scholarly journals ASSOCIATION BETWEEN VITAMIN D-BINDING PROTEIN (VDBP) GENE POLYMORPHISM AND VITAMIN D STATUS IN YOUNG CHILDREN

ScienceRise ◽  
2020 ◽  
pp. 51-58
Author(s):  
Mariia Romanko ◽  
Zoia Rossokha ◽  
Iryna Maydan ◽  
Maryna Mamenko ◽  
Lyudmila Kvashnina
Keyword(s):  
Vitamin D ◽  
Young Children ◽  
Gene Polymorphism ◽  
Serum Levels ◽  
Vitamin D Supplementation ◽  
Health Care Facilities ◽  
Vitamin D Status ◽  
Scientific Results ◽  
Vitamin D Supplements ◽  
Technological Product

Object of the research: VDBP gene polymorphism. Problem being addressed: the effect of existing polymorphic variants of the VDBP gene on the absorption of vitamin D in young children. The main scientific results. At the beginning of the survey, vitamin D supplementation was performed in 50.0±9.1 % (15/30) of children. The concentration of 25 (OH) D in the serum of the subjects was 32.9 ng/ml (23.2–60.0). All patients with the GG rs 7041 genotype of the VDBP gene had a concentration of 25 (OH) D in the range of 20-100 ng/ml, which is statistically more common than in children with the AA rs 4588 genotype (p=0.015), GT rs 7041 genotype (p=0.047) and genotype TT rs 7041 (p=0.033). Patients with CA rs 4588 genotypes – 23.7 ng/ml (14.8-35.8) and GT rs 7041 – 28.1 ng/ml (17.1–49) had the lowest serum levels of 25 (OH) D, the highest levels of 25 (OH) D – children with genotype AA rs 4588 – 122.6 ng/ml (23.2–124.1) and genotype TT rs 7041 – 78.6 ng/ml (23.2 –124.1). Carriers of the AA rs 4588 genotype were more likely than patients with the GG rs 7041 genotype to show dangerously high levels of 25 (OH) D (p=0.069). Patients with the AA rs 4588 genotype had lower alkaline phosphatase levels compared to the GT rs 7041 and CC rs 4588 genotypes – 185.0 U/l (147.0–212.0) versus 259.5 U/l (207.0–334.5), p=0.021 and against 251.0 U/l (222.0–346.0), p=0.016. Area of practical application of research results: The results of the study can be used by working groups to make recommendations for the prevention and treatment of vitamin D deficiency and in the practice of health care facilities. Innovative technological product: association between allelic variants of the VDBP gene and vitamin D status in young children. Scope of application of innovative technological product: pediatrics, medical genetics. Conclusions. Genetic variants of VDBP may affect the absorption of vitamin D and cause variability in 25 (OH) D levels, which complicates the development of uniform recommendations for optimal prophylactic doses of vitamin D and necessitates additional research. The highest levels of 25 (OH) D were recorded in children with genotypes AA rs 4588 and TT rs 7041 of the VDBP gene, which showed high absorption when taking vitamin D supplements at a dose of 500 IU and even excessive concentrations of 25 (OH) D with long-term supplementation in higher dose.

scholarly journals Responsibility for vitamin D supplementation of elderly care home residents in England: falling through the gap between medicine and food

2020 ◽  
pp. bmjnph-2020-000129
Author(s):  
Joseph Williams ◽  
Carol Williams
Keyword(s):  
Public Health ◽  
Vitamin D ◽  
Elderly Care ◽  
Care Home ◽  
Vitamin D Supplementation ◽  
Care Homes ◽  
Vitamin D Status ◽  
Structured Interviews ◽  
Medical Responsibility ◽  
Vitamin D Supplements

