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Membranes, Artificial
Biomaterials (32)34 2011
Abstract
We have developed a bioreactor containing single hollow fiber membranes that requires relatively small amounts of cells. Special hollow fiber membranes with the skin layer on the outer surface and consisting of polyethersulfone/polyvinylpyrrolidone were developed. The results suggested that such hol...
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PMID: 21872923
PDF is available here.
PDF is available here.
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Biomaterials (32)34 2011
Abstract
We have developed a bioreactor containing single hollow fiber membranes that requires relatively small amounts of cells. Special hollow fiber membranes with the skin layer on the outer surface and consisting of polyethersulfone/polyvinylpyrrolidone were developed. The results suggested that such hol...
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PMID: 21872923
PDF is available here.
PDF is available here.
Biomaterials (32)34 2011
Abstract
We have developed a bioreactor containing single hollow fiber membranes that requires relatively small amounts of cells. Special hollow fiber membranes with the skin layer on the outer surface and consisting of polyethersulfone/polyvinylpyrrolidone were developed. The results suggested that such hol...
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PMID: 21872923
PDF is available here.
PDF is available here.
Abstract
We hypothesized that hemofilters composed of porous membranes or cytokine-adsorbing membranes could remove HMGB1 from the blood. We performed experimental hemofiltration in vitro using four types of hemofilters composed of different membranes specifically designed for continuous hemofiltration. The...
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PMID: 21884474
PDF is available here.
PDF is available here.
Abstract
Abstract
This study assessed the role of potassium (K+), magnesium (Mg2+), and calcium (Ca2+) ions in the enhanced biological phosphorus removal (EBPR) from wastewaters using a membrane bioreactor (MBR). A linear relationship in the anaerobic and aerobic/ anoxic phases for P(uptake) versus P(release) was obta...
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PMID: 21790079
PDF is available here.
PDF is available here.
Abstract
We introduce the dimensionless parameter, called by us a Katchalsky number (Ka), modifies R(C) of membrane transport. The critical value of this number well describes a moment of transition from the state of diffusion into convective diffusion membrane transport....
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PMID: 21613674
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1808)9 2011
Abstract
We iteratively performed atomistic molecular dynamics simulations and biophysical measurements to probe the interaction of a cyclic antimicrobial peptide and its inactive linear analogue with model membranes. We establish that, relative to the linear peptide, the cyclic one binds stronger to negativ...
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PMID: 21586269
PDF is available here.
PDF is available here.
Abstract
Nano-hydroxyapatite (n-HA)/poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone) (PCL-PEG-PCL, PCEC) composite membranes were prepared by solvent casting and evaporation method. The structure and properties of the membranes were investigated by Fourier transform infrared...
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PMID: 21290585
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1808)9 2011
Abstract
The stabilizing effect of cholesterol on oxidized membranes has been studied in planar phospholipid bilayers and multilamellar 1-palmitoyl-2-linoleoyl-phosphatidylcholine vesicles also containing either 1-palmitoyl-2-glutaroyl-phosphatidylcholine or 1-palmitoyl-2-(13-hydroxy-9,11-octadecanedienoyl)-p...
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PMID: 21600189
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1808)9 2011
Abstract
Actinoporins constitute a group of small and basic α-pore forming toxins produced by sea anemones. They display high sequence identity and appear as multigene families. They show a singular behaviour at the water-membrane interface: In aqueous solution, actinoporins remain stably folded but, upon in...
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PMID: 21621507
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1808)9 2011
Abstract
We studied an impact of visible light in combination with a photosensitizer on translocation of various substances across artificial (vesicular and planar) bilayer lipid membranes (BLMs). Along with induction of carboxyfluorescein leakage from liposomes, pronounced stimulation of lipid flip-flop bet...
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PMID: 21663731
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1808)9 2011
Abstract
We assessed the microscopic interactions between ALPS and two phospholipid membranes at different degrees of lipid packing by explicit molecular dynamics (MD). Simulations were performed within loosely packed membranes composed of a mixture of dioleoylphosphatidylcholine (DOPC)/dioleoylglycerol (DOG...
