{"title":"Poroelastic modeling of magnetic nanoparticle hyperthermia: Effects of infusion-induced tissue deformation on drug distribution and thermal damage","authors":"Aishik Dinda, Sujit Nath","doi":"10.1016/j.jtherbio.2025.104235","DOIUrl":null,"url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":17428,"journal":{"name":"Journal of thermal biology","volume":"132 ","pages":"Article 104235"},"PeriodicalIF":2.9000,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of thermal biology","FirstCategoryId":"99","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0306456525001925","RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOLOGY","Score":null,"Total":0}
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.
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