Sentences with phrase «of iron nanoparticles»

Not exact matches

This clinical study, published in the Proceedings of the National Academy of Sciences, tested the possibility of imaging inflammation in the pancreas of human volunteers using ferumoxytol, a coated iron nanoparticle approved by the FDA as an iron replacement therapy, and MRI.

One species, Magnetospirillum gryphiswaldense, is easily cultivated in the lab — with or without magnetic nanoparticles in their interior depending on the presence or absence of iron in the local environment.

The researchers engineered nanoparticle complexes containing small amounts of ropivacaine and the iron oxide mineral magnetite.

One promising idea, known as magnetic hyperthermia, involves injecting minuscule «nanoparticles,» basically microscopic lumps of iron oxide or other compounds, into tumors to make them magnetic.

In other words, they could tell the extent to which an individual nanoparticle of lithium iron phosphate had reacted.

Heat treatment after an injection of traditional iron oxide nanoparticles had no significant effect on the tumors.

An iron oxide nanoparticle applied to teeth prior to treatment with hydrogen peroxide effectively reduced the onset and severity of cavities (indicated with red arrows) in rats.

HST researchers have experimented with polymer - coated iron oxide nanoparticles held together by DNA tethers to help them create a visual image of a tumor through magnetic resonance imaging.

Instead of simply applying an antibiotic to the teeth, they took advantage of the pH - sensitive and enzyme - like properties of iron - containing nanoparticles to catalyze the activity of hydrogen peroxide, a commonly used natural antiseptic.

To create a diabetes vaccine, Santamaria has attached a cocktail of antigens from pancreatic beta cells to synthetic iron oxide nanoparticles.

Yet, to be effective, the size of the iron oxide nanoparticles had to be just right — and had to be maintained in a strong matrix that was both flexible and resilient to deal with large volume changes while optimally conducting electricity.

Gao and Koo reached out to Cormode, who had experience working with iron oxide nanoparticles in a radiological imaging context, to help them synthesize, characterize and test the effectiveness of the nanoparticles, several forms of which are already FDA - approved for imaging in humans.

An intensive collaboration between University of Helsinki, Finland, and Okinawa Institute of Science and Technology, Japan, showed that in some condition iron nanoparticles can grow in cubic shape.

A combination of iron - oxide nanoparticles and an alternating magnetic field, which together generate heat, have activated an immune system response to tumors in mice according to an accepted manuscript by Dartmouth - Hitchcock Norris Cotton Center researchers in the journal Nanomedicine: Nanotechnology, Biology and Medicine released online on February 24, 2014.

Previous cancer studies had shown that by injecting tumors with magnetic nanoparticles made of iron oxide — «essentially rust, with well - tuned magnetic properties,» Anikeeva says — then exposing them to rapidly alternating magnetic fields, excited nanoparticles can be used to heat and destroy cancer tumors while leaving surrounding, healthy tissue intact.

An endowed professor of pediatric cardiology at Children's Hospital of Philadelphia in Pennsylvania, Levy had been working with his team on biodegradable polymer nanoparticles infused with iron oxide.

As an alternative, contrast agents based on iron oxide nanoparticles are practically unused because of the difficult readability of the results.

Researchers at Umeå University, together with researchers at Uppsala University and Stockholm University, show in a new study how nitrogen doped graphene can be rolled into perfect Archimedean nano scrolls by adhering magnetic iron oxide nanoparticles on the surface of the graphene sheets.

HYEON Taeghwan, director of the Center for Nanoparticle Research explains: «Let's take the example of a MRI analysis of a brain with Alzheimer's: iron oxide in the blood vessels would appear as black and the amyloid plaques as gray.

In place of gadolinium - based contrast agents, the researchers have found that they can produce similar MRI contrast with tiny nanoparticles of iron oxide that have been treated with a zwitterion coating.

It shows that the magnetic interaction between the iron oxide nanoparticles is one of the main effects behind the scroll formation.

Certain strains of bacteria absorb iron to make magnetic nanoparticles that let them navigate using the Earth's magnetic field.

Before injecting nematodes with magnetic nanoparticles, the scientists first coated the manganese — iron nanoparticles with polyethylene glycol, a molecule that targeted the particles to the mucus layer of the amphid region (an opening near the nematode's mouth that hosts the nerve cells involved in the heat avoidance reflex).

When the scientists examined the cells in the growing communities closely, they found nanoparticles of magnetite on the surface of cells and, in some cases, grains of the iron mineral connecting microbial pairs.

To find tumors via MRI, the Stanford team used a new contrast agent consisting of nanoparticles of iron.

