Reactive oxygen species and oxidized lipids in sebum (ROS/Ox-Lipids)

Reactive oxygen species (ROS) and oxidized lipids in sebum, particularly squalene monohydroperoxide, represent key pathological factors in the development of inflammatory skin conditions like acne vulgaris [Bowe, 2010, Lipids Health Dis]. Squalene, a unique component of human sebum, is highly susceptible to oxidation by environmental stressors such as UV radiation and ozone, leading to the formation of lipid peroxides [Ottaviani, 2010, Mediators Inflamm]. These oxidized species act as pro-inflammatory mediators by stimulating the production of cytokines like IL-6 and activating the NF-κB pathway in sebocytes and keratinocytes [Kappes, 2006, Exp Dermatol]. Furthermore, oxidized lipids can alter the skin's barrier function and promote the hyperkeratinization of the pilosebaceous unit, facilitating comedogenesis [Briganti, 2003, J Eur Acad Dermatol Venereol]. Therapeutic intervention typically involves the use of topical or systemic antioxidants, such as Vitamin E, Vitamin C, and various polyphenols, which aim to neutralize ROS and terminate lipid peroxidation chains [Pappas, 2009, Dermato-endocrinology]. By reducing the oxidative burden in the sebum, these treatments help mitigate inflammation and prevent the progression of acne lesions.

Other names

Squalene peroxidesLipid peroxides in sebumSebum oxidation productsOxidized squaleneSqualene monohydroperoxide

Antioxidant scavenging of free radicals and inhibition of lipid peroxidation chain reactions