Cepharanthine, a regulator of keap1-Nrf2, inhibits gastric cancer growth through oxidative stress and energy metabolism pathway oleh Yang-yang Lu, Chun-yang Zhu, Yi-xin Ding, Bing Wang, Shu-fen Zhao, Jing Lv, Shu-ming Chen, Sha-sha Wang, Yan Wang, Rui Wang, Wen-sheng Qiu, Wei-wei Qi