still unclear. The aim of the present study was to investigate the genetic effects of ten selected SNPs related to vitamin D metabolism on 25-hydroxyvitamin D increase (∆25(OH)D) after vitamin D supplementation in three randomized controlled trials. Genotypes of SNPs related to vitamin D metabolism were determined in 411 participants with 25(OH)D concentrations < 75 nmol/l receiving 20,000 IU cholecalciferol per week for 8 or 12 weeks after study inclusion. For the vitamin D receptor (VDR) rs10783219 polymorphism, the minor A-allele was associated with lower ∆25(OH)D values in the entire study population (p = 0.022), which was not consistent in all three cohorts when analysed separately. VDR rs10783219 might therefore be a genetic modulator of increasing 25-hydroxyvitamin D concentrations. Considering the wide-spread use of vitamin D supplementation, future large and well-designed randomized controlled trials (RCTs) should investigate the clinical impact of this polymorphism.
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Affiliation(s)
- Olivia Trummer
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
- Correspondence: ; Tel.: +43-316-385-72935
| | - Natascha Schweighofer
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
- Center for Biomarker Research in Medicine, CBmed, 8010 Graz, Austria
| | - Christoph W. Haudum
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
- Center for Biomarker Research in Medicine, CBmed, 8010 Graz, Austria
| | - Christian Trummer
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
| | - Stefan Pilz
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
| | - Verena Theiler-Schwetz
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
| | - Martin H. Keppel
- Department of Laboratory Medicine, Paracelsus Medical University Salzburg, 5020 Salzburg, Austria;
| | - Martin Grübler
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
| | - Thomas R. Pieber
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
- Center for Biomarker Research in Medicine, CBmed, 8010 Graz, Austria
| | - Wilfried Renner
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, 8036 Graz, Austria;
| | - Barbara Obermayer-Pietsch
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
| | - Elisabeth Lerchbaum
- Division of Endocrinology and Diabetology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria; (N.S.); (C.W.H.); (C.T.); (S.P.); (V.T.-S.); (M.G.); (T.R.P.); (B.O.-P.); (E.L.)
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Effect of genetic factors on the response to vitamin D 3 supplementation in the VIDARIS randomized controlled trial. Nutrition 2020; 75-76:110761. [PMID: 32289634 DOI: 10.1016/j.nut.2020.110761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/09/2019] [Accepted: 12/18/2019] [Indexed: 02/08/2023]
Abstract
OBJECTIVES Supplementation provides the best means of improving vitamin D status; however, individual responses vary partly owing to genetics. The aim of this study was to determine whether 28 single nucleotide polymorphisms (SNPs) in six key vitamin D pathway genes (GC, DHCR7, CYP2 R1, CYP24 A1, CYP27 B1, VDR) were associated with differences in response to supplementation. METHODS Participants (N = 313; n = 160 vitamin D, n = 153 placebo) were part of VIDARIS (Vitamin D and Acute Respiratory Infections Study), a double-blind, randomized controlled trial involving oral monthly supplementation of either vitamin D3 (200 000 IU each for the first 2 mo, thereafter 100 000 IU monthly) or placebo for 18 mo. Circulating 25-hydroxyvitamin D (25[OH]D) concentrations at baseline and 2, 6, 12, and 18 mo, and vitamin D binding protein (Gc-globulin) and calculated free 25(OH)D concentrations at baseline and 2 mo were obtained. Multiple regression was used to model associations between genetic variants and 25(OH)D, Gc-globulin, and free 25(OH)D concentrations. RESULTS SNPs within GC, CYP2 R1, and CYP27 B1 were associated with 25(OH)D concentrations following supplementation. However, only two GC gene SNPs (rs2282679, rs1155563) were significant after adjustment for multiple testing. This effect disappeared after more than 2 mo of supplementation. None of the SNPs were significantly associated with Gc-globulin concentrations; however, there was a significant interaction with one SNP in DHCR7 (rs12785878), which was associated with reduced free 25(OH)D concentrations in the supplemented arm. CONCLUSION Only variants of GC were associated with 25(OH)D concentrations after supplementation. This effect was modest and disappeared after >2 mo of supplementation, suggesting it may be time/dose-dependent and saturable.
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Abstract
Vitamin D plays an essential role in human health as it influences immune function, cell proliferation, differentiation and apoptosis. Vitamin D deficiency has been associated with numerous health outcomes, including bone disease, cancer, autoimmune disease, cardiovascular conditions and more. However, the causal role of vitamin D beyond its importance for bone health remains unclear and is under much debate. Twin and familial studies from past decades have demonstrated a nontrivial heritability of circulating vitamin D concentrations. Several large-scale genome-wide association studies (GWAS) have discovered associations of GC, NADSYN1/DHCR7, CYP2R1, CYP24A1, SEC23A, AMDHD1 with serum levels of vitamin D. A recent whole genome sequencing (WGS) study, combined with deep imputation of genome-wide genotyping, has identified a low-frequency synonymous coding variant at CYP2R1. Information on these genetic variants can be used as tools for downstream analysis such as Mendelian randomization. Here, we review the genetic determinants of circulating vitamin D levels by focusing on new findings from GWAS and WGS, as well as results from Mendelian randomization analyses conducted so far for vitamin D with various traits and diseases. The amount of variation in vitamin D explained by genetics is still small, and the putative causal relationship between vitamin D and other diseases remains to be demonstrated.
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Affiliation(s)
- Xia Jiang
- Program in Genetic Epidemiology, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Brookline, Boston 02115, USA; Unit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institute, Nobels vagen 13, Stockholm 17177, Sweden.
| | - Douglas P Kiel
- Institute for Aging Research, Hebrew SeniorLife, 1200 Centre Street, Boston, MA 02131, United States; Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02115, United States; Broad Institute of Harvard and Massachusetts Institute of Technology, Boston, MA 02142, United States
| | - Peter Kraft
- Program in Genetic Epidemiology, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Brookline, Boston 02115, USA
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A critical evaluation of results from genome-wide association studies of micronutrient status and their utility in the practice of precision nutrition. Br J Nutr 2019; 122:121-130. [DOI: 10.1017/s0007114519001119] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AbstractRapid advances in ‘omics’ technologies have paved the way forward to an era where more ‘precise’ approaches – ‘precision’ nutrition – which leverage data on genetic variability alongside the traditional indices, have been put forth as the state-of-the-art solution to redress the effects of malnutrition across the life course. We purport that this inference is premature and that it is imperative to first review and critique the existing evidence from large-scale epidemiological findings. We set out to provide a critical evaluation of findings from genome-wide association studies (GWAS) in the roadmap to precision nutrition, focusing on GWAS of micronutrient disposition. We found that a large number of loci associated with biomarkers of micronutrient status have been identified. Mean estimates of heritability of micronutrient status ranged between 20 and 35 % for minerals, 56–59 % for water-soluble and 30–70 % for fat-soluble vitamins. With some exceptions, the majority of the identified genetic variants explained little of the overall variance in status for each micronutrient, ranging between 1·3 and 8 % (minerals), <0·1–12 % (water-soluble) and 1·7–2·3 % for (fat-soluble) vitamins. However, GWAS have provided some novel insight into mechanisms that underpin variability in micronutrient status. Our findings highlight obvious gaps that need to be addressed if the full scope of precision nutrition is ever to be realised, including research aimed at (i) dissecting the genetic basis of micronutrient deficiencies or ‘response’ to intake/supplementation (ii) identifying trans-ethnic and ethnic-specific effects (iii) identifying gene–nutrient interactions for the purpose of unravelling molecular ‘behaviour’ in a range of environmental contexts.
