Image Lipid A.png thumb 250px Chemical structure of lipid A as found in E. Coli ref name Raetz2009 cite journal author Raetz, Christian R. H. Guan, Ziqiang Ingram, Brian O. Six, David A. Song, Feng Wang, Xiaoyuan Zhao, Jinshi title Discovery of new biosynthetic pathways the lipid A story journal Journal of Lipid Research year 2009 pages S103 S108 ref Lipid A is a lipid component of an endotoxin held responsible for toxicity of Gram negative bacteria . It is the innermost of the three regions of the lipopolysaccharide ... its toxic effects can be damaging, the sensing of lipid A by the human immune system may also be critical ... VK, Carlson RW, Stephens DS title Endotoxin of Neisseria meningitidis composed only of intact lipid ... activating abilities of LPS can be attributed to the lipid A unit. It is a very potent stimulant ... composition Lipid A consists of two glucosamine carbohydrate sugar units with attached acyl chains ... The optimal immune activating lipid A structure is believed to contain 6 acyl chains. Four acyl .... E. coli lipid A, as an example, typically has four C14 hydroxy acyl chains attached to the sugars ... for Lipid A in E. coli has been determined by the work of Christian R. H. Raetz in the past 32 years. ref name Raetz Lipid A structure and effects on eukaryotic cells have been determined and examined ... center thumb 700px Synthesis of the UDP diacylglucosamine precursor of Lipid A ref name King cite ... of Lipid IV sub a sub ref name King Inhibition and activation of immune response Lipid A with a reduced ... versions of lipid A can be used as components of vaccine s adjuvant s to improve their effect. Citation needed date March 2009 Mechanism of activating cells Lipid A and LPS has been demonstrated ... al., Nature 2009 . Consequently, lipid A Structural analog analogs like eritoran can act as TLR4 receptor ... Medicine ref See also Lipid A deacylase PagL References reflist External links MeshName Lipid A http www.lipidlibrary.co.uk Lipids lipidA index.htm The Lipid Library Summary of Lipid A and bacterial ... more details
membrane s, and as important lipid signaling signaling molecules . ref name pmid19098281 cite journal ... M and Dennis E.A title Update of the LIPID MAPS comprehensive classification system for lipids journal Journal of Lipid Research volume 50 pages S9 S14 year 2009 pmid 19098281 doi 10.1194 jlr.R800095 ... . ref name pmid19098281 Although the term lipid is sometimes used as a synonym for fat s, fats are a subgroup ... part of a lipid, are a diverse group of molecules synthesized by chain elongation of an acetyl ... Brown cite book editor Brown HA title Lipodomics and Bioactive Lipids Mass Spectrometry Based Lipid ... to sight. ref name The Lipid Chronicles cite web title A Long Lipid, a Long Name Docosahexaenoic Acid url http www.samuelfurse.com 2011 12 a long name a long lipid docosahexaenoic acid work The Lipid Chronicles accessdate 2011 12 31 ref Other major lipid classes in the fatty acid category are the fatty ... synthesis and their regulation journal Progress in Lipid Research volume 43 pages 134 76 ... journal Progress in Lipid Research volume 46 issue 5 pages 225 43 year 2007 pmid 17599463 doi 10.1016 ... s, are ubiquitous in nature and are key components of the lipid bilayer of cells, ref name ... 2011 11 the structure of a membrane work The Lipid Chronicles accessdate 2011 12 31 ref as well as being ... in lower animals journal Prog. Lipid Res volume 32 issue 1 pages 25 45 year 1993 pmid 8415797 doi ... E, Danikiewicz W title Polyisoprenoids structure, biosynthesis and function journal Progress in Lipid ... thumb right 300px Structure of the saccharolipid Kdo sub 2 sub Lipid A. ref name Raetz2006 ... of the lipid A Lipid A component of the lipopolysaccharide s in Gram negative bacteria . Typical ... is Kdo sub 2 sub Lipid A, a hexa acylated disaccharide of glucosamine that is glycosylated with two ..., Deems RA, Dennis EA title Kdo2 Lipid A of Escherichia coli , a defined endotoxin that activates macrophages via TLR 4 journal Journal of Lipid Research volume 47 pages 1097 111 year 2006 pmid 16479018 ... more details
Unreferenced date December 2009 Orphan date November 2006 A simple lipid is a saponifiable lipid with just two types of components. When more components exist, the saponifiable lipid is classified as a complex lipid. See also Lipid Simple Lipids Esters of fatty acids with various alcohols. a. Fats Esters of fatty acids with glycerol. Oils are fats in the liquid state. b. Waxes Esters of fatty acids with higher molecular weight monohydric alcohols. Biochem stub DEFAULTSORT Simple Lipid Category Lipids ... more details
Lipid metabolism refers to the processes that involve the intercourse and degradation of lipid s. The types of lipids involved include Bile salt s Cholesterol s Eicosanoid s Glycolipid s Ketone bodies Fatty acids see also fatty acid metabolism Phospholipid s Sphingolipid s Steroid see also steroidogenesis Triacylglycerol s fats see also lipolysis and lipogenesis External links MeshName Lipid metabolism Ophardt, Charles E. 2003 http www.elmhurst.edu chm vchembook 622overview.html Lipid Catabolism Summary . Virtual Chembook. Elmhurst College. King, Michael W. http themedicalbiochemistrypage.org lipid synthesis.html Fatty Acid, Omega 3 and Omega 6 Fatty Acid, Triglyceride, and Phospholipid Synthesis and Metabolism . The Medical Biochemistry Page. http www.theheart.org condition lipid metabolic.do Breaking news and clinical trials about Lipid and Metabolism Metabolism Lipid metabolism enzymes Eicosanoid metabolism enzymes Glycolipid sphingolipid metabolism enzymes Ketone and cholesterol metabolism enzymes Category Lipids Category Metabolism biochemistry stub sr Lipidni metabolizam ... more details
