The washed and dried porous silica gel was soaked in water glass of moderate viscosity, then mixed with nanometer TiO 2, stired until TiO 2 has been uniformly distributed on the porous silica gel. After dried naturall...The washed and dried porous silica gel was soaked in water glass of moderate viscosity, then mixed with nanometer TiO 2, stired until TiO 2 has been uniformly distributed on the porous silica gel. After dried naturally, it was calcined at 300 ℃ for 1 h to give the immobilized nanometer TiO 2 which was mechanically and chemically stable, and can be reused. Under the illumination of high pressure Hg lamp, the X 3B dye could be degraded almost quantitatively(98%) in a solution containing the photocatalyst, Fe 3+ and H 2O 2 with bubbling of air.展开更多
H9c2细胞是来源于大鼠胚胎心脏组织的成肌细胞系,B组柯萨奇病毒(group B Coxsackievirus,CVB)是心肌炎和扩张型心肌病的主要病原。本研究观察了CVB3在H9c2细胞中的感染性,探讨H9c2细胞是否可用于CVB致心肌疾病的实验研究。用整合了增强...H9c2细胞是来源于大鼠胚胎心脏组织的成肌细胞系,B组柯萨奇病毒(group B Coxsackievirus,CVB)是心肌炎和扩张型心肌病的主要病原。本研究观察了CVB3在H9c2细胞中的感染性,探讨H9c2细胞是否可用于CVB致心肌疾病的实验研究。用整合了增强型绿色荧光蛋白(EGFP)或海肾荧光素酶(RLuc)的CVB3重组株EGFP-CVB3、RLuc-CVB3攻击H9c2细胞及大、小鼠原代心肌细胞和骨骼肌细胞,应用荧光显微镜、流式细胞术和化学发光技术观察感染细胞的EGFP和RLuc表达,应用反转录-聚合酶链反应(RT-PCR)方法检测病毒在核酸水平的表达。结果显示,在病毒攻击的H9c2细胞未检测到EGFP和RLuc表达;RT-PCR显示在CVB3感染9 d后检测不到CVB3 RNA;CVB3毒株可感染小鼠心肌细胞、骨骼肌细胞和大鼠心肌细胞,但不感染大鼠骨骼肌细胞和H9c2细胞。本研究结果表明,H9c2细胞不是CVB3易感细胞,不能用于CVB3致心肌疾病的研究;该结果从病毒感染方面也支持H9c2具有大鼠骨骼肌细胞表型。展开更多
文摘The washed and dried porous silica gel was soaked in water glass of moderate viscosity, then mixed with nanometer TiO 2, stired until TiO 2 has been uniformly distributed on the porous silica gel. After dried naturally, it was calcined at 300 ℃ for 1 h to give the immobilized nanometer TiO 2 which was mechanically and chemically stable, and can be reused. Under the illumination of high pressure Hg lamp, the X 3B dye could be degraded almost quantitatively(98%) in a solution containing the photocatalyst, Fe 3+ and H 2O 2 with bubbling of air.
文摘H9c2细胞是来源于大鼠胚胎心脏组织的成肌细胞系,B组柯萨奇病毒(group B Coxsackievirus,CVB)是心肌炎和扩张型心肌病的主要病原。本研究观察了CVB3在H9c2细胞中的感染性,探讨H9c2细胞是否可用于CVB致心肌疾病的实验研究。用整合了增强型绿色荧光蛋白(EGFP)或海肾荧光素酶(RLuc)的CVB3重组株EGFP-CVB3、RLuc-CVB3攻击H9c2细胞及大、小鼠原代心肌细胞和骨骼肌细胞,应用荧光显微镜、流式细胞术和化学发光技术观察感染细胞的EGFP和RLuc表达,应用反转录-聚合酶链反应(RT-PCR)方法检测病毒在核酸水平的表达。结果显示,在病毒攻击的H9c2细胞未检测到EGFP和RLuc表达;RT-PCR显示在CVB3感染9 d后检测不到CVB3 RNA;CVB3毒株可感染小鼠心肌细胞、骨骼肌细胞和大鼠心肌细胞,但不感染大鼠骨骼肌细胞和H9c2细胞。本研究结果表明,H9c2细胞不是CVB3易感细胞,不能用于CVB3致心肌疾病的研究;该结果从病毒感染方面也支持H9c2具有大鼠骨骼肌细胞表型。
