Essentiality of fatty acids.

Abstract:

:All fatty acids have important functions, but the term "essential" is applied only to those polyunsaturated fatty acids (PUFA) that are necessary for good health and cannot be completely synthesized in the body. The need for arachidonic acid, which is utilized for eicosanoid synthesis and is a constituent of membrane phospholipids involved in signal transduction, is the main reason why the n-6 class of PUFA are essential. Physiological data indicate that n-3 PUFA also are essential. Although eicosapentaenoic acid also is a substrate for eicosanoid synthesis, docosahexaenoic acid (DHA) is more likely to be the essential n-3 constituent because it is necessary for optimal visual acuity and neural development. DHA is present in large amounts in the ethanolamine and serine phospholipids, suggesting that its function involves membrane structure. Because the metabolism of n-6 PUFA is geared primarily to produce arachidonic acid, only small amounts of 22-carbon n-6 PUFA are ordinarily formed. Thus, the essentiality of n-3 PUFA may be due to their ability to supply enough 22-carbon PUFA for optimal membrane function rather than to a unique biochemical property of DHA.

journal_name

Lipids

journal_title

Lipids

authors

Spector AA

doi

10.1007/BF02562220

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

S1-3

eissn

0024-4201

issn

1558-9307

journal_volume

34 Suppl

pub_type

杂志文章,评审

相关文献

LIPIDS文献大全
  • Inhibition of LCAT in plasma from man and experimental animals by chlorpromazine.

    abstract::Chlorpromazine (CPZ), a major tranquilizer, was found to be a potent inhibitor of lecithin:cholesterol acyltransferase (LCAT, EC 2.3.1.43) in the plasma of normal man, rat, rabbit and dog in vitro. The inhibitory effect of CPZ reached 35-50% at 0.5 mM depending on species; dog plasma LCAT appeared to be somewhat more ...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02535035

    authors: Bell FP,Hubert EV

    更新日期:1981-11-01 00:00:00

  • Effect of continuous enteral medium-chain fatty acid infusion on lipid metabolism in rats.

    abstract::This study compared (i) the relative effects of long-chain triglycerides (LCT) and medium-chain triglycerides (MCT), (ii) the influence of amount of MCT, and (iii) the impact of medium-chain fatty acid position, on plasma and lymphatic triglycerides and portal vein free fatty acids. The animals were fed approximately ...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-998-0204-z

    authors: You YQ,Ling PR,Qu Z,Bistrian BR

    更新日期:1998-03-01 00:00:00

  • Dietary supplementation with arachidonic and docosahexaenoic acids has no effect on pulmonary surfactant in artificially reared infant rats.

    abstract::Despite the potential use of long chain polyunsaturated fatty acid (LCPUFA) supplementation to promote growth and neural development of the infant, little is known about potential harmful effects of the supplementation. The present study determined whether supplementation with arachidonic acid (AA) and/or docosahexaen...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-999-0388-2

    authors: Yeh YY,Whitelock KA,Yeh SM,Lien EL

    更新日期:1999-05-01 00:00:00

  • Epoxidation reactions of unsaturated fatty esters with potassium peroxomonosulfate.

    abstract::Epoxidation of the double bond in methyl oleate, octadec-11E-en-9-ynoate, ricinoleate (12-hydroxy-octadec-9Z-enoate), iso-ricinoleate (9-hydroxy-octadec-12Z-enoate), and 12-oxo-octadec-9Z-enoate with potassium peroxomonosulfate (oxone, 2 KHSO5.KHSO4.K2SO4) in the presence of trifluoroacetone or methyl pyruvate gave th...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-998-0250-6

    authors: Lie Ken Jie MS,Pasha MK

    更新日期:1998-06-01 00:00:00

  • The questionable role of a microsomal delta8 acyl-coA-dependent desaturase in the biosynthesis of polyunsaturated fatty acids.

    abstract::Several experimental approaches were used to determine whether rat liver and testes express an acyl-CoA-dependent delta8 desaturase. When [1-14C]5,11,14-eicosatrienoic acid was injected via the tail vein, or directly into testes, it was incorporated into liver and testes phospholipids, but it was not metabolized to ot...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-000-0596-9

    authors: Chen Q,Yin FQ,Sprecher H

    更新日期:2000-08-01 00:00:00

  • The effect of hibernation on the positional distribution of ethanolamineglycerophospholipid fatty acids in hamster brain membranes.

