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 increase in intracellular levels of free and esterified cholesterol and triglycerides. The sialic acid content of patients' Lp(a) was 2.5-fold lower as compared with that of healthy subjects' Lp(a). Healthy donors' Lp(a) in vitro desialylated with neuraminidase were able to accumulate lipids within the cells. Using lectin-chromatography on Ricinus Communis agglutinin-agarose, Lp(a) was divided into subfractions differing by sialic acid content. Desialylated (sialic acid-poor) Lp(a), but not sialylated lipoproteins, were capable of increasing the intracellular content of total cholesterol. Desialylated but not sialylated Lp(a) formed aggregates during incubation under cell culture conditions. Isolated aggregates of desialylated Lp(a) induced lipid accumulation in cells. Elimination of Lp(a) aggregates from cultural medium prevented the increase of intracellular lipids. Complexes of Lp(a) with the matrix components and antibodies increased lipid level in cultured cells. We assume that formation of large particles of desialylated Lp(a) aggregates or Lp(a)-containing complexes is a necessary step for lipid accumulation in human intimal cells.
journal_name
Chem Phys Lipidsjournal_title
Chemistry and physics of lipidsauthors
Tertov VV,Orekhov ANdoi
10.1016/0009-3084(94)90135-xsubject
Has Abstractpub_date
1994-01-01 00:00:00pages
161-6eissn
0009-3084issn
1873-2941pii
0009-3084(94)90135-Xjournal_volume
67-68pub_type
杂志文章abstract：:Temperature and pH effects were studied for stability, structural organization, fluidity and permeability of vesicles from a polar lipid methanol fraction isolated from the Aeropyrum pernix. We determined the permeability of C(25,25) liposomes using fluorescence intensity of released calcein. At pH 7.0 and 9.0, and fr...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2011.01.005
更新日期：2011-03-01 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：:A fluorescence spectroscopy global data analysis environment is described. Within this analysis environment, multidimensional fluorescence decay data (time and frequency domains) can be analyzed in terms of a wide variety of photophysical models. A generalized compartmental analysis structure is utilized, where one ca...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(89)90052-2
更新日期：1989-06-01 00:00:00
abstract：:Ceramide-1-phosphate (C1P) is an important signaling sphingolipid and a metabolite of ceramide. C1P contains an anionic phosphomonoester head group and has been shown to regulate physiological and pathophysiological processes such as cell proliferation, inflammation, apoptosis, phagocytosis, and macrophage chemotaxis....
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2016.06.004
更新日期：2016-10-01 00:00:00
abstract：:The interaction of protoporphyrin IX (3,7,12,15-tetramethyl-8, 13-divinyl-2,18-porphyrine-dipropionic acid) (PPIX) with unilamellar dimyristoyl-L-alpha-phosphatidylcholine (DMPC) phospholipid vesicles has been studied by means of steady-state fluorescence quenching spectroscopy. The method of fluorescence-quenching-re...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(96)02605-9
更新日期：1996-09-30 00:00:00
abstract：:Low-temperature molecular mobility and packing in biological tissues are important for their survival upon cryopreservation. Electron paramagnetic resonance (EPR) in its pulsed version of electron spin echo (ESE) allows studying stochastic librations of spin-labeled molecules, the type of motion which dominates at low...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2019.104817
更新日期：2020-01-01 00:00:00
abstract：:A brief review is given on the principles and methods used to investigate structural phase transitions in phospholipid supramolecular structures. The conceptual differences of approaches close to and far from equilibrium are addressed, and the consequences in terms of the limits of interpretation for different types o...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/0009-3084(91)90072-j
更新日期：1991-03-01 00:00:00
abstract：:Infarcted porcine heart tissue and surrounding tissue were investigated for the content of plasmalogens and oxidatively derived corresponding alpha-hydroxyaldehydes as well as for products of lipid peroxidation, e.g. malondialdehyde, glyoxal, 2-hydroxyheptanal and oxygenated fatty acids. Oxidation products of unsatura...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(96)02557-1
更新日期：1996-07-30 00:00:00
abstract：:We investigated the effect of pegylation on the physical stability, morphology and membrane integrity of arsonoliposomes. Arsonoliposomes composed of distearoylglycerophosphocholine (DSPC), cholesterol (Chol) and the palmitoyl side chain arsonolipid (with concentrations ranging from 0 mol% [DSPC/Chol vesicles] to 53 m...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2005.11.003
更新日期：2006-02-01 00:00:00
abstract：:Mammalian cells produce both N-arachidonoylethanolamine (20:4n-6 NAE, anandamide) and 2-arachidonoylglycerol (2-AG), lipid signaling molecules that activate cannabinoid receptors. Because both agonists occur in the presence of receptor-inactive congeners, we have developed a sensitive method for the simultaneous assay...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(99)00124-3
更新日期：2000-02-01 00:00:00
abstract：:The interactions of liposomes with cells have been extensively studied to determine their potential use as vehicles for the delivery of drugs in vivo. Since intravenously administered liposomes are, for the most part, cleared by cells of the reticuloendothelial system (RES), considerable effort has been made to take a...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(86)90080-0
