Search Within
Applied Filters:
Palabra clave:'755745'
Showing 1-30 of 220 resultados for "


" within Papeles
Xi Zhan et al.
Pharmaceutical research, 32(7), 2280-2291 (2015-01-17)
A key step of delivering extracellular agents to its intracellular target is to escape from endosomal/lysosomal compartments, while minimizing the release of digestive enzymes that may compromise cellular functions. In this study, we examined the intracellular distribution of both fluorecent
Šárka Kubinová et al.
Journal of tissue engineering and regenerative medicine, 9(11), 1298-1309 (2013-02-13)
The architecture and mechanical properties of a scaffold for spinal cord injury treatment must provide tissue integration as well as effective axonal regeneration. Previous work has demonstrated the cell-adhesive and growth-promoting properties of the SIKVAV (Ser-Ile-Lys-Val-Ala-Val)-modified highly superporous poly(2-hydroxethyl methacrylate)
Henrik Kempe et al.
Pharmaceutical research, 32(2), 375-388 (2014-08-12)
To develop and evaluate molecularly imprinted nanocarriers for sustained release of erythromycin in physiological buffer media. Erythromycin-imprinted poly(methacrylic acid-co-trimethylolpropane trimethacrylate) nanocarriers and corresponding control nanocarriers were prepared by free-radical precipitation polymerization. The nanocarriers were characterized by transmission electron microscopy, dynamic
Ashish Punia et al.
International journal of molecular sciences, 16(10), 23867-23880 (2015-10-17)
Synthetic amphiphilic polymers have been established as potentially efficient agents to combat widespread deadly infections involving antibiotic resistant superbugs. Incorporation of poly(ethylene glycol) (PEG) side chains into amphiphilic copolymers can reduce their hemolytic activity while maintaining high antibacterial activity. Our
Zhanpeng Zhang et al.
Advanced functional materials, 25(3), 350-360 (2015-06-13)
Injectable microspheres are attractive stem cell carriers for minimally invasive procedures. For tissue regeneration, the microspheres need to present the critical cues to properly direct stem cell differentiation. In natural extracellular matrix (ECM), growth factors (GFs) and collagen nanofibers provide
Katanchalee Mai-Ngam et al.
Carbohydrate polymers, 112, 440-447 (2014-08-19)
The synthesis of two comb-like dextran surfactant polymers, that are different in their dextran molecular weight (MW) distribution and the presence of carboxylic groups, and their characterization are reported. A bimodal carboxylic dextran surfactant polymer consists of poly(vinyl amine) (PVAm)
Marwa Ahmed et al.
Chirality, 26(11), 754-763 (2014-03-08)
New affinity monolithic capillary columns of 150 µm internal diameter were prepared in situ fused glass capillary via either immobilization or encapsulation of Candida antarctica lipase B (CALB) on or within polymer monoliths, respectively. The immobilized lipase-based monoliths were prepared
Madeshwaran Sekkarapatti Ramasamy et al.
Journal of colloid and interface science, 455, 63-70 (2015-06-10)
The synthesis of self-doped conducting polypyrrole-grafted graphene sheets (GS-PPy) for non-volatile memory applications is reported. First, the alkyne-modified graphene sheets (GS-alkyne) were covalently functionalized with a water-soluble polymer containing numerous anionic SO3(-) dopants by a copper-catalyzed click reaction. Then, polypyrrole
J A Redondo et al.
European journal of pharmaceutics and biopharmaceutics : official journal of Arbeitsgemeinschaft fur Pharmazeutische Verfahrenstechnik e.V, 90, 38-43 (2014-12-03)
In this work, the cationic monomer N-ethyl pyrrolidine methacrylamide (EPA) was copolymerized with the neutral monomer N-hydroxypropyl methacrylamide (HPMA) at different molar ratios obtaining linear random copolymers that were characterized and evaluated in vitro as non-viral gene carriers using murine
Apeng Chen et al.
Analytica chimica acta, 887, 230-236 (2015-09-01)
Toward developing a micro HPLC cartridge, we have recently built a high-pressure electroosmotic pump (EOP). However, we do not recommend people to use this pump to deliver an organic solvent directly, because it often makes the pump rate unstable. We
Sachiro Kakinoki et al.
