查询词典 preconditioning

Objective To investigate the myocardioprotective effects of adenosine preconditioning in patients undergoing open heart surgery.

目的 探讨腺苷预处理对心脏直视手术的心肌保护效果。

Methods:48 male SD rats,weighting 250-300 g,were divided into 4 groups,each group had 12 rats,they are normal control group,ischemic/reperfusion group,ischemic preconditioning group(Ⅲ group,Murry method) and adnine sulphate preconditioning group.

实验采用体重为250-300 g雄性SD大鼠48只，分4组，每组12只，即正常对照组；缺血再灌组；经典缺血预处理组；硫酸腺嘌呤预处理组。

Since the findings of Murry and Currie et al . that ischemic preconditioning and heat shock response could protect evidently myocardium against ischemia-reperfusion injury in the middle of 1980s, endogenous myocardial protection has drawn widespread attentions.

摘 要：自上世纪80年代中期Murry及Currie等分别发现缺血预适应(ischemic preconditioning， IPC)与热休克反应(heat shock response， HSR)具有明显的心肌保护作用以来，有关心肌内源性保护作用的研究引起了学术界的广泛关注。

Results DOX pre-conditioning and IP significantly decreased serum AST,ALT and LDH,furthermore interaction of DOX preconditioning and IP had statistical significance and associating application of the two methods decrease serum AST,ALT and LDH to a lower level.IP significantly decreased plasma ET and serum TNF-α;DOX and IP significantly increased serum NO;DOX preconditioning improved the expression of HSP70in liver.

结果 阿霉素预处理、缺血预处理、阿霉素+缺血联合预处理能明显抑制AST、ALT、LDH水平升高，其中以阿霉素+缺血联合预处理作用最显著；缺血预处理能显著降低ET、TNF-α水平；阿霉素预处理和缺血预处理使NO显著升高；阿霉素预处理能使肝细胞HSP70显著增加。

Methods: 18 healthy new-zealand rabbits were randomly divided into 3 groups (6 for each group): ischemic reperfusion group,ischemic preconditioning group and ischemic preconditioning combined with pyrrolidine dithiocarbamata group (group IPC+PDTC).

选择健康新西兰大白兔18只，随机分为缺血再灌注组(ischemic reperfusion， IR)，缺血预处理组(ischemic preconditioning ，IPC)及缺血预处理联合PDTC组，每组6只。

Recently, with profound studies of ischemic preconditioning, protective effect of remote organ preconditioning which was a brief episode of sublethal ischemia in an organ remote from the target organ, was found.

近来，随着缺血预处理研究的深入，发现了远隔器官缺血预处理现象，为采用非生命器官的短暂亚致死性缺血预处理对抗心脑等生命器官的缺血/再灌注损伤提供了线索。

The incidence rates and duration of ventricular dilation-induced arrhythmias in each of verapamil, chelerythrine or glibenclamide group were similar to those in control group. Conclusion Ventricular dilation may induce arrhythmias in isolated rat hearts, which is inhibited by ischemic preconditioning. The transient increase in [Ca(superscript 2+)] appeared to be a triggering factor in the process of ischemic preconditioning. K channel PKC might also play an important roles in this process.

对大鼠心室进行膨胀可诱发心律失常；缺血预适应对心律失常的发生具有抑制作用；细胞内钙离子浓度的短暂升高可能是缺血预适应发挥抑制作用的驱动因子；ATP敏感性钾通道及蛋白激酶C在缺血预适应过程中可能发挥了重要作用。

All HSCT patients were divided into aGVHD group ( 43 cases), thrombus group (TMA, HVOD, arterial and phlebothrombosis, 5cases) and infection group (31cases).1.2 Specimen collection and cytokines detectionThe serum specimen of all patients undergoing allogeneic hematopoietic stem cell transplant were collected once a week in the morning from preconditioning, 4 days after preconditioning until the time when they were discharged from hospital, 20 healthy adults were detected as normal controls.

根据并发症的发生情况诊为急性移植物抗宿主病组43例、血栓组(包括TMA、HVOD、动静脉血栓)5例和感染组31例。1.2标本收集与细胞因子指标检测清晨空腹静脉采集移植患者的外周血，采集时间为预处理前，预处理开始第4天，预处理结束后至出院之间各周外周血标本，每周一次。20名健康成人作为对照。

objective to investigate whether hypoxia preconditioning exist in adipose tissue,and construct the hypoxemic model of adipose tissue.methods after injected different density cocl2 to rat's subcutaneously of groin,use immunohistochemical method detect hif-1α protein,and use rt-pcr detect hif-1α mrna.results after injected different density cocl2,the adipose tissue of rat's groin express different degree of hif-1αprotein and hif-1αmrna.,and reach the peak when the density is 20-40 mg/kg and the time is 3 h.conclusion hypoxia preconditioning exist in adipose tissue,and the effect of preconditioning is most evidence when the density is 20-40 mg/kg and the time is 3 h.

目的 探讨脂肪组织中是否存在缺氧预适应现象，构建cocl2致缺氧的缺氧模型。方法不同浓度的cocl2大鼠腹股沟区皮下层浸润注射，分别用免疫组织化学法和rt-pcr法检测该区脂肪hif-1α蛋白和hif-1α mrna的表达情况。结果用不同浓度的cocl2行化学缺氧后在不同时间点观察有不同程度的hif-1α蛋白和hif-1α mrna表达，其中，在浓度为20～40 mg/kg，时间为3 h时脂肪组织中hif-1α表达达高峰。结论脂肪组织存在缺氧预适应现象；cocl2的浓度选择20～40 mg/kg，时间选择3 h时缺氧预适应效果较佳。

When the coefficient matrice is index p cycle matrice (p = 3,4,5),we educe the relation between preconditionging Jacobi 、 GS iterative matrices" and classical Jacobi iterative matrices" eigenvalue; As an application, make some preconditioning iterative factors, when classical Jacobi iterative converge, the preconditioning iterative methods may converge faster.

2系数矩阵是指数p=3，4，5循环矩阵时，分别给出了预条件Jacobi、Gauss-Seidel迭代矩阵与传统块Jacobi迭代矩阵二者特征值之间的关系，作为一个应用，通过预条件因子的特殊取值，使传统Jacobi迭代收敛时，预条件块迭代法的收敛速度成倍提高。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。