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Showing 1-30 of 34 results for "253596" within Papers
Monika Bojko et al.
Plant, cell & environment, 42(4), 1270-1286 (2018-10-27)
The importance of diadinoxanthin (Ddx) de-epoxidation in the short-term modulation of the temperature effect on photosynthetic membranes of the diatom Phaeodactylum tricornutum was demonstrated by electron paramagnetic resonance (EPR), Laurdan fluorescence spectroscopy, and high-performance liquid chromatography. The 5-SASL spin probe
N Rapoport et al.
Archives of biochemistry and biophysics, 384(1), 100-108 (2001-01-09)
To assess the effect of a polymeric surfactant, Pluronic P-105 on the activity of electron transport chains in the mitochondria of HL-60 cells, the bioreduction rates of two membrane-localized lipophilic spin probes, 16-doxylstearic acid methyl ester (16-DSME) and 5-doxylstearic acid
P Cooper et al.
Biochimica et biophysica acta, 1139(1-2), 70-76 (1992-06-09)
Spin labelled (7-, 12- and 16- doxylsteric (DS) acid) erythrocyte (red blood cell) membranes isolated from six malignant hyperthermia susceptible (MHS) and six malignant hyperthermia normal (MHN) volunteer donors were characterized using the order parameter (S) and rotational correlation time
Nisreen A Nusair et al.
Chemistry and physics of lipids, 133(2), 151-164 (2005-01-12)
X-band electron paramagnetic resonance (EPR) spectroscopy has been employed to investigate the dynamic properties of magnetically-aligned phospholipid bilayers (bicelles) based on the molecular order parameters (S(mol)), the hyperfine splitting values and the line shapes of the EPR spectra. For the
A Luquita et al.
Journal of biomedical science, 17, 8-8 (2010-02-16)
Hyaluronic acid (HA) is present in many tissues; its presence in serum may be related to certain inflammatory conditions, tissue damage, sepsis, liver malfunction and some malignancies. In the present work, our goal was to investigate the significance of hyaluronic
Anusha P Subasinghage et al.
Biochimica et biophysica acta, 1808(8), 1975-1984 (2011-05-14)
Alyteserin-1c (GLKEIFKAGLGSLVKGIAAHVAS.NH(2)), first isolated from skin secretions of the midwife toad Alytes obstetricans, shows selective growth-inhibitory activity against Gram-negative bacteria. The structures of alyteserin-1c and its more potent and less haemolytic analogue [E4K]alyteserin-1c were investigated in various solution and membrane
Kristian R Poulsen et al.
Biochemistry, 45(30), 9163-9171 (2006-07-27)
We here present a study of the interaction between the Fusarium solani pisi cutinase mutant S120A and spin-labeled 4,4-dimethyloxazoline-N-oxyl-(DOXYL)-stearoyl-glycerol substrates in a micellar system. The interaction is detected by NMR measuring changes in chemical shift for 1H and 15N as
Yimei Jia et al.
International journal of pharmaceutics, 359(1-2), 254-263 (2008-05-20)
The physicochemical properties of liposomal formulations containing gentamicin were investigated. A sustained release of gentamicin from liposomes was observed at both 4 degrees C and 37 degrees C in phosphate buffered saline. The distribution of the mean diameters of these
Monika Dzieciuch et al.
The journal of physical chemistry. B, 119(22), 6646-6657 (2015-05-13)
Sterically stabilized liposomes (SSLs) (PEGylated liposomes) are applied as effective drug delivery vehicles. Understanding the interactions between hydrophobic compounds and PEGylated membranes is therefore important to determine the effectiveness of PEGylated liposomes for delivery of drugs or other bioactive substances.
Dariusz Man et al.
Journal of liposome research, 20(3), 211-218 (2009-10-28)
Penetration of the liposome membranes formed in the gel phase from DPPC (DPPC liposomes) and in the liquid-crystalline phase from egg yolk lecithin (EYL liposomes) by the TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) and 16 DOXYL (2-ethyl-2-(15-methoxy-oxopentadecyl)-4,4-dimethyl-3-oxazolidinyloxy) spin probes has been investigated. The penetration
Virginia Sara Grancieri Amaral et al.
Biochimica et biophysica acta. Biomembranes, 1861(4), 713-728 (2019-01-15)
Psd2 is a pea defensin with 47 amino acid residues that inhibits the growth of fungal species by an uncharacterized mechanism. In this work, Psd2 interactions with model membranes mimicking the lipid compositions of different organisms were evaluated. Protein-lipid overlay
M A Baqué et al.
Biochemical and biophysical research communications, 505(4), 1038-1042 (2018-10-13)
Different spin labels were incorporated to the membranes of cultured insect UFL-AG-286 cells in order to characterize their physical properties by Electron Paramagnetic Resonance spectroscopy (EPR). The spectrum of the spin label 12-SASL incorporated to cell membranes was similar as those
Niuosha Sanaeifar et al.
Macromolecular bioscience, 20(8), e2000126-e2000126 (2020-06-23)
The release behavior of 16-doxyl stearic acid (16-DSA) from hydrogels made from bovine serum albumin (BSA) is characterized. 16-DSA serves as a model tracer molecule for amphiphilic drugs. Various hydrogel preparation procedures are tested and the fatty acid release from
Mariusz Duda et al.
Cell biochemistry and biophysics, 78(2), 139-147 (2020-04-03)
Curcumin is a yellow-orange dye widely used as a spice, food coloring and food preservative. It also exhibits a broad range of therapeutic effects against different disorders such as cancer, diabetes, or neurodegenerative diseases. As a compound insoluble in water
Matthias J N Junk et al.
