Active clinical trials for "Vitamin D Deficiency"

Our objective is to demonstrate that providing supplemental vitamin D to children with new onset DM will significantly decrease the levels of HbA1c and insulin requirement by the following methods. Identify how often vitamin D levels are low in patients with new onset Type 1 diabetes mellitus (DM). Record the hemoglobin A1c (HbA1c) level (which reflects the average blood sugar level over the past few months) and document insulin requirements before and after vitamin supplementation is given. Hypothesis: Maintaining vitamin D levels >30 ng/ml will decrease HbA1c and insulin requirements.

Vitamin D is important to maintain good health. Although it is found in foods and vitamins, many people still have low vitamin D levels. One purpose of this study is to describe vitamin D levels from patients at the University of Colorado Seniors Clinic. Another goal of the study is to find out if education by a pharmacist can increase vitamin D levels in patients who have low vitamin D levels.

Parkinson's disease (PD) is the second most frequently appearing neurodegenerative disease. It is a progressive disease of the central nervous system (CNS) and affects around 1% of people over 60 years old. During the progression decline of substantia nigra and deficits of dopamine are observed. The diagnosis is usually based on the motor symptoms such as resting tremor, bradykinesia, muscle stiffness, and postural instability. Common intercurrent symptoms are psychiatric problems like depression or dementia (1). Pharmacotherapy, for example, L-dopa or deep brain stimulation (DBS) are usually used to reduce the motor symptoms (2). From many years the influence of insufficient vitamin D3 levels in human is investigated. In recent publications it was proved that the deficiency of vitamin D3 may lead to generation of reactive oxygen species that influence negatively on mitochondria. That may lead to increased muscle atrophy (3,4). Deficiency of vitamin D3 may be also connected with depression, dementia or the progression of neurodegenerative diseases (5). Moreover, recently studies proved that PD patients have low concentration of serum vitamin D3 (5), increased serum homocysteine (6) and abnormalities in kynurenine pathway (7). It has beed proved that many forms of physical activity in PD patients improves mobility, static and dynamic balance but also may reduce the non-motor symptoms (8,9).

Objective: The aim of the present study was to determine the effect of nursing interventions and sunlight exposure to reach optimum vitamin D levels by individuals living in nursing homes on vitamin D levels. Material Method: In the first stage of this two-stage randomized-controlled experimental study with pretest-posttest design conducted in June - August 2018 period in the nursing home in Central Town of Tokat Province, the questionnaire prepared by the researcher, standardized mini mental test, Fitzpatrick skin typing questionnaire and Katz Index of activities of daily living were applied. Intervention (n=20) and control (n=20) groups were established with individuals using simple random method according to age, gender, skin type and vitamin D level. In the second stage, 30-35% of the body surface area of individuals in the intervention group was exposed to sunlight five days a week in July. For the participants in the control group, sunbathing was not offered. 25(OH)D, calcium, parathormone, phosphorus, alkaline phosphatase and albumin levels of all individuals were measured in blood samples taken at the beginning and end of the study. Two-way mixed ANOVA, Mann-Whitney U test, Wilcoxon signed rank test and Chi-square tests were used to evaluate the data.

Decreased immunity in individuals causes a decrease in vaccine response, and vitamin D worsens this course. Vitamin D is thought to be a vitamin that can strengthen the innate immune response, inhibit the adaptive system, and modulate the vaccine response. The effect of vitamin D intake on antibodies was studied.

