过氧化

During ANP, endogenesis antioxidation decreases remarkably in organization of pancreas, lipid peroxides increases, having obvious the damage of oxidative hyperirritability.

ANP时胰腺组织中内源性抗氧化物质显著下降，脂质过氧化增加，有明显的氧化应激损伤。

In currence, se- GSH- PX activity have been been used as a standard of Selenium nourishment, GSH- PX is an extremely important protection enzyme in anti oxida- tive defend system of organize and cell of animal.It clear hydroxy radical and hyperoxide in cell respir- ation metabolism reaction ,thereby, mai- ntain cell's normal physiological function, prote- ct biomembrane and biomacromolecule from oxidative damage.If the activity is high or not, effect the ab- ility that the organize clears hyperoxize lipi- d ,directly.

目前，含se-GSH-PX活性已被作为se营养状况可一个指标，该酶是动物组织细胞抗氧化防御系统中一个极为重要的保护性酶，它是以还原型GSH为底物的谷胱甘肽参与的过氧化反应，清除细胞呼吸代谢反应过程产生的羟自由基和过氧化物，从而使细胞能维持正常的生理功能，保护生物膜和生物大分子结构免受氧化损伤。

Can scavenge DPPH·strongly with IC_(50) of 0.164 mg/mL, and inhibit hemolysis of mice erythrocyte evidently with IC_(50) of 0.112 mg/mL. The reactive oxygen species resistant power of mice serum is enhanced by the pigment, the concentration of MDA resulting from peroxidation of lipid in mice liver tissue can be reduced, and the swelling of mice liver mitochondria can also be restrained. The preventing experiments of the pigment of Lycium ruthenicum Murr.

在药理学研究中体外抗氧化实验表明，PLR具有一定的抗氧化能力，表现出很强的DPPH·自由基清除活性，IC_(50)达到0.164 mg／mL；能显著的抑制小鼠红细胞溶血，IC_(50)为0.112mg／mL；能增强小鼠血清抗活性氧能力，抑制小鼠肝组织脂质过氧化产物MDA生成和小鼠肝线粒体肿胀度，并显示出一定的量效关系。

The anti-oxidation was measured by the self oxidation method of pyrogallol, Fenton system and lipid peroxidation in rat liver tissue.

利用水提分级醇沉法从关白附中提取可溶性多糖，采用邻苯三酚自氧化、Fenton体系和H2O2致鼠肝脏脂质过氧化的方法，观察体外加入关白附多糖对这些氧化反应的影响。

The method of phenanthroline-Fe2+reaction system and autoxidation reaction system of pyrogallol and the system of lipid peroxide were used to measure the antioxidation of the water extraction from C.

本文采用邻二氮菲-Fe2+氧化法，邻苯三酚自氧化法以及卵黄脂蛋白不饱和脂肪酸过氧化体系，对甘青铁线莲花水提取物清除超氧阴离子自由基O2-。

The results indicated that the water or 50% ethanol extracts from peonies petals could reduce light absorption of DPPH and OH initiated hydroxylation of salicylate, and inhibit O2(superscript -) mediated light chemical reduction of nitroblue tetrazolium effectively, and lipid peroxidation of polyunsaturated fatty from yolk lipoprotein, in which DPPH scavenging activities of 6 peonies water extracts were hinger than that of 200 μg/mL BHT, but lower than 80 μg/mL Vc. In 4 kinds of detecting systems of antioxidation, the peroxidation activity of deep colored flowers of peonies was higher than that of light colored flowers of peonies.

牡丹花瓣提取液能明显抑制卵黄组织匀浆的脂质过氧化作用，降低DPPH的吸光值、抑制O2介导的NBT光化学还原及OH作用下的水杨酸羟基化作用，其中牡丹花瓣提取液清除DPPH自由基的活性高于200μg/mL BHT，但低于80μg/mL Vc.6个品种的牡丹花瓣提取液，在4种测定系统中均具有一定程度的抗氧化能力，且水提取液的抗氧化活性略高于体积分数50%乙醇提取液，深色花瓣提取液对不同自由基的清除能力较强。

LDL of serum in healthy person was separated by improve precipitate method.Results:Pae(300,150 mg.kg-1)could reduce significantly the levels of MDA of serum,aorta and liver;Pae(300 mg.kg-1)decreased obviously the content of OX-LDL of plasma;Pae1 000,200,40 μg.ml-1refrained markadly the course of oxidational decorate of LDL of serum in healthy person.

结果：Pae(300，150 mg.kg-1)可明显抑制高脂大鼠血清、主动脉及肝脏脂质过氧化反应；Pae(300 mg.kg-1)显著减少高脂大鼠血浆LDL的氧化修饰；Pae(1 000，200，40 μg.ml-1)对健康人血清LDL的体外氧化反应有极显著抑制效应。

There are conflicting results among studies on the effects of fish oil or n-3 PUFA on LDL oxidizability. The important questions of whether supplementation with fish oil renders redox status more prone to oxidative modification or influence cells' ability to defend oxidative modification have not yet been conclusively answered.

而有关鱼油和omega-3 PUFA对LDL的脂质过氧化究竟是促进或抑制，却一直颇有争议，因此关於&补充鱼油会让生物体的氧化压力增加还是有助於抗氧化能力的提升&这个重要问题，目前还不能完全暸解。

objective:to investigate the influence of soybean isoflavones on the antioxidative effect and improving the ability of study and memory in climacteric rats.methods:forty-eight female sd climacteric rats were randomly divided into 4 groups with one control group and the other low,medium and high dose groups,which were given soybean isoflavones 0 mg/kg.bw,42 mg/kg.bw,83 mg/kg.bw and 249 mg/kg.bw by superalimentation daily for 60 days respectively.the levels of sod,gsh-px and mda in serum were measured,and the ability of study and memory in each group was deterimined by adopting the law of diving platform.results:the content of serum mda in medium and high dose groups was lower than that in control group.the activity of serum gsh-px im medium and high dose groups was significantly increased,so was the activity of serum sod in low,medium and high dose groups.conclusion:soybean isoflavones do have the obvious effect of antioxidation,and improve the ability of study and memory effectively in female sd climacteric rats.

目的：观察大豆异黄酮对更年期雌性sd大鼠抗氧化作用及学习记忆的影响。方法：选用健康更年期雌性sd大鼠，随机分成空白对照组和低、中、高剂量4组。空白对照组给予蒸馏水，实验组每日分别灌服42、83、249 mg/kg剂量的大豆异黄酮，连续60d。第60d取血测定血清过氧化脂质丙二醛含量、超氧化物歧化酶活力、谷胱甘肽过氧化物酶活力，用跳台实验方法测定大鼠学习记忆能力。结果：与空白对照组比较，中、高剂量组大鼠血清mda含量显著降低，低、中、高剂量组血清sod活力明显升高，中、高剂量组血清gsh-px活力明显升高。结论：大豆异黄酮具有明显的抗氧化作用，并有效提高更年期雌性sd大鼠的学习记忆能力。

It is possible that antioxidant of SH-S, SB-S also play their protective role similar to α-Toc, and the unoxidated PUFA in the plant oils might act as the PUFA supplier to the cells for repairing the injured membrane.

Toc可以通过清除FR，阻断脂质过氧化链锁反应，稳定细胞膜的机制来保护细胞，秋葵籽、沙棘籽油所含的抗氧化物质可通过类似α-Toc的机制起保护作用，并且它们所含的未被氧化的PUFA可能还会作为细胞修复已损伤的膜脂质的来源。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。