scholarly journals Severe vitamin D deficiency is a risk factor for renal hyperfiltration

2018 ◽  
Vol 108 (6) ◽  
pp. 1342-1351 ◽  
Author(s):  
Jong Hyun Jhee ◽  
Ki Heon Nam ◽  
Seong Yeong An ◽  
Min-Uk Cha ◽  
Misol Lee ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Vitamin D ◽  
Risk Factor ◽  
Glomerular Filtration Rate ◽  
Vitamin D Deficiency ◽  
Filtration Rate ◽  
Estimated Glomerular Filtration Rate ◽  
Hydroxyvitamin D ◽  
Severe Vitamin ◽  
25 Hydroxyvitamin D

ABSTRACT Background Vitamin D deficiency is associated with renal progression in chronic kidney disease. Moreover, improvement of clinical outcomes after vitamin D supplementation has been reported in the diabetic and chronic kidney disease population. Objective We investigated the association between renal hyperfiltration (RHF) and vitamin D status in a relatively healthy population. Design Data were retrieved from the Korean NHANES, a nationwide population-based cross-sectional study from 2008 to 2015. Overall, 33,210 subjects with normal renal function were included in the final analysis. Severe vitamin D deficiency was defined as serum 25-hydroxyvitamin D concentration <10 ng/mL. RHF was defined as estimated glomerular filtration rate with residual in the >95th percentile after adjustment for age, sex, height, weight, and history of hypertension or diabetes. Results The mean ± SD age of subjects was 48.1 ± 15.9 y, and the number of women was 18,779 (56.5%). Estimated glomerular filtration rate was negatively associated with serum 25-hydroxyvitamin D concentrations in multivariable linear regression analysis (β: −0.02; 95% CI: −0.02, −0.01; P < 0.001). Furthermore, 1637 (4.9%) subjects were categorized into the RHF group, and the prevalence of RHF was significantly higher in the severe vitamin D deficiency group than in the sufficiency group (5.8% compared with 5.0%, P < 0.001). In a multivariable logistic regression model, severe vitamin D deficiency was a significant risk factor for RHF (OR: 2.41; 95% CI, 1.72, 3.43; P < 0.001). Conclusions Severe vitamin D deficiency is significantly associated with increasing prevalence of RHF in a relatively healthy adult population.

scholarly journals Epidemiology of the association between serum 25-hydroxyvitamin D levels and musculoskeletal conditions among elderly individuals: a literature review

2020 ◽  
Vol 39 (1) ◽  
Author(s):  
Kazuhiko Arima ◽  
Satoshi Mizukami ◽  
Takayuki Nishimura ◽  
Yoshihito Tomita ◽  
Hiroki Nakashima ◽  
...  
Keyword(s):  
Older Adults ◽  
Vitamin D ◽  
Risk Factor ◽  
Vitamin D Deficiency ◽  
Muscle Weakness ◽  
Elderly Individuals ◽  
Musculoskeletal Conditions ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
Osteoporosis Fracture

Abstract Background Vitamin D deficiency is associated with osteoporosis, fracture, muscle weakness, falls, and osteoarthritis in adults. Elderly individuals are more likely to present with poor musculoskeletal conditions. Recently, several epidemiological studies have assessed the correlation between serum 25-hydroxyvitamin D (25(OH)D) levels and musculoskeletal conditions in elderly individuals. Main text Osteoporosis is a skeletal disease characterized by low bone mass and microarchitectural deterioration of bone tissue, with a consequent increase in bone fragility and susceptibility to fracture. Numerous studies have shown a positive association between serum 25(OH)D levels and bone mineral density. Only a few studies have reported an association between serum 25(OH)D levels and quantitative ultrasound (QUS) parameters. Low serum 25(OH)D level may be a risk factor for hip fracture. However, data on the association between vitamin D deficiency and the incidence of non-hip fracture are contrasting. Falls are a major cause of mortality and morbidity in older adults. Several prospective population-based cohort studies have shown that low 25(OH)D levels are associated with an increased risk of falls. Reduced muscle strength and physical performance are risk factors for adverse events, including disability, institutionalization, and mortality. The role of vitamin D in musculoskeletal functionality (muscle weakness and physical performance) among elderly individuals is still controversial. Osteoarthritis (OA) is the most common form of arthritis and is a leading cause of disability among older adults. Data on the association between serum 25(OH)D levels and OA are contrasting. Conclusion Some studies have shown that vitamin D deficiency may be a risk factor for poor musculoskeletal conditions, such as osteoporosis, fracture, muscle weakness, falls, and osteoarthritis in adults. However, other studies did not find an association between serum 25(OH)D levels and musculoskeletal conditions.

scholarly journals Vitamin D deficiency is associated with inflammatory cytokine concentrations in patients with diabetic foot infection

2014 ◽  
Vol 112 (12) ◽  
pp. 1938-1943 ◽  
Author(s):  
Shalbha Tiwari ◽  
Daliparthy Devi Pratyush ◽  
Sanjeev Kumar Gupta ◽  
Surya Kumar Singh
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Diabetic Foot ◽  
Inflammatory Cytokine ◽  
Diabetic Foot Infection ◽  
Hydroxyvitamin D ◽  
Severe Vitamin ◽  
Tnf Α ◽  
25 Hydroxyvitamin D ◽  
Ifn Γ

