Systemic metabolic dysfunction drives platelet-mediated inflammation, fibrogenesis, and hepatocarcinogenesis in metabolic dysfunction-associated steatotic liver disease.

Metabolic dysfunction-associated steatotic liver disease (MASLD) has emerged as the most prevalent chronic liver disease worldwide and is closely linked to systemic metabolic disorders. In addition to their classical role in hemostasis, platelets are increasingly recognized as active regulators of inflammation and immune responses, yet their contribution to MASLD pathogenesis remains incompletely defined. This review synthesizes current knowledge on how metabolic disturbances and gut microbiota dysbiosis trigger platelet hyperactivation and intrahepatic recruitment. We examined the mechanisms by which activated platelets exacerbate steatosis, amplify inflammation through interactions with immune cells, promote fibrogenic remodeling through hepatic stellate cell activation, and contribute to hepatocarcinogenesis. In the context of MASLD-associated hepatocellular carcinoma, platelet involvement may occur through both inflammation/fibrogenic remodeling-mediated and direct tumor-regulatory mechanisms. Furthermore, the therapeutic potential of antiplatelet agents, particularly aspirin, in attenuating disease progression has been evaluated. We conclude that targeting platelet-related pathways may represent a promising therapeutic strategy to interrupt the interplay between metabolic dysfunction and liver injury in MASLD.