Abstract：
:The influence of the temperature on the adsorption of monomeric and micellar solutions of the anionic surfactant sodium dodecyl sulfate (SDS) on phosphatidylcholine (PC) liposomes was investigated using the fluorescent probe 2-(p-toluidinyl)-naphthalene-6-sodium sulfonate (TNS). The number of adsorbed molecules was quantified by measuring changes in the electrostatic potential (Psi(o)) of the liposomes/probe during an incubation with SDS at varying temperatures. At low surfactant concentrations (from 0.05 to 0.25 mM), the increase in temperature reduced the number of surfactant molecules incorporated per vesicle regardless of the incubation time, whereas at high surfactant concentrations (from 0.50 to 1.0 mM) the incubation time has an opposite effect on this process. Thus, after 10s, the surfactant adsorption decreased with temperature, yet it increased progressively with time. The adsorption was linear with temperature below critical micellar concentration (CMC) of SDS and this linear tendency did not change above CMC. This suggests an adsorption of SDS monomers regardless of the surfactant concentration.
journal_name
Chem Phys Lipidsjournal_title
Chemistry and physics of lipidsauthors
Cócera M,López O,Estelrich J,Parra JL,de la Maza Adoi
10.1016/s0009-3084(03)00022-7subject
Has Abstractpub_date
2003-06-01 00:00:00pages
15-22issue
1eissn
0009-3084issn
1873-2941pii
S0009308403000227journal_volume
124pub_type
杂志文章abstract：:Based on size and compositional data, models for the two major density subclasses of human serum high density lipoproteins have been developed. Descriptions of both the surface structure of the high density lipoproteins and the structure of their apolar core regions are integral parts of these models. The surface is d...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(75)90054-7
更新日期：1975-04-01 00:00:00
abstract：:The synthesis and self-assembling properties of a model compound in a new class of cationic phospholipids with a highly unsaturated conjugated fatty acid are described. In addition, the potential of this new lipid as a nucleic acid carrier was evaluated through lipoplex formulations employing 1,2-dioleoyl-sn-glycero-3...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2013.03.002
更新日期：2013-05-01 00:00:00
abstract：:Determining the particle size and number of lipoprotein components found in blood plasma (HDL, LDL and VLDL) has become an important clinical tool in diagnosing risk of cardiovascular disease. Proton (1H) NMR spectroscopy methods to quantify lipoprotein particle subclasses have been advancing since NMR lineshape analy...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104874
更新日期：2020-05-01 00:00:00
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journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/s0009-3084(00)00185-7
更新日期：2000-11-01 00:00:00
abstract：:The fertilising ability of human spermatozoa may be impaired by inflammations of the genital tract, although details of these processes are still unknown. Hypochlorous acid (HOCl), an important product of myeloperoxidase released from stimulated neutrophils, induces a concentration-dependent increase in externalisatio...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2005.02.015
更新日期：2005-06-01 00:00:00
abstract：:A known intermediate, (3 R, S; 5 R,S)-3,5-dimethyl-6-triphenylmethyloxyhexanal gave, in a Wittig reaction with 1-octyltriphenylphosphonium bromide and n-butyl lithium in anhydrous tetrahydrofuran, a mixture of olefininic compounds. Trityl deprotection and hydrogenation of the double bond afforded the (2 R, S; 4 R,S)-2...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(96)02570-4
更新日期：1996-08-19 00:00:00
abstract：:New 1,20-substituted eicosanes carrying phosphate headgroups and readily derivatizable thiol, maleimido, and activated carboxylic ester moieties were prepared. The C20-backbone of these molecules was assembled by a halopolycarbon homologation from 1,8-dichlorooctane and 1,6-dibromohexane. 20-Mercapto- and 20-maleimido...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2004.09.016
更新日期：2005-01-01 00:00:00
abstract：:Cold atmospheric plasma (CAP) is an emerging source for the locally defined delivery of reactive species, and its clinical potential has been identified in the control of inflammatory processes, such as acute and chronic wounds, or cancerous lesions. Lipids, due to their localization and chemical structure as ideal ta...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2019.104786
更新日期：2020-01-01 00:00:00
