Abstract：
:A Raman spectroscopic study has been carried out on a number of cholesterols and cholesterol derivatives in the crystalline state, in order to obtaine some empirical correlations between the Raman spectra and structure of each cholesterol form. Although the Raman spectra of the various cholesterols are highly complex it was found that three regions of the spectrum yield considerable information about the crystalline chain packing in each form. They are: (1) the low frequency region below 300 cm-1, giving information on the inter-and intramolecular vibrations in the cholesteryl moiety; (2) the methylene rocking/deformation region between 1400 and 1500 cm-1 giving information on chain packing in the crystalline state, and (3) the C-H stretching region between 2700 and 3100 cm-1 which appears to indicate that there is a correlation between branching in the side chains of the cholesterols, polarity of the substituent groups in the various derivatives studied and relative chain order in the packing arrangements in the crystalline state. A study of two branched chain aerosol derivatives, bis(di2-octyl) sodium sulphosuccinate and its isomer bis(di-2-ethylhexyl) sodium sulphosuccinate, indicate that branched chain amphiphiles are good Raman spectroscopic models for the cholesterols, similar to previous Raman spectroscopic studies which have found straight chain amphiphiles to be good models for more complex phospholipids.
journal_name
Chem Phys Lipidsjournal_title
Chemistry and physics of lipidsauthors
Faiman Rdoi
10.1016/0009-3084(77)90029-9subject
Has Abstractpub_date
1977-01-01 00:00:00pages
84-104issue
1eissn
0009-3084issn
1873-2941pii
0009-3084(77)90029-9journal_volume
18pub_type
杂志文章abstract：:The activities of cytochrome P450-derived epoxide metabolites of omega-6 polyunsaturated fatty acids (PUFAs) in cellular homeostasis have generated considerable topical interest, but there is less information on the effects of omega-3 PUFA epoxides. Mass spectroscopic data on the epoxides of the omega-3 PUFA eicosapen...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2009.02.005
更新日期：2009-05-01 00:00:00
abstract：:The hydration behaviour of equimolar mixtures of phospholipids and nonionic surfactants with different chain length was investigated by gravimetric sorption, NMR spectroscopy and X-ray diffraction. At the most hydration degrees investigated, the incorporation of nonionic surfactants in a phospholipid bilayer leads to ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2009.12.005
更新日期：2010-03-01 00:00:00
abstract：:The melon, the echolocation organ of the striped dolphin (Stenella coeruleoalba), was investigated by morphological and high-resolution (13)C nuclear magnetic resonance (NMR) methods, in order to characterize structure and composition gradient at the histological and molecular level. Morphological analysis showed that...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2004.10.001
更新日期：2005-03-01 00:00:00
abstract：:We present the results of a comparative differential calorimetric and Fourier transform infrared spectroscopic study of the effect of cholesterol and five analogues on the thermotropic phase behaviour and organization of dipalmitoylphosphatidylcholine bilayer membranes. These sterols/steroids differ in both the nature...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2015.03.002
更新日期：2015-05-01 00:00:00
abstract：:Myeloperoxidase released from stimulated neutrophils is able to produce hypochlorous and hypobromous acids. The composition of the reaction products of the interaction of hypohalous acid with double bonds of phosphatidylcholines was analysed by matrix-assisted laser desorption/ionisation time-of-flight mass spectromet...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2003.12.005
更新日期：2004-04-01 00:00:00
abstract：:Non-coding RNAs (ncRNAs) like microRNAs (miRNAs) or small interference RNAs (siRNAs) with their power to selectively silence any gene of interest enable the targeting of so far 'undruggable' proteins and diseases. Such RNA molecules have gained much attention from biotech and pharmaceutical companies, which led to the...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/j.chemphyslip.2019.104837
更新日期：2020-01-01 00:00:00
abstract：:N-acyltaurines (NATs) are amides of fatty acids that can be structurally related to endocannabinoids. They show interesting physiological and pharmacological properties. We have synthesized a homologous series of NATs with saturated acyl chains (n = 9-18) and investigated their supramolecular structure and thermotropi...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104929
更新日期：2020-08-01 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：:To investigate the efficacy of reducing plasma lipoprotein(a) (Lp(a)) as well as low density lipoprotein cholesterol (LDL-C) levels on the prevention of restenosis after PTCA, LDL-apheresis was attempted on a total of 54 patients at six institutions. LDL-apheresis using a dextran sulfate cellulose column has been prov...