Context date May 2009 Lipid microdomains are formed when lipid s undergo lateral phase matter phase separations yielding stable coexisting lamellar Lipid bilayer domain s. These phase separation s can be induced by changes in temperature , pressure , ionic strength or by the addition of divalent cation s or protein s. The question of whether such lipid microdomains observed in model lipid systems also exist in biomembrane s had motivated considerable research efforts. Lipid domains are not readily isolated and examined as unique species, in contrast to the examples of lateral heterogeneity . One can disrupt the membrane and demonstrate a heterogeneous range of wikt composition composition in the population of the resulting Vesicle biology vesicles or fragment s. Electron microscopy can also be used to demonstrate lateral inhomogeneities in biomembranes. Often, lateral heterogeneity has been inferred from biophysical techniques where the obsereved signal indicates multiple populations rather ... coefficient of a fluorescent lipid analogue in soybean protoplast s. Membrane microheterogeneity is sometimes ... with the average lipid physical state exhibited by the bulk of the membrane. Often, the methods suggest regions with different lipid fluidity , as would be expected of coexisting gel and liquid ... and gel like domains. See also Commons category Lipids Biochemistry Essential fatty acid Lipid ... B. Gennis, p. 164, Springer Verlag, New York, 1989. Shape instabilities in charged lipid domains.Journal ... Carboxyl Terminal Domains on Lipid Raft Localization of the Murine Gonadotropin Releasing Hormone Receptor. Biology of Reproduction 74 5 788 797. 2006. Investigation of the lipid domains and apolipoprotein ... cgi content abstract 94 8 3104 Lipid microdomain formation. http www.jimmunol.org cgi reprint 168 6 2737.pdf Lipid microdomain clustering. http medcat.wustl.edu catflat BME B720468.html Lipid microdomain signaling. DEFAULTSORT Lipid Microdomain Category Biochemistry ... more details
unreferenced date November 2011 Lipid profile or lipid test panel panel , is the collective term given to the estimation of, typically, cholesterol total cholesterol , high density lipoprotein high density lipoprotein cholesterol , low density lipoprotein low density lipoprotein cholesterol , and triglycerides . An extended lipid profile may include very low density lipoprotein . This is used to identify hyperlipidemia various disturbances of cholesterol and triglyceride levels , many forms of which are recognized risk factors for cardiovascular disease and sometimes pancreatitis . It is recommended that healthy adults with no other risk factors for heart disease be tested with a fasting lipid profile once every five years. citation needed date July 2011 Individuals may also be screened using only a cholesterol test and not a full lipid profile. However, if the cholesterol test result is high, there may be the need to have follow up testing with a lipid profile. citation needed date July 2011 If there are other risk factors or the individual has had a high cholesterol level in the past, regular testing is needed and the individual should have a full lipid profile. citation needed date July 2011 For children and adolescents at low risk, lipid testing is usually not ordered routinely. However, screening with a lipid profile is recommended for children and youths who are at an increased risk of developing heart disease as adults. Some of the risk factors are similar to those in adults and include a family history of heart disease or health problems such as diabetes, high blood pressure hypertension , or being overweight. High risk children should have their first lipid profile ... should also be measured. citation needed date July 2011 A lipid profile may also be ordered at regular intervals to evaluate the success of lipid lowering lifestyle changes such as diet and exercise ... References references External links http www.labtestsonline.org understanding analytes lipid glance.html ... more details
Image Lipid peroxidation.svg thumb 350px right Mechanism of lipid peroxidation. Lipid peroxidation refers to the redox oxidative degradation of lipid s. It is the process in which Radical chemistry free radicals steal electrons from the lipids in cell membranes , resulting in cell damage. This process proceeds by a free radical Chemical reaction chain reaction mechanism. It most often affects polyunsaturated fatty acids , because they contain multiple double bonds in between which lie methylene CH2 groups that possess especially reactive hydrogen s. As with any radical reaction, the reaction consists of three major steps initiation, propagation, and termination. Initiation Initiation is the step in which a fatty acid radical chemistry radical is produced. The most notable initiators in living cells are reactive oxygen species ROS , such as hydroxyl radical OH and HO2 , which combines with a hydrogen atom to make water and a fatty acid radical. Propagation The fatty acid radical is not a very stable molecule , so it reacts readily with molecular oxygen, thereby creating a