Poroelastic modeling of magnetic nanoparticle hyperthermia: Effects of infusion-induced tissue deformation on drug distribution and thermal damage

IF 2.9 2区 生物学 Q2 BIOLOGY
Aishik Dinda, Sujit Nath
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引用次数: 0

Abstract

This study presents a comprehensive poroelastic modeling approach to investigate the effects of infusion-induced tissue deformation on drug distribution and thermal damage during magnetic nanoparticle (MNP) hyperthermia treatment. A three-dimensional computational model of a breast tumor nodule was developed, which incorporated interstitial fluid flow, nanoparticle transport, and heat transfer. The model accounted for the elastic deformation of the soft tissue caused by the infusion pressure at the needle tip. Comparative analyses were performed using a simplified Darcy model to highlight the significance of poroelasticity in capturing complex fluid-structure interactions within the tumor microenvironment. The results revealed that tissue deformation led to the formation of fluid pockets near the infusion site, reducing interstitial fluid pressure (IFP) and altering nanoparticle concentration profiles. Pharmacokinetic assessments using the area under the curve (AUC) indicated that larger nanoparticles with higher initial concentration, enhanced the drug-tissue contact duration, particularly in the tumor region. However, the clustering of nanoparticles within the fluid pockets hinders their magnetic relaxation, leading to a decrease in the specific absorption rate and a delay in thermal damage. This study emphasizes the importance of considering infusion-induced tissue mechanics in the design and optimization of magnetic nanoparticle hyperthermia treatments. These findings provide valuable insights into the complex interplay between drug delivery, tissue deformation, and thermal therapy, paving the way for more effective and precise cancer treatment strategies.
磁性纳米颗粒热疗的孔弹性建模:输注诱导的组织变形对药物分布和热损伤的影响
本研究提出了一种综合的孔隙弹性建模方法来研究磁纳米颗粒(MNP)热疗过程中输液诱导的组织变形对药物分布和热损伤的影响。建立了乳腺肿瘤结节的三维计算模型,该模型考虑了组织间流体流动、纳米颗粒输送和热传递。该模型考虑了针尖处注射压力引起的软组织弹性变形。使用简化的Darcy模型进行比较分析,以强调孔隙弹性在捕获肿瘤微环境中复杂的流体-结构相互作用方面的重要性。结果表明,组织变形导致输液部位附近形成液袋,降低间隙液压力(IFP),改变纳米颗粒浓度分布。使用曲线下面积(AUC)进行的药代动力学评估表明,初始浓度较高的更大的纳米颗粒延长了药物与组织的接触时间,特别是在肿瘤区域。然而,纳米颗粒在流体口袋中的聚集阻碍了它们的磁弛豫,导致比吸收率降低和热损伤延迟。本研究强调了在设计和优化磁性纳米颗粒热疗时考虑输注诱导的组织力学的重要性。这些发现为药物传递、组织变形和热疗法之间复杂的相互作用提供了有价值的见解,为更有效和精确的癌症治疗策略铺平了道路。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of thermal biology
Journal of thermal biology 生物-动物学
CiteScore
5.30
自引率
7.40%
发文量
196
审稿时长
14.5 weeks
期刊介绍: The Journal of Thermal Biology publishes articles that advance our knowledge on the ways and mechanisms through which temperature affects man and animals. This includes studies of their responses to these effects and on the ecological consequences. Directly relevant to this theme are: • The mechanisms of thermal limitation, heat and cold injury, and the resistance of organisms to extremes of temperature • The mechanisms involved in acclimation, acclimatization and evolutionary adaptation to temperature • Mechanisms underlying the patterns of hibernation, torpor, dormancy, aestivation and diapause • Effects of temperature on reproduction and development, growth, ageing and life-span • Studies on modelling heat transfer between organisms and their environment • The contributions of temperature to effects of climate change on animal species and man • Studies of conservation biology and physiology related to temperature • Behavioural and physiological regulation of body temperature including its pathophysiology and fever • Medical applications of hypo- and hyperthermia Article types: • Original articles • Review articles
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