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Spyksma EE, Alexandridou A, Mai K, Volmer DA, Stokes CS. An Overview of Different Vitamin D Compounds in the Setting of Adiposity. Nutrients 2024; 16:231. [PMID: 38257127 PMCID: PMC10820956 DOI: 10.3390/nu16020231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/05/2024] [Accepted: 01/06/2024] [Indexed: 01/24/2024] Open
Abstract
A large body of research shows an association between higher body weight and low vitamin D status, as assessed using serum 25-hydroxyvitamin D concentrations. Vitamin D can be metabolised in adipose tissue and has been reported to influence gene expression and modulate inflammation and adipose tissue metabolism in vitro. However, the exact metabolism of vitamin D in adipose tissue is currently unknown. White adipose tissue expresses the vitamin D receptor and hydroxylase enzymes, substantially involved in vitamin D metabolism and efficacy. The distribution and concentrations of the generated vitamin D compounds in adipose tissue, however, are largely unknown. Closing this knowledge gap could help to understand whether the different vitamin D compounds have specific health effects in the setting of adiposity. This review summarises the current evidence for a role of vitamin D in adipose tissue and discusses options to accurately measure vitamin D compounds in adipose tissue using liquid chromatography tandem mass spectrometry (LC/MS-MS).
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Affiliation(s)
- Eva E. Spyksma
- Food and Health Research Group, Faculty of Life Sciences, Humboldt University Berlin, 14195 Berlin, Germany;
- Bioanalytical Chemistry, Department of Chemistry, Humboldt University Berlin, 12489 Berlin, Germany; (A.A.); (D.A.V.)
| | - Anastasia Alexandridou
- Bioanalytical Chemistry, Department of Chemistry, Humboldt University Berlin, 12489 Berlin, Germany; (A.A.); (D.A.V.)
| | - Knut Mai
- Department of Endocrinology & Metabolism, Charité—Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, 10117 Berlin, Germany;
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, 10785 Berlin, Germany
- German Center for Diabetes Research, 90451 Nuremberg, Germany
- Department of Human Nutrition, German Institute of Human Nutrition, 14558 Nuthetal, Germany
| | - Dietrich A. Volmer
- Bioanalytical Chemistry, Department of Chemistry, Humboldt University Berlin, 12489 Berlin, Germany; (A.A.); (D.A.V.)
| | - Caroline S. Stokes
- Food and Health Research Group, Faculty of Life Sciences, Humboldt University Berlin, 14195 Berlin, Germany;
- Department of Molecular Toxicology, German Institute of Human Nutrition, 14558 Nuthetal, Germany
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Lu S, Cao ZB. Interplay between Vitamin D and Adipose Tissue: Implications for Adipogenesis and Adipose Tissue Function. Nutrients 2023; 15:4832. [PMID: 38004226 PMCID: PMC10675652 DOI: 10.3390/nu15224832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/10/2023] [Accepted: 11/16/2023] [Indexed: 11/26/2023] Open
Abstract
Adipose tissue encompasses various types, including White Adipose Tissue (WAT), Brown Adipose Tissue (BAT), and beige adipose tissue, each having distinct roles in energy storage and thermogenesis. Vitamin D (VD), a fat-soluble vitamin, maintains a complex interplay with adipose tissue, exerting significant effects through its receptor (VDR) on the normal development and functioning of adipocytes. The VDR and associated metabolic enzymes are widely expressed in the adipocytes of both rodents and humans, and they partake in the regulation of fat metabolism and functionality through various pathways. These encompass adipocyte differentiation, adipogenesis, inflammatory responses, and adipokine synthesis and secretion. This review primarily appraises the role and mechanisms of VD in different adipocyte differentiation, lipid formation, and inflammatory responses, concentrating on the pivotal role of the VD/VDR pathway in adipogenesis. This insight furnishes new perspectives for the development of micronutrient-related intervention strategies in the prevention and treatment of obesity.
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Affiliation(s)
| | - Zhen-Bo Cao
- School of Exercise and Health, Shanghai University of Sport, Shanghai 200438, China;
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3
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Eleftheriou A, Ong KK, Hughes IA, Petry CJ. Leptin and IGF-1 in Infancy Are Associated With Variants in DHCR7 and CYP2R1 That Relate With Type 1 Diabetes and 25OHD. J Clin Endocrinol Metab 2023; 108:e1394-e1402. [PMID: 37170809 PMCID: PMC10584008 DOI: 10.1210/clinem/dgad263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 05/04/2023] [Accepted: 05/08/2023] [Indexed: 05/13/2023]
Abstract
CONTEXT Vitamin D has been variably implicated in risk of developing type 1 diabetes based on cohorts of at-risk individuals. Emergent type 1 diabetes in childhood is putatively preceded by altered growth. OBJECTIVE We explored whether polymorphisms in vitamin D metabolism genes modify risk of type 1 diabetes via effects on growth in a prospective, population-based cohort of infants. METHODS The Cambridge Baby Growth Study enrolled newborns from Cambridgeshire, UK, for follow-up in infancy. In 612 infants, we genotyped single nucleotide polymorphisms in vitamin D metabolism genes that relate with type 1 diabetes: rs10741657 and rs12794714 in CYP2R1, rs12785878 in DHCR7, and rs10877012 in CYP27B1. Multivariate linear regression analyses tested associations between genotypes and anthropometric indices (weight, length, and skinfold thickness) or growth-related hormones (C-peptide, IGF-1, and leptin) in infancy. RESULTS Birth weight showed borderline associations with the diabetes risk-increasing alleles in CYP2R1, rs10741657 (β = -.11, P = .02) and rs12794714 (β = -.09, P = .04). The risk-increasing allele rs12794714 was also associated with higher IGF-1 levels at age 24 months (β = .30, P = .01). At age 3 months, the risk-increasing allele rs12785878 in DHCR7, known to negatively associate with 25-hydroxyvitamin D levels, showed a positive association with leptin levels (β = .23, P = .009), which was pronounced in girls (P = .004) vs boys (P = .7). CONCLUSION The vitamin D metabolism genes DHCR7 and CYP2R1 might influence infancy leptin and IGF-1 levels respectively. These findings open the possibility for a developmental role of vitamin D that is mediated by growth-related hormones with implications for the onset of type 1 diabetes autoimmunity.
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Affiliation(s)
| | - Ken K Ong
- Department of Paediatrics, University of Cambridge, Cambridge CB2 0QQ, UK
- MRC Epidemiology Unit, University of Cambridge, Cambridge CB2 0QQ, UK
- Institute of Metabolic Science, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Ieuan A Hughes
- Department of Paediatrics, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Clive J Petry
- Department of Paediatrics, University of Cambridge, Cambridge CB2 0QQ, UK
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Wu Y, Hui Y, Liu F, Chen H, Liu K, Chen Q, He Y, Hong N, Yan W, Kong Q, Sang H. The Association of Serum Adipokines, Insulin Resistance and Vitamin D Status in Male Patients with Androgenetic Alopecia. Clin Cosmet Investig Dermatol 2023; 16:419-427. [PMID: 36817642 PMCID: PMC9936883 DOI: 10.2147/ccid.s396697] [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: 11/14/2022] [Accepted: 02/08/2023] [Indexed: 02/15/2023]
Abstract
Background The frequent coexistence of obesity and metabolic syndrome in patients with Androgenetic alopecia (AGA), may indicate a common pathogenetic pathway with adipokines being a possible implicating cytokine. Objective This study was conducted to investigate the changes in serum levels of adipokines, insulin resistance, vitamin D status and their relationship with AGA, and the relationship between serum levels of adipokines and insulin resistance. Methods 80 male patients with AGA were selected as the experimental group and 60 healthy males served as the control group. Both the AGA group and healthy control group were divided into 2 groups according to the presence or absence of insulin resistance (IR): the IR group and the NIR group. Serum levels of leptin, adiponectin, resistin, visfatin, insulin and 25(OH)D were evaluated in all subjects. Results Compared with the control group, AGA patients showed higher serum levels of leptin and lower adiponectin/leptin (Adpn/Lep) ratio (P<0.05), and both were positively correlated with the severity of the disease. Compared with the AGA NIR group, serum leptin levels were increased in the AGA IR group (P<0.05). AGA IR group and AGA NIR group possessed lower Adpn/Lep ratio when compared with the healthy IR group and healthy NIR group respectively (P<0.05). The multi-factor logistic regression analysis results showed decreased Adpn/Lep level and increased leptin level as risk factors for AGA. AGA Patients had lower vitamin D levels than healthy controls (P<0.05). Conclusion Patients with AGA show an imbalance between pro- and anti-inflammatory adipokines, and probably be involved in AGA pathogenesis. Insulin resistance may influence levels of adipokines, but the present findings cannot indicate insulin resistance plays a role in the onset of AGA. The insufficiency and deficiency of vitamin D are common health concern in our subjects and may be involved in the dysfunction of adipocytes and the development of AGA.
