Vitamin D levels are associated with metabolic syndrome in adolescents and young adults: The BCAMS study

2019 ◽  
Vol 38 (5) ◽  
pp. 2161-2167 ◽  
Author(s):  
Junling Fu ◽  
Lanwen Han ◽  
Yanglu Zhao ◽  
Ge Li ◽  
Yingna Zhu ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Vitamin D ◽  
Young Adults ◽  
Adolescents And Young Adults ◽  
Vitamin D Levels

Determinants of Vitamin D Levels in Children, Adolescents, and Young Adults with Juvenile Idiopathic Arthritis

2014 ◽  
Vol 41 (9) ◽  
pp. 1884-1892 ◽  
Author(s):  
Stefano Stagi ◽  
Federico Bertini ◽  
Loredana Cavalli ◽  
Marco Matucci-Cerinic ◽  
Maria L. Brandi ◽  
...  
Keyword(s):  
Vitamin D ◽  
Young Adults ◽  
Juvenile Idiopathic Arthritis ◽  
Severe Disease ◽  
Adolescents And Young Adults ◽  
Control Group ◽  
Bone Mineral Apparent Density ◽  
Vitamin D Levels ◽  
Frequent Relapses ◽  
Active Disease

Objective.Deficiency of 25-hydroxyvitamin D [25(OH)D] is reported to be common in patients with rheumatoid arthritis (RA); data in patients with juvenile idiopathic arthritis (JIA) are inconsistent. We assessed serum 25(OH)D in children, adolescents and young adults with JIA, in order to identify the risk factors for vitamin D deficiency in patients with JIA.Methods.We evaluated 152 patients with JIA: 115 female, 37 male, mean age 16.2 ± 7.4 yrs; evaluated by onset type, 96 had oligoarticular, 35 polyarticular, 7 systemic, and 14 enthesitis-related arthritis (ERA). Patients were compared with a control group matched for sex and age. All patients and controls underwent laboratory tests of plasma 25(OH)D, parathyroid hormone (PTH), calcium, phosphorus, and bone alkaline phosphatase levels, and dual-energy x-ray absorptiometry examination.Results.Patients with JIA showed significantly reduced 25(OH)D levels compared to controls (p < 0.001), even divided into subtypes (oligoarticular, p < 0.05; polyarticular, p < 0.005; systemic, p < 0.001; ERA, p < 0.005). Patients with active disease and/or frequent relapses had significantly reduced 25(OH)D levels compared to patients with no active disease and no frequent flares (p < 0.005, respectively). Nevertheless, JIA patients had significantly higher PTH levels compared to controls (p < 0.0001). JIA patients with 25(OH)D deficiency showed a significantly lower bone mineral apparent density than those with normal 25(OH)D levels (p < 0.001).Conclusion.JIA patients have reduced 25(OH)D and higher PTH values. This may explain at least in part why JIA patients, despite more effective current drugs, do not achieve bone-normal condition over time. JIA patients with more severe disease could require higher supplementation of vitamin D to maintain normal 25(OH)D serum levels. Longterm studies are needed to investigate the relationship between serum 25(OH)D levels and disease activity in JIA.

Vitamin D Levels Correlate with Metabolic Syndrome Criteria in Algerian Patients: The Ex-vivo Immunomodulatory Effect of α, 25 Dihydroxyvitamin D3

2020 ◽  
Vol 20 (8) ◽  
pp. 1282-1294
Author(s):  
Meroua Bouchemal ◽  
Djennat Hakem ◽  
Malha Azzouz ◽  
Chafia Touil-Boukoffa ◽  
Dalila Mezioug
Keyword(s):  
Metabolic Syndrome ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Active Metabolite ◽  
Mononuclear Cells ◽  
Ex Vivo ◽  
No Production ◽  
Immunomodulatory Effects ◽  
Immune Balance ◽  
Vitamin D Levels