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PMID: 21600869
PDF is available here.
PDF is available here.
Biochimica et Biophysica Acta (1808)9 2011
Abstract
We have demonstrated that (i) major cholesterol auto-oxidation products, 7β-hydroxycholesterol (7β) and 7-ketocholesterol (7keto), rendered vesicles more responsive to temperature changes; (ii) 7keto imparted greater thermo-induced membrane dynamics than 7β; (iii) 7β and 7keto vesicles synergist...
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PMID: 21600872
PDF is available here.
PDF is available here.
Abstract
We incorporate the electrostatic-hydrogen bond switch mechanism into the Gouy-Chapman model for a membrane that is composed of PA and a hydrogen bond-donating zwitterionic lipid. To this end, our model integrates into the Gouy-Chapman approach a recently suggested electrostatic model for zwitterioni...
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PMID: 21406179
PDF is available here.
PDF is available here.
Abstract
These results indicate that the present NDT cores, in particular the linear-shaped, centrosymmetric naphtho[2,3-b:6,7-b']dithiophene, are promising building blocks for the development of organic semiconducting materials....
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PMID: 21388124
PDF is available here.
PDF is available here.
Abstract
We demonstrate the technique in dye infusion experiments that provide cylindrical and spherical distributions when infusing with porous membrane and conventional single-port catheters, respectively. This optical method incorporates important parameters, such as optimum camera exposure, captured came...
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PMID: 21342811
PDF is available here.
PDF is available here.
Abstract
Predictable regeneration of lost periodontal tissues in furcations is difficult to achieve. This paper investigates the efficacy of different treatment modalities for Class II molar furcations.
Publications in English were searched using PubMed, Medline, and Cochrane...
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PMID: 21091347
PDF is available here.
PDF is available here.
Abstract
In this paper, the poly(vinyl alcohol)/poly(epsilon-caprolactone)-PEG-poly(epsilon-caprolactone)/nano-hydroxyapatite (PVA/PCEC/n-HA) composite membranes were prepared by solution casting and evaporation methods. The effect of n-HA content on the properties of the composite membranes...
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PMID: 21449393
PDF is available here.
PDF is available here.
Abstract
We have created a novel enzyme reactor using electric field-mediated orientation and immobilization of proteolytic enzymes (trypsin/chymotrypsin) on biocompatible PVDF membranes in a continuous flow-through chamber. Using less than 5min, this reactor in various enzyme combinations can produce enhanc...
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PMID: 21338726
PDF is available here.
PDF is available here.
Abstract
More effective removal of pro- and anti-inflammatory cytokines may play an important role in the treatment of sepsis. Plasmadiafiltration (PDF) with a larger selective plasma separator was performed to study the cytokine and plasma protein permeability profiles of the membrane in an...
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PMID: 21272259
PDF is available here.
PDF is available here.
Abstract
Porous pigments in which chemically responsive dyes have been immobilized in a matrix of organically modified siloxanes (ormosils) have been prepared and characterized by AFM, TEM, EDS, and optical analysis. In typical chemical sensing applications, an array of 36 different porous or...
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PMID: 21423939
PDF is available here.
PDF is available here.
Tsitologiia (53)5 2011
Abstract
The effect of the membrane dipole potential (Phid) on a conductance and a steady-state number of functioning channels formed by cyclic lipodepsipeptide syringomycin E (SRE) in bilayer lipid membranes made from phosphocholine and bathed in 0.4 M solution of sodium salts of aspartate, gluconate and chl...
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PMID: 21786689
PDF is available here.
PDF is available here.
Abstract
To separate essential oil of Caryophyllix flos from oil-in-water emulsion, and to enrich the essential oil by microfiltration (MF).
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PMID: 21473150
PDF is available here.
PDF is available here.
Abstract
We describe how to extract and quantify Rubisco activase content in leaf....
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PMID: 20960145
PDF is available here.
PDF is available here.
