View clinical trials related to Vitamin D Deficiency.
Filter by:Isotretinoin (ISO) has been used in the treatment of patients with severe acne vulgaris (AV) that is resistant to standard therapy with systemic antibiotics and topical agents, over the last few decades. There are various side effects of ISO in the skeletal system. This study investigate the relationship between ISO-induced musculoskeletal adverse effects and serum 25 hydroxy (OH) vitamin D levels in patients with acne vulgaris.
In addition to its effect on maintaining calcium homeostasis and mineralization of bone, vitamin D has been linked to play a pivotal role in different medical conditions including type 2 diabetes mellitus. Vitamin D plays a major role in both insulin secretion and decreasing the insulin resistance hence has a major impact on glucose tolerance. This study is designed to determine the non-skeletal effects of vitamin D in improving the glucose tolerance in type 2 diabetic patients by decreasing the insulin resistance
This randomized controlled trial (RCT) will compare the change in vitamin D status (25-hydroxyvitamin D nmol/L) after a 4 week intervention with 4 groups: 1. Vitamin D enriched (20ug) olive oil emulsion drink 2. Vitamin D enriched (20ug) coconut oil emulsion drink 3. Placebo emulsion drink 4. Vitamin D supplement (20ug) Participants will be randomized to 1 of 4 intervention group. Hypothesis 1: 25-hydroxyvitamin D concentrations are higher in the olive oil emulsion drink group compared to the placebo emulsion drink group post intervention. Hypothesis 2: 25-hydroxyvitamin D concentrations are higher in the olive oil emulsion drink group compared to the coconut oil emulsion drink group post intervention.
Asthma is a disease characterised by chronic inflammation of the airways leading to symptoms including periods of shortness of breath, wheezing and a tight chest due to airway narrowing in affected patients. Current data show that one in 12 adults are currently receiving treatment for asthma in the United Kingdom (UK), with the UK having some of the highest rates in Europe. In the winter, 30-40% of the UK population are vitamin D deficient with some asthma patients having significantly lower vitamin D levels compared to normal patients. Vitamin D has been shown to be involved in the development of immune-related disorders including asthma. Cross-sectional research has shown that reduced vitamin D levels are associated with reduced lung function, increased airway hyper-responsiveness and reduced response to glucocorticoids, suggesting vitamin D levels may also implicate asthma treatment. To date, there have been three randomised controlled trials (RCT) assessing the effect of vitamin D supplementation in adults with symptomatic asthma. These trials have not found a significant effect of vitamin D supplementation on asthma. However, these studies relied on high doses of vitamin D with long time periods between doses. There is a requirement for RCTs in adults with daily supplementation of lower doses of vitamin D as it has been suggested that daily supplementation is more effective for inducing non-classical actions of vitamin D. However, vitamin D has been found to significantly improve airway function as measured by forced expiratory volume in one second (FEV1) in adults supplemented with 100, 000 international units (IU) vitamin D intramuscularly plus 50, 000 IU oral vitamin D weekly. Therefore, the effect of daily dosing on lung function also requires investigation. Furthermore, these trials have focussed on clinical outcomes without investigating the cellular mechanisms affording protection.
An open clinical trial not randomized, multicentric. This study search to evaluate vitamin D supplementation efficacy at high dose (UVEDOSE, colecalciferol, oral solution at 100 000 UI) of vitamin D on day 1 of each cycles for breast cancer treated adjuvant chemotherapy. A calcium supplementation will be prescribed in parallel. An initial dosage of 25OH vitamin D rate will be done and a vitamin-calcic dosage will done on day 1 of every cycles of chemotherapy
Vitamin D has been considered to possess anti-inflammatory and antimicrobial activity which may be a link for the known interaction of Systemic Sclerosis (SSc) and coronary heart disease (CHD). This study investigated the association between serum vitamin D levels and SSc and periodontitis in patients with SSc, CP and with CHD. Furthermore, the objective was to determine if periodontitis and CHD had an impact on serum vitamin D levels.
This study evaluates the influence of vitamin D in reducing laboratory, elastographic (Fibroscan) and metabolic components of NAFLD. Half of the patients will receive vitamin D (Plivit D3) while the other half will receive placebo
This study is a randomised control trial (RCT) pilot study to determine the appropriate vitamin D dose for the main study. The pilot study includes three matched groups, which will form two vitamin D supplementation groups (at 25,000 IU and 50,000 IU every two months), and a third placebo supplementation group. The aim was to develop an appropriate supplementation regimen that was compatible with recruit training and maintained serum vitamin D (25OHD) status above 50 nmol/l during recruit training.
Determinate the level of vitamin D in blood, and evaluate the prevalence of deficit and insufficiency among patients with diagnosis of uterine fibroids
This study is determining the therapeutic effect of Vitamin D supplements to Pcos clomiphene resistant polycystic ovarian syndrome Women. Half of patients will receive Vitamin D with metformin while other half metformin only. Then both groups start clomiphene for 3 month