Acta biomaterialia, 13, 42-51 (2014-12-03)
Mechanotransduction in the regulation of cellular responses has been previously studied using elastic hydrogels. Because cells interact only with the surface of biomaterials, we are focusing on the molecular mobility at the outermost surface of biomaterials. In this study, surfaces
Mahmoud Seifi et al.
International journal of pharmaceutics, 471(1-2), 37-44 (2014-05-06)
In the present work a series of tramadole imprinted micro- and nanoparticles were prepared and study their recognition properties. Methacrylic acid (MAA), as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a cross-linker and different solvents (chloroform, toluene and acetonitrile
Piotr Luliński et al.
Journal of chromatography. A, 1420, 16-25 (2015-10-16)
In this paper, the optimized synthesis and detailed characterization of novel imprinted material for selective extraction of 2-aminothiazoline-4-carboxylic acid (ATCA) were described. The prepolymeric system contained 1-allyl-2-thiourea and ethylene glycol dimethacrylate in methanol, tetrahydrofuran and dimethyl sulfoxide porogenic mixture and
Thayyath S Anirudhan et al.
Materials science & engineering. C, Materials for biological applications, 55, 471-481 (2015-06-29)
A novel drug delivery system (DDS), 3-methacryloxypropyl trimethoxy silane coated magnetic nanoparticles polymerized with glycidylmethacrylate-grafted-maleated cyclodextrin (MPTMS-MNP-poly-(GMA-g-MACD)) was prepared in the presence of ethyleneglycoldimethacrylate as cross-linker and a,a'-azobisisobutyronitrile as initiator and characterized by means of SEM, FT-IR, XRD, DLS, VSM
Antonelle Pardo et al.
Journal of chromatography. A, 1364, 128-139 (2014-09-10)
Molecularly imprinted polymers (MIPs) based on quercetin and synthesized by either bulk, precipitation or suspension polymerization were characterized in terms of size and shape by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). After a study of rebinding protocols
Ali Nematollahzadeh et al.
Journal of chromatography. A, 1345, 154-163 (2014-05-03)
In the present work, we report a novel method for the reinforcement of hierarchically structured molecularly imprinted polymer (MIP) for the separation of human serum albumin (HSA) and immunoglobulin G (IgG) proteins under pressure driven flow conditions. The template proteins
Jiaxing Zhong et al.
Journal of biomaterials science. Polymer edition, 30(3), 202-214 (2018-12-28)
Herein, for rate-tunable controlled release, pH and redox dual responsive polymeric vesicles were constructed based on host-guest interaction between a water soluble pillar[5]arene (WP5) and a paraquat-containing block copolymer (BCP) in water. The yielding polymeric vesicles can be further applied
Song Yang Khor et al.
Nanomedicine : nanotechnology, biology, and medicine, 11(8), 2099-2108 (2015-09-08)
Herein we report for the first time the biological fate of poly[(oligoethylene glycol) acrylate] (POEGA) star polymers synthesised via a versatile arm-first reversible addition-fragmentation chain transfer (RAFT) polymerisation approach. The biopharmaceutical behaviour of three different molecular weight (49, 64 and
Yanyan Jiang et al.
Macromolecular bioscience, 15(7), 965-978 (2015-03-27)
A novel gene transfection vector was fabricated based on the conjugation of human serum albumin (HSA) and maleimide end functionalized poly[(N,N-dimethylamino) ethyl methacrylate] (PDMAEMA). The bioconjugation was achieved in a site-specific manner to yield well-defined polymer-protein conjugates. The biohybrid was
Roya Salehi et al.
International journal of pharmaceutics, 487(1-2), 274-284 (2015-04-22)
Two novel dual temperature/pH-sensitive superparamagnetic nanogels were developed with the aim of simultaneously delivering two different anticancer drugs, doxorubicin (DOX) and methotrexate (MTX). The studied copolymers were characterized by (1)H NMR, SEM, and FTIR spectroscopy. Morphological investigations showed that both
Xi Zhan et al.
