Objective: This study aims to investigate the effects of urocortin (Ucn) on the viability of endothelial cells (ECV304) and rat vascular muscle cells (VSMC). Methods: Rat aortic VSMC were isolated from the rats' t...Objective: This study aims to investigate the effects of urocortin (Ucn) on the viability of endothelial cells (ECV304) and rat vascular muscle cells (VSMC). Methods: Rat aortic VSMC were isolated from the rats' thoracic aorta. We studied the effect of Ucn on the viability of ECV304 cells and VSMC by using a tetrazolium (MTT) assay.Results: Ucn (10 -7 mol/L) inhibited the viability of ECV304 cells and VSMC. Inhibition rates are 13% and 15%, respectively(P<0.05, compared with Control). This inhibition was not dependent on the affecting time and was not affected by the addition of ATP-sensitive potassium channel (KATP channel) blocker, glybenclamide (Gly, 10 mol/L). Conclusion: Ucn inhibits the viability of ECV304 and VSMC. Our results suggest that Ucn may be a new vasoactive agent and may have a beneficial effect in the process of vascular remodeling (VR).展开更多
The enrichment of chloride anion within the occluded cell （OC） for Type 304 austenitic stainless steel in low chloride concentration solution has been investigated by means of a simulated OC. The influence of the en...The enrichment of chloride anion within the occluded cell （OC） for Type 304 austenitic stainless steel in low chloride concentration solution has been investigated by means of a simulated OC. The influence of the enrichment of chloride anion on stress corrosion crack （SCC） of Type 304 stainless steel has been studied. It was observed that the amount of chloride anion migration was proportional to the charge flowing through the anode. Owning to the effects of enrichment of chloride anion, low chloride concentration solution could induce SCC for Type 304 stainless steel.展开更多
目的了解缺氧后ECV-304细胞钙/钙调蛋白依赖性丝氨酸蛋白激酶(calcium/calmodulin-dependent serine protein kinase,CASK)蛋白表达及细胞内分布的变化。方法将培养的ECV-304细胞置于缺氧(5%O2)条件培养1、3、6、12h,用Western blot方...目的了解缺氧后ECV-304细胞钙/钙调蛋白依赖性丝氨酸蛋白激酶(calcium/calmodulin-dependent serine protein kinase,CASK)蛋白表达及细胞内分布的变化。方法将培养的ECV-304细胞置于缺氧(5%O2)条件培养1、3、6、12h,用Western blot方法检测CASK表达的变化,用免疫组化技术观察CASK在细胞内分布情况。结果ECV-304细胞的CASK表达随缺氧时间延长而逐渐增高,3h开始增加,6h达高峰,12h下降但仍高于正常。免疫组织化学染色的结果显示,随着缺氧时间的延长,细胞染色加深、并出现CASK向核膜聚集的现象。结论缺氧可以影响CASK的蛋白表达和细胞内分布,提示CASK可能是一个新的值得关注的缺氧相关蛋白。展开更多
文摘Objective: This study aims to investigate the effects of urocortin (Ucn) on the viability of endothelial cells (ECV304) and rat vascular muscle cells (VSMC). Methods: Rat aortic VSMC were isolated from the rats' thoracic aorta. We studied the effect of Ucn on the viability of ECV304 cells and VSMC by using a tetrazolium (MTT) assay.Results: Ucn (10 -7 mol/L) inhibited the viability of ECV304 cells and VSMC. Inhibition rates are 13% and 15%, respectively(P<0.05, compared with Control). This inhibition was not dependent on the affecting time and was not affected by the addition of ATP-sensitive potassium channel (KATP channel) blocker, glybenclamide (Gly, 10 mol/L). Conclusion: Ucn inhibits the viability of ECV304 and VSMC. Our results suggest that Ucn may be a new vasoactive agent and may have a beneficial effect in the process of vascular remodeling (VR).
文摘The enrichment of chloride anion within the occluded cell （OC） for Type 304 austenitic stainless steel in low chloride concentration solution has been investigated by means of a simulated OC. The influence of the enrichment of chloride anion on stress corrosion crack （SCC） of Type 304 stainless steel has been studied. It was observed that the amount of chloride anion migration was proportional to the charge flowing through the anode. Owning to the effects of enrichment of chloride anion, low chloride concentration solution could induce SCC for Type 304 stainless steel.
文摘目的了解缺氧后ECV-304细胞钙/钙调蛋白依赖性丝氨酸蛋白激酶(calcium/calmodulin-dependent serine protein kinase,CASK)蛋白表达及细胞内分布的变化。方法将培养的ECV-304细胞置于缺氧(5%O2)条件培养1、3、6、12h,用Western blot方法检测CASK表达的变化,用免疫组化技术观察CASK在细胞内分布情况。结果ECV-304细胞的CASK表达随缺氧时间延长而逐渐增高,3h开始增加,6h达高峰,12h下降但仍高于正常。免疫组织化学染色的结果显示,随着缺氧时间的延长,细胞染色加深、并出现CASK向核膜聚集的现象。结论缺氧可以影响CASK的蛋白表达和细胞内分布,提示CASK可能是一个新的值得关注的缺氧相关蛋白。