Abstract
Redox-dependent thylakoid protein phosphorylation regulates both the short- and long-term acclimation of the photosynthetic apparatus to changes in environmental conditions. The major thylakoid phosphoproteins belong to photosystem II (D1, D2, CP43, PsbH) and its light-harvesting antenna (Lhcb1, Lhc...
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PMID: 20960130
PDF is available here.
PDF is available here.
Abstract
The aim of this study was to clarify the adjunctive effect of enamel matrix derivative (EMD) on expanded polytetrafluoroethylene membrane guided tissue regeneration (GTR)-based root coverage by creating gingival recessions in beagle dogs. Recessions were treated with GTR + EMD, GTR alone, or neither...
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PMID: 21556381
PDF is available here.
PDF is available here.
Abstract
This study aimed to evaluate the influence of labial alveolar bone thickness and the corresponding vertical bone loss on postoperative gingival recessions around anterior maxillary dental implants. Using cone beam computed tomography (CBCT) scanning, the temporal changes of three-dimensional images o...
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PMID: 21556378
PDF is available here.
PDF is available here.
Acta Biomaterialia (7)1 2011
Abstract
We report the expansion and functional differentiation of rat embryonic liver cells on biodegradable and synthetic polymeric membranes in comparison with traditional substrates, such as collagen and polystyrene culture dishes. Membranes prepared from chitosan and modified polyetheretherketone were u...
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PMID: 20691288
PDF is available here.
PDF is available here.
Acta Biomaterialia (7)1 2011
Abstract
A periodontal membrane with a graded structure allows tailoring of the layer properties to design a material system that will retain its physical, chemical and mechanical characteristics for a period long enough to optimize periodontal regeneration. In this work a novel functionally...
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PMID: 20801241
PDF is available here.
PDF is available here.
Acta Biomaterialia (7)1 2011
Abstract
Electrospun poly(lactic acid) (PLLA) nanofibers (NF) were modified with cationized gelatin (CG) to improve their compatibility with chondrocytes and to show in vitro and in vivo the potential applications of CG-grafted PLLA nanofibrous membranes (CG-PLLA NFM) as a cartilage tissue en...
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PMID: 20728584
PDF is available here.
PDF is available here.
Critical Care Medicine (39)1 2011
Abstract
The objective of this study was to test the ability of myoglobin removal of a novel, high-permeability polysulphone dialyzer in acute kidney injury as a result of rhabdomyolysis.
Intensive care unit of a tertiary care hospital.
Six patients (one female; aged 24, 36, 41, 55, 63, and 65 yrs) with olig...
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PMID: 21057310
PDF is available here.
PDF is available here.
Abstract
Stable, insoluble Langmuir monolayer films composed of Staphylococcus aureus-specific lytic bacteriophage were formed at an air-water interface and characterized. The phage monolayer was very strong, withstanding a surface pressure of ∼40 mN/m at 20 °C. The surface pressure-area (Π-A) isotherm p...
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PMID: 20843668
PDF is available here.
PDF is available here.
Abstract
We have previously shown that besides its interaction with anionic lipids, the cyt c is also able to cross neutral lipid membranes. In this work, with the help of AFM and punch-through experiments, we have measured the force required to penetrate the membrane in the fluid and in the gel phases with...
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PMID: 20832261
PDF is available here.
PDF is available here.
Abstract
Intermittent membrane aeration provides a substantially improved energy efficiency in hollow fibre-based immersed membrane bioreactors (HF iMBRs). The benefits of intermittent aeration have been assessed with respect to sustaining a target flux and/or limiting the fouling rate to a sustainable level...
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PMID: 21436559
PDF is available here.
PDF is available here.
Abstract
Biocompatibility of dialysis membranes can be defined as the sum of specific interactions between blood and the dialysis membranes. In the early phase of hemodialysis therapy, acute side effects are the main issues for treatments of ESRD patients and biocompatibility of dialysis membranes are evalua...
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PMID: 20938134
PDF is available here.
PDF is available here.
