抗氧化酶

Effects of water stress on the level of reactive oxygen speciesand activities of antioxidant enzymes in the leaves of wheat(Triticum durum Desf.) seedlings were investigated.Water stress resulted in significant increase in the contents of O-.2,MDA and the activities of superoxide dismutase and ascorbate peroxidase in wheat leaves.However,the activities of glutathione reductase,catalase and the content of H2O2 were not changed obviously under water stress.

分析了水分胁迫对小麦幼苗叶片中活性氧水平和抗氧化酶活性的影响，结果发现，水分胁迫能够显著提高超氧阴离子(O-2·)和丙二醛的含量及超氧化物歧化酶和抗坏血酸过氧化物酶的活性，而过氧化氢(H2O2)的含量及过氧化氢酶和谷胱甘肽还原酶的活性变化不明显。

The results indicate that the protecting effects of NO against imbibition may be due to the activation but not the synthesis of NO-dependent antioxidant systems.

结果表明，NO可提高番茄种子抵抗吸胀冷害的能力，而且与NO激活了抗氧化系统有关，但NO不是通过促进抗氧化酶的合成来提高其活性。

It participates to make up antioxidase and many other selenium proteins that exert the effects in eliminating free radical and antioxidation in human body.

硒是人体必需微量元素，它参与抗氧化酶谷胱甘肽过氧化物酶和多种硒蛋白的组成，在体内发挥消除自由基、抗氧化物等作用。

In improvement of diseases probably be associated with enhancing of antioxidase expression against damages of oxygen free radicals.

党参、首乌等混合注射液有改善学习记忆和上调抗氧化酶SOD、GSHPX、下调过氧化物MDA表达作用，说明党参、首乌等传统中药延缓衰老与促进抗氧化机制、减轻氧自由基损伤有关。

Dipsacus asperciaes can enhance expression of the anti-oxidase, suggesting that the efficacy of the herb drug is associated with enhancing of expression of anti-oxidase against damages of oxygen free radicals and senility.

五鹤续断增强抗氧化酶的表达作用，提示可能与促进抗氧化、抵抗氧自由基损伤和延缓衰老的机制有关。

The influence of three kinds of heavy metal on the activities of peroxidase, superoxide dismutase,catalase and the contents of malondialdehyde, soluble protein and chlorophyll of Lemna minor was investigated.

对水体中主要的3种重金属对青萍抗氧化酶系统的几种酶，包括过氧化物酶、超氧化物歧化酶、过氧化氢酶的活性，丙二醛的含量，可溶性蛋白含量及叶绿体色素含量等指标的影响进行了研究。

Nigrum and S. melongena seedlings presented a different rule. The leaf SOD activities of S. nigrum increased under low Cd (≤50 μM) and then decreased, POD and CAT increased continuously. However, SOD activities of S. melongena gradually decreased, POD activities increased and the CAT presented the rule of drop-rise-drop. SOD, POD, and CAT in the leaves of S. nigrum plaved an important role against Cd stress.

龙葵叶片SOD活性随镉胁迫程度的增加先增高后降低，POD和CAT活性基本上表现为逐渐上升趋势，而茄子叶片中SOD活性逐渐下降，POD逐渐上升，CAT呈先降后升又降的变化规律，龙葵体内的3种抗氧化酶对镉胁迫起到较强的抗氧化保护作用。

When it surpasses the removal ability of antioxidation , it .causes chain reactions of peroxidation, resulting in serious damnification of organism membrance and microcycle, even collapse. Free radicals and product of their metabolism make polyamylose divide chains, unsaturated fat acid peroxide, protein tangle, RNA and DNA rupture and mutate.

当其超出体内抗氧化酶的清除能力时，引起脂质过氧化链式反应，导致生物膜及微循环严重损伤，甚至崩溃，自由基及其产物使多糖聚解，不饱和脂肪酸过氧化，蛋白交联，RNA、DNA断裂、突变等。

rubia cordifolia l can promote the mice capacity of antioxidation and reduce the content of mda, have obvious improve great mouse's sports ability.

补充茜草提取物可显著提高小鼠心肌和肝脏组织抗氧化酶的活性，减轻大强度耐力训练对大鼠心肌和肝脏组织造成的脂质过氧化损伤，具有明显的抵抗脂质过氧化的功能，对小鼠运动能力的提高有良好的作用。

Objective To explore the activities and the level of antioxidant system in Parkinson disease and the effect of L-dopa and Vit E on it,and find the indications of oxidative stress in PD.

目的 探讨帕金森病的抗氧化酶活性和过氧化脂质代谢水平的变化和多巴药物及Vit E对其的影响，找出反映氧化异常的客观生化指标。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。