Magneto-ultrasonic heating with nanoparticles

Kaczmarek, Katarzyna; Hornowski, T.; Antal, Iryna; Τimko, M.; Józefczak, Arkadiusz

doi:10.1016/j.jmmm.2018.11.062

Cited by 23 publications

(21 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The sediment (magnetic fraction) containing used for further experiments. as prepared by the escribed in [21,24,25]. Iron precipitation of ferric and ferrous salts (molar ratio 2:1) in OH under constant stirring.…”

Section: Trp 204mentioning

confidence: 99%

“…Aqueous solution of magnetic NPs stabilised with perchloric acid was prepared by the Massart's co-precipitation method [23], with slight modifications as described in [21,24,25]. Iron oxide NPs (IONPs) were prepared by co-precipitation of ferric and ferrous salts (molar ratio 2:1) in the basic solution of 25% NH 4 OH under constant stirring.…”

Section: Np Preparationmentioning

confidence: 99%

See 1 more Smart Citation

MRI Relaxivity Changes of the Magnetic Nanoparticles Induced by Different Amino Acid Coatings

et al. 2020

View full text Add to dashboard Cite

In this study, we analysed the physico-chemical properties of positively charged magnetic fluids consisting of magnetic nanoparticles (MNPs) functionalised by different amino acids (AAs): glycine (Gly), lysine (Lys) and tryptophan (Trp), and the influence of AA–MNP complexes on the MRI relaxivity. We found that the AA coating affects the size of dispersed particles and isoelectric point, as well as the zeta potential of AA–MNPs differently, depending on the AA selected. Moreover, we showed that a change in hydrodynamic diameter results in a change to the relaxivity of AA–MNP complexes. On the one hand, we observed a decrease in the relaxivity values, r1 and r2, with an increase in hydrodynamic diameter (the relaxivity of r1 and r2 were comparable with commercially available contrast agents); on the other hand, we observed an increase in r2* value with an increase in hydrodynamic size. These findings provide an interesting preliminary look at the impact of AA coating on the relaxivity properties of AA–MNP complexes, with a specific application in molecular contrast imaging originating from magnetic nanoparticles and magnetic resonance techniques.

show abstract

Section: Trp 204mentioning

confidence: 99%

Section: Np Preparationmentioning

confidence: 99%

MRI Relaxivity Changes of the Magnetic Nanoparticles Induced by Different Amino Acid Coatings

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Ultrasound-induced heating through ultrasonic wave attenuation and conversion of its energy into heat was examined. The effectiveness of ultrasonicinduced heating could be significantly improved by a sonosensitizer, such as magnetic nanoparticles embedded in warming biomaterial [14,19]. Ultrasonic treated particles induced the crystal lattice change had been reported [20], but we still cannot confirm the heating of warming biomaterials treated with ultrasound due to this cause.…”

Section: Discussionmentioning

confidence: 77%

“…Magnetic nanoparticles have been used as sonosensitizing materials for ultrasound-induced thermal treatment [13][14][15][16] owing to their high attenuation. The effect of the heating rate was enhanced in magnetic nanoparticle containing-biomaterials by using an ultrasound system [17].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Neurite Outgrowth by Warming Biomaterial Ultrasound Treatment

Chen

et al. 2020

IJMS

View full text Add to dashboard Cite

Ultrasound is a method for enhancing neurite outgrowth because of its thermal effect. In order to reach the working temperature to enhance neurite outgrowth, long-time treatment by ultrasound is necessary, while acknowledging that the treatment poses a high risk of damaging nerve cells. To overcome this problem, we developed a method that shortens the ultrasonic treatment time with a warming biomaterial. In this study, we used Fe3O4 nanoparticle-embedded polycaprolactone (PCL) as a sonosensitized biomaterial, which has an excellent heating rate due to its high acoustic attenuation. With this material, the ultrasonic treatment time for enhancing neurite outgrowth could be effectively shortened. Ultrasonic treatment could also increase neuronal function combined with the warming biomaterial, with more promoter neuronal function than only ultrasound. Moreover, the risk of overexposure can be avoided by the use of the warming biomaterial by reducing the ultrasonic treatment time, providing better effectiveness.

show abstract

“…Hyperthermia is widely accepted as an adjuvant cancer treatment modality, offering several modes for heating, such as microwaves, photodynamic therapy, radio frequency, and ultrasound with different success rates. [1][2][3][4][5] The approach of combining an external radiofrequency electromagnetic eld with magnetic nanoheating carriers, widely known as magnetic particle hyperthermia (MPH), is a strong candidate with great prospects. [6][7][8] Materials research on magnetic hyperthermia agents is mainly devoted to iron oxide nanoparticles because they are biocompatible and they follow a well-known metabolic pathway in the human body.…”

Section: Introductionmentioning

confidence: 99%