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Magnetic nanoparticles drug delivery

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https://www.readbyqxmd.com/read/28224677/dynamic-nanoparticle-assemblies-for-biomedical-applications
#1
REVIEW
Fangyuan Li, Jingxiong Lu, Xueqian Kong, Taeghwan Hyeon, Daishun Ling
Designed synthesis and assembly of nanoparticles assisted by their surface ligands can create "smart" materials with programmed responses to external stimuli for biomedical applications. These assemblies can be designed to respond either exogenously (for example, to magnetic field, temperature, ultrasound, light, or electric pulses) or endogenously (to pH, enzymatic activity, or redox gradients) and play an increasingly important role in a diverse range of biomedical applications, such as biosensors, drug delivery, molecular imaging, and novel theranostic systems...
February 22, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28219721/magnetic-nanoparticles-a-multifunctional-vehicle-for-modern-theranostics
#2
REVIEW
M Angelakeris
Magnetic nanoparticles provide a unique multifunctional vehicle for modern theranostics since they can be remotely and non-invasively employed as imaging probes, carrier vectors and smart actuators. Additionally, special delivery schemes beyond the typical drug delivery such as heat or mechanical stress may be magnetically triggered to promote certain cellular pathways. To start with, we need magnetic nanoparticles with several well-defined and reproducible structural, physical, and chemical features, while bio-magnetic nanoparticle design imposes several additional constraints...
February 17, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28217547/a-study-of-the-formation-of-magnetically-active-solid-dispersions-of-phenacetin-using-atomic-and-magnetic-force-microscopy
#3
Liana Stanislavovna Usmanova, Marat Akhmedovich Ziganshin, Valery Vilenovich Gorbatchuk, Sufia Askhatovna Ziganshina, Dmitry Anatolevich Bizyaev, Anastas Akhmetovich Bukharaev, Timur Anvarovich Mukhametzyanov, Alexander Vladimirovich Gerasimov
A lot of pharmaceutical substances have a poor solubility that limits their absorption and distribution to the targeted sites to elicit the desired action without causing untoward effects on healthy cells or tissues. For such drugs, new modes of delivery have to be developed for efficient and effective delivery of the drug to the target site. Formation of magnetically active solid dispersion of such drugs could be a useful approach to addressing this problem because they combine targeted delivery and good solubility...
January 2017: Journal of Advanced Pharmaceutical Technology & Research
https://www.readbyqxmd.com/read/28215155/magnetic-nanoparticles-new-perspectives-in-drug-delivery
#4
Joanna Wong, Jeremy Prout, Alexander Seifalian
BACKGROUND: The study of magnetic nanoparticles (MNPs) for drug delivery has recently seen a surge of interest even though the first studies were conducted as early as in the seventies. Despite this, there are still gaps in the knowledge of the field, implicating the complexities in designing the ideal MNP for drug delivery. The large surface area of MNPs and the ability to manipulate with an externally applied magnetic field render the MNP a good candidate for targeted delivery of drugs...
February 14, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28210967/core-shell-drug-carrier-from-folate-conjugated-chitosan-obtained-from-prawn-shell-for-targeted-doxorubicin-delivery
#5
Md Sazedul Islam, Papia Haque, Taslim U Rashid, M Nuruzzaman Khan, Abul K Mallik, M Nazrul I Khan, Mala Khan, Mohammed Mizanur Rahman
A multifunctional drug carrier with dual targeting (magnetic and folate-receptor) and pH sensitive core-shell hybrid nanomaterial has been developed to carry an anticancer drug doxorubicin.Superparamagnetic iron oxide nanoparticles (IONPs) were used as core of the carrier and cross-linked folate conjugated chitosan (FA-CS) was acted as shell in which doxorubicin was physically entrapped. Transmission electron microscopy (TEM) analysis confirmed the average particle size of IONPs and FA-CS coated IONPs 8.2 and 15...
April 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28209060/the-use-of-spectroscopic-techniques-for-evaluating-the-coupling-of-porphyrins-on-biocompatible-nanoparticles-a-potential-system-for-photodynamics-theranostics-and-nano-drug-delivery-applications
#6
Lais N Magno, Fabio C Bezerra, Luiz E S Freire, Rubens A Guerra, Andris Figueiroa Bakuzis, Pablo Jose Goncalves
Modern medicine has been searching for new and more efficient strategies for diagnostics and therapeutics applications. Considering this, porphyrin molecules have received great interest for applications in photodiagnostics and phototherapies, even as magnetic nanoparticles for drug-delivery systems and magnetic-hyperthermia therapy. Aiming to obtain a multifunctional system, which combines diagnostics with therapeutic functions on the same platform, the present study employed UV/Vis absorption and fluorescence spectroscopies to evaluated the interaction between meso-tetrakis(p-sulfonatofenyl) porphyrin (TPPS) and maghemite nanoparticles (γ-Fe2O3)...
