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" no prazo de Papéis
Xiaoyan Yang et al.
Talanta, 114, 5-10 (2013-08-21)
This paper described a novel label-free electrochemiluminescence assay for target protein based on a controlled delivery system. Iron oxide magnetic mesoporous silica nanocontainers were prepared by using a general procedure. The prepared magnetic mesoporous silica nanocontainers were applied to load
Yuri Matsumoto et al.
FEBS letters, 587(8), 1021-1029 (2013-02-05)
Metalloproteins have long been recognized as key determinants of endogenous contrast in magnetic resonance imaging (MRI) of biological subjects. More recently, both natural and engineered metalloproteins have been harnessed as biotechnological tools to probe gene expression, enzyme activity, and analyte
Matthew A Pasek et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(25), 10089-10094 (2013-06-05)
It has been hypothesized that before the emergence of modern DNA-RNA-protein life, biology evolved from an "RNA world." However, synthesizing RNA and other organophosphates under plausible early Earth conditions has proved difficult, with the incorporation of phosphorus (P) causing a
Leyong Zeng et al.
Nanoscale, 5(5), 2107-2113 (2013-02-06)
Multifunctional Fe(3)O(4)-TiO(2) nanocomposites with Janus structure for magnetic resonance imaging (MRI) and potential photodynamic therapy (PDT) were synthesized, in which Fe(3)O(4) was used as a MRI contrast agent and TiO(2) as an inorganic photosensitizer for PDT. Their morphology, structure, and
Ru-Song Zhao et al.
Analytica chimica acta, 769, 65-71 (2013-03-19)
In this paper, bamboo charcoals were modified using Fe3O4 nanosheets for the first time. The composites, as a novel solid-phase microextraction (SPME) fiber coating, were used for the extraction of seven polybrominated diphenyl ethers (PBDEs) in environmental water samples. The
Olivia Gómez-Laserna et al.
Analytical and bioanalytical chemistry, 407(19), 5635-5647 (2015-05-16)
This work addresses the evaluation of an innovative mutianalytical method to assess the conservation state of a fifteenth century palace house. With the goal of reducing the handicaps of field analysis, the in situ spectroscopic assessment, often based on the
Aaron Harman et al.
Journal of computer assisted tomography, 38(4), 571-573 (2014-04-16)
Ferumoxytol is a parenteral iron therapy that the Food and Drug Administration recently approved for the treatment of iron-deficiency anemia. The form of the iron, ultrasmall superparamagnetic iron oxide nanoparticles, causes T1, T2, and T2* shortening on magnetic resonance imaging
Jens Baumgartner et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(37), 14883-14888 (2013-08-28)
The iron oxide mineral magnetite (Fe3O4) is produced by various organisms to exploit magnetic and mechanical properties. Magnetotactic bacteria have become one of the best model organisms for studying magnetite biomineralization, as their genomes are sequenced and tools are available
Ayman M Atta et al.
Molecules (Basel, Switzerland), 20(1), 1244-1261 (2015-01-17)
This work presents a new method to prepare poly(sodium acrylate) magnetite composite nanoparticles. Core/shell type magnetite nanocomposites were synthesized using sodium acrylate as monomer and N,N-methylenebisacrylamide (MBA) as crosslinker. Microemulsion polymerization was used for constructing core/shell structures with magnetite nanoparticles
Re: Renal transplant imaging using magnetic resonance angiography with a nonnephrotoxic contrast agent.
David A Goldfarb
The Journal of urology, 190(6), 2175-2175 (2013-11-12)
Faheem Muhammad et al.
Colloids and surfaces. B, Biointerfaces, 123, 506-514 (2014-12-03)
Simultaneous delivery of multiple therapeutic agents is of great importance for effective chemotherapy due of its well-known drug synergism and suppression to chemoresistance. We report a new theranostic nanoformulation to shuttle multiple chemotherapeutic agents for successfully exterminating cancer cells. This
S M McLennan et al.
Science (New York, N.Y.), 343(6169), 1244734-1244734 (2013-12-11)
Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved, indicating arid, possibly
Nuryono Nuryono et al.
SpringerPlus, 3, 515-515 (2014-10-04)
In this research, mercapto-silica coated magnetite (Fe3O4-SiO2-SH) has been prepared in aqueous solution through a simple approach so called a one-pot process. The Fe3O4-SiO2-SH was prepared in nitrogen condition by mixing magnetite, 3-mercaptopropyltrimethoxysilane (MPTMS), and sodium silicate (Na2SiO3) solution extracted
Binh Hai Nguyen et al.
Materials science & engineering. C, Materials for biological applications, 33(4), 2229-2234 (2013-03-19)
The selective detection of ultratrace amounts of aflatoxin M1 (AFM1) is extremely important for food safety since it is the most toxic mycotoxin class that is allowed to be present on cow milk with strictly low regulatory levels. In this
Margarita Gutova et al.
Stem cells translational medicine, 2(10), 766-775 (2013-09-10)
Numerous stem cell-based therapies are currently under clinical investigation, including the use of neural stem cells (NSCs) as delivery vehicles to target therapeutic agents to invasive brain tumors. The ability to monitor the time course, migration, and distribution of stem
N Shanta Singh et al.
Nanotechnology, 24(6), 065101-065101 (2013-01-18)
Polyol mediated synthesized luminescent YVO(4):Eu(3+) nanoparticles (NPs) have been encapsulated in mesoporous silica nanoparticles (MSNs) using the sol-gel process. X-ray diffraction and Fourier transform infrared spectroscopy along with transmission electron microscopy confirm the encapsulation of the YVO(4):Eu(3+) NPs in the
Tianyuzi Li et al.
