Piperine induces cellular stresses, apoptosis, and cytotoxicity via JNK signaling and has concentration-dependently additive or synergistic effects with sorafenib in hepatocellular carcinoma: an in-vitro study. - Sayilan Ozgun G; Ozgun E; Karabas T; Suer Gokmen S; Eskiocak S (Naunyn-Schmiedeberg's archives of pharmacology, 2025)