活性的

Objective: To explore the mechanisms resulting in the recurrence of urethral scar which make urethral strictures difficult to be cured, a series experiments were conducted to find potential effective factors involved in urethral scar formation and degradation, including the studies of extracellular matrix component of urethral stricture scar, the characteristics of urethral scar fibroblast, and the effects of urine on urethral fibroblast in vitro, as well as the studies to compare the difference of collagenase activity, type Ⅰ collagen and tissue inhibitor of metalloproteinase-1 (TIMP-1) in the tissues and cultured fibroblasts from normal urethra and strictured urethra respectively, and the studies to investigate the effect of antisense TIMP-1 oligodeoxyonucleotide on cell proliferation and collagenase activity of urethral scar fibroblast.

中文题名尿道瘢痕基础研究副题名胶原酶活性，TIMP-1的表达及其反义基因治疗外文题名 Experimental study on urethral scar-activity of collagenase，expression of TIMP-1，and antisense TIMP-1 gene transfection of urethral scar fibroblast 论文作者黄翔导师杨宇如教授学科专业外科学研究领域\研究方向学位级别博士学位授予单位四川大学学位授予日期2002 论文页码总数104页关键词尿道手术瘢痕胶原酶成纤维细胞尿道瘢痕馆藏号BSLW /2003 /R699 /12 目的：研究尿道瘢痕的细胞外基质的组成，尿道瘢痕成纤维细胞的生物学特性以及尿液对其生长的影响；比较胶原酶活性，金属蛋白酶组织抑制因子-1（TIMP-1）以及Ⅰ型胶原含量在尿道瘢痕和正常尿道组织及体外培养的成纤维细胞中的差异；研究反义TIMP-1寡核苷酸对尿道瘢痕成纤维细胞增殖以及胶原酶活性的影响。

The rhOP-1 was renatured by dialyzing and reducing the concentration of urea after purification by chromatography. NIH3T3 cells proliferation was assayed with improved MTT method and the activity of ALP was analyzed with PNPP method. At the same time, its activity was analyzed by implanting rhOP-1 into thigh muscles of mouses in vivo.

采用改良MTT法检测rhOP-1对NIH3T3细胞增殖和对硝基苯酚法检测rhOP-1对细胞碱性磷酸酶活性的影响，同时在体内通过小鼠肌袋埋植实验测定rhOP-1活性。

When the virus was heated to over 73℃ for more than 10 minutes or over 71℃ for more than 30 minutes, the haemagglutinining activity was completely inactivated.

血凝活性的温度敏感性试验结果表明，73℃以上作用10分钟和71℃以上作用30分钟，血凝活性丧失。

The effects of gastrodine on the expression of glial fibrillary acidic protein, the transuding amount of lactic dehydrogenase, and the activity of nitric oxide synthase in cultured astrocytes of young rats with lesions caused by simulated cerebral ischemia and reperfusion, were determined in this experiment.

观察天麻素对脑缺血再灌注损伤星形胶质细胞胶原纤维酸性蛋白表达、乳酸脱氢酶漏出量以及一氧化氮合成酶活性的影响。结果：天麻素大、小剂量组GFAP纤维样改变减轻，强阳性反应细胞数减少；LDH漏出量下降；NOS活性减弱。

The dynamic changes of Ch0 in leaves showed different patterns, with little changes at different assaying points in the lower leaf and a single peak curve in the ear leaf and upper leaf.

Hill反应活力、Ca^2＋-ATPase活性和Mg^2＋-ATPase活性的变化规律不同，随生长进程表现不断下降、单峰曲线和双峰曲线等不同形式。

Twenty-four crossbred early weaned piglets with an average initial weight of 6.10±0.35kg,weaned at 28±1 day of age,were divided into four groups to determine the effect of supplemental acidifiers on gastric acid secretion,digestive enzyme activities, and intesinal microflora.

添加0.25 %复合酸提高了胃蛋白酶(P.10)和胃酸分泌(P.10)，显著提高了十二指肠内容物中胰蛋白酶和淀粉酶活性(P.05)，添加1.5 %柠檬酸有提高上述两种酶活性的趋势(P.15 ，P.10)，但对胃酸和胃蛋白酶分泌没有影响，显著降低了结肠大肠杆菌数量(P.05)。

Inhabition of NX0 and NX1 on the activities of fumaric reductase in tissue homogenate of cysticerci was tested. The results showed that the two kinds of benzimidazol carbamate drugs could inhabite the activity of fumaric reductase complex noncompetently.

测试了NX0和NX1对猪囊尾蚴组织匀浆延胡索酸还原酶活性的抑制作用，结果表明两种苯并咪唑氨基甲酸酯类药物非竞争性抑制延胡索酸还原酶复合体活性。

So it is concluded that the BP had immunotoxicity effects on haemocytes and the neutral red assay could be used as a sensitive index to evaluate the effect of B P on the haemocyte viability of scallop C. farreri.

由此可见，BP对栉孔扇贝血细胞活性具有免疫毒性作用，中性红比色法可以作为评价BP对栉孔扇贝血细胞免疫活性的敏感指标。

In BP exposure experiment, except that the neutral red assay showed that BP significantly inhibited the haemocyte viability, the other methods did not detect the inhibition effect, besides, the results of the neutral red assay showed that the inhibition degree had a positive correlation with the concentration and exposure time of BP.

采用中性红比色法检测BP对栉孔扇贝血细胞活性具有显著抑制作用，且抑制程度与BP作用浓度、时间呈正相关，其余方法均未检测出BP对血细胞活性的影响。

Second, effects of conservation tillage on soil enzyme activities. SS had higher urease activity and sucrase activity in 0~20cm soil layer.

2保护性耕作对土壤酶活性的影响深还0~20cm土层脲酶和蔗糖酶活性较高。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。