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落叶毒素引起角质形成细胞桥粒蛋白损伤的研究 被引量:1

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摘要 落叶毒素由金黄色葡萄球菌分泌 ,是金黄色葡萄球菌性烫伤样皮肤综合征的主要致病因素。金黄色葡萄球菌性烫伤样皮肤综合征与落叶型天疱疮在临床及组织病理上非常相似 ,电镜发现落叶毒素作用于桥粒 ,近期研究揭示落叶毒素的作用底物为桥粒芯蛋白 1。关于落叶毒素致病机制的理论主要有 :落叶毒素的微观结构显示其类似于谷氨酸特异的丝氨酸蛋白酶 ,通过酶解作用裂解桥粒芯蛋白 1;落叶毒素还可能具有超抗原活性 ,通过免疫反应破坏桥粒。对落叶毒素作用位点、作用机制的研究将有助于了解金黄色葡萄球菌性烫伤样皮肤综合征和天疱疮等相关疾病的发病机制 。
出处 《国外医学(皮肤性病学分册)》 2003年第4期224-226,共3页 Foreign Medical Sciences(Section of Dermatology and Venereology)
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