Pemvidutide TFA

This protocol evaluates hepatotoxicity using complementary in vivo mouse APAP acute liver injury and in vitro hepatocyte-based cytotoxicity readouts. In vivo APAP injury is assessed by serum ALT/AST, liver histology, hepatic glutathione, protein adducts, necrosis, inflammation, and regeneration-related endpoints. In vitro hepatotoxicity is assessed by loss of viability, leakage of ALT/AST/LDH, oxidative-stress markers, mitochondrial function, nuclear morphology, intracellular calcium, and high-content imaging endpoints.

AMP-activated protein kinase, AMPK, is a conserved cellular energy sensor that responds to reduced cellular energy status and coordinates metabolism by increasing ATP-generating catabolic pathways while suppressing ATP-consuming anabolic processes. In metabolic disease research, the AMPK pathway is experimentally relevant because it regulates hepatic lipid synthesis, fatty acid oxidation, glucose production, skeletal-muscle glucose disposal, mTORC1-linked biosynthesis, autophagy, mitochondrial homeostasis, and whole-body energy balance. The central pathway logic is that energy stress, metformin, exercise-like stimulation, or direct AMPK activators increase AMPKα Thr172 phosphorylation and downstream substrate phosphorylation, including ACC and RAPTOR. Phosphorylation of ACC suppresses lipogenesis and supports fatty acid oxidation, whereas phosphorylation of RAPTOR suppresses mTORC1 signaling and links cellular energy status to growth and protein synthesis control. The pathway is linked