NMN reverses D-galactose-induced neurodegeneration and enhances the intestinal barrier of mice by activating the Sirt1 pathway - Lin, Yuxian; Wang, Yajing; Yang, Xinxin; Ding, Ziwei; Hu, Mingye; Huang, Xianfeng; Zhang, Qichun; Yu, Yingcong (Frontiers in Pharmacology, 2025)