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Affiliation(s)
- YiFan Wu
- Nanjing Medical University, Nanjing, 210002, People’s Republic of China
| | - Yun Hui
- Department of Dermatology, Jinling Hospital, Nanjing University, Nanjing, 210002, People’s Republic of China
| | - Fang Liu
- Department of Dermatology, Jinling Hospital, Nanjing University, Nanjing, 210002, People’s Republic of China
| | - Huan Chen
- Department of Dermatology, Jinling Hospital, Nanjing University, Nanjing, 210002, People’s Republic of China
| | - KeHan Liu
- Nanjing Medical University, Nanjing, 210002, People’s Republic of China
| | - QiYing Chen
- Department of Dermatology, Jinling Hospital, Nanjing University, Nanjing, 210002, People’s Republic of China
| | - YiFan He
- Nanjing Medical University, Nanjing, 210002, People’s Republic of China
| | - Nan Hong
- Department of Dermatology, Jinling Hospital, Nanjing University, Nanjing, 210002, People’s Republic of China
| | - WenLiang Yan
- Department of Dermatology, Jinling Hospital, Nanjing University, Nanjing, 210002, People’s Republic of China
| | - QingTao Kong
- Department of Dermatology, Jinling Hospital, Nanjing University, Nanjing, 210002, People’s Republic of China,Correspondence: QingTao Kong; Hong Sang, Jinling Hospital, Nanjing, Jiangsu, People’s Republic of China, Tel +86 025-80860092, Email ;
| | - Hong Sang
- Nanjing Medical University, Nanjing, 210002, People’s Republic of China,Department of Dermatology, Jinling Hospital, Nanjing University, Nanjing, 210002, People’s Republic of China
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Muraro EN, Sbardelotto BM, Guareschi ZM, de Almeida W, Souza Dos Santos A, Grassiolli S, Centenaro LA. Vitamin D supplementation combined with aerobic physical exercise restores the cell density in hypothalamic nuclei of rats exposed to monosodium glutamate. Clin Nutr ESPEN 2022; 52:20-27. [PMID: 36513455 DOI: 10.1016/j.clnesp.2022.09.009] [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: 02/07/2022] [Revised: 08/29/2022] [Accepted: 09/07/2022] [Indexed: 01/28/2023]
Abstract
BACKGROUND & AIMS In view of the increase in the prevalence of obesity and metabolic syndrome in childhood and adolescence, this study proposed the early and combined use of treatments to restore brain areas related to satiety. The vitamin D supplementation, aerobic exercise and the combination of these interventions on the structure of arcuate (ARC) and ventromedial (VMH) nuclei of hypothalamus were investigated in monosodium glutamate (MSG)-treated rats. METHODS Wistar rats were separated into five groups: Control group (CT); Obese group injected with MSG (OB); Obese group supplemented with vitamin D (OBvd); Obese group submitted to forced swimming training (OBexe) and Obese group treated with vitamin D supplementation and forced swimming training (OBvd + exe). RESULTS In the OB group, the visceral fat weight was significantly higher, there was a reduction in the number of glial cells in the ARC nucleus and also in the number of neurons in the ARC and VMH nuclei. Aerobic exercise was able to reduce the visceral fat weight in the OBexe group. The combination of treatments used in the OBvd + exe group reversed the loss of neurons and glial cells produced by MSG in the ARC nucleus. All treated groups exhibited a higher number of neurons in VMH nucleus, but an increase in the glial cells were observed only in the OBexe and OBvd + exe groups. CONCLUSIONS The effectiveness of obesity treatment can be favored through the early and combined use of vitamin D supplementation and aerobic exercise, since these therapies are able to restore brain nuclei involved in the control of food intake.
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Affiliation(s)
- Eduardo Natan Muraro
- Laboratório de Morfologia Experimental, Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Cascavel, Paraná, CEP: 85819-110, Brazil.
| | - Bruno Marques Sbardelotto
- Laboratório de Morfologia Experimental, Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Cascavel, Paraná, CEP: 85819-110, Brazil.
| | - Zoé Maria Guareschi
- Laboratório de Fisiologia Endócrina e Metabólica, Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Cascavel, Paraná, CEP: 85819-110, Brazil.
| | - Wellington de Almeida
- Laboratório de Morfologia Experimental, Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Cascavel, Paraná, CEP: 85819-110, Brazil.
| | - Adriana Souza Dos Santos
- Laboratório de Morfologia Experimental, Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Cascavel, Paraná, CEP: 85819-110, Brazil.
| | - Sabrina Grassiolli
- Laboratório de Fisiologia Endócrina e Metabólica, Centro de Ciências Biológicas e da Saúde, Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Cascavel, Paraná, CEP: 85819-110, Brazil.
| | - Lígia Aline Centenaro
- Laboratório de Morfologia Experimental, Centro de Ciências Médicas e Farmacêuticas, Universidade Estadual do Oeste do Paraná, Rua Universitária, 1619, Cascavel, Paraná, CEP: 85819-110, Brazil.
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Guiducci L, Vassalle C, Prosperi M, Santocchi E, Morales MA, Muratori F, Calderoni S. Vitamin D Status in Children with Autism Spectrum Disorders: Determinants and Effects of the Response to Probiotic Supplementation. Metabolites 2022; 12:metabo12070611. [PMID: 35888736 PMCID: PMC9317442 DOI: 10.3390/metabo12070611] [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: 06/01/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 02/04/2023] Open
Abstract
A relationship between the presence of clinical symptoms and gastrointestinal (GI) disturbances associated with nutritional deficiencies, including vitamin D (25(OH)D) deficiency, has been observed in autism spectrum disorder (ASD). The aim was to evaluate 25(OH)D levels according to the annual rhythm cycle, gender, the severity of autism, nutritional or clinical status, inflammatory and metabolic biomarkers, GI symptoms, and the clinical response to probiotic/placebo supplementation in preschooler children with ASD. Eighty-one ASD preschoolers (67 males) were assessed with standardized tools for ASD severity (ADOS score) and GI symptoms (by GI-Index at six-items and at nine-items, the latter defined as the Total GI-Index). The 25(OH)D levels were compared among different ASD subgroups according to metabolic and inflammatory biomarkers (leptin, insulin, resistin, PAI-1, MCP-1, TNF-alfa, and IL-6), gender, and the presence or absence of: (i) GI symptoms, (ii) the response to probiotic supplementation (the improvement of GI symptomatology), (iii) the response to probiotic supplementation (improvement of ASD severity). Only 25% of the ASD children presented an adequate 25(OH)D status (≥30 ng/mL according to the Endocrine Society guidelines). All the 25(OH)D levels falling in the severe deficiency range (<10 ng/mL) were observed in the male subgroup. A significant inverse correlation between 25(OH)D and leptin was observed (R = −0.24, p = 0.037). An inverse correlation was found between 25(OH)D levels and the GI Index 6-Items and Total GI-Index (R = −0.25, p = 0.026; −0.27, = 0.009) and a direct relationship with the probiotic response (R = 0.4, p = 0.05). The monitoring of 25(OH)D levels and the co-administration of 25(OH)D and probiotic supplementation could be considered in ASD from early ages.
