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In Association with
In vitro characterisation method for comparative evaluation of drug loaded embolic distal perfusion
Annual Conference and Expo on Biomaterials
Caine M, Capretto L, Carugo D, Zhang X, Hill M, Willis SL, Dreher MR and Lewis AL
Biocompatibles UK Ltd, UK
Posters & Accepted Abstracts: J Biotechnol Biomater
Abstract
In vitro biomimetic models have become increasingly utilised in the evaluation of medical devices over the last 30 years. Application in the field of Interventional Oncology for modelling purposes has been limited by the complexity of recreating biological vascular systems. Interventional Oncology and specifically embolisation, varies significantly in terms of its administration methodology. The specific process of blocking the primary blood supply to a hyper-vascularised tumour is anything but simple in terms of reproducibility and translation between patients, clinics and devices. Flow properties of drugloaded embolic microspheres have been shown to influence the distribution, contact diffusion and spatial drug elution kinetics within tumours. Moreover, variations in the administration style of the physician have been shown to play a significant part in the intra-tumoural distribution. To model the unique flow properties of various embolic products, novel in vitro microfluidic test systems have been developed. Through compartmentalised recreations of clinical conditions, it becomes possible to predict and evaluate relevant flow properties prior to use in vivo. This presentation will analyse the effect of channel flow rate (Reynold’s number) and embolic size of doxorubicin loaded DC Bead™ 70-150μm and 100-300μm within in vitro flow channels of sizes representative of distal hepatic microvasculature. The effect of whole bead distribution is considered as a vehicle for distal drug distribution utilising clinically representative injection volumes for modelling bolus effects. A significantly higher dose (p=0.017) is observed in smaller flow channels with 70-150μm vs 100-300μm trending with increased flow rates.Biography
Marcus is an Innovation Scientist at BTG. Initially focusing on analytical method development and validation, he is currently completing a part-time PhD with the University of Southampton in Applied Biomimetic Microfluidics and focusing on the application of this project to advancing treatment in the field of interventional oncology and pulmonology.
Email: mgc1u11@soton.ac.uk
