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- W3209111820 abstract "Objective: To study the role of IL-11-secreting monocytes in the pathogenesis of RRMS. Background: We have previously shown that IL-11 is highly upregulated in the CSF of untreated patients with clinically isolated syndrome (CIS), suggestive of its role in the inflammatory response in MS. In this study, we examined the role of monocytes in the IL-11-induced inflammatory response in RR MS. Design/Methods: CD14+ monocytes from 23 untreated RRMS patients and 14 age-, sex- and race-matched HCs were examined by flow cytometry. Anti-IL11 mAb was used in RREAE to determine its therapeutic potential. Results: The frequency of IL-11-secreting CD14+ cells was significantly increased in PBMCs from 14 RRMS patients in comparison to matched HCs (p=0.04). In RRMS patients, CD14+IL-11+ cells are enriched in the CSF as compared to the paired blood samples (p=0.02). In RRMS patients the co-expression of pro-inflammatory IL-23 was significantly higher than the expression of anti-inflammatory cytokine IL-10 in IL-11+CD14+ cells. IL-23+IL-11+CD14+ cells from RRMS patients had a higher CCR2 expression in comparison to HC (p=0.03), suggestive of their potential to migrate to the CNS. In-vitro studies with purified CD14+ cells from RRMS patients showed that IL-11 increases the expression of IL-23 (p=0.01). RREAE experiments showed that anti-IL-11 mAb treatment at the onset of disease (5 mg/kg, i.p, daily for 10 days) decreased the clinical scores in comparison to the isotype control group (n=12/group, p Conclusions: IL-11-secreting monocytes contribute to the inflammatory response in early RRMS. Anti-IL-11 mAb treatment of RREAE ameliorated the clinical disease, in part by inducing regulatory monocyte expansion. Disclosure: Maryamsadat Seyedsadr has nothing to disclose. Soohwa Jang has received personal compensation for serving as an employee of Jefferson University . Daniel Hwang has nothing to disclose. Jian Li has nothing to disclose. Mrs. McGuire has nothing to disclose. Dr. Miskin has nothing to disclose. Silva Markovic-Plese, MD, FAAN has nothing to disclose." @default.
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- W3209111820 date "2021-04-13" @default.
- W3209111820 modified "2023-09-23" @default.
- W3209111820 title "The role of IL-11+ monocytes in relapsing-remitting multiple sclerosis (RRMS) and experimental autoimmune encephalomyelitis (EAE) (4715)" @default.
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