February 16, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28195673/ultrasound-enhanced-sirna-delivery-using-magnetic-nanoparticle-loaded-chitosan-deoxycholic-acid-nanodroplets
#7
Jeong Yu Lee, Calum Crake, Boon Teo, Dario Carugo, Marie de Saint Victor, Anjali Seth, Eleanor Stride
Small interfering RNA (siRNA) has significant therapeutic potential but its clinical translation has been severely inhibited by a lack of effective delivery strategies. Previous work has demonstrated that perfluorocarbon nanodroplets loaded with magnetic nanoparticles can facilitate the intracellular delivery of a conventional chemotherapeutic drug. The aim of this study is to determine whether a similar agent can provide a means of delivering siRNA, enabling efficient transfection without degradation of the molecule...
February 13, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28192920/diagnosis-therapy-integrative-systems-based-on-magnetic-rna-nanoflowers-for-co-drug-delivery-and-targeted-therapy
#8
Yingshu Guo, Shuang Li, Yujie Wang, Shusheng Zhang
This study was to develop a codrug delivery system for targeting cancer therapy based on magnetic RNA nanoflowers (RNA NF). Compared with traditional nucleic acid structure, convenient separation can be achieved by introducing magnetic nanoparticle (MNP) into RNA NF. Folic acid (FA) modified MNP/RNA NF (FA/MNP/RNA NF) was used as a targeting nanocarrier with excellent biocompatibility to overcome the nonselectivity of MNP/RNA NF. And then, anticancer drug doxorubicin (DOX) and photosensitizer 5, 10, 15, 20-tetrakis (1-methylpyridinium-4-yl) porphyrin (TMPyP4) binding with RNA NF were used as codrug cargo models...
February 8, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28186726/in-vitro-and-in-vivo-visualization-and-trapping-of-fluorescent-magnetic-microcapsules-in-a-bloodstream
#9
Denis V Voronin, Olga A Sindeeva, Maxim A Kurochkin, Oksana Mayorova, Ivan V Fedosov, Oksana Semyachkina-Glushkovskaya, Dmitry A Gorin, Valery V Tuchin, Gleb B Sukhorukov
Remote navigation and targeted delivery of biologically active compounds is one of the current challenges in the development of drug delivery systems. Modern methods of micro- and nanofabrication give us new opportunities to produce particles and capsules bearing cargo to deploy and possess magnetic properties to be externally navigated. In this work we explore multilayer composite magnetic microcapsules as targeted delivery systems in vitro and in vivo studies under natural conditions of living organism. Herein, we demonstrate magnetic addressing of fluorescent composite microcapsules with embedded magnetite nanoparticles in blood flow environment...
February 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28183642/magnetic-nanoparticle-loaded-electrospun-polymeric-nanofibers-for-tissue-engineering
#10
Heng Zhang, JiYi Xia, XianLun Pang, Ming Zhao, BiQiong Wang, LingLin Yang, HaiSu Wan, JingBo Wu, ShaoZhi Fu
Magnetic nanoparticles have been one of the most attractive nanomaterials for various biomedical applications including magnetic resonance imaging (MRI), diagnostic contrast enhancement, magnetic cell separation, and targeted drug delivery. Three-dimensional (3-D) fibrous scaffolds have broad application prospects in the biomedical field, such as drug delivery and tissue engineering. In this work, a novel three-dimensional composite membrane composed of the tri-block copolymer poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone) (PCL-PEG-PCL, PCEC) and magnetic iron oxide nanoparticles (Fe3O4 NPs) were fabricated using electrospinning technology...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28181827/magnetically-triggered-drug-release-from-nanoparticles-and-its-applications-in-anti-tumor-treatment
#11
Xin Hua, Qin Yang, Zhimin Dong, Jiashuo Zhang, Wanjiang Zhang, Qiudong Wang, Shengnan Tan, Hugh D C Smyth
The objective of this study was to describe the magnetic nanoparticle-drug conjugates for improved control of drug delivery and drug release. The widely used anticancer agent Doxorubicin (DOX) was successfully conjugated via amine groups to the carboxylic functional groups coating magnetic nanoparticles (fluidMAG-CMX). Following purification of the nanoparticles, the conjugation of DOX on fluidMAG-CMX was confirmed using FTIR spectroscopy and confocal microscopy. The observed drug loading capacity of DOX was 22...