peroxyl fatty ... fatty acid radical and a lipid peroxide, or a cyclic peroxide if it had reacted with itself ... doi abs 10.1111 j.1651 2227.1985.tb10987.x?journalCode apa Red Cell Membrane Lipid Peroxidation ... products of lipid peroxidation may be mutagenic and carcinogenic . ref name martnett For instance, the end ... to them, primarily M1G M sub 1 sub G . ref name martnett The toxicity of lipid hydroperoxides to animals .... These animals do not survive past embryonic day 8, indicating that the removal of lipid hydroperoxides ... of lipid peroxidation, to be specific, malondialdehyde MDA . ref name martnett http www.ncbi.nlm.nih.gov sites entrez?db pubmed&list uids 10064852&cmd Retrieve&indexed google Lipid peroxidation DNA damage ..., so this test is not completely specific for lipid peroxidation. ref name trevisan ... External links MeshName Lipid peroxidation DEFAULTSORT Lipid Peroxidation Category Fatty acids ... more details
Unreferenced date February 2008 A saponifiable lipid is one with an ester functional group, that can be hydrolysis hydrolyzed under basic conditions. These include triglyceride s, phospholipids , glycolipid s, sphingolipid s, and the wax es. These lipids are known as simple lipids . See also Lipids Category Lipids biochem stub ... more details
Prog. Lipid Res. volume 34 issue 4 pages 343 64 year 1995 pmid 8685243 doi 10.1016 0163 7827 95 00013 5 ref Accordingly, peroxisomal defects often lead to impairment of ether lipid production. Monoalkylglycerol ... by specific phospholipase s enzyme s might be involved in the generation of lipid second messenger ... cite journal author Spector A, Yorek M title Membrane lipid composition and cellular function url http www.jlr.org cgi reprint 26 9 1015 journal J Lipid Res volume 26 issue 9 pages 1015 35 date 1 September ... activating factor is an ether lipid signaling molecule that is involved in leukocyte function in the mammalian ... component a new class of lipid chemical mediators url http www.jbc.org cgi reprint 254 19 9355 journal ... 10.1042 BST0320147 ref Synthetic ether lipid analogs Synthetic ether lipid analogs have chemotherapy ... C . A toxic ether lipid analogue miltefosine has recently been introduced as an oral treatment ... with a particularly high ether lipid content in its membranes. ref cite journal author Lux H, Heise N, Klenner T, Hart D, Opperdoes F title Ether lipid alkyl phospholipid metabolism and the mechanism of action of ether lipid analogues in Leishmania journal Mol Biochem Parasitol volume 111 issue 1 ... more details
merge Lipid bilayer phase behavior date February 2012 Image Phospholipids aqueous solution structures.svg thumb Cross Section view of the structures that can be formed by phospholipids in aqueous solutions Polymorphism in biophysics is the aspect of the behaviour of lipid s that influences their long range order, i.e. how they aggregate. This can be in the form of spheres of lipid molecules micelle s , pairs of layers that face one another lamellar phase, observed in biological system as a lipid bilayer , a tubular arrangement hexagonal crystal system hexagonal , or various cubic crystal system cubic phases Fd3m, Im3m, Ia3m, Pn3m, and Pm3m being those discovered so far . More complicated aggregations have also been observed, rhombohedral , tetragonal and orthorhombic phases have been observed. It forms an important part of current academic research in the fields of membrane biophysics polymorphism , biochemistry biological impact and organic chemistry synthesis . Determination of the topology of a lipid system is possible by a number of methods, the most reliable of which is x ray diffraction . This uses a beam of x rays that are scattered by the sample, giving a diffraction pattern ..., temperature, hydration, pressure and ionic strength and type . Hexagonal phases in the lipid polymorphism In lipid polymorphism, if the packing ratio of lipids is greater or less than one, lipid ... form according to the environment the lipid is introduced. Hexagonal I phase H sub I sub This phase ... for biological membranes. Hexagonal II phase H sub II sub Lipid molecules in the HII phase ... possible that an outer monolayer of lipid coats the surface of the collection of tubes to protect ... tight packing of the lipid head groups reduces their contact with the aqueous phase. This, in turn ... on the lipid. These perturbations include pH changes, temperature changes, pressure changes, volume ... References J. M. Seddon, R. H. Templer. Polymorphism of Lipid Water Systems , from the Handbook of Biological ... more details
Infobox Disease Name Lipid pneumonia Image Caption DiseasesDB ICD10 ICD9 ICD9 516.8 ICDO OMIM MedlinePlus eMedicineSubj eMedicineTopic MeshID D011017 Lipid pneumonia or lipoid pneumonia is a specific form of lung inflammation pneumonia that develops when lipids enter the bronchial tree. The disorder is sometimes called Cholesterol pneumonia in cases where that lipid is a factor. ref cite journal author Pelz L, Hobusch D, Erfurth F, Richter K title Familial cholesterol pneumonia journal Helv Paediatr Acta year 1972 pages 371 9 volume 27 issue 4 pmid 4644274 ref Causes Sources of such lipids could be either exogenous or endogenous. ref name urlPulmonary Pathology cite web url http library.med.utah.edu WebPath LUNGHTML LUNG026.html title Pulmonary Pathology work accessdate 21 November 2008 ref Exogenous from outside the body. For example, inhaled nose