Antioxidant pathway in liver cell

The term "Antioxidant pathways in liver cells" refers to a collection of molecular systems and enzymatic processes that protect hepatocytes from oxidative damage caused by reactive oxygen species. These pathways are not a single molecule or receptor but encompass multiple enzymes—such as superoxide dismutase, catalase, glutathione peroxidase—and regulatory proteins like Nrf2 that coordinate the cellular response to oxidative stress. The balance between ROS production and these antioxidant defenses is crucial for maintaining hepatic function; disruption leads to lipid peroxidation, protein/DNA damage, inflammation, fibrosis progression, and ultimately contributes to diseases such as NAFLD/NASH and cirrhosis. While several drugs and nutraceuticals target these pathways—including silymarin/silibinin, pentoxifylline, resveratrol, vitamins A/C/E—the overall clinical impact remains limited due to complex regulation and redundancy within the system. Biomarkers such as GSH/GSSG ratio or MDA are used experimentally but have limitations for routine patient selection or monitoring efficacy.[1][2][4] Note: This entry is not a specific therapeutic target but rather describes a broad set of protective mechanisms; therefore "Antioxidant pathway in liver cell" should not be considered a canonical drug target name.

Other names

Antioxidant defense system in hepatocyteHepatic antioxidant pathwaysLiver antioxidant mechanisms

Scavenging of free radicals and ROS by antioxidants[4]; Induction or modulation of gene expression for antioxidant enzymes such as superoxide dismutase, catalase, glutathione peroxidase[5][8]; Activation of nuclear factor erythroid 2–related factor 2 (Nrf2) pathway to upregulate cellular antioxidant response[7]