abstract：:Characterization of phospholipids (PLs) and phytosterols were determined in Schisandra chinensis (S. chinensis) oil by UPLC-Q/TOF-MSE. The determination process was based on feature fragment information of components generated by the MSE detector. A total of 49 and 39 PLs were identified in S. chinensis oil under nega...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2019.03.003
更新日期：2019-07-01 00:00:00
abstract：:Surface plasmon resonance (SPR) has become one of the most important techniques for studying macromolecular interactions. The most obvious advantages of SPR over other techniques are: direct and rapid determination of association and dissociation rates of binding process, no need for labelling of protein or lipids, an...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/j.chemphyslip.2006.02.010
更新日期：2006-06-01 00:00:00
abstract：:The role of the ceramide moiety of gangliosides, together with the deriving aggregative properties of ganglioside in solution, in the process of ganglioside-cell interactions was studied. The natural GM1(stearoyl) and the synthetic GM1(acetyl), containing the stearoyl and acetyl groups as the acyl moiety, respectively...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(92)90048-t
更新日期：1992-07-01 00:00:00
abstract：:The properties of cholesterol in bilayers of egg phosphatidylcholine (PC) were investigated directly by means of 2H-NMR of specifically-deuterated species (C3, C7, C26, C27). Quadrupole splittings were a measure of molecular ordering, and relaxation times T1 and T2e were indicators of rates of motion. The importance o...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(82)90072-x
更新日期：1982-12-01 00:00:00
abstract：:Small unilamellar vesicles (SUV) formed by egg yolk phosphatidylcholine (PC) and free oleic acid (OA) undergo aggregation induced by Ca2+ at pH greater than 7.0. The rate of the process, as monitored by turbidity changes, presents a linear dependence on phospholipid concentration and a hyperbolic dependence on Ca2+ co...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(88)90040-0
更新日期：1988-04-01 00:00:00
abstract：:We have studied the interaction of water with the lipid head group by gravimetrically measuring the lipid water adsorption and the lateral dc electrical conductivity increase resulting from this hydration. We have done this for dimyristoyl phosphatidylcholine (DMPC) having protonated or deuterated hydrocarbon chains. ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2004.05.003
更新日期：2004-09-01 00:00:00
abstract：:The proteolytic activity of an aspartyl protease of Mucor miehei was correlated with the adsorption of the protease to lipid vesicles. It was observed that the presence of phosphatidylethanolamines (PE's) in the membrane increased the enzyme activity in a 20% in the gel phase and 10% in the fluid phase. The effects of...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(02)00188-3
更新日期：2003-01-01 00:00:00
abstract：:Poly(ethylene glycol)-coated liposomes were prepared with two new synthesised pegylated cholesterol (Chol) derivatives linked via carbamate bond. Poly(ethylene glycol) (PEG) was directly linked to Chol (PEG-Chol) or through a space arm of diaminebutane (PEG-L-Chol). In buffer, the physicochemical properties of PC/Chol...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(01)00178-5
更新日期：2001-11-01 00:00:00
abstract：:(1) An analysis has been conducted of the lipids present in three obligately anaerobic bacteria isolated from the ovine rumen belonging to the genus Butyrivibrio. Two of these organisms are rich in phospholipase (A1 + A2) activity, and appear to be different strains of the species fibrisolvens. (2) The only N-containi...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(76)90067-0
更新日期：1976-10-01 00:00:00
abstract：:The apparent Mn2+ binding constant for L-alpha-dipalmitoylphosphatidylcholine (DPPC) bilayers dispersed in monovalent salt and MnCl2 dispersions was determined as a function temperature using electron paramagnetic resonance (ERP). Reproducibility in the data sets requires the use of a standard salt solution and dual c...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(88)90023-0
更新日期：1988-03-01 00:00:00
abstract：:A fluorescent assay for Clostridium perfringens phospholipase C is described using 1-palmitoyl-2-[6(pyren-1-yl)hexanoyl]-sn-glycero-3- phospho-N-(trinitrophenyl)aminoethanol (PPHTE) as the substrate. This method is based on the decrease of the quenching of pyrene monomer fluorescence when phospholipase C hydrolyzes PP...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(91)90064-i
更新日期：1991-08-01 00:00:00
