نتایج جستجو برای: vitamin d measurement
تعداد نتایج: 1047478 فیلتر نتایج به سال:
background: it seems that serum vitamin d levels are one of the potential environmental factors affecting the severity of multiple sclerosis (ms). in this study, we aim to evaluate vitamin d levels in ms patients and healthy subjects and assess the relationship between vitamin d level and disability. methods: in this case-control study, 168 rapid relapsing ms patients and 168 matched healthy co...
Assay variability has been cited as an obstacle to establishing optimal vitamin D exposure. As part of the Vitamin D Standardization Program (VDSP) effort to standardize the measurement of total 25-hydroxyvitamin D [25(OH)D], the value assignment of total 25(OH)D in 50 single-donor serum samples was performed using two isotope-dilution LC with tandem MS methods. Both methods are recognized as r...
AIMS To investigate the clinical value and practice of reflective testing, a new term to describe the practice of adding on tests when reporting or clinically authorising results. METHODS A consultant medical biochemist collected over a calendar year (2001) copies of clinical biochemistry reports on samples to which he had added on either iron studies (iron, total iron binding capacity (TIBC)...
Background: Alopecia areata (AA) is a common localized nonscarring hair loss. Vitamin D and such trace elements as zinc have significant immunomodulatory roles and are reduced in many autoimmune diseases. We aim to evaluate the zinc and vitamin D levels in AA patients belonging to an Iranian population. Methods: We randomly recruited 77 patients with AA, and 112 age- and sex-matched normal subj...
Vitamin D resistant rickets with alopecia is a rather rare heritable disease probably caused by a different variety of metabolic disorder of this vitamin. Disturbances of protoplasmic and unclear receptors for vitamin D metabolites in bones and intestinal cells have been proposed as basic mechanism; Alopecia is attributed to hypersensitivity to vitamin D; very much like what usually appears in ...
In this study, the aim was to determine whether adding vitamin D to the standard therapeutic regimen of schizophrenic male patients with inadequate vitamin D status could improve some aspects of the symptom burden or not. This study was an open parallel label randomized clinical trial. Eighty patients with chronic stable schizophrenia with residual symptoms and Vitamin D deficiency were recruit...
Background: The percentage of elderly people is growing in our country. Aging is associated with multiple diseases, disabilities and heavy medical expenses. The new multi-functionalProtein, Klotho, not only reduces the aging process but also affects several diseases associated with older ages.The aim of this study was to evaluate the effect of vitamin D supplements on the plasma levels of kloth...
BACKGROUND Rapid, easy and reliable measurement of the major vitamin D metabolites is required in order to fulfill the needs of a clinical routine laboratory. To overcome these challenges, we have developed and validated a LC-MS/MS method for the quantification of 25-hydroxyvitamin D2 and D3, epi-25-hydroxyvitamin D3 and 24,25-dihydroxyvitamin D3. METHODS Sample preparation was based on preci...
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