Vitamin D has been recognised as a potent immunomodulator and its deficiency is common in different population groups including patients with diabetic foot infection. Diabetic foot infection reflects the altered immune status of the host. As cytokine regulation plays a significant role in infection and wound-healing processes, the present study aimed to evaluate the association between vitamin D status and inflammatory cytokine profiles in patients with diabetic foot infection. The serum concentrations of vitamin D (25-hydroxyvitamin D), IL-1β, IL-6, TNF-α and interferon-γ (IFN-γ) were measured in 112 diabetic foot infection cases and 109 diabetic controls. Severe vitamin D deficiency (25-hydroxyvitamin D concentration < 25 nmol/l) was more common in cases than in controls (48·2v.20·5 %). Although age, duration of diabetes, HbA1C(glycosylated Hb) concentration and BMI were similar, cases had significantly higher concentrations of IL-6 (P≤ 0·001), IL-1β (P≤ 0·02) and TNF-α (P≤ 0·006) than controls. A significant negative correlation was also observed between 25-hydroxyvitamin D concentration and circulating concentrations of IL-1β (r− 0·323;P≤ 0·001) as well as IL-6 (r− 0·154;P≤ 0·04), but not between 25-hydroxyvitamin D and TNF-α and IFN-γ concentrations. Furthermore, a significant difference in IL-1β (P≤ 0·007) and IL-6 (P≤ 0·02) concentrations was observed in patients with severe 25-hydroxyvitamin D deficiency compared with patients with 25-hydroxyvitamin D concentration ≥ 25 nmol/l, and this difference was remarkable for TNF-α. In conclusion, severe vitamin D deficiency is associated with elevated inflammatory cytokine concentrations in diabetic patients, particularly in those with foot infection. A 25-hydroxyvitamin D concentration value < 25 nmol/l is suggested as the ‘cut-off’ for such immunological alterations in patients with diabetes mellitus.

In COVID-19 patients, low 25-hydroxyvitamin D level in serum is associated with longer viral clearance time and higher risk of intensive care unit admission

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Jameela Al-Salman ◽  
Sarah Alghareeb ◽  
Eman Alarab ◽  
Haitham Jahrami ◽  
William B. Grant
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Viral Clearance ◽  
Clearance Time ◽  
Rt Pcr ◽  
Content Type ◽  
Hydroxyvitamin D ◽  
Severe Vitamin ◽  
25 Hydroxyvitamin D ◽  
Age And Sex

Purpose This study aims to investigate the association between vitamin D measured in serum 25 hydroxyvitamin D [25(OH)D] and outcomes of COVID-19 patients in Bahrain. This paper hypothesized that lower serum 25(OH)D concentration in COVID 19 patients is associated with longer viral clearance time (VCT) and higher risk of admission to the intensive care unit (ICU). Design/methodology/approach This study used a retrospective cohort design of patients admitted to Salmaniya Medical Complex, Manama, Kingdom of Bahrain, from February to June 2020. This study included patients with positive, confirmed COVID-19 diagnosis made using reverse transcription-polymerase chain reaction (RT-PCR), World Health Organization diagnosis manual and local diagnostic guidelines. Primary outcome measures were: VCT measured as the time in days between the first positive RT-PCR test result and the first of two consecutive negative RT-PCR results on recovery and admission need to ICU. Findings A total of 450 patients were analyzed; mean age was 46.4 ± 12.4 years and 349 (78%) were men. Mean 25(OH)D concentration was 41.7 ± 23.7 nmol/L for the entire sample. Severe vitamin D deficiency (<25 nmol/L) was present in 20%, mild-to-moderate deficiency (25–50 nmol/L) in 55%, insufficiency (50 to <75 nmol/L) in 18% and sufficiency (=75 nmol/L) in 7%. The mean VCT was 12.9 ± 8.2 days. Multivariate linear regression analysis showed that severe vitamin D deficiency was associated with longer VCT, with an average of three extra days after correction for age and sex (β = 3.1; p = 0.001). Multinomial regression analysis showed that vitamin D deficiency was associated with an 83% increased risk of admission to ICU after correction for age and sex (odds ratio = 1.8; p = 0.03). Originality/value The results showed that severe vitamin D deficiency was associated with longer recovery time from COVID-19. Low serum 25(OH)D is associated with increased need for critical care in an ICU. Large-scale randomized controlled trials are necessary to further investigate the complex association between vitamin D and COVID-19 infection.

scholarly journals Association of Serum 25-Hydroxyvitamin D Deficiency with Risk of Incidence of Disability in Basic Activities of Daily Living in Adults >50 Years of Age

2020 ◽  
Vol 150 (11) ◽  
pp. 2977-2984
Author(s):  
Mariane M Luiz ◽  
Roberta Máximo ◽  
Dayane C Oliveira ◽  
Paula C Ramírez ◽  
Aline F de Souza ◽  
...  
Keyword(s):  
Vitamin D ◽  
Risk Factor ◽  
Activities Of Daily Living ◽  
Vitamin D Deficiency ◽  
Daily Living ◽  
Clinical Characteristics ◽  
Hydroxyvitamin D ◽  
Increased Risk ◽  
25 Hydroxyvitamin D