International journal of nanomedicine, 10, 3779-3790 (2015-06-18)
Regimen adherence, systemic toxicities, and limited drug penetrance to viral reservoirs are obstacles limiting the effectiveness of antiretroviral therapy (ART). Our laboratory's development of the monocyte-macrophage-targeted long-acting nanoformulated ART (nanoART) carriage provides a novel opportunity to simplify drug-dosing regimens. Progress
Baoliang Zhang et al.
Materials science & engineering. C, Materials for biological applications, 33(7), 4401-4408 (2013-08-06)
BSA/Fe3O4 magnetic composite microspheres with high saturation magnetization and paramagnetic property were prepared via inverse emulsion technology at room temperature, bovine serum albumin (BSA, 60 KD), magnetic nanoparticles (Fe3O4) and glutaraldehyde as macromonomer, inorganic particles and cross-linking agent, respectively. Fourier
Ya-Ting Lin et al.
Chemosphere, 136, 27-31 (2015-04-29)
Alkaline ascorbic acid (AA) was recently discovered as a novel in-situ chemical reduction (ISCR) reagent for remediating chlorinated solvents in the subsurface. For this ISCR process, the maintenance of an alkaline pH is essential. This study investigated the possibility of
Ling Zhang et al.
Journal of nanobiotechnology, 13, 3-3 (2015-01-18)
Iron nanoparticles (FeNPs) have attracted increasing attention over the past two decades owing to their promising application as biomedical agents. However, to ensure safe application, their potential nanotoxicity should be carefully and thoroughly evaluated. Studies on the effects of FeNPs
M A Olutoye et al.
Bioresource technology, 132, 103-108 (2013-02-12)
An active heterogeneous Al2O3 modified MgZnO (MgZnAlO) catalyst was prepared and the catalytic activity was investigated for the transesterification of different vegetable oils (refined palm oil, waste cooking palm oil, palm kernel oil and coconut oil) with methanol to produce
Xiaoyan Wang et al.
Bioresource technology, 130, 750-756 (2013-01-22)
Magnetic poly(styrene-glycidyl methacrylate) porous microspheres (MPPM) with high magnetic contents were prepared by surfactant reverse micelles and emulsion polymerization of monomers, in which the well-dispersed Fe(3)O(4) nanoparticles were modified by polyethylene glycol (PEG) and oleic acid (OA) respectively. The characterizations
Yi Zheng et al.
Materials science & engineering. C, Materials for biological applications, 33(4), 2407-2412 (2013-03-19)
Flexible magnetic membrane based on bacterial cellulose (BC) was successfully prepared by in-situ synthesis of the Fe3O4 nanoparticles under different conditions and its properties were characterized. The results demonstrated that the Fe3O4 nanoparticles coated with PEG were well homogeneously dispersed
Sandra Markmann et al.
Traffic (Copenhagen, Denmark), 16(7), 743-759 (2015-03-20)
Most lysosomal enzymes require mannose 6-phosphate (M6P) residues for efficient receptor-mediated lysosomal targeting. Although the lack of M6P residues results in missorting and hypersecretion, selected lysosomal enzymes reach normal levels in lysosomes of various cell types, suggesting the existence of
Michael Auerbach et al.
American journal of hematology, 88(11), 944-947 (2013-07-06)
For the majority of patients with iron deficiency anemia (IDA), a full course of intravenous (IV) iron is 1 g. Most IV irons require 5-10 administrations of 100-300 mg. We have successfully employed 1 g low molecular weight iron dextran
Jiao Yang et al.
Journal of environmental sciences (China), 25(2), 413-418 (2013-04-20)
La-EDTA-Fe3O4 was prepared by a chemical co-precipitation method. The magnetic composite was characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). Furthermore, the adsorption properties of La-EDTA-Fe3O4 toward phosphate in water were investigated. The
Maria Szymonowicz et al.
Acta of bioengineering and biomechanics, 17(3), 49-58 (2015-12-22)
Preventing the formation of blood clots on the surface of biomaterials and investigation of the reasons of their formation are the leading topics of the research and development of biomaterials for implants placed into the bloodstream. Biocompatibility and stability of
Paula Solar et al.
Journal of nanobiotechnology, 13, 14-14 (2015-04-18)
Advances in nanostructure materials are leading to novel strategies for drug delivery and targeting, contrast media for magnetic resonance imaging (MRI), agents for hyperthermia and nanocarriers. Superparamagnetic iron oxide nanoparticles (SPIONs) are useful for all of these applications, and in
Oliver Raschdorf et al.
Molecular microbiology, 89(5), 872-886 (2013-07-31)
Magnetospirillum gryphiswaldense uses intracellular chains of membrane-enveloped magnetite crystals, the magnetosomes, to navigate within magnetic fields. The biomineralization of magnetite nanocrystals requires several magnetosome-associated proteins, whose precise functions so far have remained mostly unknown. Here, we analysed the functions of
Wei Lin et al.
The ISME journal, 8(12), 2463-2477 (2014-06-11)
Magnetotactic bacteria (MTB) of the genus 'Candidatus Magnetobacterium' in phylum Nitrospirae are of great interest because of the formation of hundreds of bullet-shaped magnetite magnetosomes in multiple bundles of chains per cell. These bacteria are worldwide distributed in aquatic environments
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