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Half the Genetic Variance in Vitamin D Concentration is Shared with Skin Colour and Sun Exposure Genes. Behav Genet 2019; 49:386-398. [DOI: 10.1007/s10519-019-09954-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 03/01/2019] [Indexed: 01/05/2023]
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Changes in Vitamin D Status in Overweight Middle-Aged Adults with or without Impaired Glucose Metabolism in Two Consecutive Nordic Summers. J Nutr Metab 2019; 2019:1840374. [PMID: 30944737 PMCID: PMC6421780 DOI: 10.1155/2019/1840374] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Accepted: 01/02/2019] [Indexed: 12/31/2022] Open
Abstract
Background Sun exposure is the main driver of vitamin D synthesis. High latitude, obesity, and type 2 diabetes mellitus (T2DM) are all risk factors for vitamin D deficiency. However, the seasonal variation in vitamin D concentrations (25[OH]D) in such populations before and after sun exposure during the summer is unknown. Therefore, we investigated 25[OH]D status before and after two consecutive summers in high latitude and its associations with body fat, sex, and glucose metabolism. Methods 158 participants from Sweden (87 women, 71 men; mean age, 60 ± 5 y; body mass index ≥ 25 kg/m2) and 25[OH]D were measured and evaluated in relation to normal or impaired glucose tolerance, body composition, and dietary habits during summer season. Results Eighty-four percent of the participants were categorized with low to deficient 25[OH]D values before summer (55.1 ± 21.7 nmol·L−1), with a significant increase after the summer season (66.3 ± 21.0 nmol·L−1; P < 0.001). However, the values remained below the recommended range (76–250 nmol·L−1) in 66% of the participants. These findings were verified in a subgroup of the study population during the subsequent summer. Participants who reported use of vitamin D supplements had higher initial concentrations (64.2 ± 20.1 nmol·L−1) compared to nonusers (53.7 ± 21.7 nmol·L−1; P=0.04). Further, 25[OH]D values correlated negatively with fat mass (kg) prior to summer only in the female population (r=−0.29, P=0.008). Conclusions In the present study, sun exposure had a beneficial but insufficient effect on 25[OH]D levels, and the same levels were documented in two consecutive summer seasons, confirming that vitamin D supplementation in both summer and winter should be considered in this population.
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Khayyatzadeh SS, Mehramiz M, Esmaeily H, Mirmousavi SJ, Khajavi L, Salehkhani FN, Hanachi P, Bahrami-Taghanaki H, Eslami S, Vatanparast H, Ferns GA, Avan A, Ghayour-Mobarhan M. A variant in CYP2R1 predicts circulating vitamin D levels after supplementation with high-dose of vitamin D in healthy adolescent girls. J Cell Physiol 2019; 234:13977-13983. [PMID: 30624776 DOI: 10.1002/jcp.28083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 12/07/2018] [Indexed: 01/27/2023]
Abstract
AIM The determinants of serum vitamin D seems to be the environmental factors (dietary and supplementary intake and exposure to ultraviolet light) and genetic factors. We aimed to study the relationship between a vitamin D-associated genetic polymorphism and serum 25(OH)D concentrations in healthy adolescent girls in Iran, and its effects on a high-dose supplement of vitamin D. MATERIAL AND METHOD A total of 616 healthy adolescent girls with mean age 15 received 50,000 IU of vitamin D3 weekly over 9 weeks. Serum vitamin D levels and other metabolic factors were measured at baseline and after the intervention. The genotyping of the CYP2R1 variant (rs10741657) was performed by TaqMan genotyping assays. RESULTS Regardless of the genetic background, at baseline, 87% of adolescent girls were vitamin D deficient (serum 25(OH)D level < 50 nmol/l). High-dose supplementation with VitD reduced the proportion of girls who were deficient substantially to about 24%. The genetic analysis revealed that although at baseline there was not a gene-vitamin D association ( p trend = 0.1), the response to supplementation appeared to be modulated by this variant ( p trend < 0.001). However, other anthropometric and biochemical measures were not affected by this intervention, over this short period. Serum 25(OH)D was increased in all participants although the carriers of the minor A allele seemed to be better responders so that the percentages of the change serum vitamin D in the holder of AA and AG genotypes were 539.4 ± 443.1 and 443.7 ± 384.6, respectively, compared with those with common GG genotype (363.3 ± 354.0). Our regression analysis revealed that the probability of an increase in serum 25(OH)D in a participant with AA genotype was 2.5-fold greater than those with a GG genotype (OR = 2.5 (1.4-4.4); p value = 0.002). CONCLUSION Based on our findings, it appears that the rs10741657 variant of the CYP2R1 gene modulates the response to high-dose of vitamin D supplementation.
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Affiliation(s)
- Sayyed Saeid Khayyatzadeh
- Nutrition and Food Security Research Centre, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Department of Nutrition, Faculty of health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mehrane Mehramiz
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Habibollah Esmaeily
- Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Jamal Mirmousavi
- Community Medicine Department, Medical School, Sabzevar University of Medical Sciences, Sabzevar, Iran
| | - Leila Khajavi
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Parichehr Hanachi
- Department of Biology, Biochemistry Unit, Al Zahra University, Tehran, Iran
| | | | - Saeed Eslami
- Chinese and Complementary Medicine Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hasan Vatanparast
- College of Pharmacy and Nutrition, University of Saskatchewan, Health Sciences E-Wing, Saskatoon, Saskatchewan, Canada
| | - Gordon A Ferns
- Division of Medical Education, Brighton & Sussex Medical School, Brighton, Sussex, UK
| | - Amir Avan
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Modern Sciences and Technologies, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Majid Ghayour-Mobarhan
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Zendehdel A, Arefi M. Molecular evidence of role of vitamin D deficiency in various extraskeletal diseases. J Cell Biochem 2019; 120:8829-8840. [PMID: 30609168 DOI: 10.1002/jcb.28185] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 11/12/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Role of vitamin D is not only limited to skeletal system but various other systems of the body, such as immune system, endocrine system, and cardiopulmonary system. MATERIALS AND METHODS It is supported by the confirmations of systems-wide expression of vitamin D receptor (VDR), endocrinal effect of calcitriol, and its role in immune responses. RESULTS Expression of VDR in various systems, immunoregulatory and hormonal response of vitamin D and deficiency of vitamin D may establish various pathologies in the body. CONCLUSION This review provides molecular evidence of relation of vitamin D with extra skeletal.