ABSTRACT Background Vitamin D deficiency compromises muscle function and is related to the etiology of several clinical conditions that can contribute to the development of disability. However, there are few epidemiological studies investigating the association between vitamin D deficiency and the incidence of disability. Objectives We aimed to assess whether vitamin D deficiency is associated with the incidence of disability in basic activities of daily living (BADL) and to verify whether there are sex differences in this association. Methods A 4-y follow-up study was conducted involving individuals aged 50 y or older who participated in ELSA (English Longitudinal Study of Ageing). The sample consisted of 4814 participants free of disability at baseline according to the modified Katz Index. Vitamin D was assessed by serum 25-hydroxyvitamin D [25(OH)D] concentrations and the participants were classified as sufficient (&gt;50 nmol/L), insufficient (&gt;30 to ≤50 nmol/L), or deficient (≤30 nmol/L). Sociodemographic, behavioral, and clinical characteristics were also investigated. BADL were re-evaluated after 2 and 4 y of follow-up. The report of any difficulty to perform ≥1 BADL was considered as an incident case of disability. Poisson models stratified by sex and controlled for sociodemographic, behavioral, and clinical characteristics were carried out. Results After 4-y follow-up, deficient serum 25(OH)D was a risk factor for the incidence of BADL disability in both women (IRR: 1.53; 95% CI: 1.16, 2.03) and men (IRR: 1.44; 95% CI: 1.02, 2.02). However, insufficient serum 25(OH)D was not a risk factor for the incidence of BADL disability in either men or women. Conclusions Independently of sex, deficient serum 25(OH)D concentrations were associated with increased risk of incidence of BADL disability in adults &gt;50 y old and should be an additional target of clinical strategies to prevent disability in these populations.

scholarly journals 25-Hydroxyvitamin D deficiency is a risk factor for atherosclerotic cardiovascular disease: a prospective study

2021 ◽  
Author(s):  
Shan Su ◽  
Liting Wang ◽  
Xulei Tang ◽  
Nan Zhao ◽  
Conghui Guan ◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Vitamin D ◽  
Risk Factor ◽  
Glucose Metabolism ◽  
Vitamin D Deficiency ◽  
Atherosclerotic Cardiovascular Disease ◽  
Hydroxyvitamin D ◽  
25 Hydroxyvitamin D ◽  
Ascvd Risk

Abstract Background Vitamin D, a fat-soluble vitamin, play a protective role in the cardiovascular system. Increasing evidence has suggested that the vitamin D deficiency is a significant risk factor for atherosclerotic cardiovascular disease (ASCVD). The aim of the present study was to investigate the correlation between serum 25-hydroxyvitamin D[25(OH)D] and the risk of ASCVD in Chinese, especially in people with type 2 diabetes mellitus(T2DM). Methods Based on the "REACTION" study conducted in 2011, 9014 residents aged 40 to 75 in Lanzhou, Gansu province were followed up from 2014 to 2016. A total of 7061 subjects with complete data from the two surveys in present study were analyzed. Baseline population was classified into four groups based on 25(OH)D quartiles, comparing the different 25(OH)D groups of ASCVD incidence after follow-up, multivariate Cox proportional hazards regression modelling was used to estimate associations between 25(OH)D levels and the risk of ASCVD and to further analyze the relationship between ASCVD risk and 25(OH)D levels in different glucose metabolism status. Results Among 7,061 subjects aged 40 to 75 years, the median serum 25(OH)D level was 15.91ng/ml, and the prevalence of vitamin D deficiency was 75.1%, merely 2.0% of those with vitamin D sufficiency. During the follow-up period of 3.3 years, 216 cases of ASCVD events were recorded. The cumulative incidence of ASCVD from lowest of 25(OH)D levels to the highest were 4.1%, 3.0%, 3.1% and 2.0%, respectively. Cox regression analysis indicated that the individuals in quartile 1 but not quartile 2 or 3 of 25(OH)D level had significantly higher rate of ASCVD than that in highest quartile, additionally, 10 ng/ml per increase in serum 25(OH)D at baseline, the ASCVD risk was reduced by 24%[hazard ratio(HR):0.761, 95% confident interval(CI):0.590- 0.980, P <0.05]. When the effects of 25(OH)D on ASCVD risk was assessed in different glucose metabolism status, the results showed that the low 25(OH)D plus T2DM was associated with high risk of ASCVD after adjustment of confounding risk factors (HR: 2.284, 95% CI: 1.242-4.202, P <0.05).The risk of ASCVD decreased by 35% as serum 25(OH)D increased by 10 ng/ml, which remained significant after stepwise adjustments ( P <0.05). Conclusions Serum 25(OH)D is independently and inversely associated with the risk of ASCVD in Chinese.Increasing vitamin D levels can effectively reduce the risk of ASCVD incidence, especially in T2DM populations.

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