November 2017: Drug Delivery
https://www.readbyqxmd.com/read/28178904/cit-cus-fe3o4-based-and-enzyme-responsive-magnetic-nanoparticles-for-tumor-chemotherapy-photothermal-and-photodynamic-therapy
#12
Xiali Zhu, Heqing Huang, Yingjie Zhang, Huijuan Zhang, Lin Hou, Zhenzhong Zhang
Safe and efficient drug delivery in a controllable fashion, especially remote and repeatable switch of on-demand drug release, is the subject of widespread attention. A kind of magnetic nanoparticles (DOX-Cit/CuS@Fe3O4-NPs) simultaneously consisted of Cit/CuS@Fe3O4 and doxorubicin (DOX) was presented. The drug release from DOX-Cit/CuS@Fe3O4-NPs could be successfully triggered by the presence of gelatinase, showing great promise for tumor-targeted drug release through an enzymatic degradation mechanism. Compared with free DOX, DOX-Cit/CuS@Fe3O4-NPs could not only specially deliver Cit/CuS@Fe3O4 and DOX into MCF-7 cells, but also could greatly improve the quantity of ROS produced in MCF-7 cells under of 980 nm laser irradiation...
February 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28178588/investigation-of-the-complex-structure-comparative-dna-binding-and-dna-cleavage-of-two-water-soluble-mono-nuclear-lanthanum-iii-complexes-and-cytotoxic-activity-of-chitosan-coated-magnetic-nanoparticles-as-drug-delivery-for-the-complexes
#13
Zahra Asadi, Neda Nasrollahi, Hamidreza Karbalaei-Heidari, Vaclav Eigner, Michal Dusek, Nabiallah Mobaraki, Roya Pournejati
Two water-soluble mono-nuclear macrocyclic lanthanum(III) complexes of 2,6-diformyl-4-methylphenol with 1,3-diamino-2-propanol (C1) or 1,3-propylenediamine (C2) were synthesized and characterized by UV-Vis, FT-IR, (13)C and (1)H NMR spectroscopy and elemental analysis. C1 complex was structurally characterized by single-crystal X-ray diffraction, which revealed that the complex was mononuclear and ten-coordinated. The coordination sites around lanthanum(III) were occupied with a five-dentate ligand, two bidentate nitrates, and one water molecule...
January 21, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28177224/protein-stabilized-gadolinium-oxide-gold-nanoclusters-hybrid-for-multimodal-imaging-and-drug-delivery
#14
Lu Han, Jun-Mei Xia, Xin Hai, Yang Shu, Xu-Wei Chen, Jian-Hua Wang
A protein-stabilized multifunctional theranostic nanoplatform, gadolinium oxide-gold nanoclusters hybrid (Gd2O3-AuNCs), is constructed for multimodal imaging and drug delivery. The Gd2O3-AuNCs nanohybrid is developed by integrating Gd2O3 nanocrystals and gold nanoclusters into bovine serum albumin scaffold as a stabilizer. The nanohybrid exhibits favorable biocompatibility and is capable of enhancing the contrast in magnetic resonance and X-ray computed tomography imaging. Meanwhile, the integrated AuNCs component not only endows the nanohybrid to produce red fluorescence, but also sensitizes the generation of singlet oxygen ((1)O2) upon near-infrared laser stimulation at 808 nm...
February 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28167110/synthesis-of-a-novel-biocompatible-nanocomposite-of-graphene-oxide-and-magnetic-nanoparticles-for-drug-delivery
#15
Majid Aliabadi, Hamidreza Shagholani, Arash Yunessnia Lehi
The combination of imaging and delivery systems through nanoscale material have been used to create new nanoparticle formulations for biological applications. Here, a magnetic nanocomposite consisting of superparamagnetic iron oxide nanoparticles (SPIONs), graphene oxide (GO), chitosan and poly(vinyl alcohol) (PVA) as biocompatible polymers was synthesized for applying in drug delivery and imaging agent. The nanocomposite was studied by various techniques including XRD, TEM, FE-SEM, FT-IR and VSM. SPIONs had an average diameter size about 10nm and showed superparamagnetic behavior...