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Affiliation(s)
- Abolfazl Zendehdel
- Department of Geriatric Medicine, Ziaeian Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Arefi
- Department of Clinical Toxicology, School of Medicine, Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Choi S, Ko H, Lee K, Sung J, Song YM. Genetic influence on serum 25-hydroxyvitamin D concentration in Korean men: a cross-sectional study. GENES AND NUTRITION 2018; 13:33. [PMID: 30598704 PMCID: PMC6300879 DOI: 10.1186/s12263-018-0621-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Accepted: 11/29/2018] [Indexed: 01/08/2023]
Abstract
Background Hypovitaminosis D is prevalent worldwide. It is more prevalent in Eastern Asia region, including Korea. In addition to various environmental factors that influence serum 25-hydroxyvitamin D (25(OH)D) concentration, genetic influence also plays a significant role based on studies estimating the heritability of 25(OH)D in non-Asian populations. The objective of this study was to determine the genetic influence on serum 25(OH)D concentration in Korean men using the twin and family data. Methods A total of 1126 Korean male adult twins and family members from the Healthy Twin Study with serum 25(OH)D measurement were included in this cross-sectional study. Intraclass correlation coefficients (ICCs) and heritability were calculated by mixed linear regression analysis and quantitative genetic analysis after adjusting for environmental and lifestyle factors. Results Mean (± standard deviation; SD) of serum 25(OH)D concentration was 15.34 ± 6.18 ng/ml. The prevalence of vitamin D insufficiency was 19.8% and that of vitamin D deficiency was 77.9%. After adjusting for age, the highest ICC (0.61) was observed for monozygotic twin pairs while the lowest ICC (0.31) was found for father-son pairs. Age-adjusted heritability was estimated to be 58%. When physical activity, multivitamin intake and season of blood sampling were further considered, the ICC and heritability did not materially change. In the sensitivity analysis after excluding known multivitamin users, age-adjusted heritability was reduced to 44%. Conclusions In our study of Korean male twins and family members, heritability of 25(OH)D was moderately high. This supports the finding that genetic factors have significant influence on vitamin D status. Electronic supplementary material The online version of this article (10.1186/s12263-018-0621-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Songhwa Choi
- 1Department of Family Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Irwon-ro 81, Gangnamgu, Seoul, 06351 135-710 South Korea
| | - Hyeonyoung Ko
- 2Health Screening Center Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, 03181 South Korea
| | - Kayoung Lee
- 3Department of Family Medicine, College of Medicine, Busan Paik Hospital, Inje University, Busan, 47392 South Korea
| | - Joohon Sung
- 4Department of Epidemiology, School of Public Health and Institute of Health Environment, Seoul National University, Seoul, 03080 South Korea
| | - Yun-Mi Song
- 1Department of Family Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Irwon-ro 81, Gangnamgu, Seoul, 06351 135-710 South Korea
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Ziegler TE, Kapoor A, Binkley NC, Rice KS, Rogers J, Jolly CJ, Phillips-Conroy JE. Comparison of vitamin D metabolites in wild and captive baboons. Am J Primatol 2018; 80:e22935. [PMID: 30537386 PMCID: PMC6390488 DOI: 10.1002/ajp.22935] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 10/15/2018] [Accepted: 10/21/2018] [Indexed: 12/29/2022]
Abstract
Vitamin D adequacy is essential for multiple physiologic processes. With limited exposure to sunlight for vitamin D3 synthesis, captive primates are supplemented with vitamin D3 (cholecalciferol). Vitamin D metabolite data from wild primates living indigenously could suggest optimum levels. The purpose of this study was to: 1) to explore whether baboons, a speciose genus whose members have significant exposed skin, coat color variation and wide geographical distribution, mirrors the skin pigmentation-vitamin D relationship found in humans; 2) compare vitamin D metabolite levels in wild and captive members of the same or similar baboon species; and 3) apply a recently developed method currently used in humans for measuring multiple vitamin D metabolites as a panel to explore if/how these metabolites can inform us on vitamin D sufficiency. Serum samples from males of three baboon species in the wild: Papio anubis (olive baboon, dark exposed skin), P. cynocephalus (yellow baboon, brown exposed skin), and P. hamadryas (hamadryas baboon, pink exposed skin), were compared with vitamin D supplemented captive olive baboons with sun exposure. Liquid chromatography/tandem mass spectrometry (LC/MS/MS) measured vitamin D and its main metabolites. Cholecalciferol, 25 hydroxyvitamin D2&3 (25(OH)D2&3 ), and 24,25 dihydroxyvitamin D2&3 (24,25(OH)2 D2&3 ), showed significant differences by species. The levels of cholecalciferol due to supplements in the captive olive baboons did not convert to higher 25(OH)D3 while the wild olive baboons exhibited the lowest levels for both cholecalciferol and 25(OH)D3 . Further metabolic conversion of 25(OH)D3 to 24,25(OH)2 D3 indicated that all baboons had more similar conversion ratios and these were within the same range found for humans that are depicted as having adequate vitamin D levels. This study provided evidence that exposed skin color does influence vitamin D3 levels, with lower levels in darker skinned species, but these differences are eliminated in the downstream metabolite conversion indicating strong regulatory control.
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Affiliation(s)
- Toni E. Ziegler
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, Wisconsin
- Institute of Clinical and Translational Research, University of Wisconsin-Madison, Madison, Wisconsin
| | - Amita Kapoor
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, Wisconsin
- Institute of Clinical and Translational Research, University of Wisconsin-Madison, Madison, Wisconsin
| | - Neil C. Binkley
- Institute of Clinical and Translational Research, University of Wisconsin-Madison, Madison, Wisconsin
- Department of Medicine, University of Wisconsin- Madison, Madison, Wisconsin
| | - Karen S. Rice
- Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, Texas
| | - Jeffrey Rogers
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, Wisconsin
- Human Genome Sequencing Center, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas
| | | | - Jane E. Phillips-Conroy
- Department of Neuroscience, Washington University School of Medicine, Saint Louis, Missouri
- Department of Anthropology, Department of Neuroscience, Washington University, Saint Louis, Missouri
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Vitamin D pathway gene polymorphisms influenced vitamin D level among pregnant women. Clin Nutr 2018; 37:2230-2237. [DOI: 10.1016/j.clnu.2017.10.024] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/23/2017] [Accepted: 10/29/2017] [Indexed: 11/22/2022]
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Lieske JC, Wang X. Heritable traits that contribute to nephrolithiasis. Urolithiasis 2018; 47:5-10. [PMID: 30460525 DOI: 10.1007/s00240-018-1095-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 11/08/2018] [Indexed: 02/07/2023]
Abstract
Urinary stones tend to cluster in families. Of the known risk factors, evidence is strongest for heritability of urinary calcium excretion. Recent studies suggest that other stone risk factors may have heritable components including urinary pH, citrate and magnesium excretion, and circulating vitamin D concentration. Several risk factors assumed purely environmental may also have heritable components, including dietary intake and thirst. Thus, future studies may reveal that genetics plays an even stronger role in urinary stone pathogenesis than previously known.
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Affiliation(s)
- John C Lieske
- Division of Nephrology and Hypertension, Mayo Clinic, 200 First Street SW, Rochester, MN, 55901, USA. .,Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA.
| | - Xiangling Wang
- Genomic Medicine Institute, Department of Nephrology and Hypertension, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
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Variability in genes regulating vitamin D metabolism is associated with vitamin D levels in type 2 diabetes. Oncotarget 2018; 9:34911-34918. [PMID: 30405883 PMCID: PMC6201852 DOI: 10.18632/oncotarget.26178] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 09/17/2018] [Indexed: 12/19/2022] Open
Abstract
Mortality rate is increased in type 2 diabetes (T2D). Low vitamin D levels are associated with increased mortality risk in T2D. In the general population, genetic variants affecting vitamin D metabolism (DHCR7 rs12785878, CYP2R1 rs10741657, GC rs4588) have been associated with serum vitamin D. We studied the association of these variants with serum vitamin D in 2163 patients with T2D from the “Sapienza University Mortality and Morbidity Event Rate (SUMMER) study in diabetes”. Measurements of serum vitamin D were centralised. Genotypes were obtained by Eco™ Real-Time PCR. Data were adjusted for gender, age, BMI, HbA1c, T2D therapy and sampling season. DHCR7 rs12785878 (p = 1 x 10–4) and GC rs4588 (p = 1 x 10–6) but not CYP2R1 rs10741657 (p = 0.31) were significantly associated with vitamin D levels. One unit of a weighted genotype risk score (GRS) was strongly associated with vitamin D levels (p = 1.1 x 10–11) and insufficiency (<30 ng/ml) (OR, 95%CI = 1.28, 1.16–1.41, p = 1.1 x 10–7). In conclusion, DHCR7 rs12785878 and GC rs4588, but not CYP2R1 rs10741657, are significantly associated with vitamin D levels. When the 3 variants were considered together as GRS, a strong association with vitamin D levels and vitamin D insufficiency was observed, thus providing robust evidence that genes involved in vitamin D metabolism modulate serum vitamin D in T2D.