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Affiliation(s)
- Letizia Guiducci
- Institute of Clinical Physiology, CNR, 56124 Pisa, Italy; (L.G.); (M.A.M.)
| | - Cristina Vassalle
- Fondazione CNR-Regione Toscana G. Monasterio, 56124 Pisa, Italy
- Correspondence:
| | - Margherita Prosperi
- IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (M.P.); (F.M.); (S.C.)
| | - Elisa Santocchi
- UFSMIA Zona Valle del Serchio, Azienda USL Toscana Nord Ovest, 55032 Castelnuovo di Garfagnana, Italy;
| | | | - Filippo Muratori
- IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (M.P.); (F.M.); (S.C.)
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
| | - Sara Calderoni
- IRCCS Fondazione Stella Maris, Calambrone, 56128 Pisa, Italy; (M.P.); (F.M.); (S.C.)
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy
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Szymczak-Pajor I, Miazek K, Selmi A, Balcerczyk A, Śliwińska A. The Action of Vitamin D in Adipose Tissue: Is There the Link between Vitamin D Deficiency and Adipose Tissue-Related Metabolic Disorders? Int J Mol Sci 2022; 23:956. [PMID: 35055140 PMCID: PMC8779075 DOI: 10.3390/ijms23020956] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 01/09/2022] [Accepted: 01/10/2022] [Indexed: 12/11/2022] Open
Abstract
Adipose tissue plays an important role in systemic metabolism via the secretion of adipocytokines and storing and releasing energy. In obesity, adipose tissue becomes dysfunctional and characterized by hypertrophied adipocytes, increased inflammation, hypoxia, and decreased angiogenesis. Although adipose tissue is one of the major stores of vitamin D, its deficiency is detective in obese subjects. In the presented review, we show how vitamin D regulates numerous processes in adipose tissue and how their dysregulation leads to metabolic disorders. The molecular response to vitamin D in adipose tissue affects not only energy metabolism and adipokine and anti-inflammatory cytokine production via the regulation of gene expression but also genes participating in antioxidant defense, adipocytes differentiation, and apoptosis. Thus, its deficiency disturbs adipocytokines secretion, metabolism, lipid storage, adipogenesis, thermogenesis, the regulation of inflammation, and oxidative stress balance. Restoring the proper functionality of adipose tissue in overweight or obese subjects is of particular importance in order to reduce the risk of developing obesity-related complications, such as cardiovascular diseases and diabetes. Taking into account the results of experimental studies, it seemed that vitamin D may be a remedy for adipose tissue dysfunction, but the results of the clinical trials are not consistent, as some of them show improvement and others no effect of this vitamin on metabolic and insulin resistance parameters. Therefore, further studies are required to evaluate the beneficial effects of vitamin D, especially in overweight and obese subjects, due to the presence of a volumetric dilution of this vitamin among them.
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Affiliation(s)
- Izabela Szymczak-Pajor
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland;
| | - Krystian Miazek
- Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, 15 Wroblewskiego, 93-590 Lodz, Poland;
| | - Anna Selmi
- Department of Molecular Biophysics, University of Lodz, 141/143 Pomorska, 90-236 Lodz, Poland; (A.S.); (A.B.)
| | - Aneta Balcerczyk
- Department of Molecular Biophysics, University of Lodz, 141/143 Pomorska, 90-236 Lodz, Poland; (A.S.); (A.B.)
| | - Agnieszka Śliwińska
- Department of Nucleic Acid Biochemistry, Medical University of Lodz, 251 Pomorska Str., 92-213 Lodz, Poland;
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Abu-Samak MS, Hasoun LZ, Barham A, Mohammad BA, Mosleh I, Aljaberi A, Awwad SH. The supplementary effects of omega-3 fatty acid alone and in a combination with vitamin D3 on serum leptin levels: A randomized clinical trial on men and women with vitamin D deficiency. PHARMACIA 2021. [DOI: 10.3897/pharmacia.68.e64422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Purpose: This randomized clinical trial (RCT) was designed to assess the effect of VD3, n-3FA, and their combination on serum leptin levels in people with vitamin D deficiency (VDD).
Subjects and methods: One hundred and forty six participants, were randomly assigned into four groups supplemented with the dose of 50,000 IU VD3 taken weekly (D), 300 mg n-3FA taken daily (Om), and their combination (D+Om) or control (C) for eight weeks. Fasting baseline and follow-up (10 weeks; 8 weeks supplementation plus washout period of 2 weeks) of serum 25 hydroxyvitamin D (25OHD), leptin, glucose, triglycerides (TG), parathyroid hormone (PTH), calcium, and phosphorus were assayed. A paired T-test was used to assess the changes in serum leptin levels over of the follow-up period.
Results: Significant increase in follow-up serum leptin (10.62 ± 7.18 to 14.42 ± 8.29 ng/mL, P = 0.002) and TG (154 ± 84.4 to 200.1 ± 79, P = 0.015) levels were observed in n-3-FA supplemented group. Combination therapy (VD3 plus n-3 FA) significantly increased serum 25OHD (13.49 ± 4.64 to 37.09 ± 11.13 ng/mL, P < 0.001), TG levels (114.3 ± 57.3 to 139.1 ± 60.7 mg/mL, P = 0.007) and insignificantly serum leptin (6.74 ± 4.87 to 8.01 ± 6.77 ng/mL, P = 0.269).
Conclusion: Our study referred that notable elevation in leptin and TG levels might be linked to leptin resistance. However, further RCTs are required to clarify possible consequences resulted from the extensive administration of n-3FA supplements and their combinations with high doses of VD3 supplements on humans’ health.
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Karampela I, Sakelliou A, Vallianou N, Christodoulatos GS, Magkos F, Dalamaga M. Vitamin D and Obesity: Current Evidence and Controversies. Curr Obes Rep 2021; 10:162-180. [PMID: 33792853 DOI: 10.1007/s13679-021-00433-1] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/11/2021] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW Evidence from observational studies suggests that obesity is associated with low vitamin D. As both obesity and hypovitaminosis D present an alarmingly increased prevalence worldwide, there is an intense research interest to clarify all aspects of this association. This review summarizes current evidence from meta-analyses investigating vitamin D status in obesity, including the effects of weight loss and bariatric surgery on vitamin D status and the outcomes of vitamin D supplementation on body weight. We also discuss potential pathophysiologic mechanisms and important controversies. RECENT FINDINGS Data from meta-analyses consistently support an inverse association of vitamin D levels with body weight. However, the impact of weight loss on improving vitamin D status is small, while studies on the supplementation with vitamin D after bariatric surgery have shown conflicting results regarding vitamin D status. Moreover, interventional studies do not support a beneficial effect of vitamin D supplementation on body weight. These findings warrant a cautious interpretation due to important methodological limitations and confounding factors, such as high heterogeneity of studies, variable methods of determination of vitamin D and definition of deficiency/insufficiency, use of various adiposity measures and definitions of obesity, and inadequate adjustment for confounding variables influencing vitamin D levels. The underlying pathogenetic mechanisms associating low vitamin D in obesity include volumetric dilution, sequestration into adipose tissue, limited sunlight exposure, and decreased vitamin D synthesis in the adipose tissue and liver. Experimental studies have demonstrated that low vitamin D may be implicated in adipose tissue differentiation and growth leading to obesity either by regulation of gene expression or through modulation of parathyroid hormone, calcium, and leptin. Obesity is associated with low vitamin D status but weight loss has little effect on improving this; vitamin D supplementation is also not associated with weight loss. Evidence regarding vitamin D status after bariatric surgery is contradicting. The link between vitamin D and obesity remains controversial due to important limitations and confounding of studies. More research is needed to clarify the complex interplay between vitamin D and adiposity.
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Affiliation(s)
- Irene Karampela
- Second Department of Critical Care, Medical School, Attikon General University Hospital, National and Kapodistrian University of Athens, 1 Rimini St, Haidari, 12462, Athens, Greece.