IntroductionDaily vitamin D supplements are recommended for elderly care home residents; however, they are rarely given and vitamin D deficiency in care homes is widespread. This study aimed to understand the determinants of current practice and perceived responsibility for the vitamin D status of residents.MethodsThirteen semi-structured interviews were conducted with key informants in two areas of Southern England including care home managers, general practitioners (GPs) and public health professionals. Interviews were audio recorded and transcribed verbatim.ResultsInductive thematic analysis identified four themes: framing of vitamin D supplements as medicines; professional and sector boundaries whereby GPs are perceived as responsible for the vitamin D status of residents and care home managers felt unable to administer over-the-counter vitamin tablets; low awareness of national guidance; and ethical and practical issues. This results in vitamin D supplements requiring prescription by medical professionals and few residents receiving them.ConclusionThe medical framing of vitamin D supplements in care homes is a practical barrier to implementation of longstanding nutrition guidelines. A paradigm shift is needed so that vitamin D is understood as a protective nutrient as well as a medicine, and a public health as well as a medical responsibility. Vitamin D is important for musculoskeletal health. Possible links with COVID-19 are still being investigated. The pandemic has drawn attention to conditions in care homes and there is an opportunity to revise current guidance on vitamin D supplementation which will have lasting benefit for this vulnerable group.

scholarly journals Vitamin D Status and Its Seasonal Variations and Association With Parathyroid Hormone Concentration in Healthy Women in Riga

Medicina ◽  
2013 ◽  
Vol 49 (7) ◽  
pp. 51
Author(s):  
Aivars Lejnieks ◽  
Anda Slaidina ◽  
Agnis Zvaigzne ◽  
Una Soboleva ◽  
Gulsena Eivazova ◽  
...  
Keyword(s):  
Vitamin D ◽  
Parathyroid Hormone ◽  
Postmenopausal Women ◽  
Seasonal Variations ◽  
Threshold Level ◽  
Vitamin D Supplementation ◽  
Reproductive Age ◽  
Vitamin D Status ◽  
Healthy Women ◽  
Vitamin D Supplements

The aim of the study was to describe the vitamin D status and its seasonal variations in women living in Riga, Latvia, to examine an association between the concentrations of plasma 25-hydroxyvitamin D [25(OH)D] and parathyroid hormone (PTH), and to determine the threshold for plasma 25(OH)D above which there is no further suppression of PTH. Material and Methods. The data of 189 healthy Caucasian women were analyzed. The serum levels of 25(OH)D, PTH, and phosphorus were measured twice a year. All the participants were divided into 3 groups according to vitamin D supplementation and the reproductive status. Results. The overall mean level of 25(OH)D was 32.8 ng/mL with significantly lower levels being in winter when compared with those in summer (28.2 ng/mL vs. 37.5 ng/mL, respectively; P<0.05). PTH was negatively associated with 25(OH)D. A threshold level of plasma 25(OH)D above which no further suppression of PTH occurred was found to be 38 ng/mL. Postmenopausal women not taking vitamin D supplements and without exposure to sunlight had 25(OH)D deficiency in winter and summer (92% and 88%, respectively). The most significant seasonal fluctuations were seen in the women of the reproductive age not taking vitamin D supplements and without exposure to sunlight, of which 47% had 25(OH)D deficiency in summer and 69% in winter. Conclusions. An optimal concentration of 25(OH)D was found to be 38 ng/mL. According to this definition, 70.4% of all the healthy women were classified as vitamin D deficient in winter and 59.8% in summer. The highest proportion of vitamin D deficient individuals was found in the group representing the postmenopausal women not taking vitamin D supplements.

scholarly journals Putative role of vitamin D in the mechanism of alcoholism and other addictions – a hypothesis

2020 ◽  
pp. 1-8
Author(s):  
Tanya M. Galyuk ◽  
Anton J.M. Loonen
Keyword(s):  
Vitamin D ◽  
Clinical Problem ◽  
Serum Levels ◽  
Vitamin D Supplementation ◽  
Practice Research ◽  
Future Research ◽  
Blood Levels ◽  
Vitamin D Status ◽  
Dopaminergic Transmission

