MAPK8 and fatty liver disease: In summary, our data indicate that KD feeding induces fibrosis and MASH through upregulated Il-6, Tnf, and Mapk13 pathways at TN, whereas adipocyte-specific gp130 deletion prevents KD-induced hepatic steatosis through reduced p-HSL, p-JNK, and p-p38 MAPK signaling.