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Abstract

Medicine

灌注的空间测量,实体肿瘤间质流体压力和脂质体积累

Published: August 18th, 2016

DOI:

10.3791/54226

1Department of Medical Biophysics, University of Toronto, 2Leslie Dan Faculty of Pharmacy, University of Toronto, 3STTARR Innovation Centre, Princess Margaret Cancer Centre, 4Institute of Biomaterials and Biomedical Engineering, University of Toronto, 5Techna Institute, University Health Network, 6Radiation Medicine Program, Princess Margaret Cancer Centre

脂质体的异质肿瘤内积累是其功效的关键决定因素。既混沌肿瘤微循环和高架IFP被链接到基于纳米技术的药物递送系统的异质肿瘤内分布,如脂质体。在本研究中,肿瘤微循环,升高的IFP,和纳米颗粒的积累之间的关系,通过体内实验进行了研究。这是通过使用动态对比增强计算机断层扫描(DCE-CT)和使用连接到微CT扫描仪的新型图像引导的机器人针放置系统肿瘤IFP的测量肿瘤微循环的评估来实现的。脂质体的肿瘤内积聚是由纳米颗粒脂质体制剂稳定地包封造影剂碘海醇(CT-脂质体)的基于图像的CT评价来确定。 CT成像允许的空间分布的共定位肿瘤血流动力学,IFP和CT-脂质体蓄积在乳腺癌的个体皮下异种移植物小鼠模型。测量导致发现该灌注和血​​浆体积分数是脂质体的肿瘤内分布的强介体。此外,结果表明,IFP起着通过调节血流介导的脂质体分布的间接作用。

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