Effects of IRA and UV alone or in combination on skin photoaging in mice / 西安交通大学学报(医学版)
Journal of Xi'an Jiaotong University(Medical Sciences)
;
(6): 906-910, 2019.
Article
Dans Chinois
| WPRIM
| ID: wpr-843944
ABSTRACT
Objective:
To detect the expression of MMP-13 in the skin of mice treated by near-infrared (IRA) and ultraviolet (UV) so as to observe their effects on skin photoaging and their interrelation and explore molecular mechanisms in IRA-induced skin photoaging.Methods:
Male ICR mice were randomly divided into five groups control group (without ray exposure), IRA group, UV group, IRA/UV group, and UV/IRA group. The mice in the latter four groups had their dorsal skin exposed to different radiated ray respectively. The levels of MMP-13 protein and mRNA in the exposed skin were detected by HE, immunohistochemical method, Western blot and real-time PCR.Results:
Both skin lesions by visual inspection and H&E staining results showed that mice in the other four groups had skin photoaging in the exposed skin area compared with the control group. The levels of MMP-13 protein and mRNA in the exposed skin in IRA/UV and UV/IRA groups were significantly higher than those in the control mice (P<0.05). In addition, mice in IRA/UV group showed higher levels of MMP-13 protein and mRNA than those in UV/IRA group (P<0.05).Conclusion:
① IRA causes skin photoaging in mice. ② UV and IRA interact with each other, up-regulate the expression of MMP-13, and promote each other in the process of photoaging. ③ The effects of IRA and UV in combination on skin photoaging are closely related to order of exposure. Taken together, avoiding IRA exposure and the expression of MMP-13 play an important role in preventing skin wrinkle formation and treatment of photoaging in mice.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
langue:
Chinois
Texte intégral:
Journal of Xi'an Jiaotong University(Medical Sciences)
Année:
2019
Type:
Article
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