    abstract::Microsomal and myelin membrane fractions were prepared from the brains of warm-adapted (room temperature) and hibernating Syrian Hamsters (Mesocricetus auratus). Ethanolamineglycerophospholipids were isolated and subjected to a fractionation scheme to separate the fatty acids of the plasmenylethanolamine and the phosp...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02533441

    authors: Blaker WD,Moscatelli EA

    更新日期:1979-12-01 00:00:00

  • Ionic liquids increase the catalytic efficiency of a lipase (Lip1) from an antarctic thermophilic bacterium.

    abstract::Lipases catalyze the hydrolysis and synthesis of triglycerides and their reactions are widely used in industry. The use of ionic liquids has been explored in order to improve their catalytic properties. However, the effect of these compounds on kinetic parameters of lipases has been poorly understood. A study of the k...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-014-3973-9

    authors: Muñoz PA,Correa-Llantén DN,Blamey JM

    更新日期:2015-01-01 00:00:00

  • Two distinct pathways for the formation of hydroxy FA from linoleic acid by lactic acid bacteria.

    abstract::Twenty-three of 86 strains of lactic acid bacteria transformed linoleic acid into hydroxy FA. Two distinct conversion pathways were in operation. Two strains of Lactobacillus acidophilus and a strain of Pediococcus pentosaceus produced 13(S)-hydroxy-9-octadecenoic acid 113(S)-OH 18:11 and 10,13dihydroxyoctadecanoic ac...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-003-1188-4

    authors: Kishimoto N,Yamamoto I,Toraishi K,Yoshioka S,Saito K,Masuda H,Fujita T

    更新日期:2003-12-01 00:00:00

  • Effects of dietary fats on fatty acid composition and delta 5 desaturase in normal and diabetic rats.

    abstract::We have studied the effect of various diets on the phospholipid fatty acid composition and in vitro delta 5 desaturase activity of hepatic microsomes derived either from the normal or streptozotocin-induced diabetic rat. The diets studied were the standard rat chow diet and a basal fat-free diet supplemented either wi...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02535763

    authors: Dang AQ,Kemp K,Faas FH,Carter WJ

    更新日期:1989-10-01 00:00:00

  • Dose-response impact of various tocotrienols on serum lipid parameters in 5-week-old female chickens.

    abstract::The cholesterol-suppressive action of the tocotrienol-rich-fraction (TRF) of palm oil may be due to the effect of its constituent tocotrienols on beta-hydroxy-beta-methylglutaryl coenzyme A (HMG-CoA) reductase activity. The tocotrienols, modulate HMG-CoA reductase activity via a post-transcriptional mechanism. As a co...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-006-5119-1

    authors: Yu SG,Thomas AM,Gapor A,Tan B,Qureshi N,Qureshi AA

    更新日期:2006-05-01 00:00:00

  • Synthesis and characterization of novel n-9 fatty acid conjugates possessing antineoplastic properties.

    abstract::The present study enumerates the synthesis, spectroscopic characterization, and evaluation of anticancer potential of esters of two n-9 fatty acids viz., oleic acid (OLA) and ricinoleic acid (RCA) with 2,4- or 2,6-diisopropylphenol. The synthesis strategy involved esterification of the hydroxyl group of diisopropylphe...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-012-3707-9

    authors: Khan AA,Husain A,Jabeen M,Mustafa J,Owais M

    更新日期:2012-10-01 00:00:00

  • The structure of the glycerides of ergot oils.

    abstract::The oils from sclerotia or from suitable mycelial cultures ofClaviceps purpurea (ergot) contain up to 44% of ricinoleic acid but no free hydroxyl groups. This is due to the presence of, besides normal triglycerides, tetra-acid, penta-acid and hexa-acid triglycerides. These contain respectively one, two and three ricin...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02531871

    authors: Morris LJ,Hall SW

    更新日期:1966-05-01 00:00:00

  • Quantitative measurement of prostaglandins E2 and E2 by selected ion monitoring.

    abstract::A method for the simultaneous quantitative analysis of prostaglandin E2 (PGE2) and PGE3 is described. The PG were analyzed by selected ion monitoring as the methyl ester-TMS ether derivatives of PGB2 and PGB3, respectively. The internal standard for the quantification of both species was [3,3,4,4-2H4]PGE2. A linear re...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02535360

    authors: Ferretti A,Flanagan VP,Roman JM

    更新日期:1982-11-01 00:00:00

  • PAM, OLA, and LNA are Differentially Taken Up and Trafficked Via Different Metabolic Pathways in Porcine Adipocytes.

