Neuroprotective effects of ethanol extraction from Rubia yunnanensis Diels on chronic cerebral hypoperfusion: modulation of the System Xc-/GSH/GPX4 axis to alleviate oxidative stress and ferroptosis - Cheng, Jianghao; Ma, Xiaoxia; Tao, Jie; Jiang, Xiaoli; Chen, Pu; Duan, Xiaohua (Frontiers in Pharmacology, 2025)