Abstract Objective: Vitamin D deficiency may be a clinical problem in patients with addictions. The authors systematically searched for studies addressing vitamin D and addiction and develop a hypothesis which can direct future research of the possible mechanistic role of vitamin D in the process of addiction. Methods: Systematic review of the literature found in PubMed and EMBASE followed by narrative review combined with clinical experiences leading to hypotheses for future research. Results: Only five articles were identified about a role of vitamin D in the pathophysiology of addiction. Their results are in line with a possible influence of vitamin D in dopaminergic transmission. The cerebral vitamin D status depends on the functionality of genetic variants of vitamin D receptor and other involved genes. Routine serum calcidiol levels may not adequately reflect cerebral vitamin D status. Uncertainty exists regarding appropriate calcidiol blood levels and proper dosages for affecting the central nervous system (CNS). Conclusions: The putative pathophysiological role of vitamin D in substance abuse has been insufficiently studied which calls to more studies how to measure cerebral vitamin D status in clinical practice. Research is indicated whether vitamin D supplementation should use higher dosages and aim to reach higher calcidiol serum levels. Measuring dopaminergic functioning within the prefrontal cortex as reflected by neuropsychological tests selected as suitable could be a appropriate proxy for the cerebral vitamin D status when studying the pharmacogenomics of this functionality in patients.

scholarly journals Responsibility for vitamin D supplementation of elderly care home residents in England: falling through the gap between medicine and food

2020 ◽  
Author(s):  
Joseph Williams ◽  
Carol Williams
Keyword(s):  
Public Health ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Elderly Care ◽  
Care Home ◽  
Vitamin D Supplementation ◽  
Care Homes ◽  
Vitamin D Status ◽  
Vitamin D Levels ◽  
Vitamin D Supplements

AbstractIntroductionVitamin D supplements are recommended for elderly care home residents with little sunlight exposure. However, their use in care homes is limited and vitamin D deficiency in residents is widespread. This study aimed to understand perceived responsibility for the vitamin D status of residents and the determinants of current practice around supplementation.MethodsThirteen semi-structured interviews were conducted with key informants in two areas of Southern England including care home managers, general practitioners (GPs) and public health professionals. Interviews were audio recorded and transcribed verbatim.ResultsInductive thematic analysis identified four themes – medical framing; professional and sector boundaries; awareness of national guidance; and ethical and practical issues. Vitamin D supplements were not routinely given to residents, and most participants, including the GPs, believed the vitamin D status of residents was the responsibility of the GP. Care home managers felt unable to make decisions about vitamin D and vulnerable to suggestions of wrongdoing in administering over-the-counter vitamin tablets. This results in vitamin D requiring prescription by medical professionals and few care home residents receiving vitamin D supplements.ConclusionThe medical framing of vitamin D supplements in care homes is a practical barrier to residents receiving them and is out of step with public health recommendations. Vitamin D levels in care home residents could be improved through universal supplementation. This requires a paradigm shift so that vitamin D is understood as a protective nutrient as well as a medicine, and a public health as well as a medical responsibility. The failure to ensure vitamin D adequacy of residents may emerge as a factor in the spread and severity of COVID-19 in care homes and gives increased urgency to addressing this issue.KEY MESSAGESWhat is already known about the subject?Nutrition guidelines recommend elderly care home residents take vitamin D supplements as a preventative measure. This is rarely implemented in practice and vitamin D inadequacy is widespread.What are the new findings?Medical framing of vitamin D in the care sector puts elderly residents at risk of vitamin D deficiency. Vitamin D supplements are perceived as medicines requiring an individual prescription and diagnosis by a medical professional. This is out of step with public health recommendations. The system’s failure to protect the vitamin D status of the elderly in care homes may have implications in the context of COVID-19.How might these results change the focus of research or practice?Prompt a review of current guidelines and regulations in England to establish responsibility for implementing public health recommendations on vitamin D supplementation in care homes. Further research on feasibility of implementation strategies is needed.

scholarly journals Dyslipidemia and Vitamin D Status in Diabetic Patients

2022 ◽  
Vol 05 (01) ◽  
Author(s):  
Mohammed Sassi ◽  
Keyword(s):  
Vitamin D ◽  
Lipid Profile ◽  
Vitamin D Deficiency ◽  
Elevated Serum ◽  
Female Gender ◽  
Serum Levels ◽  
Vitamin D Supplementation ◽  
Diabetic Patients ◽  
Vitamin D Status ◽  
Cross Sectional

