目的探讨精浆蛋白在成年男性特发性弱精子症中的差异表达情况。方法纳入2017年1-5月我院泌尿外科门诊特发性弱精子症患者15例作为试验组,年龄24~47岁。同时,纳入精液正常成年男性15例作为对照组,年龄21~44岁。用等重同位素多标签相对定...目的探讨精浆蛋白在成年男性特发性弱精子症中的差异表达情况。方法纳入2017年1-5月我院泌尿外科门诊特发性弱精子症患者15例作为试验组,年龄24~47岁。同时,纳入精液正常成年男性15例作为对照组,年龄21~44岁。用等重同位素多标签相对定量蛋白质组学(isobaric tags for relative and absolute quantitation,i TRAQ)的方法研究成年男性正常精浆蛋白以及特发性弱精子症患者的精浆蛋白表达情况。结果共发现精浆中2 784个蛋白质。其中,与正常组相比,特发性弱精子症患者精浆中表达上调蛋白数为14个,精浆中表达下调蛋白数为79个(表达差异倍数>1.2倍,且P<0.05)。经斑点印迹技术验证蛋白INF2表达水平与iTRAQ结果一致。经GO(gene ontology)蛋白功能注释及富集分析,特发性弱精子症精浆中差异蛋白功能主要包括调节钙离子跨膜转运、胞浆内转运以及螯合、蝶呤钼辅因子合成及代谢、调节铜离子跨膜转运等。经KEGG蛋白通路注释及富集分析,特发性弱精子症精浆中差异蛋白主要富集于叶酸生物合成、金黄色葡萄球菌感染等通路。结论特发性弱精子症患者精浆蛋白同正常成年男性精浆蛋白存在差异,其可能是引起特发性弱精子症的原因。展开更多
An access control model is proposed based on the famous Bell-LaPadula （BLP） model.In the proposed model,hierarchical relationships among departments are built,a new concept named post is proposed,and assigning secur...An access control model is proposed based on the famous Bell-LaPadula （BLP） model.In the proposed model,hierarchical relationships among departments are built,a new concept named post is proposed,and assigning security tags to subjects and objects is greatly simplified.The interoperation among different departments is implemented through assigning multiple security tags to one post, and the more departments are closed on the organization tree,the more secret objects can be exchanged by the staff of the departments.The access control matrices of the department,post and staff are defined.By using the three access control matrices,a multi granularity and flexible discretionary access control policy is implemented.The outstanding merit of the BLP model is inherited,and the new model can guarantee that all the information flow is under control.Finally,our study shows that compared to the BLP model,the proposed model is more flexible.展开更多
文摘目的探讨精浆蛋白在成年男性特发性弱精子症中的差异表达情况。方法纳入2017年1-5月我院泌尿外科门诊特发性弱精子症患者15例作为试验组,年龄24~47岁。同时,纳入精液正常成年男性15例作为对照组,年龄21~44岁。用等重同位素多标签相对定量蛋白质组学(isobaric tags for relative and absolute quantitation,i TRAQ)的方法研究成年男性正常精浆蛋白以及特发性弱精子症患者的精浆蛋白表达情况。结果共发现精浆中2 784个蛋白质。其中,与正常组相比,特发性弱精子症患者精浆中表达上调蛋白数为14个,精浆中表达下调蛋白数为79个(表达差异倍数>1.2倍,且P<0.05)。经斑点印迹技术验证蛋白INF2表达水平与iTRAQ结果一致。经GO(gene ontology)蛋白功能注释及富集分析,特发性弱精子症精浆中差异蛋白功能主要包括调节钙离子跨膜转运、胞浆内转运以及螯合、蝶呤钼辅因子合成及代谢、调节铜离子跨膜转运等。经KEGG蛋白通路注释及富集分析,特发性弱精子症精浆中差异蛋白主要富集于叶酸生物合成、金黄色葡萄球菌感染等通路。结论特发性弱精子症患者精浆蛋白同正常成年男性精浆蛋白存在差异,其可能是引起特发性弱精子症的原因。
基金The National Natural Science Foundation of China(No.60403027,60773191,70771043)the National High Technology Research and Development Program of China(863 Program)(No.2007AA01Z403)
文摘An access control model is proposed based on the famous Bell-LaPadula （BLP） model.In the proposed model,hierarchical relationships among departments are built,a new concept named post is proposed,and assigning security tags to subjects and objects is greatly simplified.The interoperation among different departments is implemented through assigning multiple security tags to one post, and the more departments are closed on the organization tree,the more secret objects can be exchanged by the staff of the departments.The access control matrices of the department,post and staff are defined.By using the three access control matrices,a multi granularity and flexible discretionary access control policy is implemented.The outstanding merit of the BLP model is inherited,and the new model can guarantee that all the information flow is under control.Finally,our study shows that compared to the BLP model,the proposed model is more flexible.
