Abstract：
:The quantitative isolation of total glycosphingolipids from crude lipid extracts without contamination from other lipid classes is described. The method consists of (a) acetylation of total lipids with pyridine and acetic anhydride, (b) separation of acetylated glycolipids from nonglycolipids on a magnesia-silica gel (Florisil) column, and (c) deacetylation of glycolipid in chloroform-methanol-sodium methoxide. This method is useful for determination of microgram quantities of glycolipids derived from less than 1 ml of packed cells.
journal_name
J Lipid Resjournal_title
Journal of lipid researchauthors
Saito T,Hakomori SIsubject
Has Abstractpub_date
1971-03-01 00:00:00pages
257-9issue
2eissn
0022-2275issn
1539-7262journal_volume
12pub_type
杂志文章abstract：:The ternary phase diagram of cholesteryl myristate--dimyristoyl lecithin--water has been determined by polarizing light microscopy, scanning calorimetry, and x-ray diffraction. Hydrated dimyristoyl lecithin forms a lamellar liquid--crystalline phase (L alpha) at temperatures greater than 23 degrees C into which limite...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1979-02-01 00:00:00
abstract：:Rat serum lipoproteins were separated into at least four fractions by agarose-starch gel electrophoresis. The system used was discontinuous in that glycine and sodium barbitone buffer was used in the reservoirs and Tris buffer was used for the gels. The four major bands could be related to the pattern obtained by ultr...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1971-05-01 00:00:00
abstract：:Isolated etioplasts from 8-day-old dark-grown pea seedlings incorporated [1-(14)C]acetate into lipid at a relatively low rate. Plastids from seedlings that had been illuminated for at least 2 hr showed an enhanced incorporation provided the plastids were illuminated during incubation with the labeled acetate. Dark inc...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1973-11-01 00:00:00
abstract：:The immunoreactivities of LDL (low density lipoprotein) samples obtained from a variety of subjects were analyzed by comparing their capacities to compete with 125I-labeled LDL for binding to various monoclonal anti-LDL antibodies in competitive binding assays. A marked variation in epitope expression was observed. In...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1983-11-01 00:00:00
abstract：:Human endothelial lipase (EL), a member of the triglyceride lipase gene family, has five potential N-linked glycosylation sites, two of which are conserved in both lipoprotein lipase and hepatic lipase. Reduction in molecular mass of EL after treatment with glycosidases and after treatment of EL-expressing cells with ...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.M400162-JLR200
更新日期：2004-11-01 00:00:00
abstract：:Lipoproteins internalized by the LDL receptor (LDLR) are released from this receptor in endosomes through a process that involves acid-dependent conformational changes in the receptor ectodomain. How acidic pH promotes this release process is not well understood. Here, we assessed roles for six histidine residues for ...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.M070938
更新日期：2017-02-01 00:00:00
abstract：:Chylomicron remnants have been suggested to be involved in the development of atherosclerosis. To investigate the mechanisms of chylomicron remnant-induced atherosclerosis, we prepared cholesterol (Chol)-containing emulsion particles as models for chylomicron remnants. Chol markedly increased the apolipoprotein E (apo...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.M500167-JLR200
更新日期：2005-10-01 00:00:00
abstract：:The relationship between overnight postabsorptive (fasting) respiratory exchange ratio (RER) and plasma FFA concentrations was addressed using data from three separate protocols, each of which involved careful control of the antecedent diet. Protocol 1 examined the relationship between fasting RER and the previous day...
journal_title：Journal of lipid research
pub_type： 临床试验,杂志文章
doi：10.1194/jlr.M900021-JLR200
更新日期：2009-09-01 00:00:00
abstract：:Three mammalian cell lines were examined for their ability to metabolize the regulatory oxysterol, 25-hydroxycholesterol, and derepress 3-hydroxy-3-methylglutaryl CoA reductase. In mouse L cell fibroblasts reductase activity was restored with the concomitant metabolism of 25-hydroxycholesterol via side-chain hydroxyla...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1989-06-01 00:00:00
abstract：:The lipin protein family, consisting of three members, was first identified early this century. In the last few years, the lipin proteins have been shown to have important roles in glycerolipid biosynthesis and gene regulation, and mutations in the corresponding genes cause lipodystrophy, myoglobinuria, and inflammato...