Abstract
Gejyo and coworkers identified β(2)-microglobulin (β(2)-MG) as the major constitutional protein of dialysis-related amyloidosis (DRA) a quarter of a century ago. Since then, β(2)-MG has been the most extensively studied low molecular weight protein in end-stage renal disease. The onset of DRA may...
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PMID: 20938132
PDF is available here.
PDF is available here.
Abstract
Several types of dialyzer with enhanced internal filtration have been introduced for clinical application as a means of improving the efficiency of solute removal, and the enhanced internal filtration in these dialyzers has increased the convective transport of the solute besides the diffusive trans...
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PMID: 20938136
PDF is available here.
PDF is available here.
Abstract
Anemia secondary to chronic kidney disease is a complex syndrome. Adequate dialysis can contribute to its correction by removing small and possibly medium/large molecules that may inhibit erythropoiesis. A clear relationship among hemoglobin, erythropoiesis stimulating agent (ESA) dose and increase...
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PMID: 20938137
PDF is available here.
PDF is available here.
Abstract
Over 2,000 substances have been reported as uremic substances that are accumulated or produced due to renal failure that causes various clinical symptoms and complications. These substances include many medium to large molecular weight (MW) substances such as β(2)-microglobulin (β(2)-MG). In hemof...
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PMID: 20938139
PDF is available here.
PDF is available here.
Abstract
Japanese hemodialysis (HD) patients have two remarkable characteristics, that is they have a longer period of chronic HD and better clinical outcome than American and European HD patients. This might be partly explained by the very low prevalence of renal transplantation in Japan. As a result, young...
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PMID: 20938138
PDF is available here.
PDF is available here.
Abstract
Over the last 40 years the technical obstacles which prevented a convective contribution to diffusive dialysis have been overcome. Hemodiafiltration represents a natural evolution of intermittent extracorporeal blood purification and the technology is now available to offer this as standard treatmen...
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PMID: 20938126
PDF is available here.
PDF is available here.
Abstract
Chronic kidney disease (CKD) is characterized by the progressive retention of a myriad of compounds, several of which play a role in cardiovascular damage, a major cause of mortality in CKD. Over the past years, especially protein-bound compounds (e.g. indoxylsulfate and p-cresylsulfate) and/or midd...
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PMID: 20938131
PDF is available here.
PDF is available here.
Abstract
I would be recommended to employ less albumin-leakage dialyzers when a post-dilution HDF is performed with a large amount of fluid exchange.
Copyright © 2011 S. Karger AG, Basel....
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PMID: 20938135
PDF is available here.
PDF is available here.
Abstract
We have had a 76-year-old male subject who switched from AFHD to AFB, mainly because of cardiovascular stability. Several factors may contribute to hemodynamic adaptation during AFB. One theory is that an increase in peripheral vascular tone and vascular refilling rate is caused by the high sodium c...
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PMID: 20938140
PDF is available here.
PDF is available here.
Abstract
Oxidative stress and resultant accumulation of advanced glycation end products (AGEs) are closely related to the development of cardiovascular disease, which is the major cause of death among end-stage renal disease patients. Several markers of oxidative stress, such as malondialdehyde, oxidized low...
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PMID: 20938133
PDF is available here.
PDF is available here.
Abstract
The golden target for dialysis therapy should guarantee longer survival and a higher quality of life without dialysis-related complications. In order to achieve this target, dialysis prescriptions have been modified by increasing the efficiency of uremic solute removal and improving biocompatibility...
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PMID: 20938125
PDF is available here.
PDF is available here.
Abstract
This paper reports on a pilot trial of a novel MBR developed with coarse-pore membrane module by the authors. The plant was operated for 370 days with up to 7 m(3)/d raw saline sewage after 3-mm screening. The plant performed successfully without membrane fouling for 270 days except an accidental pow...
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PMID: 21508559
PDF is available here.
PDF is available here.
Lab On a Chip (10)23 2010
Abstract
We describe the design, fabrication, and testing of a microfabricated metering rotary nanopump for the purpose of driving fluid flow in microfluidic devices. The miniature peristaltic pump is composed of a set of microfluidic channels wrapped in a helix around a central camshaft in which a non-cylin...
