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Alexey Popov et al.
The journal of physical chemistry. B, 116(40), 12332-12340 (2012-09-21)
Macromolecular characteristics and morphology of water-soluble complexes between sodium poly(styrene sulfonate) (PSS) and tetradecyltrimethylammonium bromide have been followed as a function of surfactant-to-polymer charge ratio (S/P) to elicit possible changes in the complexation mechanism. As revealed by light scattering, shorter
Dong-Hun Kim et al.
ChemSusChem, 5(10), 2053-2057 (2012-09-05)
Hole extraction in organic photovoltaic cells (OPVs) can be modulated by a surface-enriched layer formed on top of the conducting polymer-based hole extraction layer (HEL). This tunes the surface work function of the HEL to better align with the ionization
Guichen Zhou et al.
International journal of nanomedicine, 8, 877-887 (2013-03-15)
The aim of this report was to introduce a novel "core-membrane" microgel drug-delivery device for spontaneously pulsed release without any external trigger. The microgel core was prepared with alginate and chitosan. The semipermeable membrane outside the microgel was made of
Jagadeesh K Venkatesan et al.
Pharmaceutics, 12(3) (2020-04-05)
The delivery of therapeutic genes in sites of articular cartilage lesions using non-invasive, scaffold-guided gene therapy procedures is a promising approach to stimulate cartilage repair while protecting the cargos from detrimental immune responses, particularly when targeting chondroreparative bone marrow-derived mesenchymal
Alwin M D Wan et al.
Biochimica et biophysica acta, 1830(9), 4314-4320 (2013-04-10)
Changes in fibronectin (Fn) matrix remodeling contribute to mammary tumor angiogenesis and are related to altered behavior of adipogenic stromal cells; yet, the underlying mechanisms remain unclear due in part to a lack of reductionist model systems that allow the
M Saginur et al.
American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons, 12(11), 3152-3154 (2012-08-21)
Diarrhea is a common manifestation of disease in recipients of intestinal transplants. Sodium Polystyrene Sulfonate administration has been associated with significant bowel injury. Recognizing the diagnosis requires clinical awareness and comprehensive review of intestinal biopsies. We present an illustrative case
Colonic ulceration in a patient with renal disease and hyperkalemia.
Johanna L Chelcun et al.
JAAPA : official journal of the American Academy of Physician Assistants, 25(10), 34-34 (2012-11-03)
Kwan Kim et al.
ACS applied materials & interfaces, 4(10), 5498-5504 (2012-10-10)
Many drugs are charged molecules and are weak bases or acids having counterions. Their binding to biological surfaces is generally difficult to assess by vibrational spectroscopy. In this work, we demonstrated the potential of surface-enhanced Raman scattering (SERS) conducted using
Xubo Zhao et al.
Molecular pharmaceutics, 9(11), 3330-3339 (2012-08-31)
Biocompatible superparamagnetic polyelectrolyte hybrid hollow microspheres ((CS/Fe(3)O(4)-CA)(3)-CS-NH-CH(2)-PEG) were successfully prepared by PEGylation of multilayered polyelectrolyte hybrid shell encapsulated polystyrene sulfonate (PSS) microsphere templates fabricated by the layer-by-layer self-assembly of chitosan (CS) and citrate modified ferroferric oxide magnetic nanoparticles (Fe(3)O(4)-CA), after
Vitaliy Starchenko et al.
The journal of physical chemistry. B, 116(51), 14961-14967 (2012-11-30)
Herein we report on the influence of salt and polyelectrolyte (PEL) concentration, molecular weight, and mixing ratio on the size and size distribution of polyelectrolyte complex (PEC) particles composed of cationic poly(diallyldimethylammonium chloride) and anionic poly(styrene sulfonic acid). The unusual
S Oughlis et al.
Journal of biomedical materials research. Part A, 101(2), 582-589 (2012-09-11)
Osseointegration of metallic implants used in orthopedic surgery requires that osteoprogenitor cells attach and adhere to the surface, then proliferate, differentiate into osteoblasts, and finally produce mineralized matrix. Because the ability of progenitor cells to attach to a scaffold surface
Ziv Harel et al.
The American journal of medicine, 126(3), 264-264 (2013-01-17)
Sodium polystyrene sulfonate (Kayexalate; Sanofi-Aventis, Paris, France) is a cation-exchange resin routinely used in the management of hyperkalemia. However, its use has been associated with colonic necrosis and other fatal gastrointestinal adverse events. Although the addition of sorbitol to sodium
Thi H Nguyen et al.
Nature chemistry, 5(3), 221-227 (2013-02-21)
Basic fibroblast growth factor (bFGF) is a protein that plays a crucial role in diverse cellular functions, from wound healing to bone regeneration. However, a major obstacle to the widespread application of bFGF is its inherent instability during storage and
Reine Nehmé et al.
Methods in molecular biology (Clifton, N.J.), 984, 191-206 (2013-02-07)
Capillary electrophoresis (CE) is an interesting technique for protein and peptide analysis. However, one of the major problems concerns sample adsorption on the internal capillary wall. The use of non-covalent coatings using highly charged polyelectrolytes is an efficient, simple, and
Swee Pin Yeap et al.
Langmuir : the ACS journal of surfaces and colloids, 28(42), 14878-14891 (2012-10-03)
A detailed study on the conflicting role that colloid stability plays in magnetophoresis is presented. Magnetic iron oxide particles (MIOPs) that were sterically stabilized via surface modification with poly(sodium 4-styrene sulfonate) of different molecular weights (i.e., 70 and 1000 kDa)
M Bretaudeau Deguigne et al.