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Abstract
OBJECTIVE Despite effective antiretroviral therapy (HAART) and durable viral suppression, many HIV-infected individuals still do not achieve CD4 cell count (CD4) normalization. Vitamin D has immunoregulatory functions, including inducing the development of T cells and higher levels may improve CD4 rebound. DESIGN Longitudinal study of men from the Multicenter AIDS Cohort Study who virally suppressed following HAART initiation and had pre-HAART and post-HAART 25(OH)D and 1,25(OH)2D measurements and repeated measures of CD4. METHODS CD4 rebound was modeled using a nonlinear mixed effects model. We estimated the adjusted effect (adjusted for pre-HAART antiretroviral exposure, black race, age and CD4 at HAART initiation) of pre-HAART and post-HAART vitamin D metabolite levels on the rate of CD4 increase and final CD4 plateau. RESULTS Among the 263 HIV-infected HAART initiators with pre-HAART vitamin D measurements, a 1-SD higher pre-HAART 25(OH)2D level was associated with a 9% faster rate of rise (P = 0.02) but no gain in final CD4 plateau. In contrast, a 1-SD higher 1,25(OH)2D level was associated with a 43-cell lower final CD4 (P = 0.04). Among 560 men with post-HAART measurements, findings were similar to those for pre-HAART 25(OH)2D with 1-SD higher level associated with faster rate of rise but no improvement in final CD4. CONCLUSION We found no evidence that higher vitamin D metabolite levels pre-HAART or post-HAART are associated with better CD4 outcomes among HIV-infected HAART initiators. However, the value of pre-HAART 1,25(OH)2D levels as an indicator of immune response dysregulation could be further explored.
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Berlanga-Taylor AJ, Plant K, Dahl A, Lau E, Hill M, Sims D, Heger A, Emberson J, Armitage J, Clarke R, Knight JC. Genomic Response to Vitamin D Supplementation in the Setting of a Randomized, Placebo-Controlled Trial. EBioMedicine 2018; 31:133-142. [PMID: 29685792 PMCID: PMC6013786 DOI: 10.1016/j.ebiom.2018.04.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 03/23/2018] [Accepted: 04/06/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Vitamin D deficiency has been associated with multiple diseases, but the causal relevance and underlying processes are not fully understood. Elucidating the mechanisms of action of drug treatments in humans is challenging, but application of functional genomic approaches in randomized trials may afford an opportunity to systematically assess molecular responses. METHODS In the Biochemical Efficacy and Safety Trial of Vitamin D (BEST-D), a double-blind, placebo-controlled, dose-finding, randomized clinical trial, 305 community-dwelling individuals aged over 65 years were randomly allocated to treatment with vitamin D3 4000 IU, 2000 IU or placebo daily for 12 months. Genome-wide genotypes at baseline, and transcriptome and plasma levels of cytokines (IFN-γ, IL-10, IL-8, IL-6 and TNF-α) at baseline and after 12 months, were measured. The trial had >90% power to detect 1.2-fold changes in gene expression. FINDINGS Allocation to vitamin D for 12-months was associated with 2-fold higher plasma levels of 25-hydroxy-vitamin D (25[OH]D, 4000 IU regimen), but had no significant effect on whole-blood gene expression (FDR < 5%) or on plasma levels of cytokines compared with placebo. In pre-specified analysis, rs7041 (intron variant, GC) had a significant effect on circulating levels of 25(OH)D in the low dose, but not in the placebo or high dose vitamin D regimen. A gene expression quantitative trait locus analysis (eQTL) demonstrated evidence of 31,568 cis-eQTLs (unique SNP-probe pairs) among individuals at baseline and 34,254 after supplementation for 12 months (any dose). No significant associations involving vitamin D supplementation response eQTLs were found. INTERPRETATION We performed a comprehensive functional genomics and molecular analysis of vitamin D supplementation in a randomized, placebo-controlled trial. Although this study was limited to mostly Caucasian individuals aged over 65 years, the results differ from many previous studies and do not support a strong effect of vitamin D on long-term transcriptomic changes in blood or on plasma cytokine levels. The trial demonstrates the feasibility of applying functional genomic and genetic approaches in randomized trials to assess molecular and individual level responses. KEY RESULT Supplementation with high-dose vitamin D in older people for 12 months in a randomized, placebo-controlled trial had no significant effect on gene expression or on plasma concentrations of selected cytokines. TRIAL REGISTRATION SRCTN registry (Number 07034656) and the European Clinical Trials Database (EudraCT Number 2011-005763-24).
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Affiliation(s)
- Antonio J Berlanga-Taylor
- Computational Genomics Analysis and Training (CGAT), Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DS, UK; Wellcome Centre for Human Genetics (WHG), Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK; MRC-PHE Centre for Environment and Health, Department of Epidemiology & Biostatistics, School of Public Health, Faculty of Medicine, Imperial College London, St Mary's Campus, Norfolk Place, London W2 1PG, UK
| | - Katharine Plant
- Wellcome Centre for Human Genetics (WHG), Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Andrew Dahl
- Wellcome Centre for Human Genetics (WHG), Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Evelyn Lau
- Wellcome Centre for Human Genetics (WHG), Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK
| | - Michael Hill
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Roosevelt Drive, Oxford OX3 7LF, UK; MRC Population Health Research Unit, Nuffield Department of Population Health, University of Oxford, Roosevelt Drive, Oxford OX3 7LF, UK
| | - David Sims
- Computational Genomics Analysis and Training (CGAT), Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DS, UK
| | - Andreas Heger
- Computational Genomics Analysis and Training (CGAT), Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford OX3 9DS, UK
| | - Jonathan Emberson
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Roosevelt Drive, Oxford OX3 7LF, UK; MRC Population Health Research Unit, Nuffield Department of Population Health, University of Oxford, Roosevelt Drive, Oxford OX3 7LF, UK
| | - Jane Armitage
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Roosevelt Drive, Oxford OX3 7LF, UK
| | - Robert Clarke
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Roosevelt Drive, Oxford OX3 7LF, UK
| | - Julian C Knight
- Wellcome Centre for Human Genetics (WHG), Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7BN, UK.