February 3, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28166394/exosome-separation-using-microfluidic-systems-size-based-immunoaffinity-based-and-dynamic-methodologies
#16
REVIEW
Fang Yang, Xiangzhi Liao, Yuan Tian, Guiying Li
Exosomes, nanovesicles secreted by most types of cells, exist in virtually all bodily fluids. Their rich nucleic acid and protein content make them potentially valuable biomarkers for noninvasive molecular diagnostics. They also show promise, after further development, to serve as a drug delivery system. Unfortunately, existing exosome separation technologies, such as ultracentrifugation and methods incorporating magnetic beads, are time-consuming, laborious and separate only exosomes of low purity. Thus, a more effective separation method is highly desirable...
February 6, 2017: Biotechnology Journal
https://www.readbyqxmd.com/read/28164767/nanotechnology-for-alzheimer-disease
#17
Jerzy Leszek, Wai Hei Tse, Jin Zhang, Marco Fidel Ávila-Rodriguez, Vadim V Tarasov, George E Barreto, Sergey O Bachurin, Gjumrakch Aliev
Dementia of Alzheimer disease (AD) type affects memory, thinking and behavior. Researchers believe that changes in the brain may begin 10-20 years before symptoms appear and AD is diagnosed. The need to diagnose and treat the devastating disease at an early stage is critical to manage and treat AD. Unfortunately, the lack of validated biomarkers limits the possibility of the earlier stages of AD. The advance of nanotechnology could offer huge opportunities in early-stage diagnosis and well treatment of AD. Biocompatible nanoparticles with diameter in the range of 1-100 nm could be used as targeted delivery system for drugs (e...
February 3, 2017: Current Alzheimer Research
https://www.readbyqxmd.com/read/28164384/design-of-organic-macrocycle-modified-iron-oxide-nanoparticles-for-drug-delivery
#18
Ali Trabolsi, Tina Skorjanc, Farah Benyettou, John-Carl Olsen
Paul Ehrlich's vision of a "magic bullet" cure for disease inspires the modern design of nanocarriers whose purpose is to deliver drug cargo to specific sites in the body while circumventing endogenous immunological clearance mechanisms. Iron-oxide nanoparticles (IONPs) have emerged as particularly promising nanocarriers because of their biodegradability, ability to be guided magnetically to sites of pathology, mediation of hyperthermic therapy and imaging capabilities. In this review, we focus on the design and drug-delivery aspects of IONPs coated with organic macrocycles (crown ethers, cyclodextrins, calix[n]arenes, cucurbit[n]urils, or pillar[n]arenes) which, by means of reversible complexation, allow for the convenient loading and release of drug molecules...
February 5, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28150215/pulmonary-delivery-of-magnetically-targeted-nano-in-microparticles
#19
Amber A McBride, Dominique N Price, Pavan Muttil
This chapter details the intratracheal delivery of dry powder microparticles termed nano-in-microparticles (NIMs) for the purpose of in vivo targeted pulmonary drug delivery. The dry powder NIMs technology improves on previous inhaled chemotherapy platforms designed as liquid formulations. Dry powder microparticles were created through the process of spray drying; a protocol detailing the formulation of NIMs dry powder is included as a separate chapter in this book. Dry powder NIMs containing fluorescent nanoparticles and magnetically-responsive superparamagnetic iron oxide nanoparticles are intratracheally delivered (insufflated) in the presence of a magnetic field and targeted to the left lung of mice...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28150197/preparation-and-characterization-of-magnetic-nano-in-microparticles-for-pulmonary-delivery
#20
Amber A McBride, Dominique N Price, Pavan Muttil
The purpose of this chapter is to detail the formulation and characterization of a magnetically-targeted drug delivery vehicle, termed nano-in-microparticles (NIMs), for pulmonary drug delivery. Currently, chemotherapeutics and antibiotics are delivered systemically and result in whole body side-effects. NIMs are formulated with superparamagnetic iron oxide nanoparticles, termed SPIONs, making these particles targetable to specific lung regions using a strong external magnet. Additionally, these particles can be formulated to contain any drug or therapeutic agent, such that a therapeutic dose can be delivered to a specific tissue location using the SPIONs-magnet interaction...
2017: Methods in Molecular Biology
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