drops with an oil base, or accidental inhalation of cosmetic oil. Amiodarone is an anti arrythmic known to cause this condition. Endogenous from the body itself, for example, when an airway is obstructed, it is often the case that distal to the obstruction, lipid laden macrophages Foam cell foamy macrophages and giant cells fill the lumen of the disconnected airspace. Appearance The gross appearance of a http www medlib.med.utah.edu WebPath LUNGHTML LUNG026.html lipid pneumonia is that in which there is an ill defined, pale yellow area on the lung. This yellow appearance explains the colloquial term golden pneumonia. At the microscopic scale foamy macrophages and giant cells are seen in the airways, and the inflammatory response is visible in the parenchyma. Treatment Treatment is with corticosteroids and possibly intravenous immunoglobulins . References reflist External links OMIM 215030 Respiratory pathology pneumonia Category Pneumonia use dmy dates date March 2012 ca Pneum nia lipo dal ... more details
see also Model lipid bilayer The lipid bilayer is a thin membrane made of two layers of lipid molecule ... membrane of almost all life living organisms and many virus es are made of a lipid bilayer, as are the membranes surrounding the cell nucleus and other sub cellular structures. The lipid bilayer ... from diffusing into areas where they should not be. Lipid bilayers are ideally suited to this role ... transporter ion pumps . Image Lipid bilayer section.gif right thumb 300px This fluid lipid bilayer ... effect . Because lipid bilayers are quite fragile and are so thin that they are invisible in a traditional ... by the immune system . Lipid tails can also affect membrane properties, for instance ... of certain integral membrane protein s. Integral membrane proteins function when incorporated into a lipid .... Structure and organization A lipid bilayer, also known as the phospholipid bilayer, is a sheet of lipid s two molecules thick, arranged so that the hydrophilic phosphate heads point out to the water ... interaction between the hydrophobic lipid tails and the surrounding water. Thus, a lipid bilayer ... in toward this water core, while the hydrophobic tails point out to the air. In the case of a lipid ... lipid bilayers and soap bubbles is their relative size. Soap bubbles are typically hundreds of nanometers ... interference effects cause rainbow colors on a bubble surface. A single lipid bilayer, on the other ... left thumb 310px Schematic cross sectional profile of a typical lipid bilayer. There are three distinct ... region with partial hydration Cross section analysis The lipid bilayer is very thin compared to its ... of a watermelon 1 ft 30 cm , the lipid bilayer making up the plasma membrane would be about ... , ref name Lewis1983 cite journal author Lewis BA, Engelman DM title Lipid bilayer thickness .... ref name Nagle2000 cite journal author Nagle JF, Tristram Nagle S title Structure of lipid bilayers ... and permeation profiles in lipid membranes journal Proc. Natl. Acad. Sci. U.S.A. volume 98 issue ... more details
Refimprove date February 2011 Image Lipid raft organisation scheme.svg thumb 450px Lipid raft organisation, region 1 is standard lipid bilayer, while region 2 is a lipid raft. The plasma membrane of cells ... in glycolipoprotein microdomains termed lipid rafts . ref Thomas S., Pais A.P., Casares S and Brumeanu T.D. 2004 . Analysis of lipid rafts in T cells. Molecular Immunology 41 399 409. http www.sciencedirect.com ... ref Thomas S., Kumar R.S. and Brumeanu.T.D 2004 . Role of lipid rafts in T cells. AITE 52 215 224. http ... cite pmid 18955730 ref Lipid rafts are more ordered and tightly packed than the surrounding bilayer , but float freely in the membrane bilayer. ref cite pmid 12208858 ref Properties of lipid rafts ... a and cholesterol b . One key difference between lipid rafts and the plasma membranes from which they are derived is lipid composition. Research has shown that lipid rafts generally contain ... 2011 Also, lipid rafts are enriched in sphingolipid s such as sphingomyelin , which is typically elevated ... levels are decreased which results in similar choline containing lipid levels between the rafts ... nature of the sterol group, cholesterol partitions preferentially into the lipid rafts where ..., Mahfoud R, Yahi N title Lipid rafts structure, function and role in HIV, Alzheimer s and prion diseases ... ref Rietveld & Simons related lipid rafts in model membranes to the immiscibility of ordered ... the two phases. Studies have shown there is a difference in thickness of the lipid rafts and the surrounding ... rafts into larger rafts, can also minimize line tension. ref name Pike By one early definition of lipid rafts, lipid rafts differ from the rest of the plasma membrane. In fact, researchers who date February 2011 have hypothesized that the lipid rafts can be extracted from a plasma membrane. The extraction would take advantage of lipid raft resistance to non ionic detergent s, such as Triton X 100 ... membrane will dissolve while the lipid rafts may remain intact and could be extracted. citation needed ... more details