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Familial clustering of vitamin D deficiency via shared environment: The Korean National Health and Nutrition Examination Survey 2008–2012. Eur J Clin Nutr 2018; 72:1700-1708. [DOI: 10.1038/s41430-018-0157-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 02/23/2018] [Accepted: 02/28/2018] [Indexed: 01/08/2023]
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Jiang X, O'Reilly PF, Aschard H, Hsu YH, Richards JB, Dupuis J, Ingelsson E, Karasik D, Pilz S, Berry D, Kestenbaum B, Zheng J, Luan J, Sofianopoulou E, Streeten EA, Albanes D, Lutsey PL, Yao L, Tang W, Econs MJ, Wallaschofski H, Völzke H, Zhou A, Power C, McCarthy MI, Michos ED, Boerwinkle E, Weinstein SJ, Freedman ND, Huang WY, Van Schoor NM, van der Velde N, Groot LCPGMD, Enneman A, Cupples LA, Booth SL, Vasan RS, Liu CT, Zhou Y, Ripatti S, Ohlsson C, Vandenput L, Lorentzon M, Eriksson JG, Shea MK, Houston DK, Kritchevsky SB, Liu Y, Lohman KK, Ferrucci L, Peacock M, Gieger C, Beekman M, Slagboom E, Deelen J, Heemst DV, Kleber ME, März W, de Boer IH, Wood AC, Rotter JI, Rich SS, Robinson-Cohen C, den Heijer M, Jarvelin MR, Cavadino A, Joshi PK, Wilson JF, Hayward C, Lind L, Michaëlsson K, Trompet S, Zillikens MC, Uitterlinden AG, Rivadeneira F, Broer L, Zgaga L, Campbell H, Theodoratou E, Farrington SM, Timofeeva M, Dunlop MG, Valdes AM, Tikkanen E, Lehtimäki T, Lyytikäinen LP, Kähönen M, Raitakari OT, Mikkilä V, Ikram MA, Sattar N, Jukema JW, Wareham NJ, Langenberg C, Forouhi NG, Gundersen TE, Khaw KT, Butterworth AS, Danesh J, Spector T, Wang TJ, Hyppönen E, Kraft P, Kiel DP. Genome-wide association study in 79,366 European-ancestry individuals informs the genetic architecture of 25-hydroxyvitamin D levels. Nat Commun 2018; 9:260. [PMID: 29343764 PMCID: PMC5772647 DOI: 10.1038/s41467-017-02662-2] [Citation(s) in RCA: 244] [Impact Index Per Article: 40.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 12/15/2017] [Indexed: 12/19/2022] Open
Abstract
Vitamin D is a steroid hormone precursor that is associated with a range of human traits and diseases. Previous GWAS of serum 25-hydroxyvitamin D concentrations have identified four genome-wide significant loci (GC, NADSYN1/DHCR7, CYP2R1, CYP24A1). In this study, we expand the previous SUNLIGHT Consortium GWAS discovery sample size from 16,125 to 79,366 (all European descent). This larger GWAS yields two additional loci harboring genome-wide significant variants (P = 4.7×10-9 at rs8018720 in SEC23A, and P = 1.9×10-14 at rs10745742 in AMDHD1). The overall estimate of heritability of 25-hydroxyvitamin D serum concentrations attributable to GWAS common SNPs is 7.5%, with statistically significant loci explaining 38% of this total. Further investigation identifies signal enrichment in immune and hematopoietic tissues, and clustering with autoimmune diseases in cell-type-specific analysis. Larger studies are required to identify additional common SNPs, and to explore the role of rare or structural variants and gene-gene interactions in the heritability of circulating 25-hydroxyvitamin D levels.
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Affiliation(s)
- Xia Jiang
- Program in Genetic Epidemiology and Statistical Genetics. Department of Epidemiology, Harvard T.H.Chan School of Public Health, 677 Huntington Avenue, Boston, 02115, MA, USA
- Unit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Nobels vagen 13, Stockholm, 17177, Sweden
| | - Paul F O'Reilly
- Department of Social Genetic & Developmental Psychiatry, King's College London, Institute of Psychiatry, De Crespigny Park, London, SE5 8AF, UK
| | - Hugues Aschard
- Program in Genetic Epidemiology and Statistical Genetics. Department of Epidemiology, Harvard T.H.Chan School of Public Health, 677 Huntington Avenue, Boston, 02115, MA, USA
- Centre de Bioinformatique, Biostatistique et Biologie Intégrative (C3BI), Institut Pasteur, Paris, 75724, France
| | - Yi-Hsiang Hsu
- Institute for Aging Research, Hebrew SeniorLife, 1200 Centre Street, Boston, MA, 02131, USA
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02115, USA
- Broad Institute of Harvard and Massachusetts Institute of Technology, Boston, MA, 02142, USA
| | - J Brent Richards
- Departments of Medicine, Human Genetics, Epidemiology and Biostatistics, 3755 Côte Ste-Catherine Road, Suite H-413 Montréal, Québec, H3T 1E2, Canada
| | - Josée Dupuis
- Department of Biostatistics, Boston University School of Public Health, Crosstown Center. 801 Massachusetts Avenue 3rd Floor, Boston, MA, 02118, USA
- Framingham Heart Study, 73 Mt. Wayte Avenue, Framingham, MA, 01702, USA
| | - Erik Ingelsson
- Department of Medicine, Division of Cardiovascular Medicine, Stanford University School of Medicine Stanford, Stanford, CA, 94305, USA
- Department of Medical Sciences, Uppsala University, 751 85, Uppsala, Sweden
| | - David Karasik
- Institute for Aging Research, Hebrew SeniorLife, 1200 Centre Street, Boston, MA, 02131, USA
| | - Stefan Pilz
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Medical University of Graz, Auenbruggerplatz 15, 8036, Graz, Austria
| | - Diane Berry
- Population, Policy and Practice, University College London, Great Ormond Street, Institute of Child Health, London, WC1E 6BT, UK
| | - Bryan Kestenbaum
- Kidney Research Institute, Division of Nephrology, 325 Ninth Avenue, Seattle, WA, 98104, USA
| | - Jusheng Zheng
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK
| | - Jianan Luan
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK
| | - Eleni Sofianopoulou
- Department of Public Health & Primary Care, University of Cambridge, Strangeways Research Laboratory, Wort's Causeway, Cambridge, CB1 8RN, UK
| | - Elizabeth A Streeten
- Genetics and Personalized Medicine Program, University of Maryland School of Medicine, Howard Hall Room 567, Baltimore, MD, 21201, USA
| | - Demetrius Albanes
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, 9609 Medical Center Drive, Bethesda, MD, 20892, USA
| | - Pamela L Lutsey
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, 1300S 2nd Street, Suite 300, Minneapolis, MN, 55454, USA
| | - Lu Yao
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, 1300S 2nd Street, Suite 300, Minneapolis, MN, 55454, USA
| | - Weihong Tang
- Division of Epidemiology & Community Health, School of Public Health, University of Minnesota, 1300S 2nd Street, Suite 300, Minneapolis, MN, 55454, USA
| | - Michael J Econs
- Department of Medicine, Indiana University, Endocrinology, 1120W Michigan Street, Indianapolis, IN, 46202-5124, USA
| | - Henri Wallaschofski
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, 17489, Greifswald, Germany
- DZHK (German Centre for Cardiovascular Research), Partner Site, Greifswald, 13316, Berlin, Germany
| | - Henry Völzke
- DZHK (German Centre for Cardiovascular Research), Partner Site, Greifswald, 13316, Berlin, Germany
- Institut für Community Medicine, SHIP/Klinisch-Epidemiologische Forschung, Universitätsmedizin Greifswald, Walther-Rathenau-Str. 48, 17475, Greifswald, Germany
| | - Ang Zhou
- Centre for Population Health Research, Sansom Institute for Health Research, University of South Australia, Adelaide, 5001, SA, Australia
| | - Chris Power
- Population, Policy and Practice, University College London, Great Ormond Street, Institute of Child Health, London, WC1E 6BT, UK
| | - Mark I McCarthy
- Oxford Centre for Diabetes Endocrinology and Metabolism, University of Oxford, Churchill Hospital, Old Road, Headington, Oxford, OX3 7LJ, UK
- Wellcome Centre for Human Genetics, University of Oxford, Roosevelt Drive, Headington, Oxford, OX3 7BN, UK
- Oxford NIHR Biomedical Research Centre, Churchill Hospital, Old Road, Headington, Oxford, OX3 7LJ, UK
| | - Erin D Michos
- Division of Cardiology, Ciccarone Center for the Prevention of Heart Disease, Johns Hopkins School of Medicine, Baltimore, MD, 21287, USA
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, 21205, USA
| | - Eric Boerwinkle
- Human Genetics Center, University of Texas Health Science Center at Houston, Houston, TX, 77030, USA
