Journal ArticleDOI
Induction heating studies of Fe3O4 magnetic nanoparticles capped with oleic acid and polyethylene glycol for hyperthermia
Runa Ghosh,Lina Pradhan,Yensenbam Priyabala Devi,Sher Singh Meena,Raghvendra Tewari,Amit Kumar,Sachil Sharma,Namdeo S. Gajbhiye,Rajesh K. Vatsa,Badri N. Pandey,Raghumani Singh Ningthoujam +10 more
TLDR
In this paper, the average crystallite sizes of Fe3O4-MN, Fe3 o4-OA-MN and Fe3 O4-PEG-MN were found to be 12, 6 and 8 nm.Abstract:
Fe3O4 magnetic nanoparticles (Fe3O4-MN) capped with either oleic acid (Fe3O4-OA-MN) or polyethylene glycol (Fe3O4-PEG-MN) were prepared by a co-precipitation method. From X-ray diffraction studies, the average crystallite sizes of Fe3O4-MN, Fe3O4-OA-MN and Fe3O4-PEG-MN were found to be 12, 6 and 8 nm, respectively. A reduction in the agglomeration of particles was observed when the magnetic nanoparticles (MN) were capped with oleic acid (OA) and polyethylene glycol (PEG), as confirmed by a transmission electron microscopy study. Magnetization of these MN was almost zero at room temperature in the absence of an applied magnetic field, indicating their superparamagnetic behavior. Magnetization was lower and the superparamagnetic fraction was higher for Fe3O4-OA-MN and Fe3O4-PEG-MN compared to Fe3O4-MN studied using a Mossbauer spectrometer. Compared to the control, an increased killing (35%) was observed in human breast cancer cells (MCF7) after Fe3O4-OA-MN treatment, which was further enhanced (65%) under induction heating conditions. However, MCF7 cells treated with Fe3O4-MN or Fe3O4-PEG-MN showed 5–10% killing after induction heating. These results showed the characterization of MN with different lipophilicity and suggests their suitability for hyperthermia applications in cancer therapy.read more
Citations
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Superparamagnetic MFe2O4 (M = Fe, Co, Mn) Nanoparticles: Tuning the Particle Size and Magnetic Properties through a Novel One-Step Coprecipitation Route
Clara Pereira,André Pereira,Carlos Fernandes,Mariana Rocha,Ricardo F. Mendes,M. P. Fernández-García,Alexandra Guedes,Pedro B. Tavares,Jean-Marc Greneche,João P. Araújo,Cristina Freire +10 more
TL;DR: In this article, superparamagnetic ferrite nanoparticles (MFe2O4, where M = Fe, Co, Mn) were synthesized through a novel one-step aqueous coprecipitation method based on the use of a new type of alkaline agent: the alkanolamines isopropanolamine and diisopropanoamine.
Journal ArticleDOI
Fe3O4 (iron oxide)-supported nanocatalysts: synthesis, characterization and applications in coupling reactions
Rakesh Kumar Sharma,Sriparna Dutta,Shivani Sharma,Radek Zboril,Rajender S. Varma,Manoj B. Gawande +5 more
TL;DR: The use of magnetic nanoparticles as a solid support material for the development of magnetically retrievable catalytic systems has led to a dramatic expansion of their potential applications as they enable environmentally friendly and sustainable catalytic processes as discussed by the authors.
Journal ArticleDOI
Designed synthesis and surface engineering strategies of magnetic iron oxide nanoparticles for biomedical applications
TL;DR: This review outlines the limitations of extant surface engineering strategies and several developing strategies that may overcome these limitations and details the promising future directions of this active research field.
Journal ArticleDOI
Construction of iron oxide nanoparticle-based hybrid platforms for tumor imaging and therapy
TL;DR: This review analyzed in depth the new strategies for generating biocompatible multifunctional Fe3O4 nanoplatforms for both the diagnosis and therapy of cancer.
Journal ArticleDOI
Synthesis and characterization of Fe3O4 nanoparticles coated with fucan polysaccharides
V. A. J. Silva,P. L. Andrade,M. P. C. Silva,Luis De Los Santos Valladares,Luis De Los Santos Valladares,J. Albino Aguiar +5 more
TL;DR: In this paper, the preparation of fucan-coated magnetite (Fe3O4) nanoparticles by the co-precipitation method was reported, which showed quasi-spherical morphology with mean sizes around 10nm.
References
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Book
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Journal ArticleDOI
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Bert Hildebrandt,Peter Wust,Olaf Ahlers,Annette Dieing,Geetha Sreenivasa,Thoralf Kerner,Roland Felix,Hanno Riess +7 more
TL;DR: The direct cytotoxic effect of heat, heat-induced alterations of the tumor microenvironment, synergism of heat in conjunction with radiation and drugs, as well as, the presumed cellular effects of hyperthermia including the expression of heat-shock proteins (HSP), induction and regulation of apoptosis, signal transduction, and modulation of drug resistance byhyperthermia are discussed.
Journal ArticleDOI
Medical Application of Functionalized Magnetic Nanoparticles
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Journal ArticleDOI
Static and dynamic magnetic properties of spherical magnetite nanoparticles
TL;DR: In this paper, a detailed study of static and dynamic magnetic behavior of Fe3O4 nanoparticles with average particle sizes ranging from 5 to 150 nm is presented, and the existence of surface spin disorder can be inferred from the decrease of saturation magnetization MS at low temperatures, as the average particle size is reduced.