Background: Dyslipidemia is one of the most common metabolic syndrome among diabetic patients due to several factors include insulin insufficiency, resistance, and central obesity. Furthermore both vitamin D deficiency and diabetes are most public health worldwide problems. Therefore the aim of the present work to study the dyslipidemia and vitamin D status in diabetes patients and also to study the relation between vitamin D status and lipid profile in diabetic patients. Methods: A Cross sectional study conducted on randomly selected diabetic patients whether have vitamin D deficiency with dyslipidemia, vitamin D deficiency with no dyslipidemia or dyslipidemia with no vitamin D deficiency. A total sample 165 patients enrolled in the study with serum lipid profile, vitamin D and glycemic control measured at beginning and end of the study. The data analysis was done through Chi-square or T test at α< 0.05. Result: The data collected on 165 patients revealed that, patients aged 41-60 years were most common, and female gender was twice as male. This study include both types of diabetes with vitamin D deficiency and dyslipidemia or vitamin D deficiency with no dyslipidemia or dyslipidemia with not vitamin D deficiency as control. Therefore, the result of this work confirmed that vitamin D deficiency significant implicated in elevated serum levels of TG, TC, LDL, VLDL, FPG and HbA1C (P< 0.05). However, vitamin D deficiency has linked to slight increased serum HDL levels. In compared to man, vitamin D deficiency linked significantly to dyslipidemia and abnormal high levels blood glucose and HbA1C par in women. Conclusion: The present study revealed that, vitamin D deficiency associated negatively with serum levels of TC, TG, VLDL, LDL, FPG and HbA1C whereas the deficiency of vitamin D linked to elevated HDL levels. In gender distribution lower vitamin D values associated with elevated serum FPG, HbA1C, lipid profile with exception HDL in women. The data of this study suggested that, diabetic patients with dyslipidemia may improve their lipid profile and glucose hemostasis through vitamin D supplementation

Vitamin D Deficiency/Insufficiency and Challenges in Developing Global Vitamin D Fortification and Supplementation Policy in Adults

2012 ◽  
Vol 82 (4) ◽  
pp. 237-259 ◽  
Author(s):  
Moshe Ben-Shoshan
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Search Strategy ◽  
Epidemiologic Studies ◽  
Vitamin D Supplementation ◽  
Vitamin D Status ◽  
Societal Burden ◽  
Time Period ◽  
New Guidelines ◽  
In Cis

This review summarizes studies discussing vitamin D status in adults and reveals that vitamin D deficiency/insufficiency is highly prevalent in adults and that current fortification and supplementation policies are inadequate. Background and aims: Studies suggest a crucial role for adequate vitamin D status in various health conditions including bone metabolism, cancer, cardiovascular diseases, and allergies. However, relatively little is known about poor vitamin D status and unmet needs in adults. This report aims to highlight the contribution of epidemiologic studies (through the identification of health effects and societal burden) to the development of vitamin D fortification and supplementation policies and reveal unmet global challenges in adults. Methods: In order to assess worldwide vitamin D status in adults, the search strategy combined the medical literature database MEDLINE (using PubMed) for the time period between January 1, 1980 and February 28, 2011, using the key words “vitamin D” “deficiency” and “insufficiency”, and included articles in which access to full text was possible and in which healthy adults were assessed according to one of four commonly used vitamin D threshold classifications. Results: This report reveals that vitamin D deficiency occurs in 4.10 % [95 % CI (confidence interval), 3.93 %, 4.27 %] to 55.05 % (54.07 %, 56.03 %) of adults, while insufficiency occurs in 26.07 % (24.82 %, 27.33 %) to 78.50 % (77.85 %, 79.16 %), depending on the classification used. However, lack of overlap in CIs and high value of I2 statistics indicate considerable heterogeneity between studies. Further, certain populations (i. e. dark-skinned individuals, immigrants, and pregnant women) may be at higher risk for poor vitamin D status. Conclusion: Current policies for vitamin D supplementation and fortification are inadequate and new guidelines are required to improve vitamin D status in adults.

