Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
To modulate the properties of degradable implants from outside of the human body represents a major challenge in the field of biomaterials. Polylactic acid is one of the most used polymers in biomedical applications, but it tends to lose its mechanical properties too quickly during degradation. In the present study, a way to reinforce poly-L lactic acid (PLLA) with magnetic nanoparticles (MNPs) that have the capacity to heat under radiofrequency electromagnetic fields (EMF) is proposed. As mechanical and degradation properties are related to the crystallinity of PLLA, the aim of the work was to explore the possibility of modifying the structure of the polymer through the heating of the reinforcing MNPs by EMF within the biological limit range · < 5·× 10 Am·s. Composites were prepared by dispersing MNPs under sonication in a solution of PLLA. The heat released by the MNPs was monitored by an infrared camera and changes in the polymer were analyzed with differential scanning calorimetry and nanoindentation techniques. The crystallinity, hardness, and elastic modulus of nanocomposites increase with EMF treatment.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8347328 | PMC |
| http://dx.doi.org/10.3390/ma14154300 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A thermochromic tissue-mimicking phantom for catheter-based radiofrequency ablation of heterogenous lesions.
Med Phys
September 2025
School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, P.R. China.
Background: In catheter-based radiofrequency ablation (RFA), energy is delivered to heterogeneous thin-walled tissues to induce therapeutic heating. Variations in electrical and mechanical properties of tissue contents have a great effect on outcomes.
Purpose: The objective of this study is to develop models that replicate tissue heterogeneity and visualize ablation zones for effective evaluation and optimization.
Multi-frequency electromagnetic radiation promoted hepatic lipid metabolism via the adiponectin pathway in mice.
Ecotoxicol Environ Saf
September 2025
Beijing Key Laboratory for Radiobiology, Beijing Institute of Radiation Medicine, Beijing 100850, China. Electronic address:
Radiofrequency electromagnetic radiation (RF-EMR) is ubiquitous in daily life, and the complexity of the electromagnetic environment continues to increase. Nevertheless, research on the biological effects of compound radiofrequency radiation-particularly its influence on lipid metabolism under realistic exposure scenarios-remains limited, and the underlying mechanisms are not yet fully elucidated. To investigate the impact of compound radiofrequency radiation on lipid metabolism, multi-frequency radiation exposure model both normal and obese mice were established.
View Article and Find Full Text PDFLooking for Biomarkers Which May Explain Idiopathic Environmental Intolerance Attributed to Electromagnetic Fields (IEI-EMF): Does RF-EMF Exposure Influence Salivary Cortisol Response?
Bioelectromagnetics
September 2025
Australian Centre for Electromagnetic Bioeffects Research, Wollongong, Australia.
In order to understand Idiopathic Environmental Intolerance attributed to Electromagnetic Fields (IEI-EMF), it has been argued that it is crucial to test for effects of radiofrequency electromagnetic fields (RF-EMF) on biomarkers, given that they can be more objective than symptom reports. While no clear evidence links RF-EMF exposure to biomarker changes, research remains limited and largely speculative due to the lack of known bioeffect mechanisms. However, there is in vitro evidence that cortisol is affected by heating, which, as RF-EMF causes heating, raises the possibility that RF-EMF exposure may increase cortisol via thermally mediated processes.
View Article and Find Full Text PDFAltered development in rodent brain cells after 900 MHz radiofrequency exposure.
Neurotoxicology
September 2025
PERITOX Laboratory (UMR_I 01), UPJV/INERIS INERIS, MIV/TEAM, Verneuil-en-Halatte France University of Picardie Jules Verne, CURS, Amiens, France.
Health risks related to 900 MHz 2 G frequency exposure remain inconclusive under current regulatory standards. Research into potential long-term effects is ongoing, particularly as the use of mobile networks and wireless devices increases. This study investigates the effects of non-thermal exposure levels of mobile phone 900 MHz radiofrequency electromagnetic field (RF-EMF) on rodent neurodevelopment.
View Article and Find Full Text PDFEffectiveness and safety of percutaneous microwave ablation and radiofrequency ablation in the treatment of pulmonary metastasis: A systematic review and meta-analysis.
J Cancer Res Ther
September 2025
Department of Oncology, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, People's Republic of China.
This study aimed to evaluate the efficacy and safety of percutaneous microwave ablation (MWA) versus radiofrequency ablation (RFA) for the treatment of pulmonary metastasis. A systematic literature search was conducted using the PubMed, Embase, and Cochrane Library databases from their inception through October 2023. Studies comparing MWA and RFA for pulmonary metastasis were included.
View Article and Find Full Text PDF