Clinical toxicology (Philadelphia, Pa.), 51(4), 243-248 (2013-04-10)
The objective of this study was to evaluate the effects of early digestive tract decontamination on the severity of acute-on-chronic lithium poisoning (acute poisoning in patients under long-term therapy). This was an observational and retrospective study of acute-on-chronic lithium overdoses
E V Durdenko et al.
Bioorganicheskaia khimiia, 38(4), 421-430 (2012-11-30)
X-ray analysis shows the presence of specific anion-binding sites in proteins for sulfate, citrate and phosphate ions, but the functional role of these anions is not always clear. Thus, it is unknown which of the two types, mono- or divalent
Xin Zhang et al.
Advanced materials (Deerfield Beach, Fla.), 24(33), 4574-4577 (2012-07-19)
Au-Ag bimetallic core-shell nanoparticles are synthesized in situ in polyelectrolyte multilayers via a sequential ion-exchange/reduction process. The Au-Ag bimetallic nanoparticles show a higher catalytic activity than Au and Ag monometallic ones for the reduction of 4-nitrophenol by NaBH(4) .
Joseba Irigoyen et al.
Macromolecular rapid communications, 33(22), 1964-1969 (2012-08-31)
Responsive polyelectrolyte multilayers (PEMs) of poly(diallyl dimethyl ammonium chloride) (PDADMAC) and poly(styrene sodium sulfonate) (PSS) with thicknesses between 350 and 400 nm for 11 deposited polyelectrolyte layers were fabricated assembling the polyelectrolytes at 3 M NaCl. When the 3 M
Karen M Gallegos et al.
Frontiers in microbiology, 9, 3269-3269 (2019-02-01)
Chlamydia is the most frequently reported sexually transmitted bacteria causing 2.9 million infections annually in the United States. Diagnosis, treatment, and sequelae of chlamydial disease cost billions of dollars each year in the United States alone. Considering that a heparin
Yu-Jing Tan et al.
Analytical chemistry, 84(19), 8357-8363 (2012-09-07)
Sequential adsorption of poly(styrene sulfonate) (PSS) and proteases in porous nylon yields enzymatic membrane reactors for limited protein digestion. Although a high local enzyme density (~30 mg/cm(3)) and small pore diameters in the membrane lead to digestion in <1 s
Asking the question again: are cation exchange resins effective for the treatment of hyperkalemia?
Kamel S Kamel et al.
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 27(12), 4294-4297 (2012-09-20)
Julia Schneider et al.
Langmuir : the ACS journal of surfaces and colloids, 29(12), 4092-4095 (2013-02-27)
When polymeric nanoparticles (NPs) are formed by nanoprecipitation, which is a nucleation-growth process, the control over size requires changing the polymer concentration or solvent composition. Here, we demonstrate that the NP size can be controlled independent of polymer variables by
Johannes Frueh et al.
The journal of physical chemistry. B, 116(40), 12257-12262 (2012-09-18)
Polyelectrolyte (PE) multilayer (PEM) thin films prepared by layer-by-layer self-assembly on flexible substrates are exposed to elongation in many fields of technology. Upon elongation, these types of films are showing interesting, but not understood, phenomena, such as controlled wetting, stimuli-responsive
Assad U Khan et al.
ACS nano, 13(4), 4255-4266 (2019-03-26)
State-of-the-art commercial light-reflecting glass is coated with a metalized film to decrease the transmittance of electromagnetic waves. In addition to the cost of the metalized film, one major limitation of such light-reflecting glass is the lack of spectral selectivity over
Walter J Dressick et al.
Langmuir : the ACS journal of surfaces and colloids, 28(45), 15831-15843 (2012-10-31)
We systematically investigate the effects of divalent anions on the assembly of polyelectrolyte multilayers by fabricating polystyrene sulfonate (PSS)/polyallylamine hydrochloride (PAH) multilayer films from aqueous solutions containing SO(4)(2-), HPO(4)(2-), or organic dicarboxylate dianions. The chosen concentrations of these anions (i.e.
Johannes Frueh et al.
Physical chemistry chemical physics : PCCP, 15(2), 483-488 (2012-11-23)
Polyelectrolyte multilayers (PEMs) deposited on flexible supports are promising candidates for many applications ranging from controlled wettability over stimuli responsive nanovalves to lithography free surface structuring. Since many potential applications involve elongation of these films, we investigated the effect of
Maxim V Kiryukhin et al.
Macromolecular rapid communications, 34(1), 87-93 (2012-11-07)
Patterned arrays of light-responsive microchambers are suggested as candidates for site-specific release of chemicals in small and precisely defined quantities on demand. A composite film is made of poly(allylammonium)-poly(styrene sulfonate) multilayers and gold nanoparticles incorporated between subsequent stacks of polyelectrolytes.
Yuanyuan Han et al.
Macromolecular bioscience, 12(10), 1436-1442 (2012-09-12)
Annealing of PDADMAC/PSS multilayer microcapsules assembled on PSS-doped CaCO(3) particles at 80 °C for 30 min reduces their size dramatically from 6.9 ± 0.3 to 3.1 ± 0.5 µm. Methylene blue molecules are encapsulated by spontaneous deposition and post-annealing with
Eduardo Lanzagorta Lanzagorta Garcia et al.
Materials (Basel, Switzerland), 14(5) (2021-03-07)
An innovative antimicrobial technology for plastic surfaces is presented. We report the synthesis and scale-up of triangular silver nanoplates (TSNPs) and their integration into polycaprolactone (PCL) and polylactic acid (PLA) polymers through a solvent-casting technique. The TSNPs have a high
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