نتایج جستجو برای: superparamagnetic iron oxide nanoparticles

تعداد نتایج: 397547  

2015
Nils Bohmer Andreas Jordan

Nanomedicine is a rapidly growing field in nanotechnology, which has great potential in the development of new therapies for numerous diseases. For example iron oxide nanoparticles are in clinical use already in the thermotherapy of brain cancer. Although it has been shown, that tumor cells take up these particles in vitro, little is known about the internalization routes. Understanding of the ...

2015
Yunli Shen Zheyong Huang Xuebo Liu Juying Qian Jianfeng Xu Xiangdong Yang Aijun Sun Junbo Ge

Superparamagnetic iron oxide nanoparticles (SPION), as magnetic resonance (MR) imaging contrast agents or magnetic targeting carriers, have potential applications in diagnostics, imaging, cell and drug/ gene delivery for cardiovascular diseases. SPION are highly magnetic particles that cause magnetic field perturbations, which can be identified on T2* weighted images [1]. Clinically, SPION allo...

Fatemeh Javani Jouni, Mohammad Satari, Nazanin Haghighat, Parviz Abodolmaleki,

Introduction: Iron oxide nanoparticles, owing to their very small size and superparamagnetic properties, have been considered a potential candidate for several medical applications such as magnetic cell separation, magnetic resonance imaging (MRI), magnetic targeted drug delivery magnetichyperthermia. The present study aimed to synthesize and evaluate the characteristics of super...

2012
Mi Kyung Yu Jinho Park Sangyong Jon

Nanomaterials offer new opportunities for cancer diagnosis and treatment. Multifunctional nanoparticles harboring various functions including targeting, imaging, therapy, and etc have been intensively studied aiming to overcome limitations associated with conventional cancer diagnosis and therapy. Of various nanoparticles, magnetic iron oxide nanoparticles with superparamagnetic property have s...

2016
Pramod Kumar Shrish Agnihotri Indrajit Roy

In this manuscript, we report a novel, low cost and easy synthesis, iron-oxide nanoparticles were synthesized via room-temperature reduction of a mixture of ferric and ferrous salts, containing citric acid as capping agent. Next, anticancer drug doxorubicin (Dox) was used to form electrostatic conjugation with these nanoparticles. The resulting drug-nanoconjugates were characterized for their s...

2015
Steffen Kurzhals Ronald Zirbs Erik Reimhult

Superparamagnetic nanoparticles have been proposed for many applications in biotechnology and medicine. In this paper, it is demonstrated how the excellent colloidal stability and magnetic properties of monodisperse and individually densely grafted iron oxide nanoparticles can be used to manipulate reversibly the solubility of nanoparticles with a poly(N-isopropylacrylamide)nitrodopamine shell....

2007
Marcela Gonzales Kannan M. Krishnan

Iron oxide nanoparticles made from the thermal decomposition method are highly uniform in all respects (size, shape, composition and crystallography), making them ideal candidates for many bioapplications. The surfactant coating on the as-synthesized nanoparticles renders the nanoparticles insoluble in aqueous solutions. For biological applications nanoparticles must be water soluble. Here we d...

Journal: :Optics express 2014
Stephane Broillet Daniel Szlag Arno Bouwens Lionel Maurizi Heinrich Hofmann Theo Lasser Marcel Leutenegger

Optical coherence correlation spectroscopy (OCCS) allows studying kinetic processes at the single particle level using the backscattered light of nanoparticles. We extend the possibilities of this technique by increasing its signal-to-noise ratio by a factor of more than 25 and by generalizing the method to solutions containing multiple nanoparticle species. We applied these improvements by mea...

2015
Nahideh Gharehaghaji Mahmood Nazarpoor Hodaiseh Saharkhiz

BACKGROUND Ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles are used as blood pool contrast agent for magnetic resonance angiography and perfusion imaging. Our aim in this study was to investigate the effect of the two coating types of iron oxide nanoparticles on the relationship between nanoparticles concentration and signal intensity (SI) in T1-weighted MR images. METHODS Diffe...

In this work, we report synthesis of superparamagnetic iron oxide nanoparticles at room temperature using microemulsion template phase consisting of cyclohexane, water, cetyltrimethylammonium bromide CTAB as cationic surfactant and butanol as a cosurfactant. Silica surface modification of the as prepared nanoparticles was performed by adding tetraethoxysilane TEOS to alkaline medium. The struct...

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