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- W2897760136 abstract "To elucidate the immunomodulatory effects of dimethyl fumarate (DMF) on B cells in patients with relapsing MS receiving DMF as a 1st-line vs 2nd-line therapy.B cells were isolated from 43 patients with MS at baseline and after 15-week DMF therapy. Phenotype and functional markers and cytokine profile were assessed by flow cytometry. Analysis included clinical and MRI parameters recorded during a 1-year follow-up.1st-line and 2nd-line patients presented several differences in their baseline immune profile, which corresponded with differences in their immunologic response to DMF treatment. DMF reduced the proportions of B cells and CD8 T cells whereas increased monocytes. DMF reduced memory B cells, including plasma cells in 2nd-line patients only, whereas strongly increased transitional B cells. Several IL10+ B-cell subsets and TGFβ+ B cells were increased. Proinflammatory LTα+ and TNFα+ B cells were reduced, while IL4+ B cells elevated, whereas IFNγ+ B cells showed opposite effects in 1st-line and 2nd-line patients. HLA and ICAM-1 expression was increased, but % CD86+ B cells reduced. The expression of B-cell activating factor receptor and the proportion of activated CD69 B cells were increased.DMF is associated with increased transitional and IL10+ and TGFβ+ regulatory B cells and a shift toward a more anti-inflammatory immune profile. Cell activation with reduced costimulatory capacity may induce immune hyporesponsiveness. Carryover effects of preceding therapies in 2nd-line patients and the stage of disease influence the immune profile of the patients and the immunomodulatory effects of DMF." @default.
- W2897760136 created "2018-10-26" @default.
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- W2897760136 date "2018-10-16" @default.
- W2897760136 modified "2023-10-18" @default.
- W2897760136 title "Dimethyl fumarate as a first- vs second-line therapy in MS" @default.
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- W2897760136 doi "https://doi.org/10.1212/nxi.0000000000000508" @default.
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