نتایج جستجو برای: 25ohd
تعداد نتایج: 432 فیلتر نتایج به سال:
Values of serum 25-hydroxyvitamin D (25OHD) defined as insufficient or deficient are common in the general community, particularly among the elderly and people with chronic illnesses and reduced skin exposure to sunlight. Ultraviolet B exposure is essential for skin synthesis of vitamin D3 (cholecalciferol), the precursor to 25OHD3 and 1,25-dihydroxyvitaminD (calcitriol). Dietary sources of vit...
سابقه و هدف: درد اندام تحتانی در سالمندان یک عامل مهم اختلال در فعالیت فیزیکی و بروز ناتوانی است. از آنجائیکه ویتامین D در متابولیسم استخوان دخالت دارد، این مطالعه به منظور بررسی ارتباط کمبود ویتامین D با درد و حساسیت استخوان ساق پا در سالمندان انجام شد. مواد و روش‌ها: در این مطالعه مورد-شاهدی بر روی بیمارانی که بعلت درد لوکالیزه سطح قدامی ساق پا بدون علت مشخص به مدت ≥6 هفته و سن ≥50 سال مراجعه...
Vitamin D deficiency, which is usually detected by using immunoassays or the more reliable liquid chromatography tandem mass spectrometry (LC-MS/MS) methods, has recently been considered a public health problem worldwide. However, the vitamin D status in Chinese populations, as measured using the LC-MS/MS method, is not available. The objective of this multicenter study was to determine the vit...
<b><i>Introduction:</i></b> Parathyroid hormone-lowering responses after administration of three different therapies capable raising serum total 25-hydroxyvitamin D (25OHD) were evaluated in patients with secondary hyperparathyroidism (SHPT), vitamin insufficiency (VDI), and stage 3 or 4 chronic kidney disease (CKD). <b><i>Methods:</i></b> Sixty-n...
سابقه و هدف: بین کمبود غلظت سرمی 25 هیدروکسی ویتامین D (25OHD) و فربهی مرکزی ارتباط وجود دارد. هدف این مطالعه بررسی اثر دریافت روزانه دوغ غنی شده با ویتامین D بر شاخص‌های فربهی مرکزی و نقش احتمالی پلی‌مرفیسم Cdx-2 از گیرنده ویتامین D (VDR) بر پاسخ شاخص‌های فربهی به دریافت ویتامین D در افراد مبتلا به دیابت نوع 2 می‌باشد. مواد و روش‌ها: 60 بیمار مبتلا به دیابت نوع 2 به‌طور تصادفی به دو گروه تقسی...
background hypovitaminosis d has been associated with the development of gestational diabetes mellitus (gdm) in many observational studies. objectives we report the first study of the impact of prenatal vitamin d supplementation on postpartum dysglycemia in gdm patients in a randomized clinical trial. patients and methods women with gdm at 12 - 32 weeks of gestation were assigned randomly to ei...
Vitamin D intoxication (VDI) may result from supplementation rarely, but it has been reported more frequently in recent years. This may be attributable to an increase in vitamin D supplement intake due to an understanding of the role of vitamin D (25OHD) in the pathogenesis of several diseases. The symptoms and findings associated with VDI are closely related to serum calcium concentration and ...
Context In older women, the magnitude of elevated parathyroid hormone (PTH) and its consequence is unclear. Objective To describe normal PTH profiles over time and the association with mortality. Design and Participants There were 1044 community-dwelling women in the Malmö Osteoporosis Prospective Risk Assessment cohort (OPRA) who attended baseline (age 75 years). Follow-ups were attended b...
PURPOSE Vitamin D insufficiency is associated with age-related macular degeneration. Our objective was to determine whether low serum 25-hydroxyvitamin D (25OHD) concentration was associated with macular thickness among older adults with no signs of macular dysfunction. METHODS Sixty-two French older community-dwellers with no patent macular dysfunction (mean ± SD, 71.2 ± 5.0 years; 45.2% fem...
The consensus workshop, organised on behalf of the Food Standards Agency, was convened to recommend the most appropriate and secure method for measuring vitamin D status in the UK. Workshop participants (the Expert Panel) were invited on the basis of expertise in current 25-hydroxyvitamin D (25OHD) assays, or expertise in vitamin D nutrition and metabolism or detailed knowledge and experience i...
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