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PMID: 20959938
PDF is available here.
PDF is available here.
Abstract
An experimental validation of electropermeabilization inducing field distribution in tissue predicted by simulation for needle electrodes is described giving a direct visualization of the permeabilization of a 2D tissue.
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PMID: 20924523
PDF is available here.
PDF is available here.
Abstract
A 13-year-old male was admitted to undergoing correction of a pulmonary venous baffle stenosis (PVBS) after a modified Senning procedure was performed by the age of five months. Recurrent Pulmonary congestion and pneumonia episodes were followed by echocardiography and cardiac catheterization that co...
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PMID: 21340391
PDF is available here.
PDF is available here.
Abstract
Aim of the study was to identify long-term differences of middle and high-molecular-weight serum constituents under high- and low-flux hemodialysis treatments. Thus, the entire predialytic serum proteomes had to be analyzed using identical hemodialysis membrane material but with diff...
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PMID: 21137035
PDF is available here.
PDF is available here.
Bioresource Technology (101)23 2010
Abstract
A novel enzyme membrane reactor with sandwich structure has been developed by confining glucosidase between two sheets of ultrafiltration membranes to effectively convert maltose to isomaltooligosaccharides (IMOs). The hydrophilic ultrafiltration membranes, which were prepared by phase inversion met...
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PMID: 20655202
PDF is available here.
PDF is available here.
Lab On a Chip (10)22 2010
Abstract
We investigate the nanofluidic membrane performance using custom diffusion and gas testing apparatuses to quantify molecular release rate and process uniformity as well as mechanical strength using a gas based burst test. The kinetics of the constrained zero-order release is probed with molecules pr...
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PMID: 20697650
PDF is available here.
PDF is available here.
Macromolecular Bioscience (10)11 2010
Abstract
We hypothesized that this can be improved by electro-spun, supramolecular polymer membranes which show clear benefits in ease of processability. We found that after 7 d, in comparison to conventional microporous membranes, renal tubular cells cultured on top of our fibrous supramolecular membranes...
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PMID: 20715132
PDF is available here.
PDF is available here.
Macromolecular Bioscience (10)11 2010
Abstract
We combined micromolding and microablation technologies to create muscle tissue engineering scaffolds from the biodegradable elastomer poly(glycerol sebacate). These scaffolds exhibited well defined surface patterns and pores and robust elastomeric tensile mechanical properties. Cultured C2C12 muscl...
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PMID: 20718054
PDF is available here.
PDF is available here.
Journal of Biological Chemistry (285)45 2010
Abstract
We examined the effect of indomethacin on membrane lateral heterogeneity. Fluorescence lifetime imaging of cells expressing lipid-anchored probes revealed that treatment of BHK cells with therapeutic levels of indomethacin enhances cholesterol-dependent nanoclustering, but not cholesterol-independen...
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PMID: 20826816
PDF is available here.
PDF is available here.
Proteomics Clinical Applications (4)10-11 2010
Abstract
dialysis-induced inflammatory response including leukocyte and complement activation is considered a significant cofactor of chronic morbidity in long-term hemodialysis (HD) patients. The aim of this study was to provide better insight into its molecular background.
i...
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PMID: 21137026
PDF is available here.
PDF is available here.
Analyst (Cambridge UK) (135)11 2010
Abstract
A novel chemiluminescent (CL) technique for the rapid determination of proteins on a membrane is described. The method utilizes an interaction between luminol-labeled alginic acid macromolecule and proteins. The synthesis of the macromolecular probe consists of the oxidation of alginic acid with NaI...
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PMID: 20865196
PDF is available here.
PDF is available here.
Abstract
We sought to determine whether fetal wound healing includes a hitherto unrecognized cellular component. Two sets of fetal lambs underwent consecutive experiments at mid-gestation. First, fetuses received an intra-amniotic infusion of labeled autologous amniotic mesenchymal stem cells (aMSCs), in par...
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PMID: 20979452
PDF is available here.
PDF is available here.