维普中文期刊产品整合服务
2篇 您的检索式:作者名="Sander C.S."
    题名 作者 年代 出处 被引量
1在硬化萎缩苔癣的发病机制中涉及到氧化应激Sander C.S. Ali I. Dean D. F. Wojnarowska 牛新武 2005世界核心医学期刊文摘(皮肤病学分册)2005,0,3:0
2人类皮肤细胞外基质蛋白1(ECM1)的表达随年龄而减少并随紫外线照射而增加显示文摘Background: The extracellular matrix protein 1 (ECM1) is expressed in human skin and plays an important role in its normal structure and function. In the rare genetic skin disease lipoid proteinosis, which is characterized by a loss-of-function mutation in the ECM1 gene, skin areas habitually exposed to the sun may show a more severely scarred and photoaged appearance. However, no data are available on the possible involvement of ECM1 expression in intrinsic and extrinsic skin ageing. Objectives: We hypothesized that ECM1 expression in human skin is regulated by age and ultraviolet (UV) dependent mechanisms. Methods: Skin biopsies from 12 patients with histologically confirmed solar elastosis, from non UV exposed sites of 12 age-matched controls and 12 young subjects were analysed. To evaluate the influence of acute UV exposure, buttock skin of 10 healthy subjects was irradiated repetitively on 10 days with a solar simulator and compared intraindividually with non-UV-treated contralateral sites. The expression of ECM1 was investigated by immunohistochemistry using an ECM1 antibody detecting ECM1a and ECM1c isoforms. Semiquantitative analysis of staining intensity was carried out by densitometric image analysis. Results: In normal human skin ECM1a and ECM1c are expressed mainly in the basal cell layers of epidermal keratinocytes and in dermal vessels. For the first time, an expression in the outer root sheath of hair follicles, in sebaceous lobules and epithelium of sweat glands is described. Intrinsically (UV-protec-ted) aged skin shows a significantly reduced expression in basal and upper epidermal cell layers compared with young skin. In photoaged skin, expression is significantly increased within the lower and upper epidermis compared with age-matched UV-protected sites. Importantly, after acute UV exposure in young healthy subjects expression of ECM1 is markedly increased in both lower and upper epidermal cell layers. Conclusions: This is the first study to demonstrate a regulation of ECM1 expression in human skin by age and UV exposure. These data suggest that ECM1 expression may represent a cutaneous stress response to acute and chronic UV irradiation.Sander C.S. Sercu S. Ziemer M. J. Merregaert 王琼 2006世界核心医学期刊文摘(皮肤病学分册)2006,2,6:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费