Vitamin D status in Algerian Behçet's disease patients: an immunomodulatory effect on NO pathway
Abstract
Behçet's disease (BD) is an inflammatory multisystemic disorder associated with orogenital ulcers, uveitis and skin lesions with unpredictable episodes of exacerbations and remissions. Even though several immunological and environmental factors contribute to BD progression, its ethiopathogenesis remains uncertain and elusive. Considered as one of the potent environmental factors that can increase prevalence of some autoimmune and inflammatory disorders, vitamin D deficiency has been linked to several diseases as BD. The aim of this study is to assess vitamin D status in Algerian BD patients and its relationship with disease activity. Immunomodulatory effect of this vitamin on nitric oxide (NO), inflammatory mediator, was also undertaken. Serum 25(OH) vitamin D levels were measured in healthy controls (HC), active and inactive BD patients with an electrochemiluminescence method. After treatment of HCs' and patients' peripheral blood mononuclear cells with different concentrations of vitamin D3, NO production was evaluated with Griess method, while inducible nitric oxide synthase (iNOS) and NF-κB expression with immunofluorescence test. A high decrease of vitamin D levels was noted in active BD patients compared to those of inact...Continue Reading
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