Mechanism of grape seed proanthocyanidin oligomers inhibiting polarization of type Al astrocytes北大核心CSCD

Aim To explore the mechanism of grape seed proanthocyanidins (GSPs) targeting astrocytes (AS), so as to regulate the phenotype and function of AS and maximize their neuroprotective effect. Methods The effects of GSPs on the phenotype, secretion of pro-inflammatory factors and neurotrophic factors of Al AS induced by TNF-α, IL-1α and Clq were investigated by RT-PCR, Elisa and Western blot in vitro. And JNK phosphorylation was determined using Western blot. Results GSPs significantly reduced the expression of C3d and Clq of Al AS markers and inhibited the phosphorylation of JNK. Moreover, compared with the model group, GSPs could significantly inhibit the release of pro-inflammatory cytokines IL-6, IL-1 α, IL-17 and H 2 O 2, and promote the secretion of anti-inflammatory cytokine TGF-β and neurotrophic factor CNTF. Conclusions GSPs can inhibit the polarization of AS to Al and improve the inflammatory micro-environment, which are related to the inhibition of JNK phosphorylation. © 2023 Publication Centre of Anhui Medical University. All rights reserved.