Orphan date February 2009 Lipid therapy , fat therapy , or therapeutic lipovenous injections is a controversial medical technique that entails the injection and expulsion of fats and lipids, which proponents claim can improve cognitive and memory function. The technique recently gained notoriety, when it was revealed it had become a popular technique with French and Italian celebrities, and more recently a rumored handful of American celebrities. Description Patients who choose to undergo the controversial therapy are injected once a week for two months with a high density animal fat. Since most toxins in the body are fat soluble according to practitioners , this causes the patient to defecate a translucent slime, which is claimed to carry out the body s toxins, in turn boosting energy, increasing concentration, and improving memory. Many medical experts who oppose the technique have pointed out the slimy discharge how the body deals with any excess of intestinal and intravenous lipids, and it is a sign of high risk of artery damage and poor water absorption. Legal regulations sorting of any therapy as effective treatment for any condition is heavily restricted by law in many jurisdictions unless all such claims are scientifically validated. In the United States, for example, U.S. Food and Drug Administration regulations prohibit marketing any lipid therapy using medical claims, as such claims are unfounded. Additionally, clinicians and doctors who perform the therapy have drawn scrutiny from the Department of Agriculture for questionable documentation on their acquisition of the animal fat. Efficacy Double blind Blinding of patients and assessors to the therapy is difficult since lipid therapy can be easily discerned by the painful pressure in the thoracic cavity engendered by the sudden dip in plasma viscosity. Globules of lipid polymers also produce a significant shear ... of Lipids, Lipoproteins and Membranes . Elsevier, 2008. ISBN 0444532196 Yagi, Kunio. Lipid ... more details
The lipid hypothesis was one of two Hypothesis hypotheses the other being the chronic endothelial injury ... by the German pathologist Rudolf Virchow in 1856 and suggested that blood lipid accumulation ..., the lipid hypothesis received greater attention. An accumulation of evidence has led to the acceptance of the lipid hypothesis as scientific fact by the medical community ref name partv cite journal ... journal J. Lipid Res. volume 47 issue 7 pages 1339 51 year 2006 pmid 16585781 doi 10.1194 .... Lipid hypothesis of atherogenesis Early studies and origin In 1913, a study by Nikolai Anitschkow ..., Duff and McMillian formulated the lipid hypothesis in its modern form in a review which appeared ... century, the lipid hypothesis proposing that saturated fat s and cholesterol in the blood are a major ... validity. The interpretation of this research has resulted in the general acceptance of the lipid ... majority of researchers and practitioners were supportive of the validity of the lipid hypothesis ... trial ends it almost journal J Lipid Res date 2006 volume 47 pages 1 14 pmid 16227628 doi 10.1194 ..., the evidence accumulated through studies resulted in general acceptance of the lipid hypothesis ... volume 6 pages 36 37 pmid 9633288 issue 5 ref and by 2002, the lipid hypothesis was accepted by the scientific ... 1400040787 ref A minority of the medical community still argue that the lipid hypothesis has not yet ... downloads softsciencefat.pdf ref Nowadays, the term lipid hypothesis is commonly used by the opponents ... and 1980s, some researchers and practitioners considered the lipid hypothesis as unverified due ... for atherosclerosis. ref name Rifkind cite journal author Rifkind B, Levy R title Testing the lipid ... supporting it were flawed. ref name Oliver cite journal author Oliver M title Lipid lowering and ischaemic ... 6948505 ref ref name Stehbens88 cite journal author Stehbens W title Flaws in the lipid hypothesis ... 5 Pt 2 ref However, even after the Coronary Primary Prevention Trial ref cite journal title The Lipid ... more details
Image signaling lipids2.png right thumb 400px Common lipid signaling molecules BR lysophosphatidic acid ... ethanolamine AEA Lipid signaling, broadly defined, refers to any biological cell signaling signaling event involving a lipid messenger that binds a protein target, such as a receptor biochemistry receptor ... responses. Lipid signaling is thought to be qualitatively different from other classical signaling ... through Cell membrane membranes see osmosis . One consequence of this is that lipid messengers cannot ... on demand at their intended site of action. As such, many lipid signaling molecules cannot circulate ... . Sphingolipid second messengers Main second messenger system Main sphingolipid File Second lipid messengers ... group from the sphingosine backbone. Alternatively, this sphingosine derived lipid sphingolipid .... J. Lipid Res . 46 , 2706 2716 2005 . ref It is also possible to regenerate sphingomyelin from ceramide ... for ceramide activation of serine threonine protein phosphatases. J. Lipid Res. 45 , 496 506 2004 ... kinases and phosphatases , and by inositol lipid metabolic pathways. ref Fugmann, T. et al. Regulation ... of bioactive lipid signalling lessons from Sphingolipids. Nature . 9 , 139 150 2008 . ref Sphingosine ... viability. J. Biol. Chem. . 278 , 34541 34547 2003 . ref Sphingosine is a single chain lipid usually ..., N. 2007 Prokazova, N. et al. Lipid second messengers and cell signaling in vascular wall. Biochemistry .... Adv. Lipid Res. 26 , 183 211 1993 . ref ref Gouaze Andersson, V. & Cabot, M. C. Glycosphingolipids ... 1 IL 1 and a lipid soluble molecule that transports calcium ions Ca sup 2 sup across the bilayer ... blocks apoptosis through inhibition of acid sphingomyelinase in macrophages. J. Lipid Res. 45 .... 4 , 212 9 1992 . ref ref Nishizuka, Y. Protein kinase C and lipid signaling for sustained cellular ... lipids that activate cannabinoid receptors . The first such lipid to be isolated was anandamide ... Lipid signaling DEFAULTSORT Lipid Signaling Category Signal transduction ca Senyalitzaci lip dica ... more details