Vitamin D Supplementation and Serum Levels of Magne-sium and Selenium in Type 2 Diabetes Mellitus Patients: Gender Dimorphic Changes

2014 ◽  
Vol 84 (1-2) ◽  
pp. 27-34 ◽  
Author(s):  
Nasser M. Al-Daghri ◽  
Khalid M. Alkharfy ◽  
Nasiruddin Khan ◽  
Hanan A. Alfawaz ◽  
Abdulrahman S. Al-Ajlan ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Vitamin D ◽  
Type 2 Diabetes Mellitus ◽  
Serum Levels ◽  
Vitamin D Supplementation ◽  
Serum Selenium ◽  
Dependent Manner

The aim of our study was to evaluate the effects of vitamin D supplementation on circulating levels of magnesium and selenium in patients with type 2 diabetes mellitus (T2DM). A total of 126 adult Saudi patients (55 men and 71 women, mean age 53.6 ± 10.7 years) with controlled T2DM were randomly recruited for the study. All subjects were given vitamin D3 tablets (2000 IU/day) for six months. Follow-up mean concentrations of serum 25-hydroxyvitamin D [25-(OH) vitamin D] significantly increased in both men (34.1 ± 12.4 to 57.8 ± 17.0 nmol/L) and women (35.7 ± 13.5 to 60.1 ± 18.5 nmol/L, p < 0.001), while levels of parathyroid hormone (PTH) decreased significantly in both men (1.6 ± 0.17 to 0.96 ± 0.10 pmol/L, p = 0.003) and women (1.6 ± 0.17 to 1.0 ± 0.14 pmol/L, p = 0.02). In addition, there was a significant increase in serum levels of selenium and magnesium in men and women (p-values < 0.001 and 0.04, respectively) after follow-up. In women, a significant correlation was observed between delta change (variables at six months-variable at baseline) of serum magnesium versus high-density lipoprotein (HDL)-cholesterol (r = 0.36, p = 0.006) and fasting glucose (r = - 0.33, p = 0.01). In men, there was a significant correlation between serum selenium and triglycerides (r = 0.32, p = 0.04). Vitamin D supplementation improves serum concentrations of magnesium and selenium in a gender-dependent manner, which in turn could affect several cardiometabolic parameters such as glucose and lipids.

scholarly journals Does vitamin D supplementation prevent SARS-CoV-2 infection in military personnel? Review of the evidence

2021 ◽  
pp. bmjmilitary-2020-001686
Author(s):  
Iain T Parsons ◽  
R M Gifford ◽  
M J Stacey ◽  
L E Lamb ◽  
M K O'Shea ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Supplementation ◽  
Vitamin D Status ◽  
Military Studies ◽  
Vitamin D Receptors ◽  
Area Of Interest ◽  
Military Populations ◽  
Tract Infections ◽  
Recruit Training

For most individuals residing in Northwestern Europe, maintaining replete vitamin D status throughout the year is unlikely without vitamin D supplementation and deficiency remains common. Military studies have investigated the association with vitamin D status, and subsequent supplementation, with the risk of stress fractures particularly during recruit training. The expression of nuclear vitamin D receptors and vitamin D metabolic enzymes in immune cells additionally provides a rationale for the potential role of vitamin D in maintaining immune homeostasis. One particular area of interest has been in the prevention of acute respiratory tract infections (ARTIs). The aims of this review were to consider the evidence of vitamin D supplementation in military populations in the prevention of ARTIs, including SARS-CoV-2 infection and consequent COVID-19 illness. The occupational/organisational importance of reducing transmission of SARS-CoV-2, especially where infected young adults may be asymptomatic, presymptomatic or paucisymptomatic, is also discussed.

scholarly journals Bone mineral density at age 7 years does not associate with adherence to vitamin D supplementation guidelines in infancy or vitamin D status in pregnancy and childhood: An Odense Child Cohort study