Vitamin D deficiency is common in the general population in the United States, but is more common in overweight and obese children. Additionally, vitamin D levels are inversely correlated with body mass index, hypertension, inflammatory markers and insulin resistance. There are currently no clear guidelines regarding vitamin D replacement in obese but otherwise healthy children. The Endocrine Society recommends that children with vitamin D deficiency should take 2000 IU once a day for at least 6 weeks; however, they state that obese children may need 2-3 times this dose in order to reach sufficient levels. The goals of this study are: To determine the prevalence of vitamin D sufficiency (>30 ng/mL), insufficiency (21-29 ng/mL); deficiency (10-19 ng/mL) and severe vitamin D deficiency (<10 ng/dL) in an obese pediatric population (2-11 years) as measured by 25-hydroxyvitamin D. To determine if vitamin D level correlates with percentage body fat by bioelectrical impedance analysis and/or visceral fat by waist circumference in children ages 5 - 11 years. To observe the effect of vitamin D replacement in obese children with vitamin D deficiency using two different replacement dosage levels recommended by the Endocrine Society over three months: 2000 IU once a day (general pediatric dose) vs 6000 IU once a day (suggested obesity dose) in children between the ages of 5 - 11 years. To measure vitamin D levels, bone markers, inflammatory markers and vitamin D binding protein before and after vitamin D supplementation in children between the ages of 5 - 11 years. Analysis will be stratified by degree of obesity (Class I, Class II, Class III) and season.

This study will examine the effect of providing a structured program of daily nutritional supplements for a 8 weeks of intervention prior to Sleeve Gastrectomy bariatric surgery on bone mass density status and formation of critical nutritional deficiencies years after the surgery.

Vitamin D deficiency is wide spread in South Asian population and is contributing to burden of disease in this region including Pakistan. The relative importance of vitamin D deficiency, mutation in its receptor and maternal and child health has not been established in Pakistan and population based studies are required to explore and avert the maternal and Neonatal complications and consequences of Vitamin D deficiency The trial will evaluate the effectiveness of Vitamin D supplementation to pregnant women and their Infants. It will be a double blind placebo controlled trial, which will be conducted in a rural district of Pakistan.

Research Title: The effect of vitamin D replacement on airway reactivity, allergy and inflammatory mediators in exhaled breath condensate in vitamin D deficient asthmatic children. Introduction: Vitamin D seems to play a role in allergic and asthmatic reactions as an immunomodulator. Asthma disease involves inflammatory process in the lower respiratory tract and airway hyperreactivity. Aim: To assess the effect of Vitamin D replacement on airway reactivity, and allergy and inflammatory mediators in exhaled breath condensate in vitamin D deficient asthmatic children. Design: Double blind placebo control prospective study comparing the effect of Vitamin D replacement and placebo on airway reactivity, allergy and inflammatory mediators in exhaled breath condensate in asthmatic pediatric population with vitamin D deficiency. Participant selection: The study group will consist of pediatric patients (age 6-18 years) followed and treated at the Pediatric Pulmonary Unit at the investigators hospital. Patients with mild-moderate asthma with low or insufficient vitamin D levels that are currently not receiving anti-inflammatory treatment will be recruited. Sample size: 60 participants in the two groups (30 receiving Vitamin D and 30 receiving placebo). Intervention: Vitamin D (14000 units) or placebo will be provided in a similar appearance preparation once weekly for 6 weeks between visit two and three. Three visits will be conducted. Each subject will undergo evaluation including a respiratory questionnaire (visit 1), methacholine challenge test with determination of PC20 (visit 1 or 2 and visit 3), exhaled nitric oxide (eNO) (visit 2, 3), and exhaled breath condensate (EBC) (visit 2,3). Venous blood will be analyzed for complete blood count + eosinophils (visit 1, 3), IGE levels (visit 1, 3), and Vitamin D levels (visit 1, 3). Prick skin test for inhaled allergens will be performed (visit 2, 3). Primary end point: Airway reactivity as assessed by methacholine challenge test. Secondary outcome parameters: All other parameters are the secondary end points.

Hypothesis: Volunteers with vitamin D insufficiency (serum 25(OH)D 25-50 nmol/L) given intermediate or high dose vitamin D supplements (2,000 or 5,000 IU per day) will have increased production of anti-bacterial peptides and interleukin-1, decreased production of other pro-inflammatory cytokines, increased production of regulatory cytokines and an enhanced T- and B-cell response to a tetanus vaccine compared to vitamin D insufficient subjects given low dose vitamin D supplements (400 IU per day).