    abstract::Dietary fatty acids have different effects on fat deposition in pigs. To clarify the underlying mechanisms of this difference, we compared the metabolism of palmitic (PAM, saturated), oleic (OLA, monounsaturated) and linoleic acid (LNA, polyunsaturated) in porcine adipocytes treated with 100 μM PAM, OLA or LNA. We obs...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-017-4302-x

    authors: Yu C,Xi L,Chen J,Jiang Q,Yi H,Wang Y,Wang X

    更新日期:2017-11-01 00:00:00

  • Fish oil normalizes plasma glucose levels and improves liver carbohydrate metabolism in rats fed a sucrose-rich diet.

    abstract::A sucrose-rich diet (SRD) induces insulin resistance and dyslipidemia with impaired hepatic glucose production and gluconeogenesis, accompanied by altered post-receptor insulin signaling steps. The aim of this study was to examine the effectiveness of fish oil (FO) to reverse or improve the impaired hepatic glucose me...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-011-3623-4

    authors: Hein GJ,Chicco A,Lombardo YB

    更新日期:2012-02-01 00:00:00

  • Phospholipid synthesizing enzymes of dermatophytes: II. Characterization of choline kinase.

    abstract::Choline kinase was located in the cytosolic fractions of the filamentous, pathogenic fungi,Microsporum gypseum andEpidermophyton floccosum. A broad pH optima (6.0-9.0) was observed for theM. gypseum enzyme, but theE. floccosum enzyme was active at pH 8.4 as well as 10.5, the activity being higher at pH 8.4. Enzyme fro...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02534540

    authors: Kasinathan C,Govindarajan U,Chopra A,Khuller GK

    更新日期:1983-10-01 00:00:00

  • Skin surface lipids of the dog.

    abstract::The skin surface lipid of the dog has been reported to contain a high proportion of diol diesters having a lower mobility on thin layer chromatography than diesters from other species in spite of containing similar fatty acid and diol components. In the present study, dog skin surface lipid was separated by preparativ...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02533265

    authors: Sharaf DM,Clark SJ,Downing DT

    更新日期:1977-10-01 00:00:00

  • Formation of cleavage products by autoxidation of lycopene.

    abstract::The cleavage products formed by autoxidation of lycopene were evaluated in order to elucidate possible oxidation products of lycopene in biological tissues. Lycopene solubilized at 50 microM in toluene, aqueous Tween 40, or liposomal suspension was oxidized by incubating at 37 degrees C for 72 h. Among a number of oxi...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-001-0706-8

    authors: Kim SJ,Nara E,Kobayashi H,Terao J,Nagao A

    更新日期:2001-02-01 00:00:00

  • Glycerol ester hydrolase activity in the pulp of unerupted calves' teeth.

    abstract::The pulp from unerupted calves' teeth was found to contain low levels of glycerol ester hydrolase activity. Solutions in Tris buffer cleared tributyrylglycerol agar and hydrolyzed emulsified olive oil. The average quantity of free fatty acids released in five assays with olive oil was: 2.8, S.D.+/-1.4. Specific activi...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02533302

    authors: McMahon KE,Pitas RE,Jensen RG

    更新日期:1977-02-01 00:00:00

  • The esterification of cholesterol in the yolk sac membrane of the chick embryo.

    abstract::The uptake of lipid from the yolk by the yolk sac membrane of the chick embryo is accompanied by the rapid esterification of a large proportion of the yolk cholesterol. This could arise from enhanced acyl-CoA:cholesterol acyltransferase (ACAT) activity and/or inhibition of cholesteryl ester hydrolase (CEH) activity. T...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02536056

    authors: Shand JH,West DW,McCartney RJ,Noble RC,Speake BK

    更新日期:1993-07-01 00:00:00

  • Cholesteryl esterase activities in ventricles, isolated heart cells and aorta of the rat.

    abstract::Cholesteryl esterase activities were determined in homogenates of rat heart (ventricles), isolated, calcium-tolerant, cardiac myocytes and aortic tissue and were compared with acid and neutral triglyceride lipase activities in these fractions. Using cholesteryl oleate/phosphatidylcholine/taurocholate emulsions and dig...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02534862

    authors: Stam H,Broekhoven-Schokker S,Schoonderwoerd K,Hülsmann WC

    更新日期:1987-02-01 00:00:00

  • Effect of low methionine, choline deficient diets upon major unsaturated phosphatidyl choline fractions of rat liver and plasma.

    abstract::To see how the metabolism of specific phosphatidyl choline fractions might be affected when only a limited source of methyl groups was available, rats were fed for 7 days a low methionine, choline-deficient diet or one supplemented with either choline or methionine. Prior to killing, they were injected with -14C-methy...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02534154

    authors: Lyman RL,Giotas C,Medwadowski B,Miljanich P

    更新日期:1975-03-01 00:00:00

  • An increased incidence of apolipoprotein E2/E2 and E4/E4 in retinitis pigmentosa.

