Myopic choroidal neovascularization(m CNV), one of the complications of pathological myopia, is also one of the leading causes of visual impairment worldwide. The socioeconomic impact of mC NV in Asian countries is pa...Myopic choroidal neovascularization(m CNV), one of the complications of pathological myopia, is also one of the leading causes of visual impairment worldwide. The socioeconomic impact of mC NV in Asian countries is particularly significant due to the rising incidence of pathological myopia. There have been major advances in the treatment of mC NV in the past few years. Previous treatment modalities, such as thermal laser photocoagulation and photodynamic therapy, aimed to prevent vision loss;however, newer modalities such as intravitreal anti-vascular endothelial growth factor(VEGF) agents have been shown to successfully restore vision in many patients. Challenges remain as long term safety and efficacy of anti-VEGF agents are unknown. This article aims to provide a review of the literature of the epidemiology, progression, clinical course and treatment modalities as well as areas of future developments related to myopic CNV.展开更多
目的体外震波治疗能促进缺血组织的血管新生和加速侧支循环建立,但其具体作用机制尚不明确。探讨0.09 m J/mm2的体外震波对人脐静脉内皮细胞(human umbilical vein endothelial cells,HUVECs)增殖及血管内皮生长因子(vascular endotheli...目的体外震波治疗能促进缺血组织的血管新生和加速侧支循环建立,但其具体作用机制尚不明确。探讨0.09 m J/mm2的体外震波对人脐静脉内皮细胞(human umbilical vein endothelial cells,HUVECs)增殖及血管内皮生长因子(vascular endothelial growth factor,VEGF)、白细胞介素-8(interleukin-8,IL-8)变化的影响。方法实验分为实验组和对照组,对照组试管置于震波仪器中但不进行震波处理,实验组以0、0.03、0.09、0.18、0.24 m J/mm2震波能量冲击,每孔加CCK8溶液,用酶标仪测定在波长450 nm处的A值。对体外培养的HUVECs细胞株施予0.09 m J/mm2能量的震波处理,CCK8比色法检测细胞增殖情况,Real-time PCR法和流式细胞术分别检测低能量超声波处理后细胞因子VEGF、IL-8 mRNA表达和蛋白质的变化。结果 1CCK8比色法检测结果显示实验组中只有0.09 m J/mm2能量A450值与对照组比,差异有统计学意义(0.70±0.04 vs0.54±0.09,P<0.05),而其他能量与对照组比,差异无统计学意义(P>0.05);2RT-PCR结果显示0.09 m J/mm2能量时HUVECs VEGF、IL-8 mRNA的表达(7.93±0.90、7.34±1.67)均较对照组(1.07±0.40、1.00±0.09)明显升高(P<0.01)。3流式细胞术检测结果显示与对照组相比,0.09 m J/mm2能量时HUVECs VEGF、IL-8蛋白表达(39.89±4.79、31.33±5.61)均较对照组(20.98±3.30、22.60±3.76)明显升高(P<0.05)。结论体外低能量震波可促进HUVECs增殖和增加VEGF、IL-8的表达,VEGF、IL-8的表达增加可在体外震波促进血管新生机制中起重要作用。展开更多
文摘Myopic choroidal neovascularization(m CNV), one of the complications of pathological myopia, is also one of the leading causes of visual impairment worldwide. The socioeconomic impact of mC NV in Asian countries is particularly significant due to the rising incidence of pathological myopia. There have been major advances in the treatment of mC NV in the past few years. Previous treatment modalities, such as thermal laser photocoagulation and photodynamic therapy, aimed to prevent vision loss;however, newer modalities such as intravitreal anti-vascular endothelial growth factor(VEGF) agents have been shown to successfully restore vision in many patients. Challenges remain as long term safety and efficacy of anti-VEGF agents are unknown. This article aims to provide a review of the literature of the epidemiology, progression, clinical course and treatment modalities as well as areas of future developments related to myopic CNV.
文摘目的体外震波治疗能促进缺血组织的血管新生和加速侧支循环建立,但其具体作用机制尚不明确。探讨0.09 m J/mm2的体外震波对人脐静脉内皮细胞(human umbilical vein endothelial cells,HUVECs)增殖及血管内皮生长因子(vascular endothelial growth factor,VEGF)、白细胞介素-8(interleukin-8,IL-8)变化的影响。方法实验分为实验组和对照组,对照组试管置于震波仪器中但不进行震波处理,实验组以0、0.03、0.09、0.18、0.24 m J/mm2震波能量冲击,每孔加CCK8溶液,用酶标仪测定在波长450 nm处的A值。对体外培养的HUVECs细胞株施予0.09 m J/mm2能量的震波处理,CCK8比色法检测细胞增殖情况,Real-time PCR法和流式细胞术分别检测低能量超声波处理后细胞因子VEGF、IL-8 mRNA表达和蛋白质的变化。结果 1CCK8比色法检测结果显示实验组中只有0.09 m J/mm2能量A450值与对照组比,差异有统计学意义(0.70±0.04 vs0.54±0.09,P<0.05),而其他能量与对照组比,差异无统计学意义(P>0.05);2RT-PCR结果显示0.09 m J/mm2能量时HUVECs VEGF、IL-8 mRNA的表达(7.93±0.90、7.34±1.67)均较对照组(1.07±0.40、1.00±0.09)明显升高(P<0.01)。3流式细胞术检测结果显示与对照组相比,0.09 m J/mm2能量时HUVECs VEGF、IL-8蛋白表达(39.89±4.79、31.33±5.61)均较对照组(20.98±3.30、22.60±3.76)明显升高(P<0.05)。结论体外低能量震波可促进HUVECs增殖和增加VEGF、IL-8的表达,VEGF、IL-8的表达增加可在体外震波促进血管新生机制中起重要作用。