| | - Stephanie J Weinstein
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, 9609 Medical Center Drive, Bethesda, MD, 20892, USA
| | - Neal D Freedman
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, 9609 Medical Center Drive, Bethesda, MD, 20892, USA
| | - Wen-Yi Huang
- Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, 9609 Medical Center Drive, Bethesda, MD, 20892, USA
| | - Natasja M Van Schoor
- Department of Epidemiology and Biostatistics, Amsterdam Public Health Research Institute, VU University Medical Center, De Boelelaan 1089a, 1081 HV, Amsterdam, The Netherlands
| | - Nathalie van der Velde
- Erasmus MC Department of Epidemiology, Postbus 2040, 3000CA, Rotterdam, The Netherlands
- AMC, Internal Medicine, Geriatrics Department, PO Box 22700, 1100 DE, Amsterdam, The Netherlands
| | - Lisette C P G M de Groot
- Department of Human Nutrition, Wageningen University, PO-box 17, 6700 AA, Wageningen, The Netherlands
| | - Anke Enneman
- Erasmus MC Department of Epidemiology, Postbus 2040, 3000CA, Rotterdam, The Netherlands
| | - L Adrienne Cupples
- Department of Biostatistics, Boston University School of Public Health, Crosstown Center. 801 Massachusetts Avenue 3rd Floor, Boston, MA, 02118, USA
- Framingham Heart Study, 73 Mt. Wayte Avenue, Framingham, MA, 01702, USA
| | - Sarah L Booth
- Vitamin K Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA
| | | | - Ching-Ti Liu
- Department of Biostatistics, Boston University School of Public Health, Crosstown Center. 801 Massachusetts Avenue 3rd Floor, Boston, MA, 02118, USA
| | - Yanhua Zhou
- Department of Biostatistics, Boston University School of Public Health, Crosstown Center. 801 Massachusetts Avenue 3rd Floor, Boston, MA, 02118, USA
| | - Samuli Ripatti
- Statistical and Translational Genetics, University of Helsinki, Tukholmankatu 8, Building, Biomedicum, Helsinki 2U, Finland
| | - Claes Ohlsson
- Department of Internal Medicine and Clinical Nutrition, University of Gothenburg, Vita Stråket 11, Gothenburg, 41345, Sweden
| | - Liesbeth Vandenput
- Department of Internal Medicine and Clinical Nutrition, University of Gothenburg, Vita Stråket 11, Gothenburg, 41345, Sweden
| | - Mattias Lorentzon
- Department of Geriatric Medicine, University of Gothenburg and Sahlgrenska University Hospital, Mölndal, 43180, Sweden
| | - Johan G Eriksson
- Department of General Practice and Primary Health Care, University of Helsinki and Helsinki University Hospital, University of Helsinki, P.O. Box 20, Tukholmankatu, 8 B 00014, Finland
- Folkhälsan Research Center, University of Helsinki, Helsinki, PO Box 2000014, Finland
| | - M Kyla Shea
- Vitamin K Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, 711 Washington Street, Boston, MA, 02111, USA
| | - Denise K Houston
- Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, 27157, USA
| | - Stephen B Kritchevsky
- Sticht Center for Healthy Aging and Alzheimer's Prevention, Wake Forest School of Medicine, Medical Center Boulevard, Winston-Salem, NC, 27157, USA
| | - Yongmei Liu
- Department of Epidemiology and Prevention, Division of Public Health Sciences, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA
| | - Kurt K Lohman
- Department of Biostatistical Sciences, Division of Public Health Sciences, Wake Forest School of Medicine, Medical Center Blvd, Winston-Salem, NC, 27157, USA
| | - Luigi Ferrucci
- Longitudinal Studies Section, Intramural Research Program of the National Institute on Aging, NIH, Baltimore, MD, 21225, USA
| | - Munro Peacock
- Department of Medicine, Indiana University, Endocrinology, 1120W Michigan Street, Indianapolis, IN, 46202-5124, USA
| | - Christian Gieger
- German Research Center for Environmental Health, Molecular Epidemiology, AME, Ingolstädter Landstr 1, D-85764, Neuherberg, Germany
| | - Marian Beekman
- Molecular Epidemiology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC, Leiden, The Netherlands
| | - Eline Slagboom
- Molecular Epidemiology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC, Leiden, The Netherlands
| | - Joris Deelen
- Molecular Epidemiology, Leiden University Medical Center, Einthovenweg 20, 2333 ZC, Leiden, The Netherlands
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Str. 9b, D-50931, Köln (Cologne), Germany
| | - Diana van Heemst
- Gerontology and Geriatrics, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Marcus E Kleber
- Vth Department of Medicine (Nephrology, Hypertensiology, Rheumatology, Endocrinology, Diabetology), Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer1, 68167, Mannheim, Germany
| | - Winfried März
- Vth Department of Medicine (Nephrology, Hypertensiology, Rheumatology, Endocrinology, Diabetology), Medical Faculty Mannheim, University of Heidelberg, Theodor-Kutzer-Ufer1, 68167, Mannheim, Germany
- Clinical Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Auenbruggerplatz 15, 8036, Graz, Graz, Austria
- SYNLAB Holding Deutschland GmbH, Gubener Straße 39, 86156, Augsburg, Germany
| | - Ian H de Boer
- Division of Nephrology and Kidney Research Institute, University of Washington, 325 ninth Avenue, Washington, DC, 98104, USA
| | - Alexis C Wood
- USDA/ARS Children's Nutrition Research Center, 1100 Bates Avenue, Houston, TX, 77071, USA
| | - Jerome I Rotter
- Institute for Translational Genomics and Population Sciences, Los Angeles Biomedical Research Institute and Department of Pediatrics, Harbor-UCLA Medical Center, Torrance, CA, 90502, USA
| | - Stephen S Rich
- Department of Public Health Sciences, University of Virginia, Charlottesville, VA, 22908, USA
- Center for Public Health Genomics, University of Virginia, Charlottesville, VA, 22908, USA
| | - Cassianne Robinson-Cohen
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, 1161 21st Ave S., Nashville, TN, 37232, USA
| | - Martin den Heijer
- Erasmus MC Department of Internal Medicine, Postbus 2040, 3000CA, Rotterdam, The Netherlands
| | - Marjo-Riitta Jarvelin
- Epidemiology and Biostatistics School of Public Health, Imperial College London, 156 Norfolk Place, St. Mary's Campus, London, UK W2 1PG, UK
- Center for Life Course Health Research, Faculty of Medicine, University of Oulu, 90014, Oulu, Finland
- Biocenter Oulu, University of Oulu, P.O. Box 5000, Aapistie 5A, FI-90014, Finland
- Unit of Primary Care, Oulu University Hospital, Kajaanintie 50, P.O. Box 20, FI-90220 Oulu, 90029 OYS, Finland
| | - Alana Cavadino
- Population, Policy and Practice, University College London, Great Ormond Street, Institute of Child Health, London, WC1E 6BT, UK
- Centre for Environmental and Preventive Medicine, Wolfson Institute of Preventive Medicine, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London, EC1M 6BQ, UK
| | - Peter K Joshi
- Centre for Global Health Research, Usher Institute for Population Health Sciences and Informatics, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG, UK
| | - James F Wilson
- Centre for Global Health Research, Usher Institute for Population Health Sciences and Informatics, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG, UK
- MRC Human Genetics Unit, MRC Institute of Genetics & Molecular Medicine, the University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Caroline Hayward
- MRC Human Genetics Unit, MRC Institute of Genetics & Molecular Medicine, the University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Lars Lind
- Department of Medical Sciences, Uppsala University, 751 85, Uppsala, Sweden
| | - Karl Michaëlsson
- Department of Surgical Sciences, Uppsala University, Dag Hammarskjöldsv 14 B, Uppsala Science Park, 751 85, Uppsala, Sweden
| | - Stella Trompet
- Gerontology and Geriatrics, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, Netherlands
| | - M Carola Zillikens
- Erasmus MC Department of Internal Medicine, Postbus 2040, 3000CA, Rotterdam, The Netherlands
| | - Andre G Uitterlinden
- Erasmus MC Department of Epidemiology, Postbus 2040, 3000CA, Rotterdam, The Netherlands
- Erasmus MC Department of Internal Medicine, Postbus 2040, 3000CA, Rotterdam, The Netherlands
