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Topic: Triacylglyceride


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In the News (Sun 20 Dec 09)

  
  Nano Science   (Site not responding. Last check: 2007-10-09)
Triacylglyceride lipids are present in all living cells.
Triacylglyceride lipases exhibit their highest enzymatic activity towards the aggregated state of the lipids (Fojan et al., 2000).
We have recently discovered a mechanism which purpose is still a mystery: UV illumination of the single tryptophan residue of a triacylglyceride lipase breaks the adjacent disulphide bond (MT Neves-Petersen et al., 2002).
www.nanobio.dk /research.asp?mid=48   (969 words)

  
 Bodybuilding.com - Big Cat - Big Cat's Corner: Issue 3!
The discovery of leptin began with the presumption of Kennedy (1953) that there was a feedback signal related to the triacylglyceride content of the fat cell.
Triacylglycerides are the way fats are generally stored in adipocytes, esterifying three fatty acids with a glycerol backbone.
Because triacylglyceride content per cell has now been diminished, leptin output by these cells is decreased.
www.bodybuilding.com /fun/bigcat4.htm   (4736 words)

  
 Avant Labs -> Leptin the next big let down
The discovery of leptin began with the presumption of Kennedy (1953) that there was a feedback signal related to the triacylglyceride content of the fat cell.
Triacylglycerides are the way fats are generally stored in adipocytes, esterifying three fatty acids with a glycerol backbone.
Because triacylglyceride content per cell has now been diminished, leptin output by these cells is decreased.
forum.avantlabs.com /?act=ST&f=1&t=7935&   (6572 words)

  
 Biochemistry of Lipids
Triacylglycerides are composed of a glycerol backbone to which 3 fatty acids are esterified.
The basic structure of phospolipids is very similar to that of the triacylglycerides except that C-3 (sn3)of the glycerol backbone is esterified to phosphoric acid.
The building block of the phospholipids is phosphatidic acid which results when the X substitution in the basic structure shown in the Figure below is a hydrogen atom.
web.indstate.edu /thcme/mwking/lipids.html   (825 words)

  
 Method for the enzymatic production of emulsifiers containing mono-and diacylglycerides patent invention
In a first step a), a mixture of a phospholipid component and a triacylglyceride component is prepared, then in step b) a quantity of an aqueous solution containing a (phospho)lipase is added to the mixture obtained, to produce a water content of the mixture of between 3 and 15 wt.
Lecithins and lysolecithins are usually a complex mixture of phospholipids (1,2-diacylglycerol phosphate), lysophospholipids (1- or 2-monoacylglycerol phosphate as hydrolysis derivative of phospholipids), glycolipids and triacylglycerides.
[0004] Mono-, di- and triacylglycerides have one, two or three acyl groups which are derived from a long-chain saturated or monounsaturated or polyunsaturated fatty acid.
www.freshpatents.com /Method-for-the-enzymatic-production-of-emulsifiers-containing-mono-and-diacylglycerides-dt20070111ptan20070009644.php   (1658 words)

  
 Information for Schools - Lipids   (Site not responding. Last check: 2007-10-09)
There are many different types of lipids, one of the simplest is the triacylglyceride.
The image shows a triacylglyceride, "R" represents fatty acids of different lenghts.
Functional groups, as as choline, serine and ethanolamine may be attached to this phosphate group, and so increase the functionality of the lipid.
www2.bioch.ox.ac.uk /~oubsu/schools/lipids.htm   (83 words)

  
 Alcohol Can Help Fight Cholesterol | JoinTogether.org   (Site not responding. Last check: 2007-10-09)
Participants were randomly assigned to complete one of three eight-week dietary programs: a control diet with no alcohol; a diet that included one drink a day; and a diet that contained two drinks a day.
Doctors compared the women's cholesterol and triacylglyceride levels before, during, and after each phase of the study.
Baer and colleagues determined that the group that drank one alcoholic beverage a day reduced their triacylglycerides levels by 8 milligrams and their low-density lipoproteins -- or "good" cholesterol level -- by 4 milligrams.
www.jointogether.org /sa/news/summaries/reader/0,1854,548705,00.html   (288 words)

