CCL2 and metabolic dysfunction-associated steatohepatitis: In addition, expression levels of previously established macrophage/monocyte marker genes linked to nonalcoholic steatohepatitis (NASH) pathogenesis [28], including monocyte chemoattractant protein 1 (Mcp1), macrophage inflammatory protein 1α (Mip1α), cell surface glycoprotein F4/80 (F4/80+), and CD68 antigen (Cd68), were analyzed.