LIPIDS

a broad class of organic products found in living systems. Most are insoluble in water but soluble in nonpolar solvents. The definition excludes the mineral oils and other petroleum products obtained from fossil material. Major classes of lipids include the fatty acids, the glycerol-derived lipids (including the fats and oils and the phospholipids), the sphingosine-derived lipids (including the ceramides, cerebrosides, gangliosides, and sphingomyelins), the steroids and their derivatives, the terpenes and their derivatives, certain aromatic compounds, and long-chain alcohols and waxes. In living organisms lipids serve as the basis of cell membranes and as a form of fuel storage. Often lipids are found conjugated with proteins or carbohydrates, and the resulting substances are known as lipoproteins and lipopolysaccharides. The fat-soluble vitamins can be classified as lipids. Liposomes are spherical vesicles formed by mixing lipids with water or water solutions. They have found applications in the oral administration of some drugs (e.g., insulin and some cancer drugs), since they retain their integrity until they are broken down by the lipases in the stomach and small intestine.

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The Columbia Encyclopedia, Sixth Edition Copyright© 2004, Columbia University Press. Licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

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Questia Books and Articles on: Lipids
We found: 1995 results
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652  

 

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702  

 

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books on: Lipids  - 652 results

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1.
Insect Lipids: Chemistry, Biochemistry, and Biology
Book by David W. Stanley-Samuelson, Dennis R. Nelson; University of Nebraska Press, 1993
Subjects: Insects--Physiology, Lipids
...have been used to remove lipid mixtures rich in hydrocarbons...removal of insect surface lipids, including the non...extraction of internal lipids through a damaged cuticle. The dominate lipid class of internal lipids in insects is triacylglycerol...
2.
The Politics of Fat: Food and Nutrition Policy in America
Book by Laura S. Sims; M.E. Sharpe, 1998
Subjects: Food--Fat Content, Lipids In Human Nutrition, Nutrition Policy--United States
...Essential Physiological and Culinary Component Lipids or by their more familiar name, fats...vinegar on the bottom. Technically, lipids include triglycerides which most people...is the best known . Further, fats are lipids that are solid at room temperature, while...
3.
Vital Dust: Life as a Cosmic Imperative
Book by Christian De Duve; Basic Books, 1995
Subjects: Evolution (Biology), Life (Biology), Life--Origin
...than do the corresponding ester lipids. Furthermore, there is a clear...temperature of a cells membrane lipids and the temperature of the environment...their functions only if their lipid bilayers are kept fluid. On...each cell type has membrane lipids that are fluid at the normal...
4.
Encyclopedia of the Human Brain - Vol. 1
Book by V. S. Ramachandran; Academic Press, 2002
Subjects: Brain--Encyclopedias, Neurology--Encyclopedias, Neurosciences--Encyclopedias
...months after birth. B. Lipids of Gray and White Matter The general view of lipid distribution in the brain is that lipids such as cholesterol...proteins. 1. Myelin Lipids and Proteins The most...that take place in the lipid composition of the...
5.
Encyclopedia of Earth and Physical Sciences - Vol. 6
Book by Marshall Cavendish; Marshall Cavendish, 2005
Subjects: Earth Sciences--Encyclopedias, Physical Sciences--Encyclopedias
LIPIDS Lipids are substances, principally biological, that are insoluble in water but...secretion that is composed of fatty acid esters. CONNECTIONS 0 Complex lipids are often composed of fatty ACIDS and other FUNCTIONAL GROUPS. 0 A fat...
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journal articles on: Lipids  - 702 results

