A practical clinical device for evaluating changes to the skin's sebum from ozone

被引:1
|
作者
Liebel, Frank [1 ]
Petersen, Stephanie [1 ]
Grove, Gary [2 ]
Houser, Tim [3 ]
机构
[1] Avon Prod Inc, Suffern, NY USA
[2] cyberDERM Inc, Broomall, PA USA
[3] Dermico LLC, Broomall, PA USA
关键词
cosmetic; ozone; pollution; sebum; squalene; MECHANISMS; POLLUTION; EXPOSURE; STRESS; DAMAGE;
D O I
10.1111/ics.12998
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
BackgroundIt is known that tropospheric ozone (O3) generated from pollutants reacting with UV forms lipid peroxidation products and induces oxidative stress to the skin. With the ever-increasing consumer awareness of the effects pollution has on skin, more testing methods will be needed to evaluate cosmetic ingredients. Recently, others have shown how antioxidants are able to reduce the effects from ozone on skin through in vitro, ex vivo and clinical studies where human subjects place their arms into large stationary chambers.AimsTo develop a small, easy to use ozone exposure module (OEM) that can be used on various sites of the body and to validate this device for use in testing the ability of topical products to mitigate the effects of ozone exposure on the skin.Materials and MethodsWe have produced an OEM which can generate levels of ozone in excess of 1000 ppb and can be set to achieve the equivalent exposure to what is found in polluted environmental conditions. After exposure we used D-squame discs to remove the sebum and analytically quantitate squalene depletion. Squalene, which is very sensitive to ROS, easily oxidizes into early metabolite squalene monohydroperoxide (SQOOH) with ozone exposure.ResultsWe were able to show decreases in squalene levels after exposure and protective effects from a topical formulation.ConclusionThis generator will be a useful tool for researchers to easily create a small and safe exposure from ozone for clinical testing. ContexteOn sait que l'ozone troposph & eacute;rique (O3) g & eacute;n & eacute;r & eacute;e par les polluants r & eacute;agissant avec les UV forme des produits de peroxydation lipidique et induit un stress oxydatif pour la peau. Avec la sensibilisation croissante des consommateurs aux effets de la pollution sur la peau, plus de m & eacute;thodes d'analyse seront n & eacute;cessaires pour & eacute;valuer les ingr & eacute;dients cosm & eacute;tiques. R & eacute;cemment, d'autres m & eacute;thodes ont montr & eacute; la capacit & eacute; des antioxydants & agrave; r & eacute;duire les effets de l'ozone sur la peau gr & acirc;ce & agrave; des & eacute;tudes in vitro, ex vivo et cliniques o & ugrave; les sujets humains placent leurs bras dans de grandes chambres stationnaires.ObjectifsD & eacute;velopper un petit module d'exposition & agrave; l'ozone (MEO) facile & agrave; utiliser qui peut & ecirc;tre utilis & eacute; sur divers sites corporels afin de valider ce dispositif pour utilisation dans des analyses de capacit & eacute; des produits topiques & agrave; att & eacute;nuer les effets de l'exposition & agrave; l'ozone sur la peauMat & eacute;riels et m & eacute;thodesNous avons produit un MEO qui peut g & eacute;n & eacute;rer des niveaux d'ozone sup & eacute;rieurs & agrave; 1 000 ppb et qui peut & ecirc;tre r & eacute;gl & eacute; pour atteindre l'exposition & eacute;quivalente aux niveaux pr & eacute;sents dans des conditions d'environnement pollu & eacute;. Apr & egrave;s exposition, nous avons utilis & eacute; des disques D-squame pour & eacute;liminer le s & eacute;bum et quantifier analytiquement la d & eacute;pl & eacute;tion en squal & egrave;ne. Le squal & egrave;ne, qui est tr & egrave;s sensible au ROS, s'oxyde facilement en m & eacute;tabolite pr & eacute;coce monohydroperoxyde de squal & egrave;ne (SQOOH) avec exposition & agrave; l'ozoneR & eacute;sultatsNous avons pu montrer des diminutions des taux de squal & egrave;ne apr & egrave;s exposition et les effets protecteurs d'une formulation topique.ConclusionCe g & eacute;n & eacute;rateur sera un outil utile pour que les chercheurs puissent facilement cr & eacute;er une petite exposition s & ucirc;re & agrave; l'ozone pour les analyses cliniques. This study was able to show that a small, compact ozone generator can be a useful clinical instrument in the evaluation of the effects of ozone on the skin.image
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页码:598 / 602
页数:5
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