  
 Especificidad en la acumulacion de acidos grasos en tejido adiposo de mamiferos.   (Site not responding. Last check: 2007-10-09)
The differences among species were significant in most cases being maximal in pig (57.7% of saturated fatty acids) and hamster (24.4% of saturated fatty acids).
There is a direct relationship between the position of each fatty acid in the triacylglyceride and its proportion in the tissue, this proportion being maximal when the fatty acid is placed on position 2 in the triacylglycerides.
The position of the different fatty acids in the triacylglyceride studied could be a part of this mechanism.
www.infodoctor.org /cgi-bin/abstracts.pl?uid=3797783   (257 words)

  
 Diabetes: Antidiabetic Effect of White Skinned Sweet Pota... @ HighBeam Research   (Site not responding. Last check: 2007-10-09)
In the glucose tolerance test after 7 weeks of treatment, increases in blood glucose levels after glucose loading were inhibited by the administration of WSSP.
Blood triacylglyceride, free fatty acid and lactate levels were lowered by the oral administration of WSSP.
Similar effects on blood insulin, lipid and lactate levels were observed after the administration of troglitazone.
www.highbeam.com /library/doc0.asp?DOCID=1G1:62892508&refid=ip_encyclopedia_hf   (324 words)

  
 Velkommen til Aalborg Universitet   (Site not responding. Last check: 2007-10-09)
Triacylglyceride lipases exhibit their highest enzymatic activity towards the aggregated state of the lipids (Fojan et al., 2000).
As soon as the surface is exposed to triacylglyceride lipase acitivity, these features disappear (Fojan et al., 2002).
We have recently discovered a mechanism which purpose is still a mystery: UV illumination of the single tryptophan residue of a triacylglyceride lipase breaks the adjacent disulphide bond (MT Neves-Petersen et al., 2002).
www.nanotech.auc.dk /bio.htm   (1121 words)

  
 Novel metabolic targets and markers patent invention
The method includes regulating a lipoprotein component ratio selected from the group consisting of cholesterol ester to phosphatidylcholine, cholesterol ester to apoprotein, free cholesterol to apoprotein, and triacylglyceride to phosphatidylcholine in the system whereby regulating the density of a lipoprotein in the system.
The method includes determining a lipoprotein component ratio selected from the group consisting of cholesterol ester to phosphatidylcholine, cholesterol ester to apoprotein, free cholesterol to apoprpotein, and triacylglyceride to phosphatidylcholine in the system wherein the lipoprotein component ratio is inversely related to the density of the lipoprotein in the system.
The method includes determining a lipoprotein component ratio selected from the group consisting of cholesterol ester to phosphatidylcholine, cholesterol ester to apoprotein, free cholesterol to apoprotein, and triacylglyceride to phosphatidylcholine in the system wherein the lipoprotein component ratio correlates with the size of the lipoprotein in the system.
www.freshpatents.com /Novel-metabolic-targets-and-markers-dt20060629ptan20060141550.php   (1307 words)

  
 DIALOG Dissertation Abstracts   (Site not responding. Last check: 2007-10-09)
Levels of total lipid in M. annularis subject to experimental sedimentation were highly variable (10.07 - 210.37 mg lipid/g dry tissue) and did not differ significantly with treatment (p > 0.25).
The ratio of storage lipid (wax ester + triacylglyceride) to structural lipid (sterol esters + phospholipid) decreased significantly (from 0.25 to 0.14, n = 22, p < 0.01) in treatment colonies.
Fatty acid methyl esterization (FAME) analysis of colonies exposed to experimental sedimentation showed a reduction of the algal, 18:3(n-6) and 18:4(n-3), polyunsaturated fatty acid (PUFA) in the polar fraction of tissue lipid extracts.
aslo.org /phd/dialog/199903-1.html   (467 words)

  
 Metabolomic analysis of adrenal lipids during hypoxia in the neonatal rat: implications in steroidogenesis -- Bruder et ...
triacylglyceride fractions of both serum and adrenal tissue.
Hypoxia had no effect on fatty acid concentrations in the cardiolipin, lysophosphatidylcholine, and phosphatidylethanolamine fractions of either the adrenal or serum (data not shown).
in the triacylglyceride fraction of the adrenal is depicted
ajpendo.physiology.org /cgi/content/full/286/5/E697   (3796 words)

