in a survey of 148 subjects (72 females and 76 males) in 3 villages and one city in isfahan province, plasma vitamin a, hemoglobin concentration and hematocrit were determined in all subjects, and serum iron was measured in 19 persons, in order to investigate the possible relationship between vitamin a and hematopoietic factors. a positive correlation existed between plasma vitamin a and hemogl...

PURPOSE To determine how the retina uses vitamin A for vision, we studied the flux of oral vitamin A into and out of the swine retina. METHODS We administered labeled vitamin A to swine daily for 30 days and measured the percent of the labeled vitamin A to native unlabeled vitamin A in the retinal epithelium, neuroretina, plasma, liver, lung, and kidney. RESULTS We show that during normal v...

Maternal vitamin intake during pregnancy is crucial for pregnancy outcomes and the child's subsequent health. However, there are few valid instruments for assessing vitamin intake that address the effects of nausea and vomiting during pregnancy (NVP). This study aimed to investigate the validity of a FFQ concerning vitamin intake during early and late pregnancy with and without NVP. The partici...

OBJECTIVE To examine the prevalence and risk factors of vitamin deficiencies among older Thai adults. METHODS The cross-sectional study was conducted in four rural communities, one from each of the four main regions of Thailand. In total, 2336 subjects aged 60 years and over were recruited. Anthropometric variables, demographic data, blood glucose and lipid profile, albumin, globulin and bloo...

obesity is one of the health problems in the developing and developed countries. obesity subjects the individuals with metabolic and endocrine disorders. it is obvious that vitamin d deficiency or insufficiency may lead to secondary hyperparathyroidism. thus, obesity increases the risk of vitamin d deficiency. considering the high prevalence of vitamin d deficiency in children and adolescents w...

introduction: multiple sclerosis (ms) is a chronic autoimmune disease with unknown etiology affecting the central nervous system. the prevalence of ms is highest where environmental supplies of vitamin d are lowest. some studies have shown a strong protective effect of vitamin d3 in experimental autoimmune encephalomyelitis (eae) a model of ms. however, it is not known whether vitamin d3 has a ...

results there were no significant differences in baseline characteristics between two groups except serum ast level. complete evr rate at week 12 in the vitamin d group was significantly higher than the controls (100% vs 84.4%; p = 0.023) whereas this figure was not significant when genotypes 1 and 4 or 2 and 3 in the test group were compared to those of the control (100% vs 86.7%; p = 0.19 and...

normal 0 false false false en-us x-none ar-sa background: increased pro-inflammatory factors, metabolic profile and biomarkers of oxidative stress during pregnancy have been associated with development of several complications. to our knowledge, no reports are available indicating the effects of vitamin d supplementation on serum hs-crp, metabolic profile and bio markers of oxidative stress amo...

background and aim: vitamin d has immune-regulatory functions in experimental inflammatory bowel disease (ibd) and vitamin d deficiency is common in ibd patients. the aim of the study was to assess the effectiveness of vitamin d 3 [1,25(oh) 2 d 3 ] treatment in ibd with regard to tumor necrosis factor-alpha (tnf-?) serum level and  clinical disease activity index (cdai). materials and methods: ...

Background: Alzheimer's disease (AD) is a chronic neurodegenerative disease characterized by a progressive decline of cognitive performance, which has a harmful impact on social activities. AD is the main cause of dementia and loss of functional independence in the elderly. AD is a worldwide concern because of its adverse consequences and expanding prevalence and incidence. Vitamin D is the mos...