None of the patients experienced adverse reactions to the iron nanoparticles, though the FDA has previously noted a small risk of allergic reaction to the nanoparticles» coating.

To get round this, Wilhelm Roell at the University of Bonn in Germany and his colleagues loaded muscle stem cells with iron oxide nanoparticles to make them magnetic.

Nickels M, Xie JP, Cobb J, Gore JC and Pham W. Functionalization of Iron Oxide Nanoparticles With a Versatile Epoxy Amine Linker.

A comprehensive analysis of transfection - assisted delivery of iron oxide nanoparticles to dendritic cells.

The team used iron oxide for the core of the nanoparticles, which not only enables the team to use them for magnetic resonance imaging, but opens up possibilities in remote guidance and localized magnetic heating to hasten the breaking up of the clots.

I've been experimenting with T10 dextran coated iron oxide nanoparticles, obviously not the same as fullerenes, but still a very interesting tool, I've been testing if the coating is giving the particle antioxidant abilities because of it's the (basically) indigestable sugar chains (glucose) creating a high surface area which are largely made from hydroxyl groups, I hypothesised this act's as a «sink» for reactive oxygen species converting them to water.

Identification of the precise 3 - D coordinates of iron, shown in red, and platinum atoms in an iron - platinum nanoparticle..

The image of the iron - platinum nanoparticle (referenced in the headline) reminds of foetal ultrasound images.

«This could help scientists learn how to steer the growth of iron - platinum nanoparticles so they develop more highly magnetic patterns of atoms,» says Ercius.

By taking multiple images of the iron - platinum nanoparticle with an advanced electron microscope at Lawrence Berkeley National Laboratory and using powerful reconstruction algorithms developed at UCLA, the researchers determined the precise three - dimensional arrangement of atoms in the nanoparticle.

Now, UCLA [University of California at Los Angeles] physicists and collaborators have mapped the coordinates of more than 23,000 individual atoms in a tiny iron - platinum nanoparticle to reveal the material's defects.

The researchers then used the three - dimensional coordinates of the atoms as inputs into quantum mechanics calculations to determine the magnetic properties of the iron - platinum nanoparticle.

«Deficient neuron - microglia signaling results in impaired functional brain connectivity and social behavior» Y. Zhan, R.C. Paolicelli, F. Sforazzini, L. Weinhard, G. Bolasco, F. Pagani, A. L. Vyssotski, A. Bifone, A. Gozzi, D. Ragozzino, C.T. Gross Nature Neuroscience 17 (3), 400-4006 (2014) «USPIO - loaded Red Blood Cells as a biomimetic MR contrast agent: a relaxometric study» A. Boni, D. Ceratti, A. Antonelli, C. Sfara, M. Magnani, E. Manuali, S. Salamida, A. Gozzi, and A. Bifone Contrast Media and Molecular Imaging 9, 229 - 236 (2014) «Distributed BOLD and CBV - weighted resting - state networks in the mouse brain» F. Sforazzini, A.J. Schwarz, A. Galbusera, A. Bifone, and A. Gozzi NeuroImage 87, 403 - 415 (2014) «Antimicrobial peptides design by evolutionary multiobject optimization» G. Maccari, M. Di Luca, R. Nifosì, F. Caldarelli, G. Signore, C. Boccardi, and A. Bifone PloS Computational Biology 9 (9): e1003212 (2013) «Differential effect of orexin - 1 and crf - 1 antagonism on stress circuits: a fMRI study in the rat with the pharmacological stressor yohimbine» A. Gozzi, S: Lepore, E: Merlo Pich, and A. Bifone Neuropsychopharmacology 38 (11): 2120 - 2130 (2013) «Water dispersal and functionalization of hydrophobic iron oxide nanoparticles with lipid - modified poly (amidoamine) dendrimers» A. Boni, L. Albertazzi, C. Innocenti, M. Gemmi, and A. Bifone.

A 2017 study co-authored by John Bischof, professor of mechanical engineering at the University of Minnesota, and published in Science Translational Medicine, used specially coated iron oxide nanoparticles.

They have been working on using iron nanoparticles doped with Pd, Ni or Cu to perform catalytic reactions such as Suzuki - Miyaura cross couplings, Sonagashira coupling, and reduction of nitro - containing aromatics.

Napier's presentation, titled «Superparamagnetic Iron Oxide Nanoparticles for Delivery of DNA - based Contraceptive Vaccines for Feral Cats,» dealt with a portion of Napier's research in developing and delivering contraceptives to feral cats.