超声透析-GFAAS法测定动物组织可溶性小分子蛋白结合铜  

Determination of Small Molecular Soluble Protein Binding Copper in Tissue by Graphite Furnace Atomic Absorption Spectrometry after Ultrasonic-Dialysis

作　　者：张源[1] 韩溟[2] 林哲绚[1] 李慧[1] 李伟秋[1] 赖梅超 罗文鸿[1] 

机构地区：[1]汕头大学医学院中心实验室,汕头515041 [2]汕头大学医学院第二附属医院急诊科,汕头515041 [3]汕头大学医学院第一附属医院神经内科,汕头515041

出　　处：《分析化学》2013年第11期1784-1785,共2页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金(No.81170315);广东省科学技术厅-广东省中医药科学院联合科研专项(No.2012A032500009);广东省自然科学基金博士启动项目(No.S2012040007604)资助

摘　　要：肝豆状核变性、Menke病、婴儿期和儿童期铜中毒综合征、阿尔茨海默病等均与铜代谢失衡有关，如肝豆状核变性疾病患者血清游离铜水平升高、AD病患者脑组织Cu2＋与β-淀粉样蛋白（Amyloidβ，Aβ）的异常结合。铜缺乏会导致Cu／Zn—SOD和铜蓝蛋白两种抗氧化成份酶活性降低。A dialysis-GFAAS method was established for the determination of small molecular soluble protein binding copper （DiaCu） in tissue. 25 kDa dialysis membrane was used, and the dialysate was collected for the copper determination and protein contents determination. The results showed that the detection limit was 0.12 μg/L, with RSD〈5%. The recovery was 90% - 102%. The method was applied to determine the DiaCu in endotoximia SD rats induced by lipopolysaccharide （ LPS）, and it was found that the DiaCu concentration decreased in inflammatory tissue.

关 键 词：GFAAS法 铜中毒 小分子蛋白 动物组织 透析 可溶性 Β-淀粉样蛋白 测定 

分 类 号：R310[医药卫生—基础医学]