Active clinical trials for "Vitamin D Deficiency"

It is widely known that vitamin D has an important role in calcium metabolism and bone mineralization. Its deficiency is related to rickets and osteomalacia in children and adults respectively. Vitamin D had a role in innate and acquired immunity. It increases innate defense and modulates lymphocytes activation, leading to a change toward a T2 helper response ). The role of vitamin D deficiency on the risk of bacterial infection among patients in intensive care units has been reported. An observational studies in children reported an association between low 25-OH vitamin D level and infectious viral diseases . The deranged metabolism of vitamin D in liver cirrhosis was first reported in the late '70s and was attributed mainly to impaired 25(OH)-vitamin D hydroxylation of the precursor vitamin D caused by impaired liver function. Low level of vitamin D was found independently to be associated with increased risk of bacterial infections in patients with liver cirrhosis. The observed relationship between the lack of vitamin D and the increase risk of mortality in cirrhotic patients could be attributed to bacterial infections. Thus, the association of low vitamin D levels with liver insufficiency and infections supports the use of vitamin D as a prognostic marker in the population of cirrhosis. Studies on the role of vitamin D as a risk factor for infections in patients with liver cirrhosis are not well studied in our locality(Upper Egypt).

To detect the effect of vitamin D deficiency in the development of early childhood caries (ECC) among Egyptian children.

The investigators intend to assess the role of several biomarkers in the prediction of relapse in IBD. Clinical, laboratory and endoscopic data will be gathered and a predictive score will be derived in order to assess the relapse risk at 1 year.

vitamin D may have multiple functions, one of them is modulating reproductive processes and the reproductive role of vitamin D is highlighted by expression of the vitamin D receptors in testis, male reproductive tract and sperms

Assessment of correlation between vitamin D level and prevalence of preterm births remains limited. The exact role of vitamin D in preterm birth has not yet been clearly defined ,where some studies showed vitamin D deficiency increased the risk of preterm birth while other studies found no correlation. In this study will try to continue research on this subject.

Does vitamin D is more deficient in women with unexplained infertility than in fertile pregnant women or not?

The purpose of this study is to isolate genotype-specific DBP/Gc from homozygous human volunteers and use these purified proteins to cross-validate existing or novel assays for this serum protein and to evaluate the binding characteristics of these variants of DBP/Gc for different vitamin D metabolites.