Background: Metabolic syndrome (MetS) is a combination of metabolic disorders with increased risks for several diseases, such as cardiovascular diseases and diabetes. It is associated with the presence of various inflammatory molecules. Vitamin D plays an important role in the regulation of metabolism homeostasis. Objective: The main goal of this work is to investigate vitamin D levels among Algerian MetS patients and its possible outcomes on key molecules of the immune response, as well, the immunomodulatory effects of its active metabolite. Methods: We evaluated vitamin D status by the electrochemiluminescence method, Nitric Oxide (NO) levels by the Griess method and Matrix Metalloproteinases (MMPs) activities such as MMP-2 and MMP-9 by zymography in plasma of patients and healthy controls (HC). The immunomodulatory effects of the active metabolite of vitamin D (α-25 (OH)2D3) on the production of NO, IL-6, IL-10, TGF- β and s-CTLA-4 were assessed by Griess method and ELISA, in peripheral blood mononuclear cells (PBMCs) of Algerian MetS patients and HC. MMPs activities were also determined ex-vivo, while iNOS expression was assessed by immunofluorescence staining. Results: Severe vitamin D deficiency was registered in Algerian MetS patients. The deficiency was found to be associated with an elevated in vivo NO production and high MMPs activity. Interestingly, α-25 (OH)2D3 declined the NO/iNOS system and IL-6 production, as well as MMPs activities. However, the ex-vivo production of IL-10, TGF-β increased in response to the treatment. We observed in the same way, the implication of s-CTLA-4 in MetS, which was markedly up-regulated with α-25 (OH)2D3. Conclusion: Our report indicated the relationship between MetS factors and Vitamin D deficiency. The ex-vivo findings emphasize its impact on maintaining regulated immune balance.

scholarly journals Vitamin D Status and Components of Metabolic Syndrome in Older Subjects from Northern Finland (Latitude 65°North)

Nutrients ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 1229 ◽  
Author(s):  
Shivaprakash Jagalur Mutt ◽  
Jari Jokelainen ◽  
Sylvain Sebert ◽  
Juha Auvinen ◽  
Marjo-Riitta Järvelin ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Vitamin D ◽  
Dietary Habits ◽  
Lifestyle Factors ◽  
Vitamin D Status ◽  
Endocrine Society ◽  
Northern Latitudes ◽  
Increased Risk ◽  
Vitamin D Levels ◽  
Older Subjects

Introduction: Vitamin D deficiency has been linked to the increased risk of several chronic diseases, especially in people living in the Northern Latitudes. The aim of this study was to assess the vitamin D status in older subjects born in 1945 in Northern Finland (latitude 65°North), and to examine its associations to components of metabolic syndrome (MetS). Methods: In this cross-sectional study, we invited 904 subjects born in 1945 from the Oulu region (Oulu45 cohort), out of an original cohort of 1332 subjects. In the cohort, plasma 25 hydroxyvitamin D (25OHD) levels were determined by an enzyme immunoassay of 263 men and 373 women, with a mean age baseline of 69±0.5 years old. We assessed the participants’ usage of vitamin D supplements, as well as their lifestyle factors, using a questionnaire. Results: Nearly 80% of the subjects had low vitamin D levels [either vitamin D deficient (<50 nmol/L) or insufficient (50 – 75 nmol/L)], and only 20% of the participants had sufficient vitamin D levels (>75 nmol/L) (based on the American Endocrine Society guidelines). The low vitamin D status was associated with a high prevalence of MetS; a significantly higher number of subjects with MetS (41%) had low vitamin D levels in comparison to the non-MetS subjects (38%) (p ≤ 0.05). The subjects under vitamin D supplementation had a significantly lower incidence of MetS (42.6% vs 57.4%) and its components in comparison to the non-supplemented subjects (p ≤ 0.05). Conclusions: Low vitamin D levels are a risk factor for MetS amongst other lifestyle factors, such as dietary habits and physical inactivity, among older subjects in the Northern Latitudes (65°North). Optimal supplementation of vitamin D, along with rich dietary sources of vitamin D, are highly recommended for older subjects as a means to positively affect, e.g., hypertension, insulin resistance, and obesity, as components of the MetS.

