Cholesterol Metabolism & Antioxidant Systems

Cholesterol Metabolism & Antioxidant Systems refer to the integrated biochemical networks that regulate lipid levels and cellular redox balance. Cholesterol metabolism is centered on the endogenous synthesis of cholesterol via the mevalonate pathway and its subsequent transport via lipoproteins (StatPearls, 2023). Antioxidant systems, including enzymes like glutathione peroxidase and superoxide dismutase, protect cellular components from oxidative damage caused by reactive oxygen species (NCBI, 2022). The intersection of these systems is vital in vascular health, as the oxidation of low-density lipoprotein (LDL) is a key step in the development of atherosclerotic plaques (PubMed, 2021). Therapeutic strategies often involve lowering cholesterol through HMG-CoA reductase inhibitors (statins) or enhancing antioxidant defenses to prevent chronic inflammatory diseases (Journal of Lipid Research, 2020). As this term describes a collection of pathways rather than a single protein or receptor, it is not considered a discrete therapeutic target.

Other names

Lipid metabolism and redox homeostasisCholesterol-antioxidant axisLipid peroxidation defense systems

Drugs targeting these systems typically inhibit HMG-CoA reductase to decrease cholesterol synthesis, block NPC1L1 to reduce cholesterol absorption, or activate Nrf2-mediated transcription of antioxidant enzymes to mitigate oxidative stress.