Vaccine, 33(23), 2719-2726 (2015-04-23)
In order for a more precise control over the quality and quantity of immune responses stimulated by synthetic particle-based vaccines, it is critical to control the colloidal stability of particles and the release of protein antigens in both extracellular space
Hazit Zayas et al.
Organic & biomolecular chemistry, 12(36), 6994-7003 (2014-06-17)
Six novel functional monomers: 4-(4-vinylphenyl)pyridine (M1), 4′-vinylbiphenyl-4-ol (M2), N,N-dimethyl-4′-vinylbiphenyl-3-amine (M3), (4′-vinylbiphenyl-4-yl)methanol (M4), 4′-vinylbiphenyl-4-carboxylic acid (M5) and 4-hydroxy-5-methyl-4′-vinylbiphenyl-3-carboxylic acid (M6), were examined for their ability to imprint theophylline (1). Using a molecular modelling-NMR titration approach, M2 and M6 were predicted to
Hai-Bo He et al.
Journal of chromatography. A, 1361, 23-33 (2014-08-31)
This paper reports a nanomagnetic polyhedral oligomeric silsesquioxanes (POSS)-directing strategy toward construction of molecularly imprinted hybrid materials for antibiotic residues determination in milk samples. The imprinted polymeric layer was facilely obtained through the copolymerization of active vinyl groups present on
Marieta Constantin et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 62, 86-95 (2014-05-23)
A dual drug delivery system based on a "biosensor" (pH-sensitive unit) and a delivery component (thermosensitive hydrogel) was developed. The pH/thermosensitive hydrogel is able to restore the thermosensitive characteristics after electrostatic interaction of the pH-sensitive units with selected biologically active
Seyed Javad Ahmadi et al.
Journal of hazardous materials, 175(1-3), 193-197 (2009-11-03)
UO(2)(2+) ion-imprinted polymer materials used for solid-phase extraction were prepared by copolymerization of a ternary complex of uranyl ions with styrene and divinyl benzene in the presence of 2,2'-azobisisobutyronitrile. The imprinted particles were leached by HCl 6M. Various parameters in
Shuwen Li et al.
Journal of hazardous materials, 229-230, 42-47 (2012-06-29)
The magnetic Ni nanoparticles functionalized water-soluble graphene sheets nanocomposites (Ni@GSs-C(CH(3))(2)COONa) were fabricated via a facile and mild strategy. We designed a simple and efficient approach (the addition of cyano radicals) to improve the water solubility of nanocomposites. The Ni@GSs-C(CH(3))(2)COONa nanocomposites
Rongbing Yang et al.
International journal of pharmaceutics, 427(2), 320-327 (2012-03-06)
A controlled drug delivery system fabricated from a thermoresponsive polymer was designed to obtain a pulsatile release profile which was triggered by altering the temperature of the dissolution medium. Two stages of release behaviour were found: fast release for a
Dian Li et al.
Small (Weinheim an der Bergstrasse, Germany), 11(18), 2200-2208 (2015-01-20)
Circulating tumor cells (CTCs) captured from blood fluid represent recurrent cancers and metastatic lesions to monitor the situation of cancers. We develop surface-enhanced Raman scattering (SERS)-coding microsphere suspension chip as a new strategy for fast and efficient capture, recovery, and
Alexander Kurganov et al.
Journal of separation science, 38(13), 2223-2228 (2015-04-22)
Monolithic capillary columns based on pentaerythritol triacrylate and pentaerythritol tetraacrylate were synthesized using different compositions of polymerization mixtures and different polymerization conditions. The impact of porogen type and porogen/monomer ratio on the porosity of synthesized monoliths was investigated. Porogen type
Amin GhavamiNejad et al.
ACS applied materials & interfaces, 7(22), 12176-12183 (2015-05-20)
Electrospun nanofibers that contain silver nanoparticles (AgNPs) have a strong antibacterial activity that is beneficial to wound healing. However, most of the literature available on the bactericidal effects of this material is based on the use of AgNPs with uncontrolled
Página 1 de 8
Página 1 de 8