详细信息

多尺度纳米SiO_2对小鼠肝、肾和脾的急性氧化损伤    

Multiscale Nano-SiO_2 on Acute Oxidative Damage in Liver,Kidney and Spleen of Mice

文献类型:期刊文献

中文题名:多尺度纳米SiO_2对小鼠肝、肾和脾的急性氧化损伤

英文题名:Multiscale Nano-SiO_2 on Acute Oxidative Damage in Liver,Kidney and Spleen of Mice

作者:杨莎莎[1];林匡飞[1];张卫[1];徐圣友[1];蓝闽波[1]

机构:[1]华东理工大学资源与环境工程学院,国家环境保护化工过程环境风险评价与控制重点实验室,上海200237

年份:2009

卷号:35

期号:6

起止页码:834

中文期刊名:华东理工大学学报(自然科学版)

外文期刊名:Journal of East China University of Science and Technology

收录:CSTPCD;;Scopus;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;

基金:国家自然科学基金项目(20677015;40901148);上海市科委纳米专项(0752nm025);国家863计划(2007AA06Z331;2008AA06A406);上海市重点学科项目(B506)

语种:中文

中文关键词:多尺度纳米SiO2;超氧化物歧化酶;丙二醛;氧化损伤

外文关键词:multiscale nano-SiO_2 superoxide dismutase(SOD) malondialdehyde(MDA) oxidative damage

摘要:研究了多尺度纳米SiO2对小鼠器官的急性氧化损伤效应。采用SPF(Specific PathogenFree)级ICR(Institute of Cancer Research)品种小鼠进行实验。将小鼠随机分成5组,设对照组和4个尺度处理组,经尾静脉注射多尺度纳米SiO2悬液后,观察72 h后处死小鼠,取相应组织(肝、肾、脾),测定其中总蛋白(TP)、总超氧化物歧化酶(T-SOD)、谷胱甘肽过氧化物酶(GSH-PX)和脂质过氧化产物丙二醛(MDA)含量(活性)。结果表明:在各个尺度纳米SiO2处理中,20.3 nm SiO2的毒性最大,49.8 nm和80.0 nm SiO2次之,800.0 nm SiO2的毒性最小,这充分说明了纳米颗粒的尺度效应。统计分析结果表明:在所选各组织器官中,多尺度纳米SiO2氧化损伤最容易发生在肝脏中,差异极显著(P<0.01);而在小鼠的抗氧化酶系统指标中,MDA是最敏感的指标,差异极显著(P<0.01),其他指标差异均不显著(P>0.05)。
This study investigated the acute antioxidative effects of multiscale nano-SiO2 in organ of specific pathogen free(SPF) mice of the ICR strain.The mice were randomly divided into five groups and were intravenously injected with a multiscale nano-SiO2 suspension except for the control group.After 72 h observation,all the mice were killed and their liver,kidney and spleen extracts were measured for total protein(TP),superoxide dismutase(T-SOD),glutathione peroxidase(GSH-PX)and malondialdehyde(MDA).The results show that 20.3 nm SiO2 has the most toxic effect to mice,followed by 49.8 nm and 80.0 nm SiO2.The 800.0 nm SiO2 has the weakest toxicity.This finding fully illustrates the scale effect of nano-scale particles.Statistical analysis shows that oxidative damage can possibly occur in liver(P〈0.01).) MDA is the most sensitive indicators in antioxidant enzyme system.The difference is very obvious(P〈0.01),)but other indexes don't perform their significant difference(P〉0.05).

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