中文摘要：

目的 鉴定早泄肾阳虚证血清蛋白质组,从蛋白质相互作用角度探索肾阳虚证发病机制。方法分别取4例早泄肾阳虚证患者及4名健康人外周血,提取血清蛋白,获取肾阳虚证相关蛋白质组,采用同位素标记相对和绝对定量技术鉴定肾阳虚证血清蛋白质组,采用STRING数据库构建肾阳虚证蛋白质相互作用网络,对各网络中蛋白质功能进行生物信息学分析。结果 共鉴定血清蛋白质总数238个,其中有定量信息的162个。筛选差异表达蛋白质9个,其中1个上调,8个下调。肾阳虚证蛋白质相互作用网络由72个蛋白质节点和283对蛋白质相互作用构成,并可以聚为16个模块,其中蛋白质节点≥3的模块有10个。每个模块都有一个核心蛋白,其中C3、C5、C1S和MASP2为补体系统的组分蛋白,主要参与补体激活生物学过程。结论 早泄肾阳虚证差异蛋白质相互作用网络中蛋白模块的功能主要富集于补体激活生物学过程,提示以补体激活途径异常为主导的免疫功能紊乱可能是肾阳虚证的主要病理机制之一。

英文摘要：

Objective To identify serum proteome of ejaculation praecox（EP） with Shen-yang de- ficiency, and to explore its pathogenesis of EP in the protein-protein interaction （PPI） network. Methods The serum samples were respectively collected from 4 EP with Shen-yang deficiency patients and 4 healthy controls. After the serum proteome of EP with Shen-yang deficiency was obtained, the technology of iso- baric tags for relative and absolute quantitation （~iTRAQ） was adopted for identification. The STRING data- base was applied to construct the PPI network whose function was analyzed through bioinformatics meth- ods. Results A group of 238 serum proteins were identified in total, of which, 162 proteins reached the strict quantitative standard. Nine proteins were differently expressed, including 1 up-regulated and 8 down- regulated. The constructed PPI network was constituted by 72 protein nodes and 283 protein couples, and could be clustered to 16 clusters, in which 10 clusters were composed of 3 or more proteins. Each cluster could be found with a core protein correspondingly. The core protein of C3、C5、C1S and MASP2 were all main constituents of complement system, whose function involves in biological process of complement ac- tivation. Conclusions The protein models in PPI network of differently expressed serum proteome about EP with Shen-yang deficiency were functional enriched in the biological process of complement activa- tion ; which indicate that a immune dysfuction dominated by abnormal process of complent activation may be one of the main mechanisms of EP with Shen-yang deficiency.