  
 [No title]   (Site not responding. Last check: 2007-10-09)
Oilbodies are discrete organelles found in oil seeds where they serve as the site for triacylglyceride storage.
They are comprised of a triacylglyceride core surrounded by a half- unit phospholipid membrane and an outer shell of specialized proteins known as oleosins.
With this process, separating the protein in question from the oilbody is as easy as "separating cream from milk," says Baum.
www.mult-sclerosis.org /news/Sep2002/PlantProteinsDrugDevelopmentCosts.html   (481 words)

  
 ARS | Publication request: Organization of Lipid Reserves in Cotyledons of Primed and Aged Sunflower Seeds
Despite ultrastructural changes, lipid content within the cotyledons remained close to 50% of the dry matter of the seed and the level of saturated and unsaturated fatty acids was unchanged in primed and aged seeds, with only severely aged seeds showing a net decrease in linoleic acid.
Typical of triacylglycerides, the lipids in sunflower seeds exhibited polymorphic crystalline and amorphous solid phases when cooled to subzero temperatures.
These changes in the thermal behavior of lipids in vivo are consistent with losses and gains, respectively, of interacting non-lipid moieties in the triacylglyceride matrix, which may be relevant to the disassembly of liposomes during germination or high-humidity aging.
www.ars.usda.gov /research/publications/publications.htm?SEQ_NO_115=134250&pf=1   (384 words)

  
 Avatrim Diet with Green Tea
At the five-week mark, the researchers tested oral glucose tolerance and found that glucose levels reduced by 23, 35 and 48 percent in the 2.5-, 5- and 10-gram categories respectively.
At six weeks into the study, the scientists tested insulin tolerance and blood samples were taken at the end of the test to analyze glucose, free fatty acids and triacylglyceride levels.
The researchers also studied the effects of 5 grams of EGCG per kilogram of diet over a 10-week period on mildly diabetic rats and found that glucose tolerance, blood glucose levels, and free fatty acid plasma concentrations all improved.
www.avatrim.com /articles/green_tea_prevents_type_2_diabetes.php   (364 words)

  
 Untitled Document   (Site not responding. Last check: 2007-10-09)
Synthesis of triacylglyceride from preformed fatty acid occurred at a much greater rate than de novo lipogenesis from glucose.
The oxidation of exogenous glucose to CO however, was high and responsive to increasing carbohydrate level in the diet.
These observations suggest that sunshine bass use preformed fatty acid, such as that coming from the diet, much more readily than dietary glucose and that glucose may be providing the majority of energy for triacylglyceride biosynthesis and glycerol backbone for fatty acid esterification.
wfscnet.tamu.edu /reports/ar99/Aqua99/Aq10.htm   (351 words)

  
 Physiologic and Pharmacologic Factors Influencing Glyceroneogenic Contribution to Triacylglyceride Glycerol Measured by ...
Physiologic and Pharmacologic Factors Influencing Glyceroneogenic Contribution to Triacylglyceride Glycerol Measured by Mass Isotopomer Distribution Analysis -- Chen et al.
the distribution of mass isotopomers in triacylglyceride glycerol.
in triacylglyceride glycerol is an informative indicator of
www.jbc.org /cgi/content/abstract/280/27/25396   (549 words)

  
 [No title]
Each of the drugs increased triacylglyceride synthesis (50 % at 1 mikroM), cellular triacylglyceride content (16 %), and expression of fatty acid synthase (FAS) by reporter gene and Northern blot analysis (2-fold and 2.7-fold at 1 and 0.3 mikroM, respectively).
HMGRI decreased the ratio of cholesterol to apo B in newly synthesised apo B containing particles by approximately 50 % and increased the ratio of triacylglycerides to apo B by approximately 35 %.
We conclude that regulatory responses to HMGRI are mediated by SREBP-2 rather than by SREBP-1, that HMGRI oppositely affect the cellular cholesterol and triacylglyceride production, that HMGRI moderately decrease the release of apo B containing particles, but profoundly alter their composition.
www.kenes.com /73eas/program/abstracts/325.doc   (280 words)