    abstract::Previous studies from our laboratory have shown that retinitis pigmentosa (RP), a family of hereditary retinal degenerations, is often accompanied by abnormal levels of cholesterol or polyunsaturated fatty acids. The requirement of the retina for n-3 fatty acids is well known, and a defect in the supply of these lipid...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02537120

    authors: Huq L,McLachlan T,Hammer HM,Bedford D,Packard CJ,Shepherd J,Converse CA

    更新日期:1993-11-01 00:00:00

  • Serum phospholipid transfer protein activity after a high fat meal in patients with insulin-treated type 2 diabetes.

    abstract::Plasma phospholipid transfer protein (PLTP) mediates both net transfer and exchange of phospholipids between different lipoproteins. Animal studies have shown that it is closely related to the development of atherosclerosis. Although many studies have indicated that PLTP activity is increased in diabetes mellitus, the...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-010-3384-5

    authors: Schlitt A,Schwaab B,Fingscheidt K,Lackner KJ,Heine GH,Vogt A,Buerke M,Maegdefessel L,Raaz U,Werdan K,Jiang XC

    更新日期:2010-02-01 00:00:00

  • Human placental lipid metabolism. III. Synthesis and hydrolysis of phospholipids.

    abstract::Both diacyl GPC (glycerylphosphorylcholine) and diacyl GPE (glycerylphosphorylethanolamine) are synthesized in human placental tissue from their respective monoacyl precursors. The origin of the monacyl phosphatides is apparently not the result of placental phosphatide acyl-hydrolase activity. The most likely source i...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02531854

    authors: Robertson A,Sprecher H

    更新日期:1967-09-01 00:00:00

  • Lipids of the Tail Gland, Body and Muzzle Fur of the Red Fox, Vulpes vulpes.

    abstract::The tail gland of the red fox (Vulpes vulpes) secretes lipids containing volatile terpenes used in social communication. We have analysed lipids extracted from fur of the tail gland, body (flanks) and muzzle of foxes. GC-MS showed a novel group of iso-valerate and tiglate monoesters of alkane-1,2-diols (C18:0-22:0). T...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-017-4270-1

    authors: McLean S,Davies NW,Nichols DS

    更新日期:2017-07-01 00:00:00

  • Review of progress in sterol oxidations: 1987-1995.

    abstract::Material dealing with the chemistry, biochemistry, and biological activities of oxysterols is reviewed for the period 1987-1995. Particular attention is paid to the presence of oxysterols in tissues and foods and to their physiological relevance. ...

    journal_title:Lipids

    pub_type: 杂志文章,评审

    doi:10.1007/BF02522641

    authors: Smith LL

    更新日期:1996-05-01 00:00:00

  • Distribution of glycosphingolipids of monkey small and large intestinal mucosa.

    abstract::The ganglioside and neutral glycosphingolipid composition of adult monkey small and large intestinal mucosa were characterized and compared. GM3, GM2 and GD1A were found to be the principal gangliosides in each of these tissues. Dihexosylceramide was the major neutral glycosphingolipid of both organs. The total conten...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/BF02534429

    authors: Dahiya R,Brown MD,Brasitus TA

    更新日期:1986-02-01 00:00:00

  • Polyunsaturated phosphatidylinositol and diacylglycerol substantially modify the fluidity and polymorphism of biomembranes: a solid-state deuterium NMR study.

    abstract::One of the main biological systems that can be used as a model for studying the molecular mechanisms involved in membrane fusion is the formation of the nuclear envelope (NE). NE assembly to form the male pronucleus at fertilization occurs by binding of NE membrane precursor vesicles to chromatin and their fusion. MV1...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-006-5045-2

    authors: Larijani B,Dufourc EJ

    更新日期:2006-10-01 00:00:00

  • Glyceroglycolipids Affect Uptake of Carotenoids Solubilized in Mixed Micelles by Human Intestinal Caco-2 Cells.

    abstract::We previously reported that phospholipids markedly affected the uptake of carotenoids solubilized in mixed micelles by human intestinal Caco-2 cells. In the present study, we found that two classes of dietary glyceroglycolipids and the corresponding lysoglyceroglycolipids affected uptake of β-carotene and lutein by di...

    journal_title:Lipids

    pub_type: 杂志文章

    doi:10.1007/s11745-015-4033-9

    authors: Kotake-Nara E,Yonekura L,Nagao A

    更新日期:2015-09-01 00:00:00