2021 ◽  
pp. 1-33
Author(s):  
Signe Monrad Nørgaard ◽  
Christine Dalgård ◽  
Malene Søborg Heidemann ◽  
Anders Jørgen Schou ◽  
Henrik Thybo Christesen
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Bone Mineral ◽  
Vitamin D Supplementation ◽  
Vitamin D Status ◽  
Mineral Density ◽  
Mineral Concentration ◽  
High Adherence ◽  
Bone Mineralisation ◽  
In Pregnancy

Abstract Vitamin D supplementation in infancy is recommended to prevent rickets. At the population level, its effects on bone mineralisation are largely unknown. We aimed to explore whether adherence to national vitamin D supplementation guidelines (10 µg/day up to age 2 years), supplementation at ages 5 and 7 years, and serum 25-hydroxyvitamin D (s-25(OH)D) at various time points associated with bone mineral density (BMD) at age 7 years in the Odense Child Cohort, Denmark (n=1,194). High adherence was defined as supplementation with 10 µg vitamin D 6-7 times per week during ≥ 80 % of the observation time. S-25(OH)D was analysed using liquid chromatography-tandem mass spectrometry. Total-body-less-head (TBLH) BMD was measured by dual-energy X-ray absorptiometry. At median age 18.1 months, 53.9 % (n=475/881) reported high adherence. The median s-25(OH)D was 64.7, 78.8, 46.0, and 71.8 nmol/l in early pregnancy, late pregnancy, cord blood, and at 5 years, respectively. The mean (SD) TBLH BMD at median age 7.1 years was 0.613 (0.049) g/cm2 (z-score +0.363 (0.824)). In adjusted analyses, vitamin D supplementation up to 18 months, and at 5 and 7 years, was not associated with TBLH BMD. Similarly, no robust associations were found between TBLH BMD and s-25(OH)D at any time point. No associations were found for TBLH bone mineral concentration or bone area. In this population with relatively high s-25(OH)D concentrations, no consistent associations were found between adherence to vitamin D supplementation recommendations or vitamin D status in pregnancy or childhood, and bone mineralisation at age 7 years.

Association of vitamin D with incident glaucoma: findings from the Women’s Health Initiative

2021 ◽  
pp. jim-2020-001645
Author(s):  
Laura D Carbone ◽  
Karen Johnson ◽  
Joseph C Larson ◽  
Fridtjof Thomas ◽  
Jean Wactawski-Wende ◽  
...  
Keyword(s):  
Vitamin D ◽  
Women's Health ◽  
Postmenopausal Women ◽  
Serum Levels ◽  
Dietary Vitamin ◽  
Health Initiative ◽  
Vitamin D Intake ◽  
Vitamin D Supplements ◽  
Dietary Vitamin D ◽  
The Women’S Health Initiative

The relationship between vitamin D and glaucoma is controversial. The objective of this study was to examine women from the Women’s Health Initiative (WHI) to determine if there is an association between vitamin D and incident glaucoma in postmenopausal women. We examined the association between dietary vitamin D intake, vitamin D supplements and serum 25 hydroxyvitamin D (25(OH)D) levels and the risk of developing glaucoma. 143,389 postmenopausal women from the WHI including a subset with serum 25(OH) D measurements were examined to determine the association of dietary, supplemental and serum levels of vitamin D to the development of glaucoma. Dietary intakes of vitamin D, use of vitamin D supplements and serum levels of 25(OH) D were predictors examined for the main outcome of incident glaucoma. In multivariable models adjusted for demographic, clinical variables and medication use, dietary vitamin D, vitamin D supplements, total vitamin D intake (diet plus supplements) and serum 25 (OH) D measurements were not significantly associated with incident glaucoma. In the CaD placebo-controlled intervention clinical trial, there was also no association in the active intervention arm with glaucoma. We conclude that dietary vitamin D intake, supplements and serum levels are not significantly related to the risk of developing glaucoma in postmenopausal women.

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