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, Goudi, 11527, Athens, Greece.
| | - Alexandra Sakelliou
- Second Department of Critical Care, Medical School, Attikon General University Hospital, National and Kapodistrian University of Athens, 1 Rimini St, Haidari, 12462, Athens, Greece
| | - Natalia Vallianou
- First Department of Internal Medicine, Evangelismos General Hospital, 45-47 Ypsilantou St, 10676, Athens, Greece
| | - Gerasimos-Socrates Christodoulatos
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, Goudi, 11527, Athens, Greece
| | - Faidon Magkos
- Department of Nutrition, Exercise, and Sports, University of Copenhagen, Copenhagen, Denmark
| | - Maria Dalamaga
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, Goudi, 11527, Athens, Greece
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10
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Nimitphong H, Guo W, Holick MF, Fried SK, Lee MJ. Vitamin D Inhibits Adipokine Production and Inflammatory Signaling Through the Vitamin D Receptor in Human Adipocytes. Obesity (Silver Spring) 2021; 29:562-568. [PMID: 33624437 DOI: 10.1002/oby.23109] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 12/01/2020] [Accepted: 12/05/2020] [Indexed: 11/10/2022]
Abstract
OBJECTIVE The purpose of this study was to investigate the effects of vitamin D on adipokine expression and inflammation in human adipose tissues and adipocytes and evaluate the molecular mechanisms involved. METHODS Omental and abdominal subcutaneous human adipose tissues were treated with 1,25-dihydroxyvitamin D3 (1,25(OH)2 D3 ), and adipokine levels were measured. Vitamin D effects were measured with or without dexamethasone because glucocorticoids are known to affect vitamin D actions. Using RNA interference, we examined whether the vitamin D receptor (VDR) mediated vitamin D actions on adipokine expression and inflammatory signaling pathways in human adipocytes. RESULTS mRNA levels and secretion of leptin and IL-6 were suppressed by 1,25(OH)2 D3 in omental adipose tissues. Cotreatment with dexamethasone did not affect these inhibitory actions but partially blocked CYP24A1 induction. Similar results were observed in the subcutaneous depot. In addition, 1,25(OH)2 D3 suppressed leptin and IL-6 expression as well as nuclear factor-κB and extracellular signal-regulated kinase-1/2 phosphorylation in human adipocytes. Adipokine expression also was decreased by 25-hydroxyvitamin D3 (25(OH)D3 ), but not vitamin D3 . Knockdown of VDR increased the inflammatory signaling activity in the control condition and blocked the inhibitory effects of 1,25(OH)2 D3 on adipokine and inflammatory signaling pathways. CONCLUSION Vitamin D acts through VDR to inhibit inflammatory pathways and adipokine expression in human adipocytes. Increasing vitamin D status may ameliorate obesity-associated metabolic complications by decreasing adipose tissue inflammation.
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Affiliation(s)
- Hataikarn Nimitphong
- Department of Medicine, Section of Endocrinology and Metabolism, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
- Department of Medicine, Section of Endocrinology, Diabetes and Nutrition, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Weimin Guo
- Department of Medicine, Section of Endocrinology, Diabetes and Nutrition, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Michael F Holick
- Department of Medicine, Section of Endocrinology, Diabetes and Nutrition, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Susan K Fried
- Department of Medicine, Section of Endocrinology, Diabetes and Nutrition, Boston University School of Medicine, Boston, Massachusetts, USA
- Diabetes Obesity and Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Mi-Jeong Lee
- Department of Medicine, Section of Endocrinology, Diabetes and Nutrition, Boston University School of Medicine, Boston, Massachusetts, USA
- Department of Human Nutrition, Food and Animal Sciences, University of Hawaii at Manoa, Honolulu, Hawaii, USA
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11
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Kaisar HH, Halima ASA. Association of vitamin D supplementation with serum leptin and metabolic parameters in Egyptian patients with non-alcoholic steatohepatitis: a prospective study. EGYPTIAN LIVER JOURNAL 2020. [DOI: 10.1186/s43066-020-00049-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Nonalcoholic steatohepatitis (NASH) is the progressive form of NAFLD, a common cause of liver disease, with increased chance of progression to liver fibrosis, cirrhosis, and hepatocellular carcinoma. Circulating leptin is increased in patients with NASH. It is an independent positive predictor of the severity of hepatic steatosis. Vitamin D is a lipophilic molecule essential to maintain calcium and phosphate balance. Moreover, it has antifibrotic, antiproliferative, and anti-inflammatory effects on the liver. Vitamin D deficiency is a worldwide condition and very common in patients with NASH. Low serum vitamin D has been shown to predispose to intrahepatic lipid accumulation leading to NAFLD. The aim of this study was to investigate the association of vitamin D supplementation with serum leptin and metabolic parameters in Egyptian patients with non-alcoholic steatohepatitis
Results
Patients with NASH group had statistically significant higher values of diastolic blood pressure (94.3 ± 11.9 mmHg, p < 0.0001), glycated hemoglobin (8.0 ± 2.4%, p < 0.0001), fasting blood sugar (165.6 ± 62.0 mg/dL, p < 0.0001), fasting insulin level (24.2 ± 3.0 μU/ml, p < 0.0001), homeostatic model assessment of insulin resistance (HOMA-IR) (1.8 ± 0.7, p < 0.0001), alanine transferase (ALT) (78.2 ± 36.7 U/L, p < 0.0001), aspartate transferase (AST) (108.6 ± 85.6 U/L, p < 0.0001), NAFLD fibrosis score (− 0.78 ± 0.9, p < 0.0001), total cholesterol (233.0 ± 40.9 mg/dL, p = 0.0011), low-density lipoprotein (117.5 ± 41.6 mg/dL, p = 0.0084), and triglycerides (229.7 ± 62.1 mg/dL, p < 0.0001) than the control group. Moreover, they had lower serum vitamin D level (15.6 ± 6.6 ng/ml, p = 0.0004) and higher serum leptin level (35.9 ± 28.4 ng/ml, p < 0.0001) than the control group. Following vitamin D supplementation, there was a statistically significant reduction in HbA1c (6.8 ± 1.3%, p = 0.0055), fasting blood sugar (136.1 ± 32.7 mg/dL, p = 0.0094), fasting insulin level (22.9 ± 1.8 μU/ml, p = 0.0236), HOMA-IR (1.4 ± 0.4, p = 0.0026), ALT (55.3 ± 21.3 U/L, p = 0.0010), AST (73.1 ± 54.2 U/L, p = 0.0297), and triglycerides (203.6 ± 49.8 mg/dL, p = 0.0415) in patients with NASH. There was a statistically significant increase in serum vitamin D level (33.0 ± 7.6 ng/ml, p < 0.0001) and decrease in serum leptin level (23.5 ± 12.9 ng/ml, p = 0.0140) after treatment.
Conclusions
Vitamin D supplementation in patients with NASH in a dose of 4000 IU/day for 12 weeks improves severity of hepatic inflammation, decreases insulin resistance, improves glycemic control, corrects dyslipidemia, and protects against lipotoxicity by inhibition of serum leptin.
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12
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Nimitphong H, Park E, Lee MJ. Vitamin D regulation of adipogenesis and adipose tissue functions. Nutr Res Pract 2020; 14:553-567. [PMID: 33282119 PMCID: PMC7683208 DOI: 10.4162/nrp.2020.14.6.553] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 06/03/2020] [Accepted: 07/16/2020] [Indexed: 12/11/2022] Open
Abstract
Vitamin D insufficiency is associated with obesity and its related metabolic diseases. Adipose tissues store and metabolize vitamin D and expression levels of vitamin D metabolizing enzymes are known to be altered in obesity. Sequestration of vitamin D in large amount of adipose tissues and low vitamin D metabolism may contribute to the vitamin D inadequacy in obesity. Vitamin D receptor is expressed in adipose tissues and vitamin D regulates multiple aspects of adipose biology including adipogenesis as well as metabolic and endocrine function of adipose tissues that can contribute to the high risk of metabolic diseases in vitamin D insufficiency. We will review current understanding of vitamin D regulation of adipose biology focusing on vitamin D modulation of adiposity and adipose tissue functions as well as the molecular mechanisms through which vitamin D regulates adipose biology. The effects of supplementation or maintenance of vitamin D on obesity and metabolic diseases are also discussed.
