查询词典 hypoxia

Objective To investigate the effect of acute hypoxia on blood pressure and heart rate in mice after hypoxia preconditioning.

目的 探讨经缺氧预处理后，急性低氧对大鼠血压和HR的影响。

High expression of thesegenes correlate to hypoxia is the intrinsic factor of the hypoxia adaptation of zokors.

这些与低氧相关基因的高表达是甘肃鼢鼠适应低氧环境的内因。

SW480 and SW620 cells were also used to study the gene regulation with high carbohydrate intake, where it was shown that during glycolysis eight genes, HK1 (nuclear gene encoding mitochondrial protein, transcript variant 1), GPI, GAPD (glyceraldehyde-3-phosphate dehydrogenase), PGK1 (phosphoglycerate kinase 1), PGK2 (phosphoglycerate kinase 2), ENO2 (enolase 2), PKM2 (pyruvate kinase, muscle, transcript variant 2) and GLUT1 (facilitated glucose transporter, member 1) are over-expressed. In our study, we also found that during hypoxia of cancer tissues the resulting up-regulation of HIF-2α(hypoxia-inducible factor 2, alpha subunit) would in turn up-regulate the GLU1 gene, further activating glycolysis.

另一方面，在高碳水化合物的调控研究上，吾人也利用SW480和SW620细胞株分析证实醣解水解活化过程中，其六碳醣激酶-1(HK1)、葡萄糖磷酸异构酶、3-磷酸甘油醛脱氢酶、磷酸甘油酸激酶-1(PGK1)、磷酸甘油酸激酶-2(PGK2)、烯醇酶-2(ENO2)、丙酮酸激酶-2(PKM2)以及葡萄糖输送蛋白-1(GLUT1)等共有8个基因是连续上升的过度表现；此外，吾人也发现当癌细胞在缺氧的组织中，其缺氧转录子-2α基因(HIF-2α)表现上升后，会活化GLU1基因上升，进一步活化醣解代谢的进行。

METHODS: Serum and PMNs were separated from rats under normoxia, acute hypoxia and chronic hypoxia condition, and cell aspiration technology system was used to determine the chemotactic migration of pseudopod of PMNs induced by serum as chemotactic factor.

应用细胞微管吸吮实验技术，从单细胞角度研究在血清趋化作用下不同缺氧状态PMNs伪足生长的变化。

Results In hypoxia control group, the time for OPS to disappear was (186±16) seconds; HIP occurred in all slices within about 10 minutes of hypoxia and lasted for (113±16) seconds. When normal ACSF superfusion was restored, the rates of OPS recovery and OPS amplitude were 25% and (30±23)% respectively.

结果 缺氧组OPS消失时间为(186±26)s，在缺氧10min左右，均出现HIP，持续时间为(113±16)s；恢复供氧后，OPS恢复率和恢复幅度分别为25%和(30±23)%。

By superfusion of ET-1,the hypoxia-induced decrease in RPF was remarkably potentiated and the occurrence of pacemaker arrest was shifted to an earlier time. The h3,poxia-induced effects could be effectively attenuated after pretreatment with BQ-123,implying the role of endogenous ET-1 release in hypoxia-induced effects.

ET-1可显著加重缺氧所致的RPF降低，使起搏细胞停跳时间前移；而以ET*受体阻断剂BQ-123预处理窦房结标本后，则能有效地缓解缺氧对起搏细胞的效应，提示内源性ET-1的释放在缺氧效应中的作用。

The experiments showed a significant increase in Bax mRNA levels (P.01) in neurons cultured at severe hypoxia condition compared with those cultured at normoxia. In hypoxia groups, tolbutamide increased Bax mRNA expression (P.05), while diazoxide reduced it (n=5 for each).

缺氧+二氮嗪组中基因Bax的mRNA表达水平与单纯缺氧组相比下降(P.01)，缺氧＋甲苯磺丁脲组中基因Bax的mRNA表达水平相对于单纯缺氧组也有提高(P.05)。

Objective To investigate the influence of hypoxia on the expressions of hypoxia inducible factor 1α and vascular endothelial growth factor,the angiogenic response and its mechanism.

目的：探讨缺氧对人胶质瘤细胞株U251缺氧诱导因子-1α和血管内皮生长因子表达及血管生成反应的影响及机制。

The result indicates that Bassia rapa L. 65%, 95% alcohol extract and water extract can prolong the survival time of mice in hypoxia under ordinary pressures significantly. It can also prolong the survival time of mice with acute cerebral ischemia and sodium nitrite significantly, and increase the number of erythrocytes and the content of hemoglobin. It demonstrates that Bassia rapa L. extract has anti-hypoxia activity.

结果表明，芫根水提取物、65%乙醇提取物及95%乙醇提取物均能明显延长模型小鼠在常压缺氧、急性脑缺血性缺氧及亚硝酸钠中毒时的存活时间，并可增加外周血象中红细胞数与血红蛋白含量，显示芫根提取物具有抗缺氧活性。

But the charges Vick with campana, said the four near-death experiences of the subjects had never experienced the state of brain hypoxia, it should not be a near-death experiences the brain hypoxia causes.

我立即打电话给她的妹妹，她的回答是更可怕的：我的脑袋里的东西，我一闭上眼睛，她将可以使用我的手写字，在课堂上给你的信我写出…她说，想成为我的朋友，不会伤害谁，他们不害怕…。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。