journal_title：Journal of lipid research
pub_type： 杂志文章,评审
doi：10.1194/jlr.R800052-JLR200
更新日期：2009-04-01 00:00:00
abstract：:Glycosyl hydrolases (GHs) are carbohydrate-active enzymes that hydrolyze a specific β-glycosidic bond in glycoconjugate substrates; β-glucosidases degrade glucosylceramide, a ubiquitous glycosphingolipid. GHs are grouped into structurally similar families that themselves can be grouped into clans. GH1, GH5, and GH30 g...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.R086629
更新日期：2018-12-01 00:00:00
abstract：:Previously, our laboratory demonstrated that ceramide-1-phosphate (C1P) specifically activated group IVA cytosolic phospholipase A(2) (cPLA(2)alpha) in vitro. In this study, we investigated the chain length specificity of this interaction. C1P with an acyl-chain of >or=6 carbons efficiently activated cPLA(2)alpha in v...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.M800367-JLR200
更新日期：2009-10-01 00:00:00
abstract：:In promoting oxidation of 0.02 m potassium linoleate in a buffered (pH 7.0) aqueous dispersion at 37 degrees C, ascorbic acid at low concentrations (1.8 x 10(-6) and 1.8 x 10(-5) m) in combination with copper (1.3 x 10(-7) to 1.3 x 10(-3) m) had greater catalytic activity than the additive activity of the two catalyst...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1969-09-01 00:00:00
abstract：:We have studied the recognition and uptake of acid lipase by human fibroblasts in order to determine requirements for localization and function of the enzyme in lysosomes. Our approach was based on evidence that a number of acid hydrolases involved in mucopolysaccharide metabolism are secreted from cultured fibroblast...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1982-01-01 00:00:00
abstract：:The origin of arachidonic acid (AA) found in the epidermis is not known. Two possibilities exist: either de novo synthesis within the epidermal keratinocyte, or transport of AA formed at distant tissue sites. The current study examined the ability of cultured murine and human keratinocytes to metabolize exogenously ad...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1987-11-01 00:00:00
abstract：:Lipid-containing deposits within the swim bladders of Coryphaenoides acrolepis and Antimora rostrata were investigated. Lipid analysis of this material, which was quite uniform from the two species, yielded the following data: neutral lipids, 36.0-41.7%; phospholipids, 53.6-56.7%; and glycolipids, 4.3-8.9%. Cholestero...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1971-05-01 00:00:00
abstract：:Rats were fed a low protein diet deficient in and supplemented with lysine and threonine. Liver lipids contained more lecithin, sphingomyelin, and free fatty acids, and less amino phospholipids in the deficient rats. No variations in fatty acid composition of choline- and ethanolamine-containing phospholipids were fou...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1966-07-01 00:00:00
abstract：:A new sample preparation method coupled to GC-MS analysis was developed and validated for quantification of sulfate esters of pregnenolone (PREG-S) and dehydroepiandrosterone (DHEA-S) in rat brain. Using a solid-phase extraction recycling protocol, the results show that little or no PREG-S and DHEA-S (<1 pmol/g) is pr...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.M400244-JLR200
更新日期：2004-12-01 00:00:00
abstract：:Since the discovery of proprotein convertase subtilisin/kexin type 9 (PCSK9) as an attractive target in the treatment of hypercholesterolemia, multiple anti-PCSK9 therapeutic modalities have been pursued in drug development. The objective of this research is to set the stage for the quantitative benchmarking of two an...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.M092486
更新日期：2019-09-01 00:00:00
abstract：:The origin of the cholesterol needed by the cornea for growth and cell turnover was addressed by comparing absolute rates of sterol synthesis with rates of sterol accumulation during early development of the rabbit. Linearity of incorporation of 3H2O and [14C]mevalonate into digitonin-precipitable sterols with time of...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1989-07-01 00:00:00
