Abstract
Vitamin A derivatives such as retinoic acid may improve the impaired balance of CD4+ T cells in autoimmune and inflammatory diseases. This study is a double-blind randomized trial to evaluate the effect of vitamin A (as form of retinyl palmitate) supplementation on multiple sclerosis (MS) patients. Thirty-nine patients were enrolled and randomly assigned to two groups. Both groups were followed for 6 months. The experimental group received 25,000 IU of retinyl palmitate daily, while the control group received a placebo. Before and after the study, the expression of interferon gamma (IFN-γ) and T-bet genes was evaluated in peripheral blood mononuclear cells of patients by RT-PCR. The results showed that after 6 months of supplementation, expression of IFN-γ and T-bet was significantly decreased. These data suggest that retinyl palmitate supplementation can modulate the impaired balance of Th1 and Th2 cells and vitamin A products that may be involved in the therapeutic mechanism of vitamin A in MS patients. This study provides information regarding the decreased gene expression of IFN-γ and T-bet in MS by retinyl palmitate supplementation.
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Acknowledgments
This work was supported by health services grants including the School of Nutritional Science and Dietetics and the Iranian Center for Neurological Research (ID: 10033). It was registered according to the appropriate clinical trial registration system (NCT01225289).
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Mohammadzadeh Honarvar, N., Harirchian, M.H., Abdolahi, M. et al. Retinyl Palmitate Supplementation Modulates T-bet and Interferon Gamma Gene Expression in Multiple Sclerosis Patients. J Mol Neurosci 59, 360–365 (2016). https://doi.org/10.1007/s12031-016-0747-2
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DOI: https://doi.org/10.1007/s12031-016-0747-2