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Video microscopy of vascular damage during PDT

机译:PDT期间血管损伤的视频显微镜检查

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Abstract: Photodynamic therapy (PDT) was performed in the chorioallantoic membrane (CAM) of the chick embryo. This is a convenient model to study vascular effects. PDT-induced damage was monitored continuously during irradiation and recorded on a VCR driven by a PC. Time-lapse video documentation provided a detailed view of the entire process: tumor growth, angiogenesis, vascularization, PDT, and tumor regression. Our particular interest was in resolving the controversy regarding the primary mechanism in PDT, as to whether the predominant damage is to the parenchymal tumor cells or to the vascular endothelium. Image analysis techniques enabled us to follow quantitatively changes occurring during the process. These changes included alternations in blood vessels (color and morphology) and in tumors (tumor area). !5
机译:摘要:在鸡胚的绒膜尿囊膜(CAM)中进行了光动力疗法(PDT)。这是研究血管效应的便捷模型。在辐照期间连续监测PDT引起的损害,并将其记录在PC驱动的VCR上。延时录像文档提供了整个过程的详细视图:肿瘤生长,血管生成,血管生成,PDT和肿瘤消退。我们特别感兴趣的是解决有关PDT主要机制是否是实质性肿瘤细胞或血管内皮损害的争议。图像分析技术使我们能够跟踪过程中发生的定量变化。这些变化包括血管(颜色和形态)和肿瘤(肿瘤区域)的交替。 !5

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