abstract：:The effect of Lp(a) on lipid metabolism in cells cultured from unaffected human aortic intima has been investigated. Lp(a) isolated from the blood of healthy subjects failed to alter intracellular neutral lipid content. On the other hand, Lp(a) obtained from coronary atherosclerosis patients induced a 1.5- to 2-5-fold...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(94)90135-x
更新日期：1994-01-01 00:00:00
abstract：:Human erythrocyte band 3 reconstituted into phospholipid vesicles has been used for studying the interaction of interdigitated lipid bilayer with an integral membrane protein. The interdigitated gel phase in DPPG/band 3 or DPPG/DMPC/band 3 systems was induced with polymyxin B (PMB) or Tris+. The phase transitions of t...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(94)90005-1
更新日期：1994-03-01 00:00:00
abstract：:The reasons for lipid diversity in membranes are not understood. Here we review evidence supporting the proposal that factors related to the polymorphic capabilities of lipids provide a rationale for lipid diversity. In particular, the ability of lipids to adopt different polymorphic phases appears to be related to a ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(86)90067-8
更新日期：1986-06-01 00:00:00
abstract：:The quantitation of Lp(a) by immunoassay presents a major technical problem, because the molecular mass of the (a) protein of Lp(a) can vary between 419,000 and 838,000 Da (Gaubatz et al. (1990) J. Lipid Res. 31, 603-612), and this variability is determined by at least 24 alleles of the (a) gene. In an attempt to over...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(94)90144-9
更新日期：1994-01-01 00:00:00
abstract：:Cholesteryl-phosphoryl-choline (CPC), a hybrid between cholesterol and lecithin, is incorporated into sonicated liposomes and erythrocyte membranes similarly to cholesterol. The effect of CPC on lipid microviscosity and degree of order is smaller, but not significantly than that of cholesterol. It is proposed that CPC...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(79)90094-x
更新日期：1979-04-01 00:00:00
abstract：:Irreversible electroporation (IRE) is a new technique in which a series of short pulses with high frequency electrical energy is applied on the targeted regions of cells or vesicles for their destruction or rupture formation. IRE induces lateral tension in the membranes of vesicles. We have investigated the electrosta...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104935
更新日期：2020-09-01 00:00:00
abstract：:Lipoic acid-substituted phospholipids were synthesized from phosphatidyl cholines by exchanging the choline residue with a glycol group using phospholipase D, forming phosphatidylglycols, and coupling of lipoic acid (1,2-dithiolane-3-pentanoic acid) to the residual glycol hydroxyl group by esterification. The thermotr...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(93)90032-x
更新日期：1993-11-01 00:00:00
abstract：:Perturbations induced by ethylazinphos on the physical organization of dipalmitoylphosphatidylcholine (DPPC) and DPPC/cholesterol membranes were studied by differential scanning calorimetry (DSC) and fluorescence polarization of 2-, 6-, 12-(9-anthroyloxy) stearic acids and 16-(9-anthroyloxy) palmitic acid. Ethylazinph...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(98)00105-4
更新日期：1999-02-01 00:00:00
abstract：:In X-ray diffraction studies of hydrated (greater than 60%) cholesterol/dioleoylphosphatidylcholine mixtures the lipid packing band showed an abrupt transition from liquid crystal-type to gel-type position and definition at a temperature which decreased progressively to almost -50 degrees C as the proportion of choles...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(88)90115-6
更新日期：1988-01-01 00:00:00
abstract：:The aim of this study was to develop, optimize and evaluate the potential of solid lipid nanoparticles (SLNs) as a topical delivery system for targeted and prolonged release of Fluocinolone acetonide (FA). FA loaded SLNs were successfully developed by an emulsification-ultrasonication method and optimized using 17-run...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2014.11.004
更新日期：2015-02-01 00:00:00
abstract：:A study of the vibrational behavior of five saturated monoacid triacylglycerides is performed by Raman spectroscopy at room temperature in the 3100-500 cm(-1) spectral range. The splitting of the CO stretching mode leads to conclude on the existence of two or three geometries of CO in the "knot" group OCO. The CO stre...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2004.12.009
更新日期：2005-04-01 00:00:00
