Rea regulates microglial polarization and attenuates neuronal apoptosis via inhibition of the NF‐κB and MAPK signalings for spinal cord injury repair

Journal of Cellular and Molecular Medicine - Tập 25 Số 3 - Trang 1371-1382 - 2021
Shining Xiao1, Chenggui Wang1, Quanming Yang1, Haibin Xu1, Jinwei Lu1, Kan Xu1
1Department of Orthopedic Surgery, School of Medicine, The Second Affiliated Hospital, Zhejiang University, Hangzhou, China

Tóm tắt

Abstract

Inflammation and neuronal apoptosis aggravate the secondary damage after spinal cord injury (SCI). Rehmannioside A (Rea) is a bioactive herbal extract isolated from Rehmanniae radix with low toxicity and neuroprotection effects. Rea treatment inhibited the release of pro‐inflammatory mediators from microglial cells, and promoted M2 polarization in vitro, which in turn protected the co‐cultured neurons from apoptosis via suppression of the NF‐κB and MAPK signalling pathways. Furthermore, daily intraperitoneal injections of 80 mg/kg Rea into a rat model of SCI significantly improved the behavioural and histological indices, promoted M2 microglial polarization, alleviated neuronal apoptosis, and increased motor function recovery. Therefore, Rea is a promising therapeutic option for SCI and should be clinically explored.

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Thông tin xuất bản

Journal of Cellular and Molecular Medicine

Tập 25 Số 3

1371-1382

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