Biophysical journal, 100(9), 2293-2301 (2011-05-05)
The structure of human serum albumin loaded with a metal porphyrin and fatty acids in solution is characterized by orientation-selective double electron-electron resonance (DEER) spectroscopy. Human serum albumin, spin-labeled fatty acids, and Cu(II) protoporphyrin IX-a hemin analog-form a fully self-assembled
Gábor Balogh et al.
PloS one, 6(6), e21182-e21182 (2011-06-24)
Cellular membranes respond rapidly to various environmental perturbations. Previously we showed that modulations in membrane fluidity achieved by heat stress (HS) resulted in pronounced membrane organization alterations which could be intimately linked to the expression and cellular distribution of heat
V V Belov et al.
Radiatsionnaia biologiia, radioecologiia, 43(3), 306-309 (2003-07-29)
The aim of the present work was to study by ESR-spin-probe technique the effect of the natural antioxidant alpha-tocopherol (alpha-tp) in vitro on the structural parameters (microviscosity, order parameter) of endoplasmic reticulum membranes of the mice liver cells starting from
Andrey Gurachevsky et al.
Cancer investigation, 25(6), 378-383 (2007-09-21)
Human serum albumin accumulates low molecular weight biomarkers related to cancer. This accumulation can lead to allosteric modification of albumin and change its ability to bind essential fatty acids. Using 16-doxyl-stearic acid spin probe, which is specific for albumin, the
Conan K Wang et al.
Biophysical journal, 97(5), 1471-1481 (2009-09-02)
Cyclotides are cyclic proteins produced by plants for defense against pests. Because of their remarkable stability and diverse bioactivities, they have a range of potential therapeutic applications. The bioactivities of cyclotides are believed to be mediated through membrane interactions. To
Yimei Jia et al.
Journal of liposome research, 20(2), 134-146 (2009-10-17)
The interactions between three liposomal formulations and Pseudomonas aeruginosa cells were evaluated by a lipid mixing assay and electron paramagnetic resonance (EPR) spectroscopy. The effect of the bacteria on the liposomal phase characteristics, the release of the liposomes' content, and
X Qi et al.
Circulation, 104(13), 1544-1549 (2001-09-26)
The maintenance and termination of reentry arrhythmias are determined by tissue properties such as refractoriness and conduction velocity. Although the effects of Na(+) and K(+) channel block on electrophysiological properties and defibrillation threshold (DFT) have been studied, little is known
István Voszka et al.
Chemistry and physics of lipids, 145(2), 63-71 (2006-11-23)
Small unilamellar liposomes were made of dipalmitoyl-phosphatidylcholine and dioleoyl-phosphatidylcholine, and photosensitized by a symmetrically or an asymmetrically substituted glycosilated tetraphenyl-porphyrin derivative. As differential scanning calorimetry and electron paramagnetic resonance spectroscopy (EPR) revealed these porphyrin derivatives were localized in different depth
Sharon Ruthstein et al.
Physical chemistry chemical physics : PCCP, 7(3), 524-529 (2005-02-07)
Characterizing the structure and dynamic properties of a single monolayer is a challenge due to the minute amount of material that is probed. Here, EPR spectroscopy is used for investigating the spatial and temporal organization of self-assembled monolayers of 5-
A Grammenos et al.
Biochemical and biophysical research communications, 390(1), 5-9 (2009-09-12)
In the present work, the effect of Randomly-methylated-beta-cyclodextrin (Rameb) on the microviscosity of dimyristoyl-l-alpha phosphatidylcholine (DMPC) bilayer was investigated using the electron spin resonance (ESR) technique. The ability of Rameb to extract membrane cholesterol was demonstrated. For the first time
O B Oleksiuk et al.
Biofizika, 48(2), 246-250 (2003-05-02)
The effect of lead acetate on the physical state of membrane lipids in human erythrocytes in vitro was studied using the lipophilic fluorescence probe 1,6-diphenyl-1,3,5-hexatriene and spin probes 16-doxyl-stearate and iminoxyl palmitic acid. It was shown that 2-10 microM lead
K Tsuda et al.
Biochemical and biophysical research communications, 275(3), 946-954 (2000-09-07)
It has been shown that rheological abnormality might be an etiological factor in hypertension. Recent studies have revealed that human erythrocytes possess a nitric oxide (NO) synthase and that this activation might be involved in the regulation of rheological properties
E L Mal'tseva et al.
Radiatsionnaia biologiia, radioecologiia, 43(3), 301-305 (2003-07-29)
The action of 12-O-tetradecanoyl-13-acetate (TPA) in vitro in a wide range of concentration from 10(-3) mol/l down to ultra-low doses 10(-23) mol/l and dilution 10(-24) mol/l on the microsome membranes isolated from tumor--Ehrlich ascite carcinoma (EAC) has been studied by
Maria Koter et al.
The international journal of biochemistry & cell biology, 36(2), 205-215 (2003-12-04)
Hypercholesterolemia may decrease the deformability of red blood cells which impairs their hemorheological behavior and promotes atherosclerosis. The study involved 60 hypercholesterolemic patients and 30 healthy individuals as the control group. The membrane fluidity of erythrocytes was estimated by a
X N Zhang et al.
Die Pharmazie, 62(5), 368-371 (2007-06-15)
The aim of this paper is to investigate the permeation mechanism of the hydrophobic drug, paclitaxel in intestinal membranes of mice in relation to enhancers and preparation factors. The alteration fluidity of lipid and protein in mucous membrane were determined
P V Dubovskii et al.
Journal of molecular biology, 305(1), 137-149 (2000-12-15)
Carditoxins (CTXs) from cobra snake venoms, the basic 60-62 residue all-beta sheet polypeptides, are known to bind to and impair the function of cell membranes. To assess the membrane induced conformation and orientation of CTXs, the interaction of the P-type
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