| | - Fernando Rivadeneira
- Erasmus MC Department of Epidemiology, Postbus 2040, 3000CA, Rotterdam, The Netherlands
- Erasmus MC Department of Internal Medicine, Postbus 2040, 3000CA, Rotterdam, The Netherlands
| | - Linda Broer
- Erasmus MC Department of Internal Medicine, Postbus 2040, 3000CA, Rotterdam, The Netherlands
| | - Lina Zgaga
- Department of Public Health and Primary Care, Institute of Population Health, Trinity College Dublin, University of Dublin, Dublin 24, D02 PN40, Ireland
| | - Harry Campbell
- Centre for Global Health Research, Usher Institute for Population Health Sciences and Informatics, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG, UK
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Evropi Theodoratou
- Centre for Global Health Research, Usher Institute for Population Health Sciences and Informatics, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG, UK
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Susan M Farrington
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Maria Timofeeva
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Malcolm G Dunlop
- Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh, EH4 2XU, UK
| | - Ana M Valdes
- The Department of Twin Research & Genetic Epidemiology, King's College London, St Thomas' Campus, Westminster Bridge Road, London, SE1 7EH, UK
- School of Medicine, University of Nottingham, City Hospital, Hucknall Rd, Nottingham, NG5 1PB, UK
| | - Emmi Tikkanen
- FIMM-Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, P.O. Box 20, FI-00014, Finland
| | - Terho Lehtimäki
- Department of Clinical Chemistry, Fimlab Laboratories, Tampere, 33520, Finland
- Department of Clinical Chemistry, Finnish Cardiovascular Research Center Tampere, Faculty of Medicine and Life Sciences, University of Tampere, Tampere, 33014, Finland
| | - Leo-Pekka Lyytikäinen
- Department of Clinical Chemistry, Fimlab Laboratories, Tampere, 33520, Finland
- Department of Clinical Chemistry, Finnish Cardiovascular Research Center Tampere, Faculty of Medicine and Life Sciences, University of Tampere, Tampere, 33014, Finland
| | - Mika Kähönen
- Department of Clinical Physiology, Tampere University Hospital, Tampere, 33521, Finland
- Department of Clinical Physiology, Finnish Cardiovascular Research Center Tampere, Faculty of Medicine and Life Sciences, University of Tampere, Tampere, 33014, Finland
| | - Olli T Raitakari
- Department of Clinical Physiology and Nuclear Medicine, Turku University Hospital, Turku, 20521, Finland
- Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Turku, 20014, Finland
| | - Vera Mikkilä
- Science Adviser at Academy of Finland, Hakaniemenranta 6, PO Box 131, FI-00531, Helsinki, Finland
| | - M Arfan Ikram
- Erasmus MC Department of Epidemiology, Postbus 2040, 3000CA, Rotterdam, The Netherlands
| | - Naveed Sattar
- BHF Glasgow Cardiovascular Research Centre, Faculty of Medicine, University Avenue, Glasgow, G12 8QQ, UK
| | - J Wouter Jukema
- Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - Nicholas J Wareham
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK
| | - Claudia Langenberg
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK
| | - Nita G Forouhi
- MRC Epidemiology Unit, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, CB2 0QQ, UK
| | | | - Kay-Tee Khaw
- Department of Public Health & Primary Care, University of Cambridge, Strangeways Research Laboratory, Wort's Causeway, Cambridge, CB1 8RN, UK
| | - Adam S Butterworth
- Department of Public Health & Primary Care, University of Cambridge, Strangeways Research Laboratory, Wort's Causeway, Cambridge, CB1 8RN, UK
| | - John Danesh
- Department of Public Health & Primary Care, University of Cambridge, Strangeways Research Laboratory, Wort's Causeway, Cambridge, CB1 8RN, UK
- Wellcome Trust Sanger Institute, Wellcome Genome Campus, Hinxton, Cambridge, CB10 1SA, UK
| | - Timothy Spector
- The Department of Twin Research & Genetic Epidemiology, King's College London, St Thomas' Campus, Westminster Bridge Road, London, SE1 7EH, UK
| | - Thomas J Wang
- Division of Cardiovascular Medicine, Vanderbilt Heart and Vascular Institute, 2220 Pierce Avenue 383 Preston Research Building, Nashville, TN, 37232-6300, USA
| | - Elina Hyppönen
- Population, Policy and Practice, University College London, Great Ormond Street, Institute of Child Health, London, WC1E 6BT, UK.
- Centre for Population Health Research, Sansom Institute for Health Research, University of South Australia, Adelaide, 5001, SA, Australia.
| | - Peter Kraft
- Program in Genetic Epidemiology and Statistical Genetics. Department of Epidemiology, Harvard T.H.Chan School of Public Health, 677 Huntington Avenue, Boston, 02115, MA, USA
| | - Douglas P Kiel
- Institute for Aging Research, Hebrew SeniorLife, 1200 Centre Street, Boston, MA, 02131, USA.
- Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, 02115, USA.
- Broad Institute of Harvard and Massachusetts Institute of Technology, Boston, MA, 02142, USA.
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Abstract
Twin studies indicate that genetic factors may explain about 50% of the variation of serum 25-hydroxyvitamin D (25OHD). Polymorphisms of 3 genes, delta-7-sterol-reductase, CYP2R1, and DBP/GC (and maybe CYP24A1) combined, can explain about 5% to 10% of the variation in serum 25OHD. These polymorphisms are found in nearly all populations. The variation in serum 25OHD found in different areas and populations in the world is mainly due to environmental and lifestyle factors, not truly dependent on racial differences. One genetic variant of DBP, (GC2), is associated with a modest (∼10%) decrease in serum DBP and 25OHD concentrations for unexplained reasons.
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Affiliation(s)
- Roger Bouillon
- Clinical and Experimental Endocrinology, KU Leuven, Herestraat 49 ON1 Box 902, Leuven 3000, Belgium.
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46
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A population-based approach to assess the heritability and distribution of renal handling of electrolytes. Kidney Int 2017; 92:1536-1543. [DOI: 10.1016/j.kint.2017.06.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 06/09/2017] [Accepted: 06/15/2017] [Indexed: 12/13/2022]
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47
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Bahrami A, Sadeghnia HR, Tabatabaeizadeh SA, Bahrami-Taghanaki H, Behboodi N, Esmaeili H, Ferns GA, Mobarhan MG, Avan A. Genetic and epigenetic factors influencing vitamin D status. J Cell Physiol 2017; 233:4033-4043. [PMID: 29030989 DOI: 10.1002/jcp.26216] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 10/09/2017] [Indexed: 12/27/2022]
Abstract
The global prevalence of vitamin D deficiency appears to be increasing, and the impact of this on human health is important because of the association of vitamin D insufficiency with increased risk of osteoporosis, cardiovascular disease and some cancers. There are few studies on the genetic factors that can influence vitamin D levels. In particular, the data from twin and family-based studies have reported that circulating vitamin D concentrations are partially determined by genetic factors. Moreover, it has been shown that genetic variants (e.g., mutation) and alteration (e.g., deletion, amplification, inversion) in genes involved in the metabolism, catabolism, transport, or binding of vitamin D to it receptor, might affect vitamin D level. However, the underlying genetic determinants of plasma 25-hydroxyvitamin D3 [25(OH)D] concentrations remain to be elucidated. Furthermore, the association between epigenetic modifications such as DNA methylation and vitamin D level has now been reported in several studies. The aim of current review was to provide an overview of the possible value of loci associated to vitamin D metabolism, catabolism, and transport as well epigenetic modification and environmental factors influencing vitamin D status.