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Affiliation(s)
- Hataikarn Nimitphong
- Division of Endocrinology and Metabolism, Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
| | - Eunmi Park
- Department of Food and Nutrition, Hannam University, Daejeon 34430, Korea
| | - Mi-Jeong Lee
- Department of Human Nutrition, Food and Animal Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii, Honolulu, HI 96822, USA
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13
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Siachpazidou DI, Stavrou V, Zouridis S, Gogou E, Economou NT, Pastaka C, Hatzoglou C, Gourgoulianis KI. 25-hydroxyvitamin D levels in patients with obstructive sleep apnea and continuous positive airway pressure treatment: a brief review. SLEEP SCIENCE (SAO PAULO, BRAZIL) 2020; 13:78-83. [PMID: 32670496 PMCID: PMC7347362 DOI: 10.5935/1984-0063.20190126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The aim of the present study is to summarize the information available, to time, regarding the relationship between obstructive sleep apnea (OSA) and vitamin-D (vD) levels. Moreover, the association between vD deficiency and OSA severity will also be examined. At the end of the present study the possible advantageous effect of CPAP on vD-levels will be summarized. Extensive literature search was conducted in PubMed, Scopus, The Cochrane Library and Embase database. 13 articles were found concerning OSA and vD, of which 2 articles included treatment with a CPAP. Patients with OSA exhibit low levels of vD in the blood serum, and women present an even lower mean value than men. Lack of VD in blood serum seems to be related to the severity of the OSA syndrome, and to the short duration of sleep. OSA patients with concurrent metabolic syndrome exhibit lower serum vD-levels, as compared with those without metabolic syndrome. Long-term continuous positive airway pressure treatment (CPAP) treatment can increase vD-levels in male OSA patients while no change is observed in women. OSA patients demonstrate lower levels of vD in multiple studies. The severity of the OSA may be associated with vD-levels and deficiency, however more studies are needed to assess that relationship due to contradictions in current bibliography. CPAP can increase vD-levels in male patients. The relation between vD and OSA and/or CPAP is important but recent; therefore further research is needed about the exact relationship to be clarified. Also, the effect of gender hormones on vD regulation in OSA patients should be further investigated.
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Affiliation(s)
- Dimitra I Siachpazidou
- Laboratory of Respiratory Sleep Disorders, Department of Respiratory Medicine, Faculty of Medicine University of Thessaly, Larissa, Greece
| | - Vasileios Stavrou
- Laboratory of Cardio-Pulmonary Testing, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Spyridon Zouridis
- Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Eudoxia Gogou
- Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | | | - Chaido Pastaka
- Laboratory of Respiratory Sleep Disorders, Department of Respiratory Medicine, Faculty of Medicine University of Thessaly, Larissa, Greece.,Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Chrissi Hatzoglou
- Department of Physiology, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Konstantinos I Gourgoulianis
- Laboratory of Respiratory Sleep Disorders, Department of Respiratory Medicine, Faculty of Medicine University of Thessaly, Larissa, Greece.,Laboratory of Cardio-Pulmonary Testing, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece.,Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece.,Sleep Study Unit, Eginition Hospital, University of Athens Medical School, Athens, Greece.,Department of Physiology, Faculty of Medicine, University of Thessaly, Larissa, Greece
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14
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Milagres LC, Filgueiras MDS, Rocha NP, Suhett LG, de Albuquerque FM, Juvanhol LL, Franceschini SDCC, de Novaes JF. Cutoff point estimation for serum vitamin D concentrations to predict cardiometabolic risk in Brazilian children. Eur J Clin Nutr 2020; 74:1698-1706. [PMID: 32341487 DOI: 10.1038/s41430-020-0624-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 03/20/2020] [Accepted: 03/25/2020] [Indexed: 01/19/2023]
Abstract
BACKGROUND/OBJECTIVES To evaluate serum 25(OH)D concentrations and determine a cutoff point for cardiometabolic risk in children. SUBJECT/METHODS This is a cross-sectional study with a representative sample of 378 8-9-year-old children from all urban schools in the city of Viçosa, MG, Brazil. Sociodemographic data and information on lifestyle, and food consumption were collected. Biochemical evaluation included glucose, triglycerides, leptin, calcidiol [25(OH)D], and parathormone. Body composition was assessed by dual energy X-ray absorptiometry. Cardiometabolic risk was considered when nontraditional risk markers were detected, including triglyceride × glycemia index (TyG index), hyperleptinemia, and hypertriglyceridemic waist phenotype (HWP). The receiver operating characteristic curve (ROC) was used to define the cutoff point for serum 25(OH)D to predict cardiometabolic risk. RESULTS 25(OH)D showed better predictive capacity for grouping of cardiometabolic risk markers than for either single or paired markers. The area under the curve for grouping of risk markers was 0.636 (95% CI: 0.585, 0.685, P < 0.001). The cutoff point to predict cardiometabolic risk was defined as 32.0 ng/mL. CONCLUSION 25(OH)D presented good predictive capacity for cardiometabolic risk and 25(OH)D concentration higher than 32 ng/mL was associated with a 49% reduction of cardiometabolic risk prevalence in prepubertal Brazilian children.
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Affiliation(s)
- Luana Cupertino Milagres
- Department of Nutrition and Health, Biological Sciences Center, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - Mariana De Santis Filgueiras
- Department of Nutrition and Health, Biological Sciences Center, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Naruna Pereira Rocha
- Department of Nutrition and Health, Biological Sciences Center, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Lara Gomes Suhett
- Department of Nutrition and Health, Biological Sciences Center, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Fernanda Martins de Albuquerque
- Department of Nutrition and Health, Biological Sciences Center, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | - Leidjaira Lopes Juvanhol
- Department of Nutrition and Health, Biological Sciences Center, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
| | | | - Juliana Farias de Novaes
- Department of Nutrition and Health, Biological Sciences Center, Federal University of Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil
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15
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Wang Q, Ma A, Gao T, Liu Y, Ren L, Han L, Wei B, Liu Q, Dong C, Mu Y, Li D, Kok FJ, Schouten EG. Poor Vitamin D Status in Active Pulmonary Tuberculosis Patients and Its Correlation with Leptin and TNF-α. J Nutr Sci Vitaminol (Tokyo) 2020; 65:390-398. [PMID: 31666475 DOI: 10.3177/jnsv.65.390] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Vitamin D deficiency (VDD) is common in tuberculosis (TB) and may be implicated in the etiology of the disease and in its clinical course. The aim of this study was to investigate the association between leptin, inflammatory markers and VD status in TB patients, stratified for presence or absence of diabetes mellitus (DM). Two hundred ninety-nine TB patients were recruited from October 2015 to August 2016. Also, 91 normal controls were included. The information including socio-demographics, dietary intake and living habits was obtained by face-to-face interview. Serum concentrations of leptin and TNF-α, CRP and IL-6 were compared between TB patients with and without severe VDD (SVDD). Pearson's correlation was used to analyze the association between TNF-α, leptin and 25-hydroxyvitamin D (25(OH)D). A significantly higher prevalence of VDD and SVDD was observed in TB patients compared with normal controls (93.0% vs 70.3%, 65.9% vs 3.3% respectively). Concentration of leptin was significantly lower, while TNF-α higher in TB patients with SVDD compared to those without (p<0.05). After adjustment for confounders, leptin was positively associated with 25(OH)D (r=0.210, p=0.002) with similar correlation in TB patients with DM (r=0.240, p=0.020). A negative association between TNF-α and 25(OH)D was observed (r=-0.197, p=0.003), which was significant only in the subgroup without DM (r=-0.304, p=0.001). Our findings indicate that a higher VD status in TB patients may be related to higher immune activity and less serious tissue damage, and that this relation is different according to presence or absence of DM co-morbidity.