Infobox journal title Journal of Lipid Research cover File Jlr cover.gif editor Edward A. Dennis , Joseph L. Witztum discipline Lipid Lipids abbreviation J. Lipid Res. publisher American Society for Biochemistry and Molecular Biology country United States frequency history 1959 present openaccess Delayed, after 12 months license impact 6.115 impact year 2010 website http www.jlr.org link1 http www.jlr.org content current link1 name Online access link2 http www.journals.uchicago.edu loi isis link2 name Online archives link2 link2 name JSTOR OCLC 01589637 LCCN 62001186 CODEN JLPRA ISSN 0022 2275 eISSN 1539 7262 The Journal of Lipid Research is a monthly peer review peer reviewed scientific journal that was established in 1959. Since 2000, it is published by the American Society for Biochemistry and Molecular Biology . ref cite journal author Edward A. Dennis year 2009 title Founding, early history, and transformation of the Journal for Lipid Research to an American Society of Biochemistry and Molecular Biology journal url http www.jlr.org cgi content abstract 50 Supplement S3 journal Journal of Lipid Research volume 50 issue Suppl. pages S3 S8 doi 10.1194 jlr.R800093 JLR200 pmid 19116414 pmc 2674755 ref It covers research on lipid s in health and disease, including lipid function and the biochemical and Genetics genetic regulation of lipid metabolism . The journal also covers patient ... About The Journal of Lipid Research ref The journal is published in print and online. Its editors ... of research on lipids journal Journal of Lipid Research volume 50 issue Suppl. pages S1 doi 10.1194 .... The journal was established in response to the lack of published methodology methodologies in lipid research as perceived by Edward H. Ahrens , Donald Zilversmit , and others, who founded Lipid Research ... of Lipid Research url http www.jlr.org cgi reprint 25 13 1425 journal Journal of Lipid Research ... 41 8 1185 title 2000 Changes in management and publication journal Journal of Lipid Research volume ... more details
Wikify date September 2011 A solid lipid nanoparticle SLN is typically spherical with an average diameter between 10 to 1000 nanometers. Solid lipid nanoparticles possess a solid lipid core matrix that can solubilize lipophilic molecules. The lipid core is stabilized by surfactants emulsifiers . The term lipid is used here in a broader sense and includes triglycerides e.g. tristearin , diglycerides e.g. glycerol bahenate , monoglycerides e.g. glycerol monostearate , fatty acids e.g. stearic acid , steroids e.g. cholesterol , and waxes e.g. cetyl palmitate . All classes of emulsifiers with respect to charge and molecular weight have been used to stabilize the lipid dispersion. It has been found ... et al. , 2001 and Small, 1986 . Development of solid lipid nanoparticles is one of the emerging fields ..., as well as in other discipline. Due to their unique size dependent properties, lipid nanoparticles ... enhancement along with controlled and site specific drug delivery. Solid lipid nanoparticles ... combine the advantages of lipid emulsion and polymeric nanoparticle systems while overcoming the temporal ... production Mehnert et al., 2001 . An SLN is generally spherical in shape and consists of a solid lipid ... having minimum carrier cytotoxicity and the solid state of the lipid permit better controlled drug ... water soluble drugs in the solid lipid matrix. Nanotechnology is expected to revolutionize ... the ocular bioavailability of both hydrophilic and lipophilic drugs. Solid lipid nanoparticles have ... lipid nanoparticles for ocular drug delivery journal Drug delivery year 2010 volume 17 issue 7 pages ...,A., Mishra,A., Muthu,MS., Singh,S. 2010 Studies on development repaglinide loaded solid lipid nanoparticles effect of lipid matrix. Therapeutic delivery 1 1 , 63 73. Rawat, M.K. , Jain, A., Singh,S. 2011 Studies on binary lipid matrix based solid lipid nanoparticles of repaglinide In vitro and in vivo ... In vivo and cytotoxicity evaluation of repaglinide loaded binary solid lipid nanoparticles after ... more details
In lipid anchored proteins , a covalently attached fatty acid such as palmitate or myristate serves to anchor them to either face of the cell membrane . Examples include bacterial lipoproteins, G protein s and certain kinase s. It is believed that the fatty acid chain inserts and assumes a place in the lipid bilayer bilayer structure of the membrane alongside the similar fatty acid tails of the surrounding lipid molecules. Potential points of attachment include the terminal amino group of the protein backbone and the side chain of cysteine residues. Prenylation is the attachment of lipid chains to proteins to facilitate their interaction with the cell membrane . Some important prenylation chains are geranylgeraniol , farnesol and dolichol , all products of the HMG CoA reductase metabolic pathway . Other anchors include the GPI anchor see there . The bond is covalent. ref name Karp2009 cite book author Gerald Karp title Cell and Molecular Biology Concepts and Experiments url http books.google.com books?id arRGYE0GxRQC&pg PA128 accessdate 13 November 2010 year 2009 publisher John Wiley and Sons isbn 978 0 470 48337 4 pages 128 ref References Reflist Cell membranes DEFAULTSORT Lipid Anchored Protein Category Membrane biology Category Membrane proteins Category Lipoproteins Category Posttranslational modification Membrane protein stub sr Lipid vezani proteini ... more details
