目的:观察血管密度与血管内皮生长因子受体2(VEGFR2)在痔黏膜及黏膜下组织的表达,探讨VEGFR2在痔病发生机制中的作用。方法:痔患者组随机选取60例,正常对照组20例。测定痔患者和对照组的肛管静息压(RASP)、肛管收缩压(MASP)、直肠感知阈...目的:观察血管密度与血管内皮生长因子受体2(VEGFR2)在痔黏膜及黏膜下组织的表达,探讨VEGFR2在痔病发生机制中的作用。方法:痔患者组随机选取60例,正常对照组20例。测定痔患者和对照组的肛管静息压(RASP)、肛管收缩压(MASP)、直肠感知阈值(RSTV)、直肠最大容量阈值(RMTV),免疫组化检测组织中VEGFR2蛋白表达水平和微血管密度(MVD),RT-PCR方法检测组织中VEGFR2 m RNA的表达丰度。结果:痔组织与正常肛垫相比存在着明显的新生血管形成,痔组织与对照组中的MVD均值分别为5.59±0.98、3.92±0.81(P<0.05);VEGFR2染色评分分别为5.95±1.01、2.32±0.72(P<0.05),痔组织中VEGFR2 m RNA表达丰度明显强于对照组(P<0.05)。结论:VEGFR2在痔垫的微血管生成发展中起着重要的作用,可能与痔病的发生及临床症状密切相关。展开更多
Angiogenesis, or the formation of new blood vessels out of pre-existing capillaries, is very important in many physiologic and pathologic processes, such as embryonic development, cancer, retinopathies, etc. Vascular ...Angiogenesis, or the formation of new blood vessels out of pre-existing capillaries, is very important in many physiologic and pathologic processes, such as embryonic development, cancer, retinopathies, etc. Vascular endothelial growth factor receptor-2 (VEGFR-2) plays a key role in angiogenesis. In this review, we discussed the structure, function and signal transduction of vascular endothelial growth factor receptor-2. Understanding these should provide important insights into how new strategies can be devised to interfere in the physiologic and pathologic processes involved in angiogensis. [展开更多
文摘目的:观察血管密度与血管内皮生长因子受体2(VEGFR2)在痔黏膜及黏膜下组织的表达,探讨VEGFR2在痔病发生机制中的作用。方法:痔患者组随机选取60例,正常对照组20例。测定痔患者和对照组的肛管静息压(RASP)、肛管收缩压(MASP)、直肠感知阈值(RSTV)、直肠最大容量阈值(RMTV),免疫组化检测组织中VEGFR2蛋白表达水平和微血管密度(MVD),RT-PCR方法检测组织中VEGFR2 m RNA的表达丰度。结果:痔组织与正常肛垫相比存在着明显的新生血管形成,痔组织与对照组中的MVD均值分别为5.59±0.98、3.92±0.81(P<0.05);VEGFR2染色评分分别为5.95±1.01、2.32±0.72(P<0.05),痔组织中VEGFR2 m RNA表达丰度明显强于对照组(P<0.05)。结论:VEGFR2在痔垫的微血管生成发展中起着重要的作用,可能与痔病的发生及临床症状密切相关。
文摘Angiogenesis, or the formation of new blood vessels out of pre-existing capillaries, is very important in many physiologic and pathologic processes, such as embryonic development, cancer, retinopathies, etc. Vascular endothelial growth factor receptor-2 (VEGFR-2) plays a key role in angiogenesis. In this review, we discussed the structure, function and signal transduction of vascular endothelial growth factor receptor-2. Understanding these should provide important insights into how new strategies can be devised to interfere in the physiologic and pathologic processes involved in angiogensis. [