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Affiliation(s)
- Qiuzhen Wang
- Institute of Human Nutrition, Medical College of Qingdao University
| | - Aiguo Ma
- Institute of Human Nutrition, Medical College of Qingdao University
| | - Tianlin Gao
- Institute of Human Nutrition, Medical College of Qingdao University
| | | | - Lisheng Ren
- The Affiliated Hospital of Qingdao University
| | - Lei Han
- The Affiliated Hospital of Qingdao University
| | - Boyang Wei
- Institute of Human Nutrition, Medical College of Qingdao University
| | - Qian Liu
- Institute of Human Nutrition, Medical College of Qingdao University
| | - Chunjiang Dong
- Institute of Human Nutrition, Medical College of Qingdao University
| | - Yuze Mu
- Institute of Human Nutrition, Medical College of Qingdao University
| | - Duo Li
- Institute of Human Nutrition, Medical College of Qingdao University
| | - Frans J Kok
- Division of Human Nutrition, Wageningen University
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16
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Al-Obeidi RA, Al-Numan AH. Study of low vitamin D among children with anorexia in Sulaymaniyah, Kurdistan region, Iraq during summer months. Saudi Med J 2019; 40:1129-1133. [PMID: 31707410 PMCID: PMC6901778 DOI: 10.15537/smj.2019.11.24598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objectives: To determine the impact of vitamin D deficiency and insufficiency on the development of anorexia in children with mild malnutrition without an obvious cause. Methods: This cross-sectional study was conducted in Faruk Medical City, Sulaymaniyah, Kurdistan Region, Iraq, between May and September 2018. It included 39 mildly malnourished children with a poor appetite for over 3 months and 156 children who were healthy except for minor illnesses as the control group. All the children were regular attendees at the outpatient clinic and were tested for serum levels of 25-hydroxy vitamin D. We used binary logistic regression statistical analysis to measure the significance of the association between vitamin D deficiency/insufficiency and anorexia with mild malnutrition in young children. Results: Of the 39 children in the anorexia group, 20 had vitamin D deficiency, and the remaining 6 had vitamin D insufficiency. On the other hand, 16 of the remaining children with normal appetites, showed a vitamin D deficiency, and 38 of them displayed insufficiency. Statistically significant association between vitamin D deficiency and anorexia with malnutrition was noted (odd ratio: 9.808; 95% confidence interval: 4.089 - 23.523; p=0.0001), while it was insignificant with vitamin D insufficiency. Conclusion: This study displayed a noteworthy relationship between vitamin D deficiency and anorexia with mild malnutrition in young children.
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Affiliation(s)
- Riyadh A Al-Obeidi
- Department of Pediatric, College of Medicine, University of Mosul, Mosul, Iraq. E-mail.
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17
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Chen LW, Chien CH, Kuo SF, Yu CY, Lin CL, Chien RN. Low vitamin D level was associated with metabolic syndrome and high leptin level in subjects with nonalcoholic fatty liver disease: a community-based study. BMC Gastroenterol 2019; 19:126. [PMID: 31311491 PMCID: PMC6636103 DOI: 10.1186/s12876-019-1040-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/30/2019] [Indexed: 02/06/2023] Open
Abstract
Background This study aimed to evaluate the association between serum vitamin D levels and nonalcoholic fatty liver disease (NAFLD) parameters, such as metabolic syndrome (MS), inflammatory cytokines (tumor necrosis factor, high sensitive C-reactive protein) and adipokines (adiponectin, leptin). Methods From August 2013 to August 2016, a community-based study was performed in the north-eastern region of Taiwan. All subjects received a demographic survey, blood testing and abdominal ultrasonography (US). The vitamin D level was evaluated by quartile divide or used the classification of deficiency (< 20 ng/ml), insufficiency (20–30 ng/ml) and sufficiency (> 30 ng/ml). Results Subjects were divided into NAFLD group and normal control (subjects number = 564 in each group) following abdominal US study and matching age and gender. The mean age was 57.1 years in NAFLD group and 57.5 in control group. Subjects in NAFLD group had a lower mean vitamin D than those in the control group (28.5 ± 9.5 ng/ml vs. 29.9 ± 10.2 ng/ml, P = 0.018). Subjects with serum vitamin D deficiency or insufficiency had higher odds for MS than those with sufficient vitamin D levels [deficiency vs. sufficiency, adjusted odds ratio (aOR) =1.860 (95% CI = 1.234–2.804), P = 0.003; insufficiency vs. sufficiency, aOR = 1.669 (95% CI = 1.237–2.251), P = 0.001]. Similarly, subjects in the lowest quartile of vitamin D had higher odds for MS than those in the highest quartile of vitamin D (aOR = 2.792, 95% CI = 1.719–4.538, P < 0.001). Vitamin D level was positively correlated with age and male, but negatively correlated with serum leptin level. Conclusion Subjects with low vitamin D level had higher odds for MS, but higher levels of leptin, compared to those with high vitamin D levels.
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Affiliation(s)
- Li-Wei Chen
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401
| | - Cheng-Hung Chien
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401
| | - Sheng-Fong Kuo
- Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Metabolism and Endocrinology, Chang-Gung Memorial Hospital and University at Keelung, Keelung, Taiwan
| | - Chia-Ying Yu
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401
| | - Chih-Lang Lin
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401
| | - Rong-Nan Chien
- Department of Gastroenterology and Hepatology, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401. .,Community Medicine Research Center, Chang-Gung Memorial Hospital and University at Keelung, 12F, No 222, Mai-Jin Road, Keelung, Taiwan, 20401.
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18
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Jorde R, Stunes AK, Kubiak J, Joakimsen R, Grimnes G, Thorsby PM, Syversen U. Effects of vitamin D supplementation on bone turnover markers and other bone-related substances in subjects with vitamin D deficiency. Bone 2019; 124:7-13. [PMID: 30959189 DOI: 10.1016/j.bone.2019.04.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 03/14/2019] [Accepted: 04/04/2019] [Indexed: 12/31/2022]
Abstract
In observational studies, vitamin D deficiency is a risk factor for low bone density and future fractures, whereas a causal relation has been difficult to show in randomized controlled trials (RCTs). Similarly, vitamin D deficiency has been associated with increased bone turnover, but RCTs with vitamin D have not shown conclusive effects. This could be due to inclusion of vitamin D sufficient subjects and low vitamin D doses. In the present study 399 subjects with mean baseline serum 25-hydroxyvitamin D (25(OH)D) 34.0 nmol/L completed a four months intervention with vitamin D3 20,000 IU per week versus placebo. Mean serum 25(OH)D increased to 89.0 nmol/L in the vitamin D group and decreased slightly in the placebo group. A small, but significant, decrease in the bone formation marker procollagen of type 1 amino-terminal propeptide (P1NP) was seen in the vitamin D group as compared to the placebo group (mean delta P1NP -1.2 pg/mL and 1.5 ng/mL, respectively, P < 0.01). No significant effects were seen on serum carboxyl-terminal telopeptide of type 1 collagen (CTX-1), Dickkopf-1, sclerostin, tumor necrosis factor-alpha, osteoprotegerin, receptor activator of nuclear factor ĸB ligand, or leptin. Subgroup analyses on subjects with low baseline serum 25(OH)D did not yield additional, significant results. In subjects with high baseline serum parathyroid hormone (PTH) > 6.5 pmol/L and post-intervention decrease in PTH, the decrease in P1NP was more pronounced, they also exhibited significantly reduced serum CTX-1 and increased serum sclerostin. In conclusion, supplementation with vitamin D appears to suppress bone turnover, possibly mediated by PTH reduction. Our findings need to be confirmed in even larger cohorts with vitamin D insufficient subjects.