journal_title：Chemistry and physics of lipids
pub_type： 临床试验,杂志文章,多中心研究
doi：10.1016/0009-3084(94)90162-7
更新日期：1994-01-01 00:00:00
abstract：:A binding protein is described for certain oxygenated derivatives of cholesterol which suppress 3-hydroxy-3-methylglutaryl coenzyme A reductase and cholesterol synthesis in cultured mammalian cells. This protein is found in the cytosolic fraction of many cell types and is distinct from cytosolic proteins which bind ch...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(85)90066-0
更新日期：1985-08-30 00:00:00
abstract：:Cardiolipins (CLs) are important biologically for their unique role in biomembranes that couple phosphorylation and electron transport like bacterial plasma membranes, chromatophores, chloroplasts and mitochondria. CLs are often tightly coupled to proteins involved in oxidative phosphorylation. The first step in under...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2013.12.010
更新日期：2014-02-01 00:00:00
abstract：:The work reported herein deals with the synthesis and the aggregation behavior studies of synthetic lipids bearing a non-ionic polar head made up of a tris(hydroxymethyl) aminomethane (tris) moiety linked with an aminoglycerol interface. The hydrophobic chains with variable lengths were grafted onto the hydroxyl funct...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2005.03.006
更新日期：2005-07-01 00:00:00
abstract：:The importance of phospholipases in cellular signaling and 1-alkylglycerophosphocholine acetyltransferase in the formation of platelet-activating factor (PAF) has stimulated demand for methods to measure these enzyme activities in inflammatory cells. Most of the assays currently used rely on radiolabeled substrates. W...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/0009-3084(95)02504-9
更新日期：1996-01-25 00:00:00
abstract：:In the last 30 years, ceramides have been found to mediate a myriad of biological processes. Ceramides have been recognized as bioactive molecules and their metabolizing enzymes are attractive targets in cancer therapy and other diseases. The molecular mechanism of action of cellular ceramides are still not fully esta...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/j.chemphyslip.2018.09.013
更新日期：2018-11-01 00:00:00
abstract：:Low density lipoprotein (LDL) particles exhibit extremely complex three-dimensional structural organization which is still not understood at the molecular level. The aim of this study was to provide the experimental evidence of a direct non-covalent interaction of the protein part with the lipid matrix. The approach w...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2006.02.014
更新日期：2006-06-01 00:00:00
abstract：:Even though lysophospholipids have attracted much interest in recent years on account of their unique bioactivity, research related to lysophospholipids is usually hampered by problems associated with standard sample preparation and discrimination of regioisomers. Herein, we demonstrate a quick tin-chemistry-based syn...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2016.09.003
更新日期：2016-10-01 00:00:00
abstract：:In the current study, we have focused on the design, development and in-vitro evaluation of d-α-tocopheryl polyethylene glycol 1000 succinate modified amphotericin B (AmB) and paromomycin (PM) loaded solid lipid nanoparticles (TPGS-SLNPs) by emulsion-solvent evaporation method. The optimized TPGS-SLNPs had a mean part...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104946
更新日期：2020-09-01 00:00:00
abstract：:The application of infrared spectroscopy to the physicochemical characterization of glycolipids as biologically important membrane constituents is described. In this contribution, the analysis of diacyl- and sphingosine-based (cerebroside, ganglioside) oligosaccharides and the class of lipid A-anchored lipooligo- and ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/s0009-3084(98)00078-4
更新日期：1998-11-01 00:00:00
abstract：:The extracorporeal procedure for the specific removal of lipoprotein (a) (Lp(a)) from human plasma--Lp(a) apheresis--was applied to the treatment of three patients with coronary artery disease documented by angiography. Their initial lipid levels were as follows: total cholesterol, 210-230 mg/dl; low-density lipoprote...
journal_title：Chemistry and physics of lipids
pub_type： 临床试验,杂志文章
doi：10.1016/0009-3084(94)90153-8
更新日期：1994-01-01 00:00:00
abstract：:A series of long-chain methyl esters with vicinal oxo groups (1,2-diones; 1,2-diketones) were synthesized by potassium permanganate-based oxidation of methyl esters of mono-unsaturated fatty acids. The presence of two additional carbonyl groups may facilitate the synthesis of other derivatives. The starting materials ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(02)00014-2
更新日期：2002-05-01 00:00:00
abstract：:Cholesterol has limited solubility in phospholipid bilayers. The solubility limit is strongly dependent on the nature of the lipid with which the cholesterol is mixed while properties of the crystals formed can be modified by phospholipid-cholesterol interactions. In this review we summarize the various methods that h...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/j.chemphyslip.2016.06.006
更新日期：2016-09-01 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：:The dicyclohexylborane-mediated addition of allene 1 to (E)-2-tridecenal affords a quaternary protected 2-amino-2-vinyl-1,3-diol in good yield as a single diastereomer. This compound is readily transformed into the four stereoisomers of the quaternary (E)-2-vinyl analogs of sphingosine. The metabolic fate and the effe...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2017.04.008
更新日期：2017-06-01 00:00:00
abstract：:Among the structurally diverse collection of lipids that comprise the membrane lipidome, polyunsaturated phospholipids are particularly vulnerable to oxidation. The role of α-tocopherol (vitamin E) is to protect this influential class of membrane phospholipid from oxidative damage. Whether lipid-lipid interactions pla...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/j.chemphyslip.2020.104910
更新日期：2020-09-01 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：:A prevalent model for the function of rhodopsin centers on the metarhodopsin I (MI) to metarhodopsin II (MII) conformational transition as the triggering event for the visual process. Flash photolysis techniques enable one to determine the [MII]/[MI] ratio for rhodopsin in various recombinant membranes, and thus inves...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/0009-3084(94)90180-5
更新日期：1994-09-06 00:00:00
abstract：:Applications of solid-state NMR spectroscopy for investigating the influences of lipid-cholesterol interactions on membrane fluctuations are reviewed in this paper. Emphasis is placed on understanding the energy landscapes and fluctuations at an emergent atomistic level. Solid-state (2)H NMR spectroscopy directly meas...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章,评审
doi：10.1016/j.chemphyslip.2016.05.001
更新日期：2016-09-01 00:00:00
abstract：:The addition of hydrophilic and hydrophobic molecules to the 1-monooleoyl glycerol (MO)/water (W) system has been investigated at a molecular level by 13C nuclear magnetic resonance (NMR) relaxation. Depending on the nature of the additive, the liquid crystalline phases of the MO/W binary system are modified. The 13C ...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(00)00201-2
更新日期：2001-03-01 00:00:00
abstract：:The recently discovered marine fatty acid (+/-)-2-methoxy-13-methyltetradecanoic acid was synthesized for the first time in six steps (26% overall yield) starting from commercially available methyl 12-methyltridecanoate. The synthetic approach provided enough material to corroborate the structure of the acid, which wa...
journal_title：Chemistry and physics of lipids
pub_type： 杂志文章
doi：10.1016/s0009-3084(03)00110-5
更新日期：2003-12-01 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
