羟自由基

Third, we studied the inhibition of type Ⅰ collagen from hydroxyl radicals induced apoptosis.

第三，主要探讨了胶原对羟自由基诱导的细胞凋亡的影响。

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。

The favorable regions for DNA cleavage were observed to be pH 3.6-5.6 and pH 9.0-10, suggesting that the species responsible for DNA cleavage are different in different pH regionsOur results do not support a widely accepted conclusion that the copper-bound or free hydroxyl radicals provided by CuZnSOD with its end product hydrogen peroxide lead to release of copper from its host, the Fenton reaction between the free copper and the hydrogen peroxide being responsible for the aberrant copper-mediated oxidation chemistry in CuZnSOD.

目前广泛接受的一个推测机理是CuZnSOD与H_2O_2反应生成羟自由基损伤酶自身导致Cu释放，而释放出的游离Cu进一步与H_2O_2发生Fenton反应导致了异常催化氧化反应的发生。

Aspirin can delay the progression of lens opacification. Its function is apparent in the earlier stages.

阿司匹林组晶状体匀浆的GSH量、GSH-PX活性及羟自由基抑制能力均高于萘组，而晶状体匀浆的MDA量低于萘组。

Department of Biology, Zhaoqing College, Zhaoqing, 526061,ChinaAbstract:ObjectiveTo study the content of polysaccharide from Rabdosia serra Maxim.

目的研究溪黄草多糖含量及其对羟自由基的清除作用和抑菌作用。

The data showed that the capability of hydrolysis of alcalase was higher than that of protamex; peanut peptides have obvious antioxygenic property and ability to clear HO in effect and increased with a higher degree of hydrolysis.

结果表明，ALCALASE对花生蛋白的水解能力优于PROTAMEX；花生肽具有较强的抗氧化性及有效清除羟自由基的能力，在本试验范围内随水解度的增加而提高。

Bilirubinic decomposition product has more powerful antioxidation than vitamin E;dissociative ferrum also plays roles on harmful product such as hydroxy radical and superoxide anion etc;As an important signal molecules,CO play significant roles on neuron information transfer and vascular tone regulation;people pay attention to HO,which is the main enzymatic system producting endogenous CO increasingly.

其中胆绿素的分解产物具有较维生素E更强的抗氧化作用；Fe~(2+)参与催化生成有害的活性氧代谢物，如羟自由基，超氧阴离子等；CO作为一种气体信使分子，在神经元信息传递和血管紧张度调节中起重要作用，HO作为产生内源性CO的主要酶系统日益受到关注。

Methods The flavonoids were extracted by ethanol as the solvent from Bragica juncea coss with ultrasonic wave and ethanol extraction .

方法采用超声波乙醇浸提法从芥菜中提取黄酮类物质，对所提取的黄酮类物质进行验证，并用分光光度法测定含量，用芥菜总黄酮对羟自由基清除作用进行实验。

Objective To make use of the resources of Braglca juncea coss, avoid wasting and approach the extraction of total flavanone of Bragica juncea Coss and its effects on scavenging of hydroxyl radicals.

目的探讨芥菜中总黄酮的提取、鉴别方法及对羟自由基清除作用，以充分利用芥菜植物资源，避免资源的浪费。

ObjectiveTo make use of the resources of Bragica juncea coss, avoid wasting and approach the extraction of total flavanone of Bragica juncea Coss and its effects on scavenging of hydroxyl radicals.

目的探讨芥菜中总黄酮的提取、鉴别方法及对羟自由基清除作用，以充分利用芥菜植物资源，避免资源的浪费。

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。