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Affiliation(s)
- Rolf Jorde
- Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT, The Arctic University of Norway, 9038 Tromsø, Norway; Division of Internal Medicine, University Hospital of North Norway, 9038 Tromsø, Norway.
| | - Astrid Kamilla Stunes
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Clinic of Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway.
| | - Julia Kubiak
- Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT, The Arctic University of Norway, 9038 Tromsø, Norway.
| | - Ragnar Joakimsen
- Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT, The Arctic University of Norway, 9038 Tromsø, Norway; Division of Internal Medicine, University Hospital of North Norway, 9038 Tromsø, Norway.
| | - Guri Grimnes
- Tromsø Endocrine Research Group, Department of Clinical Medicine, UiT, The Arctic University of Norway, 9038 Tromsø, Norway; Division of Internal Medicine, University Hospital of North Norway, 9038 Tromsø, Norway.
| | - Per Medbøe Thorsby
- Hormone Laboratory, Department of Medical Biochemistry, Oslo University Hospital, Aker Hospital, Oslo, Norway.
| | - Unni Syversen
- Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; Department of Endocrinology, Clinic of Medicine, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway.
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19
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Makariou SE, Elisaf M, Challa A, Tellis CC, Tselepis AD, Liberopoulos EN. No effect of vitamin D administration plus dietary intervention on emerging cardiovascular risk factors in patients with metabolic syndrome. JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2019. [DOI: 10.1016/j.jnim.2019.100093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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20
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Mousa A, Naderpoor N, Wilson K, Plebanski M, de Courten MPJ, Scragg R, de Courten B. Vitamin D supplementation increases adipokine concentrations in overweight or obese adults. Eur J Nutr 2019; 59:195-204. [PMID: 30649593 DOI: 10.1007/s00394-019-01899-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 01/08/2019] [Indexed: 01/26/2023]
Abstract
PURPOSE Vitamin D regulates adipokine production in vitro; however, clinical trials have been inconclusive. We conducted secondary analyses of a randomized controlled trial to examine whether vitamin D supplementation improves adipokine concentrations in overweight/obese and vitamin D-deficient adults. METHODS Sixty-five individuals with a BMI ≥ 25 kg/m2 and 25-hydroxyvitamin D (25(OH)D) ≤ 50 nmol/L were randomized to oral cholecalciferol (100,000 IU single bolus followed by 4,000 IU daily) or matching placebo for 16 weeks. We measured BMI, waist-to-hip ratio, % body fat (dual X-ray absorptiometry), serum 25(OH)D (chemiluminescent immunoassay) and total adiponectin, leptin, resistin, and adipsin concentrations (multiplex assay; flow cytometry). Sun exposure, physical activity, and diet were assessed using questionnaires. RESULTS Fifty-four participants completed the study (35M/19F; mean age = 31.9 ± 8.5 years; BMI = 30.9 ± 4.4 kg/m2). After 16 weeks, vitamin D supplementation increased 25(OH)D concentrations compared with placebo (57.0 ± 21.3 versus 1.9 ± 15.1 nmol/L, p < 0.001). There were no differences between groups for changes in adiponectin, leptin, resistin, or adipsin in unadjusted analyses (all p > 0.05). After adjustment for baseline values, season, sun exposure, and dietary vitamin D intake, there was a greater increase in adiponectin (β[95%CI] = 13.7[2.0, 25.5], p = 0.02) and leptin (β[95%CI] = 22.3[3.8, 40.9], p = 0.02) in the vitamin D group compared with placebo. Results remained significant after additional adjustment for age, sex, and % body fat (p < 0.02). CONCLUSIONS Vitamin D may increase adiponectin and leptin concentrations in overweight/obese and vitamin D-deficient adults. Further studies are needed to clarify the molecular interactions between vitamin D and adipokines and the clinical implications of these interactions in the context of obesity. CLINICAL TRIAL REGISTRATION clinicaltrials.gov: NCT02112721.
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Affiliation(s)
- Aya Mousa
- Monash Centre for Health Research and Implementation (MCHRI), School of Public Health and Preventive Medicine, Monash University, Level 1, 43-51 Kanooka Grove, Clayton, Melbourne, VIC, 3168, Australia
| | - Negar Naderpoor
- Monash Centre for Health Research and Implementation (MCHRI), School of Public Health and Preventive Medicine, Monash University, Level 1, 43-51 Kanooka Grove, Clayton, Melbourne, VIC, 3168, Australia
| | - Kirsty Wilson
- Department of Immunology and Pathology, Monash University, 89 Commercial Road, Melbourne, VIC, 3004, Australia
| | - Magdalena Plebanski
- Department of Immunology and Pathology, Monash University, 89 Commercial Road, Melbourne, VIC, 3004, Australia
- School of Health and Biomedical Sciences, RMIT University, 124 La Trobe St, Melbourne, VIC, 3000, Australia
| | - Maximilian P J de Courten
- Centre for Chronic Disease, Victoria University, 176 Furlong Road, St Albans, Melbourne, VIC, 3021, Australia
| | - Robert Scragg
- School of Population Health, University of Auckland, 261 Morrin Road, Glen Innes, Auckland, 1072, New Zealand
| | - Barbora de Courten
- Monash Centre for Health Research and Implementation (MCHRI), School of Public Health and Preventive Medicine, Monash University, Level 1, 43-51 Kanooka Grove, Clayton, Melbourne, VIC, 3168, Australia.
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21
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Longitudinal association of 25-hydroxyvitamin D with adipokines and markers of glucose metabolism among Brazilian pregnant women. Br J Nutr 2018; 121:42-54. [DOI: 10.1017/s0007114518003057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
AbstractThis study aimed to evaluate the longitudinal association of vitamin D status with glycaemia, insulin, homoeostatic model assessment of insulin resistance, adiponectin and leptin. A prospective cohort with 181 healthy, pregnant Brazilian women was followed at the 5th–13th, 20th–26th and 30th–36th gestational weeks. In this cohort, 25-hydroxyvitamin D (25(OH)D) plasma concentrations were analysed using liquid chromatography–tandem MS. Vitamin D status was categorised as sufficient or insufficient using the Endocrine Society Practice Guidelines (≥75/<75 nmol/l) and the Institute of Medicine (≥50/<50 nmol/l) thresholds. Linear mixed-effect regression models were employed to evaluate the association between vitamin D status and each outcome, considering interaction terms between vitamin D status and gestational age (P<0·1). At baseline, 70·7 % of pregnant women had 25(OH)D levels <75 nmol/l and 16 % had levels <50 nmol/l. Women with sufficient vitamin D status at baseline, using both thresholds, presented lower glycaemia than those with insufficient 25(OH)D. Pregnant women with 25(OH)D concentrations <75 nmol/l showed lower insulin (β=−0·12; 95 % CI −0·251, 0·009;P=0·069) and adiponectin (β=−0·070; 95 % CI −0·150, 0·010;P=0·085) concentrations throughout pregnancy than those with 25(OH)D levels ≥75 nmol/l. Pregnant women with 25(OH)D <50 nmol/l at baseline presented significantly higher leptin concentrations than those with 25(OH)D levels ≥50 nmol/l (β=−0·253; 95 % CI −0·044, 0·550;P=0·095). The baseline status of vitamin D influences the biomarkers involved in glucose metabolism. Vitamin D-sufficient women at baseline had higher increases in insulin and adiponectin changes throughout gestation than those who were insufficient.
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Ng SY, Bettany-Saltikov J, Cheung IYK, Chan KKY. The Role of Vitamin D in the Pathogenesis of Adolescent Idiopathic Scoliosis. Asian Spine J 2018; 12:1127-1145. [PMID: 30322242 PMCID: PMC6284127 DOI: 10.31616/asj.2018.12.6.1127] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 05/22/2018] [Indexed: 12/20/2022] Open
Abstract
Several theories have been proposed to explain the etiology of adolescent idiopathic scoliosis (AIS) until present. However, limited data are available regarding the impact of vitamin D insufficiency or deficiency on scoliosis. Previous studies have shown that vitamin D deficiency and insufficiency are prevalent in adolescents, including AIS patients. A series of studies conducted in Hong Kong have shown that as many as 30% of these patients have osteopenia. The 25-hydroxyvitamin D3 level has been found to positively correlate with bone mineral density (BMD) in healthy adolescents and negatively with Cobb angle in AIS patients; therefore, vitamin D deficiency is believed to play a role in AIS pathogenesis. This study attempts to review the relevant literature on AIS etiology to examine the association of vitamin D and various current theories. Our review suggested that vitamin D deficiency is associated with several current etiological theories of AIS. We postulate that vitamin D deficiency and/or insufficiency affects AIS development by its effect on the regulation of fibrosis, postural control, and BMD. Subclinical deficiency of vitamin K2, a fat-soluble vitamin, is also prevalent in adolescents; therefore, it is possible that the high prevalence of vitamin D deficiency is related to decreased fat intake. Further studies are required to elucidate the possible role of vitamin D in the pathogenesis and clinical management of AIS.
