Changes in Th17 cells function after nanocurcumin use to treat multiple sclerosis

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Abstract

Background:

MS is a chronic inflammatory disease that causes to brain inflammation and Th17 cells are considered to be important in multiple sclerosis pathogenesis. In the current study, we aimed to identify nanocurcumin effects on Th17 cells frequency, cytokines secretion, and expression of transcription factor of patients with relapsing-remitting multiple sclerosis (RRMS).

Methods:

In this study we investigated frequency of Th17 lymphocytes; the expression of transcription factor, associated cytokines and the concentration of them in 35 healthy controls, and from 25 patients at baseline and after 6 months of nanocurcumin treatment and also from 25 patients whose received placebo by flowcytometry, real-time PCR and ELISA, respectively.

Results:

Our analysis revealed that the proportions of Th17 were increased dramatically, along with increases in the levels of IL-17A, IL-23, and RORγt expression in MS patients in compared with healthy control group. Post-treatment evaluation of the nanocurcumin group revealed a significant decrease in Th17 associated parameters such as Th17 frequency (p = 0.029), expression levels of RORγt (p < 0.0001) and IL-17 (p = 0.0044) and also secretion level of IL-17 (p = 0.0011), but IL-23 mRNA expression levels and IL-23 concentration were not influenced by nanocurcumin. However, in the placebo group there is no significant changes in these factors.

Conclusion:

Our study suggests that the increase in proportion of Th17 cells might contribute to the pathogenesis of RRMS. The results of the current work indicated that nanocurcumin is able to restore the dysregulated of Th17 cells in MS patients.

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