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Affiliation(s)
- Afsane Bahrami
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamid Reza Sadeghnia
- Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran.,Division of Neurocognitive Sciences, Psychiatry and Behavioral Sciences Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed-Amir Tabatabaeizadeh
- Department of Clinical Nutrition, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Hamidreza Bahrami-Taghanaki
- Complementary and Chinese Medicine, Persian and Complementary Medicine Faculty, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Negin Behboodi
- Department of Modern Sciences and Technologies, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Habibollah Esmaeili
- Department of Biostatistics & Epidemiology, School of Health, Management & Social Determinants of Health Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gordon A Ferns
- Division of Medical Education, Brighton & Sussex Medical School, Falmer, Sussex BN1 9PH, Brighton, UK
| | - Majid Ghayour Mobarhan
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir Avan
- Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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48
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Tin A, Zhang L, Estrella MM, Hoofnagle A, Rebholz CM, Brown TT, Palella FJ, Witt MD, Jacobson LP, Kingsley LA, Abraham AG. Vitamin D Status and Kidney Function Decline in HIV-Infected Men: A Longitudinal Study in the Multicenter AIDS Cohort Study. AIDS Res Hum Retroviruses 2017; 33:1140-1148. [PMID: 28756682 DOI: 10.1089/aid.2017.0009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Vitamin D may play an important role in a range of disease processes. In the general population, lower vitamin D levels have been associated with kidney dysfunction. HIV-infected populations have a higher risk of chronic kidney disease. Few studies have examined the link between lower vitamin D levels and kidney function decline among HIV-infected persons. We investigated the associations of serum 25-hydroxyvitamin D [25(OH)D] and 1,25-dihydroxyvitamin D [1,25(OH)2D] with kidney function decline in a cohort of HIV-infected white and black men under highly active antiretroviral therapy treatment in the vitamin D ancillary study of the Multicenter AIDS Cohort Study. The associations of 25(OH)D and 1,25(OH)2D with annual change in estimated glomerular filtration rate (eGFR) were evaluated using linear mixed effects models. This study included 187 whites and 86 blacks with vitamin D measures and eGFR ≥60 ml/min/1.73 m2 at baseline. Over a median follow-up of 8.0 years, lower 25(OH)D levels were significantly associated with faster eGFR decline in whites (adjusted annual change in eGFR, tertile 1: -2.06 ml/min/1.73 m2 vs. tertile 3: -1.23 ml/min/1.73 m2, p trend .03), while no significant association was detected in blacks. Lower 1,25(OH)2D was associated with faster kidney function decline in both whites and blacks, although the estimates were not statistically significant. In conclusion, lower 25(OH)D levels were significantly associated with faster eGFR decline in a cohort of HIV-infected white men, but not in those with black ancestry. Further research is warranted to investigate the association of 25(OH)D and 1,25(OH)2D with kidney function decline in larger and ethnically diverse populations.
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Affiliation(s)
- Adrienne Tin
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Long Zhang
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Michelle M. Estrella
- Kidney Health Research Collaborative, University of California, San Francisco, California
| | - Andy Hoofnagle
- Department of Laboratory Medicine, University of Washington, Seattle, Washington
| | - Casey M. Rebholz
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Todd T. Brown
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Frank J. Palella
- Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Mallory D. Witt
- Los Angeles Biomedical Research Institute at Harbor-UCLA and David Geffen School of Medicine at University of California, Los Angeles, California
| | - Lisa P. Jacobson
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Lawrence A. Kingsley
- Department of Infectious Diseases and Microbiology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Alison G. Abraham
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
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49
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Correlates and family aggregation of vitamin D concentrations in school-aged children and their parents in nine Mesoamerican countries. Public Health Nutr 2017; 20:2754-2765. [DOI: 10.1017/s1368980017001616] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AbstractObjectiveTo determine the associations of sociodemographic characteristics, diet and outdoor activity as an indicator of sun exposure with serum 25-hydroxyvitamin D (25(OH)D) concentrations in children and their parents from Mesoamerica. We also quantified family aggregation of serum 25(OH)D.DesignCross-sectional study. Serum 25(OH)D concentrations were quantified using immunoassay. We compared the distribution of 25(OH)D concentrations in adults and children by levels of each correlate with the use of linear regression. Family aggregation was estimated using Pearson and intraclass correlation coefficients.SettingCapital cities of Guatemala, El Salvador, the Dominican Republic, Honduras, Nicaragua, Costa Rica, Panama and Belize, and Tuxtla Gutiérrez in Mexico.SubjectsChildren (n223) aged 7–12 years and 492 parents.ResultsMean (sd) 25(OH)D concentrations in adults and children were 81·3 (21·1) and 79·5 (18·1) nmol/l, respectively. Prevalence of vitamin D deficiency (VDD; 25(OH)D <50 nmol/l) was 3·9 % among adults and 3·6 % among children. In adults, adjusted mean 25(OH)D concentrations were highest in Nicaragua (P<0·0001). Serum 25(OH)D was positively related to time spent gardening (P=0·03). Among children, 25(OH)D concentrations were positively associated with male sex (P=0·005), dairy intake (P=0·03) and mother’s serum 25(OH)D concentrations (P<0·0001); and inversely associated with mother’s BMI (P=0·02) and number of home assets (P=0·04). Family membership explained 31 % of the variability in 25(OH)D concentrations; aggregation was highest between mothers and children.ConclusionsVDD prevalence was low in this study. Sociodemographic characteristics, diet and outdoor activity predict serum 25(OH)D. Family aggregation of serum 25(OH)D is high between mothers and children.
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50
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The associations between VDR BsmI polymorphisms and risk of vitamin D deficiency, obesity and insulin resistance in adolescents residing in a tropical country. PLoS One 2017; 12:e0178695. [PMID: 28617856 PMCID: PMC5472260 DOI: 10.1371/journal.pone.0178695] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 05/17/2017] [Indexed: 01/01/2023] Open
Abstract
Background The vitamin D receptor (VDR) gene is expressed abundantly in different tissues; including adipocytes and pancreatic beta cells. The rs1544410 or BsmI single nucleotide polymorphism (SNP) in the intronic region of the VDR gene has been previously associated with vitamin D levels, obesity and insulin resistance. Aims This study was aimed to examine the association between BsmI polymorphism and risk of vitamin D deficiency, obesity and insulin resistance in adolescents living in a tropical country. Methods Thirteen-year-old adolescents were recruited via multistage sampling from twenty-three randomly selected schools across the city of Kuala Lumpur, Malaysia (n = 941). Anthropometric measurements were obtained. Obesity was defined as body mass index higher than the 95th percentile of the WHO chart. Levels of fasting serum vitamin D (25-hydroxyvitamin D (25(OH)D)), glucose and insulin were measured. HOMA-IR was calculated as an indicator for insulin resistance. Genotyping was performed using the Sequenom MassARRAY platform (n = 807). The associations between BsmI and vitamin D, anthropometric parameters and HOMA-IR were examined using analysis of covariance and logistic regression. Result Those with AA genotype of BsmI had significantly lower levels of 25(OH)D (p = 0.001) compared to other genotypes. No significant differences was found across genotypes for obesity parameters. The AA genotype was associated with higher risk of vitamin D deficiency (p = 0.03) and insulin resistance (p = 0.03) compared to GG. The A allele was significantly associated with increased risk of vitamin D deficiency compared to G allele (adjusted odds ratio (OR) = 1.63 (95% Confidence Interval (CI) 1.03–2.59, p = 0.04). In those with concurrent vitamin D deficiency, having an A allele significantly increased their risk of having insulin resistance compared to G allele (adjusted OR = 2.66 (95% CI 1.36–5.19, p = 0.004). Conclusion VDR BsmI polymorphism was significantly associated with vitamin D deficiency and insulin resistance, but not with obesity in this population.
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