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Archontogeorgis K, Nena E, Papanas N, Steiropoulos P. The role of vitamin D in obstructive sleep apnoea syndrome. Breathe (Sheff) 2018; 14:206-215. [PMID: 30186518 PMCID: PMC6118887 DOI: 10.1183/20734735.000618] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Obstructive sleep apnoea syndrome (OSAS) is a common disorder of multifactorial pathogenesis and is associated with obesity, diabetes and cardiovascular disease. Vitamin D is a fat-soluble vitamin with an important function in calcium absorption and homeostasis, which is also implicated in several nonskeletal conditions. The prevalence of vitamin D deficiency is increasing worldwide and is associated with similar metabolic disturbances to OSAS. Moreover, recent data suggest that in OSAS patients serum levels of vitamin D are lower compared with non-apnoeic subjects. However, the mechanisms linking vitamin D deficiency and OSAS are not completely understood and several hypotheses have been advanced. To date, a limited number of studies have assessed the association between lower serum concentrations of vitamin D and OSAS, and have reported inconsistent results. Similarly, contradictory results have been produced by studies which evaluated the effect of continuous positive airway pressure treatment on serum vitamin D levels. The aim of this review is to summarise current knowledge on the association between OSAS and vitamin D levels. Due to multiple confounding factors, vitamin D deficiency is common among sleep apnoea patients; thus, screening should be performed when clinically indicatedhttp://ow.ly/L3ow30krmol
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Affiliation(s)
- Kostas Archontogeorgis
- M.Sc. Program "Sleep Medicine", Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Evangelia Nena
- Laboratory of Hygiene and Environmental Protection, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Nikolaos Papanas
- Second Dept of Internal Medicine, Medical School, Democritus University of Thrace, Alexandroupolis, Greece
| | - Paschalis Steiropoulos
- M.Sc. Program "Sleep Medicine", Medical School, Democritus University of Thrace, Alexandroupolis, Greece
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24
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Agudelo-Zapata Y, Maldonado-Acosta LM, Sandoval-Alzate HF, Poveda NE, Garcés MF, Cortés-Vásquez JA, Linares-Vaca AF, Mancera-Rodríguez CA, Perea-Ariza SA, Ramírez-Iriarte KY, Castro-Saldarriaga CA, Arteaga-Diaz JM, Franco-Vega R, Ángel-Müller E, Parada-Baños AJ, Caminos JE. Serum 25-hydroxyvitamin D levels throughout pregnancy: a longitudinal study in healthy and preeclamptic pregnant women. Endocr Connect 2018; 7:698-707. [PMID: 29666170 PMCID: PMC5952242 DOI: 10.1530/ec-18-0055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Accepted: 04/17/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Worldwide there is a high prevalence of 25-hydroxyvitamin D (25OHD) deficiency and has been associated with adverse outcomes during pregnancy. OBJECTIVE This is a nested, case-control study in a longitudinal cohort to compare the serum 25OHD levels and other biomarkers throughout pregnancy in a group of 20 preeclamptic women and 61 healthy pregnant women. An additional group of 29 healthy non-pregnant women were also studied during the two phases of the menstrual cycle. RESULTS Mean 25OHD levels in non-pregnant women were 31.9 ng/mL and 34.9 ng/mL during follicular and luteal phase, respectively (P < 0.01). Mean serum 25OHD levels in healthy pregnant women were 26.5, 30.1 and 31.9 ng/mL, at first, second and third trimester, respectively (P < 0.001). The first trimester levels of 25OHD were lower than those of healthy non-pregnant women (P < 0.001), showing a significant recovery at third trimester. In the group of healthy pregnant women, the 25OHD levels were 25.7 ng/mL and 27.2 ng/mL at 3 and 6 months postpartum, respectively; both values were lower than those observed in the non-pregnant women (P < 0.001). In preeclamptic women, 25OHD serum levels were similar to those of healthy pregnant women; nevertheless, they remained almost unchanged throughout pregnancy. CONCLUSION There were no significant differences between healthy and preeclamptic pregnant women in terms of 25OHD levels throughout the pregnancy. Serum 25OHD levels in non-pregnant women were higher during luteal phase compared with follicular phase. The 25OHD levels of non-pregnant women tended to be higher than those of pregnant women.
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Affiliation(s)
- Yessica Agudelo-Zapata
- Division of EndocrinologyDepartment of Internal Medicine, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Luis Miguel Maldonado-Acosta
- Division of EndocrinologyDepartment of Internal Medicine, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | | | - Natalia Elvira Poveda
- Department of PhysiologySchool of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - María Fernanda Garcés
- Department of PhysiologySchool of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | | | | | | | | | | | | | - Juan Manuel Arteaga-Diaz
- Division of EndocrinologyDepartment of Internal Medicine, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Roberto Franco-Vega
- Division of EndocrinologyDepartment of Internal Medicine, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Edith Ángel-Müller
- Department of Obstetrics and GynecologySchool of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Arturo José Parada-Baños
- Department of Obstetrics and GynecologySchool of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Jorge E Caminos
- Department of PhysiologySchool of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
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Mousa A, Naderpoor N, Teede H, Scragg R, de Courten B. Vitamin D supplementation for improvement of chronic low-grade inflammation in patients with type 2 diabetes: a systematic review and meta-analysis of randomized controlled trials. Nutr Rev 2018; 76:380-394. [DOI: 10.1093/nutrit/nux077] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Aya Mousa
- Monash Centre for Health Research and Implementation, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Negar Naderpoor
- Monash Centre for Health Research and Implementation, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Helena Teede
- Monash Centre for Health Research and Implementation, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - Robert Scragg
- School of Population Health, University of Auckland, Auckland, New Zealand
| | - Barbora de Courten
- Monash Centre for Health Research and Implementation, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
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26
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25-Hydroxyvitamin D and Peripheral Immune Mediators: Results from Two Nationwide Danish Pediatric Cohorts. Nutrients 2017; 9:nu9040365. [PMID: 28383493 PMCID: PMC5409704 DOI: 10.3390/nu9040365] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 03/31/2017] [Accepted: 04/01/2017] [Indexed: 11/17/2022] Open
Abstract
(1) Background: We aimed to examine if 25-hydroxyvitamin D (25(OH)D) was related to the peripheral immunological and inflammatory signature both at birth, and in newly diagnosed patients with childhood type 1 diabetes (T1D) and their healthy controls; (2) Methods: The birth cohort consisted of 470 patients and 500 healthy controls. Dried blood samples were collected from the neonates in the period 1981–1999. The newly diagnosed cohort consisted of 460 patients and 453 siblings. Serum samples were collected in the period 1997–2005. A variety of peripheral immune mediators were measured and compared to total 25(OH)D levels (25(OH)D2 + 25(OH)D3). For each immune mediator, the relative change (RC) in the mean level was modeled by robust log-normal regression and correction for multiple testing was performed; (3) Results: Two associations were identified; there was a negative association between 25(OH)D (10 nmol/L increase) and leptin (RC (95% confidence interval (CI)), 0.98 (0.96; 1.00)), and a positive association between 25(OH)D (10 nmol/L increase) and the chemokine, chemokine (c-x-c motif) ligand (CXCL) 8 (RC (95% CI), 1.07 (1.01; 1.13)); (4) Conclusion: CXCL8 and leptin have significant associations with levels of 25(OH)D in the newly diagnosed cohort. These results do not indicate a strong influence of 25(OH)D on the peripheral immunological or inflammatory signature.
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