Oxidative Stress, Skin Aging and Antioxidant Therapy / Oksidacioni Stres, Starenje Kože I Antioksidaciona Terapija

Skin aging is a dynamic process that occurs due to chronological and photo-aging caused by the influence of external factors, especially ultraviolet-UV radiation. Cumulative oxidative stress, formation of free radicals and their adverse effects on biological systems in the skin cells is a common mec...

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Bibliographic Details
Published in:Acta Facultatis Medicae Naissensis Vol. 31; no. 4; pp. 207 - 217
Main Authors: Stojiljkovic, Dragana, Pavlovic, Dusica, Arsic, Ivan a
Format: Journal Article
Language:English
Published: Nis De Gruyter Open 01-12-2014
University in Nis, Faculty of Medicine
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Summary:Skin aging is a dynamic process that occurs due to chronological and photo-aging caused by the influence of external factors, especially ultraviolet-UV radiation. Cumulative oxidative stress, formation of free radicals and their adverse effects on biological systems in the skin cells is a common mechanism of both skin aging processes. The formed reactive oxygen species-ROS can lead to the oxidation of cell`s building molecules. Lipid peroxidation, membrane protein damage and DNA mutation may lead to many structural, functional and aesthetic changes in the skin and can also initiate development of many diseases. One of the skin defense mechanisms is antioxidant defense where enzymes and other antioxidant substances react directly with ROS, preventing them from reaching their biological target. Antioxidant substances have the ability to bind free radicals, caused by oxidative stress, and may have significance in prevention and/or therapy of various skin diseases, as well as in slowing the skin aging process. Topical application of antioxidants, such as vitamin C and E, coenzyme Q10 and polyphenolic compounds may provide the strengthening of the skin endogenous protection system and protection from harmful effects of ROS and oxidative damage to the skin. This article outlines the impact of oxidative stress on the chronological and photo- aging, its mechanism of action, the changes that occur on/in the skin during the aging process. Substances with antioxidant characteristics, which can be used in the prevention of chronological and/or treatment of photo-aging of the skin are shown. Starenje kože je dinamičan proces koji se dešava usled hronološkog starenja i foto-starenja izazvanog izlaganjem delovanju faktora spoljašnje sredine, pre svega UV (eng. ultraviolet) zračenja. Kumulativni oksidacioni stres, formiranje slobodnih radikala i njihov nepovoljan uticaj na biološke sisteme u ćelijama kože, predstavljju čest i zajednički mehanizam oba procesa starenja kože. Formirane reaktivne kiseonične vrste (eng. reactive oxygen species-ROS) mogu dovesti do oksidacije gradivnih molekula ćelija. Peroksidacija lipida, oštećenje membranskih proteina i DNK mutacije mogu dovesti do pojave strukturnih, funkcionalnih, kao i estetskih promena na koži, a takođe mogu pokrenuti razvoj mnogih bolesti. Jedan od odbrambenih mehanizama kože je antioksidaciona odbrana, gde enzimi i druge antioksidacione supstance direktno reaguju sa ROS-om, sprečavajući ih da dopru do bioloških meta u koži. Antioksidacione supstance imaju sposobnost da vežu slobodne radikale nastale usled oksidacionog stresa, pa mogu biti značajne u prevenciji i/ili terapiji mnogih bolesti kože, kao i u usporavanju procesa starenja kože. Lokalna aplikacija antioksidanasa, kao što su vitamin E i C, koenzim Q10 i polifenolna jedinjenja, može da omogući jačanje endogenog zaštitnog sistema kože i predstavlja jedan od načina zaštite kože od štetnih efekata ROS-a i oksidacionog oštećenja kože u procesu starenja kože. U ovom radu je prikazan uticaj oksidacionog stresa na hronološko i foto-starenje kože, mehanizam njegovog delovanja, promene koje nastaju na/u koži u toku procesa starenja. Dat je prikaz supstanci sa antioksidacionim delovanjem koje mogu da se koriste u prevenciji hronološkog i/ili tretmanu foto-starenja kože.
ISSN:2217-2521
0351-6083
2217-2521
DOI:10.2478/afmnai-2014-0026