更新日期：1986-06-01 00:00:00
abstract：:2',7'-Dichlorodihydrofluorescein diacetate (DCFH-DA) is commonly used to detect the generation of reactive oxygen intermediates and for assessing the overall oxidative stress in toxicological phenomenon. It has been suggested that DCFH-DA crosses the cell membrane, subsequently undergoing deacetylation by intracellula...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2004.04.006
更新日期：2004-08-01 00:00:00
abstract：:Various optically active hydroxy derivatives of polyunsaturated fatty acids were easily oxidised to their corresponding keto derivatives using Dess-Martin periodinane. The reaction was run on the millimolar scale with good yields and without appreciable isomerisation of the surrounding double bonds. Reduction of these...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(03)00087-2
更新日期：2003-10-01 00:00:00
abstract：:The effect of lauric acid and low-HLB sucrose esters (L-195, S170) on the isothermal crystallization of coconut oil was investigated by differential scanning calorimetry. The fundamental crystallization parameters, such as induction time of nucleation and crystallization rate, were obtained by using the Gompertz equat...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2010.03.005
更新日期：2010-05-01 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：:We constructed a chronic oxidative stress model in which Se-deficient diet was fed to male Wister rats for 8 weeks. As expected, effects of oxidative damage, including Fe accumulation and increase in peroxidized lipids, were identified in the liver owing to the lack of glutathione peroxidase. Although the oxidative st...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2007.04.005
更新日期：2007-08-01 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：:Racemic 1-O-(2-methyloctadecyl)-2-O-acetyl-glycero-3-phosphocholine, a branched chain PAF species, was prepared by chemical synthesis and investigated for biological activity on human blood platelets in vitro. The synthesis started from 2-O-benzylglycerol and 2-methyloctadecyl-1-methyl sulfonate and was accomplished i...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(91)90017-6
更新日期：1991-11-01 00:00:00
abstract：:Metabolic labeling, in which substrate analogs containing diminutive tags can infiltrate biosynthetic pathways and generate labeled products in cells, has led to dramatic advancements in the means by which complex biomolecules can be detected and biological processes can be elucidated. Within this realm, metabolic lab...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104971
更新日期：2020-10-01 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：: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：:The MARTINI coarse-grained model is used to gain insight into the association of WALP23 helices in three different lipid membranes: DMPC, DPPC and DOPC. Potentials of mean force describing the association of two WALP23 helices embedded in different lipid bilayers indicate no barrier of association and a stabilization ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2013.02.001
更新日期：2013-04-01 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
abstract：:(Z)-tetracos-5-enoic acid and racemic cis-4-(2-octadecylcyclopropane-1-yl)-butanoic acid have been prepared from 1-eicosene by a new facile route. Periodic acid cleavage of the epoxide of 1-eicosene gave nonadecanal which was condensed with 4-carboxybutyltriphenylphosphonium bromide to give predominately (Z)-tetracos-...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(03)00092-6
更新日期：2003-11-01 00:00:00
abstract：:Nitration of unsaturated fatty acids is a (patho)physiologically important pathway of lipid modification induced by nitric oxide-derived species. We report herein on the unexpected chain rearrangement undergone by (13S,9Z,11E)-13-hydroxyoctadeca-9,11-dienoic acid (1), a linoleic acid metabolite, when exposed to nitrat...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2007.09.007
更新日期：2008-01-01 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：PURPOSE:The present research work involves Quality by Design (QbD)-based fabrication of lipid nanoconstructs (LNC) of paliperidone (PPD) bearing superior biopharmaceutical attributes. METHODS:LNC of paliperidone was prepared by melt emulsification-probe sonication and high-pressure homogenization method followed by op...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.105005
更新日期：2021-01-01 00:00:00
abstract：:Cannabinoid research underwent a tremendous increase during the last 10 years. This progress was made possible by the discovery of cannabinoid receptors and the endogenous ligands for these receptors. Cannabinoid research is developing in two major directions: neurobehavioral properties of cannabinoids and the impact ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/s0009-3084(00)00195-x
更新日期：2000-11-01 00:00:00
abstract：:Fourier transform infrared (FTIR) and time-resolved fluorescence spectroscopy have been employed to examine the structural dynamics of lipid fatty acyl chains and lipid/water interfacial region of a binary lipid mixture containing unsaturated phosphatidylethanolamine (PE) and diacylglycerol (DG). Infrared vibrational ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(90)90097-b
更新日期：1990-12-01 00:00:00
abstract：:The present study is aimed to characterize the electrostatic parameters of oil in water emulsion droplets composed of MCT (medium chain triglycerides), PL (phospholipids) and Poloxamer and containing increasing concentrations of the cationic lipid oleylamine (OA), in Hepes 20 mM pH 7.4. The initial zeta-potential data...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2004.04.003
更新日期：2004-08-01 00:00:00