Orphan date April 2012 Protein lipid interaction is the influence of membrane protein s on the lipid physical state or vice versa. The questions which are relevant to understanding of the structure and Function ... have binding sites which are specific for particular lipids and whether the protein lipid complexes ... binding to specific membrane proteins. These involve the use of lipid analogues in reconstituted ... of the two components, a rapidly tumbling species in the bulk lipid phase with a sharp spectrum ... brominated lipid derivatives are able to quench the intrinsic tryptophan fluorescence from membrane proteins. The effiency of quenching depends on the distance between the lipid derivative and the fluorescent tryptophans. Perturbations of the lipid bilayer due to the presence of lateral membrane ... of proteins has little effect on either the order parameter of the lipids in the bilayer or the lipid ... 7 sup sec sup 1 sup , 2 that the order parameters of the bound lipid are barely affected by being adjacent ... lipid structures probed by waveguide spectroscopy and its application to study of supported lipid bilayer ... within lipid bilayers have been used to show how peptide and protein interactions can influence ... time quantitative analysis of lipid disordering by aurein 1.2 during membrane adsorption, destabilisation ... assignments are possible. Binding of peripheral membrane proteins to the lipid bilayer Many ... proteins. But there is a diverse group of proteins which interact directly with the surface of the lipid ... and stabilized by the lipid interaction. Misfolding processes, typically exposing hydrophobic regions within proteins, often are associated with self association to lipid membranes and subsequent aggregation ... Ronan, Teresa J.T. Pinheiro, Insight into early events in the aggregation of the prion protein on lipid ... study of lipid protein interactions in bilayers . Biophys J. 1983 June 42 3 219 224. See also Lipid DEFAULTSORT Protein Lipid Interaction Category Biochemistry Category Proteins Category Lipids Category ... more details
Infobox Disease Name Lipid storage disorder Image Caption DiseasesDB ICD10 ICD10 E 75 e 70 ICD9 ICD9 272.7 ICDO OMIM MedlinePlus eMedicineSubj ped eMedicineTopic 1310 MeshID D008064 Lipid storage disorders or lipidoses are a group of inherited metabolism metabolic disorders in which harmful amounts of lipid s fats accumulate in some of the body s cell biology cells and tissues. ref name urlLipid Storage Diseases Fact Sheet National Institute of Neurological Disorders and Stroke NINDS cite web url http www.ninds.nih.gov disorders lipid storage diseases detail lipid storage diseases.htm title Lipid Storage Diseases Fact Sheet National Institute of Neurological Disorders and Stroke NINDS format work accessdate ref People with these disorders either do not produce enough of one of the enzyme s needed to metabolize lipids or they produce enzymes that do not work properly. Over time, this excessive storage of fats can cause permanent cellular and tissue damage, particularly in the brain , peripheral nervous system , liver , spleen and bone marrow . Lipid s are broadly defined as any fat soluble ... Lipid storage diseases can be inherited two ways Autosomal recessive inheritance occurs when both parents ... will be carriers for the disorder. Diagnosis of the lipid storage disorders can be achieved ... available to determine if the fetus will have the disease or is a carrier. ref Lipid Storage Diseases ... treatments for lipid storage disorders, however, there are some highly effective enzyme replacement ... may prove to be effective for certain lipid storage disorders. ref Ierardi Curto, Lynne MD, PhD. Lipid Storage Disorders. Medscape. 30 Sept. 2010. 6 Dec 2011. http emedicine.medscape.com .... ref Lipid Storage Diseases Fact Sheet National Institute of Neurological Disorders and Stroke NINDS . ref See also Xanthomatosis Niemann Pick disease References reflist Lipid storage disorders Category Lipid storage disorders pt Lipidose es Lipidosis ... more details
Pfam box Symbol PagL Name Lipid A 3 O deacylase PagL image 2erv.gif width 200 caption Pfam PF09411 InterPro SMART Prosite SCOP 2erv TCDB OPM family 26 OPM protein 2erv PDB PDB 2erv Lipid A deacylase PagL is an outer membrane protein with lipid A 3 O deacylase activity. It forms an 8 stranded beta barrel structure. References Crystal structure and catalytic mechanism of the LPS 3 O deacylase PagL from Pseudomonas aeruginosa. Rutten L, Geurtsen J, Lambert W, Smolenaers JJ, Bonvin AM, de Haan A, van der Ley P, Egmond MR, Gros P, Tommassen J Proc Natl Acad Sci U S A. 2006 103 7071 7076. PMID 16632613 Category Protein domains Category Protein families Category Outer membrane proteins membrane protein stub ... more details