  
 65B-11 Evaluation of triacylglyceride crystallization by DSC and rheological measurements.   (Site not responding. Last check: 2007-10-09)
Evaluation of triacylglyceride crystallization by DSC and rheological measurements.
The triacylglycerides (TAGS) have several physical chemical properties that determine processing conditions of fats and oil, as well as their functionality in food systems.
Thus, the phase changes of TAGS (i.e., crystallization, melting, and polymorphic transformations), are physical properties that determine the solid fat content and its temperature dependence in products such as chocolate, butter, low fat spreads, and shortenings.
ift.confex.com /ift/2000/techprogram/paper_3047.htm   (209 words)

  
 Rachael Sondeno
Description: Evidence is accumulating that, in addition to the overall fatty acid profile, the triacylglyceride structure and species composition are of importance when considering the nutritional effects of dietary fat.
The first step of triacylglyceride biosynthesis is the acylation of glycerol 3-phosphate at the sn-1 position by glycerol 3-phosphate acyl transferase (GPAT) to form lysophosphatidic acid.
Studies carried out on the acyl chain specificities of acyl transferases show that GPAT and DGAT are flexible in their use of acyl CoA substrates, whilst LPAAT is highly selective.
animalscience.ucdavis.edu /Faculty/VanEenennaam/Students/Sondeno.htm   (228 words)

  
 [No title]
gluconeogenesis -inc. fatty acid synthesis -inc. triacylglyceride synthesis -inc. amino acid degradation -inc. protein synthesis-inc. glycogen breakdown -inc. gluconeogenesis -inc. fatty acid oxidation -inc. ketone bodiesAdipose tissue-inc. glucose transport -inc. glycolysis -incr.
triacylglyceride degradation-inc. triacylglyceride degradation -inc. fatty acid release -decr.
When a ligand binds to these receptors, the receptors transfer a phosphate group from ATP to certain tyrosine side chains both on the receptor and other specific cellular proteins.
www-personal.umich.edu /~lemichae/firstaid/microbio2.doc   (1768 words)

  
 Nat' Academies Press, Biobased Industrial Products: Research and Commercialization Priorities (2000)
Coriander is grown primarily for its use as a spice, but it may have potential industrial uses.
Also, the derivation (hydrolysis) of the petroselenic acid ester from the seed triacylglyceride yields glycerol, another chemical with industrial utility.
All of the carbon atoms in the seed oil can thus be used with no intrinsic processing losses.
www.nap.edu /openbook/0309053927/html/38.html   (655 words)

  
 Water Science & Technology 43:1 (2000) 165-172 - TE Dueholm et al. - Transformation of lipids in activated sludge
However, the adsorption of long-chain fatty acid to surfaces of sludge flocs made it difficult to determine initial uptake rates of long-chain fatty acids.
It was not possible to describe the hydrolysis rate of triacylglyceride by OUR and NUR to long-chain fatty acids because the hydrolysis rate was very slow.
The processes in the suggested model were the adsorption/desorption of both triacylglyceride, and long-chain fatty acid onto surfaces of sludge flocs, hydrolysis of triacylglyceride by lipases and the uptake of long-chain fatty acid by bacteria under various conditions.
www.iwaponline.com /wst/04301/wst043010165.htm   (267 words)

  
 Biostatistics Research: Statistics, Uncertainty, Probability, Modeling
Higher prevalence of smoking and lower BMI, waist circumference, cholesterol and triacylglyceride levels in Prague's homeless compared to a majority of the Czech population.
Body mass index (BMI), waist circumference (WC), total cholesterol (TC), triacylglycerides (TAG)...
OBJECTIVES: To evaluate differences in accuracy of 2 weight estimation methods for children when compared with measured weights: the Broselow-Luten tape (patient's height as the predictor) and the devised weight estimation method (DWEM) (patient's height and body habitus as predictors).
biostatistics.researchtoday.net   (964 words)

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