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- W4200544057 abstract "Abstract Background Itaconate plays potent anti-inflammatory effects and has gradually been discovered as a promising drug candidate for treating inflammatory diseases. However, its roles and underlying mechanism on pain remain unknown. Methods In the current work, we investigated the effects and mechanisms of dimethyl itaconate (DI, a derivative of itaconate) in a mouse model of complete Freund's adjuvant (CFA)-induced inflammatory pain. Male/Female C57 BL/6 mice were randomly divided into five groups: a vehicle group, an CFA group ,an CFA+PBS group and an CFA + DI(10mg /d and 20 mg/d) group.DI was performed for 11 consecutive days after CFA models were established.Paw withdrawal frequencies and paw withdrawal latencies were used to Behavioral Tests. The activation of macrophages and microglia, the level of proinflammatory cytokine production, the number of M1/M2 macrophages were evaluated .The possible involvement of the NLRP3/ IL-1β signaling pathway was also investigated. Results DI significantly reduced mechanical allodynia and thermal hyperalgesia, decreased peripheral inflammatory cell infiltration and the expression of pro-inflammatory factors IL-1β and TNF-α, and upregulated anti-inflammatory factor IL-10. Interestingly, DI promoted macrophages at the inflammatory site polarization from M1 into M2 type. Additionally, DI inhibited activation of macrophages in dorsal root ganglion (DRG) and microglia in the spinal cord, exhibiting reduced expressions of pro-inflammatory cytokines. Mechanismly, DI exerts the analgesic action primarily via inhibiting the activation of NLRP3 inflammasome complex and the release of IL-1β in derived and resident macrophages in the hind paw, DRG and spinal cord. Conclusion DI could alleviate the pain-like behavior of CFA mice by inhibiting the infiltration of plantar inflammatory cells and macrophages activation in DRG and microglia in the spinal cord. The analgesic behavior of itaconate was related to the inhibition of NLRP3 inflammasome. This study suggested possible evidence for prospective itaconate utilization in the management of inflammatory pain for the first time." @default.
- W4200544057 created "2021-12-31" @default.
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- W4200544057 date "2021-11-23" @default.
- W4200544057 modified "2023-10-16" @default.
- W4200544057 title "Dimethyl itaconate attenuates CFA-induced inflammatory pain via NLRP3/ IL-1β signaling pathway" @default.
- W4200544057 doi "https://doi.org/10.21203/rs.3.rs-1050454/v1" @default.
- W4200544057 hasPublicationYear "2021" @default.
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