scholarly journals Vitamin D status in adolescents and young adults with HIV infection

2006 ◽  
Vol 83 (5) ◽  
pp. 1135-1141 ◽  
Author(s):  
Charles B Stephensen ◽  
Grace S Marquis ◽  
Laurie A Kruzich ◽  
Steven D Douglas ◽  
Grace M Aldrovandi ◽  
...  
Keyword(s):  
Vitamin D ◽  
Young Adults ◽  
Hiv Infection ◽  
Adolescents And Young Adults ◽  
Vitamin D Status

scholarly journals Association of 25-hydroxyvitamin D with cardiometabolic risk factors and metabolic syndrome: a mendelian randomization study

2019 ◽  
Vol 18 (1) ◽  
Author(s):  
Chi Chen ◽  
Yi Chen ◽  
Pan Weng ◽  
Fangzhen Xia ◽  
Qin Li ◽  
...  
Keyword(s):  
Risk Factors ◽  
Metabolic Syndrome ◽  
Vitamin D ◽  
Cardiometabolic Risk ◽  
Mendelian Randomization ◽  
Cardiometabolic Risk Factors ◽  
Metabolic Traits ◽  
Increased Risk ◽  
Vitamin D Levels ◽  
Genetically Determined

Abstract Background Low circulating vitamin D levels have been associated with increased risk of metabolic syndrome (MS) and cardiometabolic risk factors in multiple epidemiology studies. However, whether this association is causal is still unclear. We aimed to test whether genetically lowered vitamin D levels were associated with MS and its metabolic traits, using mendelian randomization (MR) methodology. Methods Ten thousand six hundred fifty-five participants were enrolled from the SPECT-China study, which was performed in 23 sites in East China during 2014 to 2016. Using four single-nucleotide polymorphisms (SNPs) in the DHCR7, CYP2R1, GC and CYP24A1 genes with known effects on 25(OH) D concentrations, we created a genetic risk score (GRS) as instrumental variable (IV) to estimate the effect of genetically lowered 25(OH) D on MS and cardiometabolic risk factors. MS was defined according to the International Diabetes Federation criteria. Results Lower measured 25(OH)D levels were associated with MS (OR 0.921, 95% CI 0.888, 0.954) after multivariable adjustment. However, the MR-derived odds ratio of genetically determined 25(OH) D for risk of MS was 0.977 (95% CI 0.966, 1.030). The MR-derived estimates for raised fasting plasma glucose was 0.578 (95% CI 0.321, 0.980) per 10 nmol/L GRSsynthesis determined increase of 25(OH) D levels. Conclusions We found no evidence that genetically determined reduction in 25(OH)D conferred an increased risk of MS and its metabolic traits. However, we created our GRS only on the basis of common variants, which represent limited amount of variance in 25(OH)D. MR studies using rare variants, and large-scale well-designed RCTs about the effect of vitamin D supplementation on MS are warranted to further validate the findings.

scholarly journals Role of Vitamin D in Cardiometabolic Diseases

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Chaoxun Wang
Keyword(s):  
Metabolic Syndrome ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Vascular Inflammation ◽  
Left Ventricular ◽  
Bone Diseases ◽  
The Body ◽  
Cvd Risk ◽  
Increased Risk ◽  
Vitamin D Levels

Vitamin D deficiency is a highly prevalent condition. Low vitamin D levels have long been associated with bone diseases, such as rickets in children and osteomalacia and osteoporosis in adults. However, it has become apparent in recent years that adequate vitamin D levels are also important for optimal functioning of many organs and tissues throughout the body, including the cardiovascular system. Evolving data indicate that vitamin D deficiency is associated with an increased risk of cardiovascular disease (CVD). Studies have shown that low vitamin D levels are associated with hypertension, diabetes, metabolic syndrome, left ventricular hypertrophy, and chronic vascular inflammation, all of which are risk factors for CVD. This paper reviews the definition and pathophysiology of vitamin D deficiency, clinical evidence linking vitamin D and CVD risk, diabetes and its complications, and metabolic syndrome.

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