Characterization of iron oxide nanoparticles adsorbed with cisplatin for biomedical applications

Physics in Medicine and Biology
Melanie KetteringIngrid Hilger

Abstract

The aim of this study was to characterize the behaviour of cisplatin adsorbed magnetic nanoparticles (cis-MNPs) for minimal invasive cancer treatments in preliminary in vitro investigations. Cisplatin was adsorbed to magnetic nanoparticles (MNPs) by simple incubation. For stability determinations, cis-MNPs were incubated in dH(2)O, phosphate-buffered saline (PBS) and fetal calf serum (FCS) at 4-121 degrees C up to 20 weeks. Hydrodynamic diameters were measured using laser diffraction. The extent of cisplatin linkage was determined by atomic absorption spectrometry. The magnetite core size was assessed by vibrating sample magnetometry and transmission electron microscopy. The specific loss power (SLP) was measured in an alternating magnetic field. Our results showed that a maximum of 10.3 +/- 1.6 (dH(2)O), 10 +/- 1.6 (PBS) and 13.4 +/- 2.2 (FCS) mg cisplatin g(-1) Fe could be adsorbed to MNPs. With hyperthermal (42 degrees C) or thermal ablative (60 degrees C) temperatures, used for therapeutic approaches, cisplatin did not desorb from cis-MNPs in dH(2)O during incubation times of 180 or 30 min, respectively. In PBS and FCS, cisplatin amounts adsorbed to MNPs decreased rapidly to approximately 50% and 25% at these temperatures. ...Continue Reading

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Citations

May 16, 2012·Pharmaceutical Research·Dhrumil UpadhyayWojciech Chrzanowski
Feb 9, 2010·Pediatric Research·Kevin M McCabe, Mark Hernandez
Oct 1, 2013·Nanomedicine·Madeline Torres-Lugo, Carlos Rinaldi
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Jul 10, 2021·The Journal of Chemical Physics·Megan J ThompsonTina Düren
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