Negli esseri umani, come in tutti i mammiferi sono presenti tre forme di superossido dismutasi: SOD1 nel citoplasma, SOD2 nei mitocondri, e SOD3 è extracellulare.
La SOD è utilizzata in prodotti cosmetici per ridurre i danni dei radicali liberi sulla pelle.
Nella genesi del prurito sono pruritogeni istamina, leucotrieni, acetilcolina, citochine, kallikreine, proteasi, chinine, oppioidi, ecc.
Viene osservato che SOD topica sembra possedere una forte attività antiprurito, anche per prurito resistente ad antistaminico.
Vengono riportati i dati della letteratura sugli effetti della SOD come antiprurito su recettori NK-1 e citochine proinfiammatorie, il suo ruolo regolatorio su produzione e espressione del peptide calcitonin gene-related, down-regulation di TNF e numerose citochine, e sulla soppressione della produzione di ossido nitrico.
Acta Dermatovenerol Croat. 2009;17(1):25-39.
The basis of topical superoxide dismutase antipruritic activity.
Diehl C, Lipozencić J, Ledić-Drvar D.
In humans, as in all mammals and most chordates, three forms of superoxide dismutase (SOD) are present: SOD1 is located in the cytoplasm, SOD2 in the mitochondria, and SOD3 is extracellular. SOD is used in cosmetic products to reduce free radical damage to the skin, for example, to reduce fibrosis following radiation for breast cancer. Pruritus is one of the most common symptoms of skin diseases, but can also be a major symptom of systemic diseases (e.g., malignancy, infection or metabolic disorders). There are various antihistaminics used as antipruritogenic substances. In the genesis of pruritus there are many pruritogens involved, not only histamine and leukotrienes such as acetylcholine, cytokines, kallikreins, proteases, kinins, opioids, etc., which are described. On many occasions, we observed that topical SOD seemed to possess strong antipruritic activity, even in anti-histamine-resistant pruritus. We analyzed literature data on the effect of SOD as an anti-pruritogen on NK-1 receptors and proinflammatory cytokines, its regulatory role in calcitonin gene-related peptide production and expression, down-regulation of TNF- and numerous cytokines, and suppression of nitric oxide production.
Filed under: Experimental News, PRURITO, TOPICI | Tagged: cause prurito, cura prurito, DERMATITE DA STRESS, dermatologo, Prof. Santoianni, stress, terapia prurito | Leave a comment »