merge Lipid polymorphism date February 2012 One of the most important properties of a lipid bilayer is the relative mobility fluidity of the individual lipid molecules and how this mobility changes with temperature ... a lipid bilayer can exist in either a liquid or a solid phase. The solid phase is commonly referred ... melt from the gel to liquid phase. In both phases the lipid molecules are constrained to the two ... this plane. Thus, in a liquid bilayer a given lipid will rapidly exchange locations with its neighbor ... mobility, it is very difficult for lipid molecules to flip flop from one side of the bilayer to the other ... This discrepancy can be understood in terms of the basic structure of the bilayer. For a lipid to flip ... composed of fluid phase bilayers. Physical Origins Image Lipid unsaturation effect.svg right thumb ... behavior of lipid bilayers is largely determined by the strength of the attractive van der Waals force Van der Waals interactions between adjacent lipid molecules. The extent of this interaction is in turn governed by how long the lipid tails are and how well they can pack together. Longer tailed lipids ... decreasing the lipid mobility. Thus, at a given temperature, a short tailed lipid will be more fluid than an otherwise identical long tailed lipid. ref name Rawicz2000 W. Rawicz, K. C. Olbrich, T. McIntosh, D. Needham and E. Evans. Effect of chain length and unsaturation on elasticity of lipid ... to gel phase transition temperature increases with increasing number of carbons in the lipid ... temperature can also be affected by the degree of unsaturation of the lipid tails. An unsaturated double ... chain length by one carbon usually alters the transition temperature of a lipid by ten degrees Celsius ... 53 18 3 align center 60 Mixed Systems Bilayers need not be composed of a single type of lipid and, in fact, most natural membranes are a complex mixture of different lipid molecules. Such mixtures often ... analogs into lipid rafts reconstituted in supported model membrane monolayers. PNAS. 98. 2001 ... more details
A model lipid bilayer is any bilayer assembled in vitro , as opposed to the bilayer of natural cell membrane ... pure synthetic lipid. More physiologically relevant model bilayers can be made with mixtures of several ... advantages and disadvantages. The first system developed was the black lipid membrane or painted ... come at the cost of unwanted substrate interactions which can denature membrane proteins . Black lipid membranes BLM Image Black lipid membrane.svg right thumb 350px Schematic of a painted bilayer experiment ... bilayer system developed was the painted bilayer, also known as a black lipid membrane. The term painted ... and squalene . A lipid monolayer spontaneously forms at the interface between the organic and aqueous phases on either side of the lipid solvent droplet. Because the walls of the aperture are hydrophobic the lipid solvent solution wets this interface, thinning the droplet in the center. Once the two sides of the droplet come close enough together, the lipid monolayers fuse, rapidly excluding ... planar lipid bilayer membranes. Biophysical Journal . 12. 1972 432 445. ref The term black bilayer ..., and E A Dawidowicz. Formation of black lipid membranes by oxidation products of cholesterol. Nature. 212. 1966 718 719. ref Black lipid membranes are also well suited to electrical characterization ... used in conjunction with painted lipid bilayers. Simple measurements indicate when a bilayer forms ... performed to combine electrophysiological and structural investigations of Black Lipid Membranes ... of Black lipid membranes. Applied Physics Letters. 95. 2009 203703. ref The main problems associated ... name Montal1972 M Montal and P Mueller. Formation of Bimolecular Membranes from Lipid Monolayers and a Study .... Typically, a black lipid membrane will survive for less than an hour, precluding long term experiment ... Analysis of Free Standing Lipid Membranes Facilitated by Micromachined Apertures. Langmuir. 24. 2008 ... Planar Lipid Bilayer Membranes Anchored to an In Situ Polymerized Hydrogel. Advanced Materials. 20 ... more details
Wikify date October 2010 Infobox disease Name Neutral lipid storage disease Image Chanarin Dorfman Syndrome smear 2009 11 13.JPG Caption ICD10 ICD9 ICDO OMIM 275630 MedlinePlus eMedicineSubj eMedicineTopic DiseasesDB 32708 MeshID Neutral lipid storage disease also known as Chanarin Dorfman syndrome is an autosomal recessive disorder characterized by accumulation of triglycerides in the cytoplasm of leukocytes, muscle, liver, fibroblasts, and other tissues. ref name Fitz2 Freedberg, et al. 2003 . Fitzpatrick s Dermatology in General Medicine . 6th ed. . McGraw Hill. ISBN 0071380760. ref rp 502 ref name Andrews James, William Berger, Timothy Elston, Dirk 2005 . Andrews Diseases of the Skin Clinical Dermatology . 10th ed. . Saunders. ISBN 0721629210. ref rp 564 It can be associated with CGI58 . ref name pmid11590543 cite journal author Lef vre C, Jobard F, Caux F, et al. title Mutations in CGI 58, the gene encoding a new protein of the esterase lipase thioesterase subfamily, in Chanarin Dorfman syndrome journal Am. J. Hum. Genet. volume 69 issue 5 pages 1002 12 year 2001 month November pmid 11590543 pmc 1274347 doi 10.1086 324121 url http linkinghub.elsevier.com retrieve pii S0002 9297 07 61316 0 ref See also List of cutaneous conditions References reflist DEFAULTSORT Neutral Lipid Storage Disease Category Genodermatoses Category Enzyme defects Genodermatoses stub ... more details
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