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- Title
Vitamin D Increases CTLA-4 Gene Expression in Patients with Mild to Moderate Ulcerative Colitis.
- Authors
Sharifi, Amrollah; Vahedi, Homayoon; Honarvar, Mohammad Reza; Alipoor, Behnam; Nikniaz, Zeinab; Rafiei, Hossein; Hosseinzadeh-Attar, Mohammad Javad
- Abstract
BACKGROUND Ulcerative colitis (UC) is a chronic inflammatory disorder of the large intestine. Cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) is a member of the immunoglobulin superfamily, which binds B7-1 and B7-2 on APCs (antigen-presenting cells), and induces APCs to produce an inhibitory signal to T cells. The aim of this study was to investigate the effect of vitamin D on CTLA-4 gene expression in whole blood samples of patients with UC. METHODS 90 patients with mild to moderate UC were randomized to receive either a single injection of 7.5 mg vitamin D3 or 1 mL normal saline. 90 days following the intervention fold changes in CTLA-4 mRNA expression were determined and statistical comparisons between the two groups were performed. RESULTS Serum vitamin D increased significantly only in the vitamin D group. CTLA-4 fold changes were significantly higher in the vitamin D group compared with the placebo group (median ± IQR: 1.21 ± 2.3 vs. 1.00 ± 1.5, respectively; p = 0.007). CONCLUSION The results of this study revealed that vitamin D administration in patients with UC enhances the CTLA-4 gene expression.
- Subjects
ANTIGENS; GENE expression; MESSENGER RNA; PHYSIOLOGIC salines; ULCERATIVE colitis; VITAMIN D; CHOLECALCIFEROL; RANDOMIZED controlled trials; SEVERITY of illness index
- Publication
Middle East Journal of Digestive Diseases, 2019, Vol 11, Issue 4, p200
- ISSN
2008-5230
- Publication type
Article
- DOI
10.15171/mejdd.2019.149