abstract：:In human serum, polymorphism of apoA-II predominantly in HDL3 could be demonstrated. HDL3-apoA-II was composed of four isoproteins, each with a molecular weight of 8600 (reduced form) and identical immunological properties. The isoproteins are designated apoA-II-1 (pI 5.16), apoA-II-2 (pI 4.89) corresponding to the al...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1983-08-01 00:00:00
abstract：:Xanthophyllomyces dendrorhous is a basidiomycete yeast known as a natural producer of astaxanthin, a carotenoid of commercial interest because of its antioxidant properties. Recent studies indicated that X. dendrorhous has a functional SREBP pathway involved in the regulation of isoprenoid compound biosynthesis, which...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.RA119000431
更新日期：2020-02-01 00:00:00
abstract：:In specialized cell types, lysosome-related organelles support regulated secretory pathways, whereas in nonspecialized cells, lysosomes can undergo fusion with the plasma membrane in response to a transient rise in cytosolic calcium. Recent evidence also indicates that lysosome secretion can be controlled transcriptio...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.M089979
更新日期：2019-04-01 00:00:00
abstract：:Lecithin:cholesterol acyltransferase (LCAT) deficiency syndromes represent a group of rare genetic disorders of HDL metabolism that have been the subject of a large number of clinical, biochemical, and genetic studies. Of special interest are patients with LCAT-related disorders with severe HDL deficiency and the appa...
journal_title：Journal of lipid research
pub_type： 杂志文章,评审
doi：
更新日期：1997-02-01 00:00:00
abstract：:Nucleoredoxin (NRX) is a member of the thioredoxin family of proteins that controls redox homeostasis in cell. Redox homeostasis is a well-known regulator of cell differentiation into various tissue types. We found that NRX expression levels were higher in white adipose tissue of obese ob/ob mice and increased in the ...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.M054056
更新日期：2015-02-01 00:00:00
abstract：:The use of lipoproteins has been suggested as a treatment for Gram-negative sepsis because they inhibit lipopolysaccharide (LPS)-mediated cytokine production. However, little is known about the neutralizing effects of lipoproteins on cytokine production by meningococcal LPS or whole Gram-negative bacteria. We assessed...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.M300453-JLR200
更新日期：2004-04-01 00:00:00
abstract：:Tetradecylthioacetic acid (TTA), which cannot be beta-oxidized, exerts growth-limiting properties in glioma cells. In order to investigate the importance of modulated lipid metabolism and alterations in mitochondrial properties in this cell death process, we incubated glioma cells both with TTA and the oxidizable fatt...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：10.1194/jlr.m200312-jlr200
更新日期：2003-01-01 00:00:00
abstract：:Human apolipoprotein (apo) E occurs as three common isoforms (apoE4, E3, and E2), all of which influence plasma cholesterol levels. Although both apoE4 and E3 bind with equal effectiveness to the low density lipoprotein receptor, they associate preferentially with different classes of plasma lipoproteins: apoE4 with v...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1990-08-01 00:00:00
abstract：:The simultaneous exchange of (3h)tocopherol and (14C)cholesterol between rat plasma, rat plasma lipoproteins, and RBC was studied in vitro to compare quantitavely (a) the fractional exchange rates and (b) the half-times for isotope equilibration. In all incubations of RBC with plasma or with plasma lipoprotein fractio...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1975-01-01 00:00:00
abstract：:Measurements of enzymatic activity have demonstrated that lipoprotein lipase (LPL), the principal enzyme responsible for hydrolysis of circulating triglyceride, is present in a number of tissues including brain, kidney, and adrenal gland. To determine the sites of synthesis of LPL in these tissues, in situ hybridizati...
journal_title：Journal of lipid research
pub_type： 杂志文章
doi：
更新日期：1989-10-01 00:00:00
