Piperlongumine A attenuates RANKL-induced osteoclastogenesis by targeting MAPK signaling and downregulating c-Fos and NFATc1 - Tran Thi Thu Phuong; Le Hoang Long; Phan Thi Tu Uyen; Nguyen Xuan Nhiem; Jeong-Hyung Lee; Nguyen Hai Dang (Journal of Natural Medicines, 2026)