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1.
Oxidative Damage to DNA and Lipids as Biomarkers of Exposure to Air Pollution
Journal article by Peter Moller, Steffen Loft; Environmental Health Perspectives, Vol. 118, 2010
Subjects: Air pollution--Health aspects, Air pollution--Research, Lipids--Physiological aspects, Lipids--Research, Oxidative stress--Diagnosis, Oxidative stress--Research, Oxidative stress--Risk factors
...causes damage to DNA and lipids. OBJECTIVE: We determined...oxidatively damaged DNA and lipid peroxidation products...released from oxidized lipids <br/ LPO products CDs...the LPO process <br/ Lipid hydroperoxides Reaction...Spectrophotometry radical in lipids Breakdown carbonyl product...
2.
Cross-Sectional and Longitudinal Relationships between Alcohol Consumption and Lipids, Blood Pressure and Body Weight Indices *
Journal article by Lando L.J. Koppes, J.W.R. Twisk, W. Van Mechelen, J. Snel, H.C.G. Kemper; Journal of Studies on Alcohol, Vol. 66, 2005
Subjects: Alcoholism--Health aspects, Alcoholism--Risk factors, Blood lipids--Health aspects, Blood pressure--Health aspects, Body weight--Health aspects
...the changes in these lipids, blood pressure and...consumption. The mean lipid, blood pressure and...or changes observed in lipids, blood pressure and...mortality: Results from the Lipid Research Clinics Follow...analysis of effects on lipids and haemostatic factors...
3.
Alzheimer's Disease and Activity of Lipid Membrane
Journal article by Vasant V. Merchant; International Journal of Humanities and Peace, Vol. 16, 2000
Subjects: Alzheimer's disease--Prevention, Brain research--Physiological aspects, Lipids--Therapeutic use
...ALZHEIMERS DISEASE AND ACTIVITY OF LIPID MEMBRANE by Vasant V. Merchant...realization, the scientific name "lipid" is used. Lipids can be found everywhere, from...disease (AD). In spite of this, lipids are commonly ignored in favor of...
4.
Dietary Fat Interacts with PCBs to Induce Changes in Lipid Metabolism in Mice Deficient in Low-Density Lipoprotein Receptor
Journal article by Bernhard Hennig, Gudrun Reiterer, Michal Toborek, Sergey V. Matveev, Alan Daugherty, Eric Smart, Larry W. Robertson; Environmental Health Perspectives, Vol. 113, 2005
...detection of separated lipids. Neutral lipid staining of liver tissues...also by serum and liver lipid analyses. Lipids appear to be removed from...and quantification of lipid classes: application to fish lipids. J Chromatogr B Biomed...
5.
No Bones about It: Using Lipid Analysis of Burned Rock and Groundstone Residues to Examine Late Archaic Subsistence Practices in South Texas
Journal article by J. Michael Quigg, Mary E. Malainey, Roman Przybylski, Gregory Monks; Plains Anthropologist, Vol. 46, 2001
Subjects: Anthropology, Archaeology, Prehistoric era, Stone, Texas
...surfaces were sampled for plant residues. LIPID RESIDUE EXTRACTION AND ANALYSIS The...acid analysis if culturally introduced lipids are present (Malainey 1999, 2000a...water from the sample. The dry total lipid extract was transferred to a screw...
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magazine articles on: Lipids  - 345 results

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1.
Lipid Modifier Combining Statin and Niacin to Bow in 2002
Magazine article by Naomi Pfeiffer; Drug Topics, Vol. 145, November 19, 2001
Subjects: KOS Pharmaceuticals Inc, Lipids, Prescription drugs, R&D, Research & development, United States
Lipid Modifier Combining Statin...various atherogenic lipids and a persistent calling for lower target lipid levels, controlling...Symposium on Drugs Affecting Lipid Metabolism held in New...effects on all major lipids," the researchers...
2.
Aggressive Lipid Control Fails to Benefit Type 2 Diabetics
Magazine article by Maude Campbell; Drug Topics, Vol. 154, June 2010
Subjects: Cardiovascular disease, Diabetes, Lipids, Prescription drugs, United States
Aggressive Lipid Control Fails to Benefit Type 2 Diabetics...events, it was hoped that combination lipid treatment would lower risk and improve...Cardiovascular Risk in Diabetes (ACCORD) lipid trial included 5,518 patients with type...
3.
Heart Stars: Single-bolus Clot Busters and Lipid Busters
Magazine article by Jean McCann; Drug Topics, Vol. 143, April 19, 1999
Subjects: Cardiovascular disease, Cholesterol, Clinical trials, Lipids, Prescription drugs, United States
...Stars: Single-bolus Clot Busters and Lipid Busters by Jean McCann Two new clot busters...scripts may be written from now on for lipid-lowering drugs, thanks to more studies...Other reports at the meeting showed that lipid-lowering drugs are beneficial in preventing...
4.
Long-suffering Lipids Gain Respect
Magazine article by Jennifer Fisher Wilson; The Scientist, Vol. 17, March 10, 2003
...Thiele approaches lipids on three levels...characterizes the lipid composition of different...enzymes to coordinate lipid and glucose metabolism, or lipids serve as a structural...now to measure every lipid. New lipids, presumably involved...
5.
Lipid Rafts' Failure to Launch
Magazine article by Jill U. Adams; The Scientist, Vol. 20, June 2006
...Vale did) may miss lipid-protein interactions...Cornell University says lipids play a more prominent...influenced by their lipid environment, says...University. In rafts, lipids are packed more tightly...cells the ordered lipids surrounding the TCR...Vale allows that if lipid rafts are as small...
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newspaper articles on: Lipids  - 282 results

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1.
Soap and Water Shown to Kill HIV; Inactivates Lipid Virus like It Cuts Dishpan Grease
Newspaper article; The Washington Times, May 26, 2004
Soap and Water Shown to Kill HIV; Inactivates Lipid Virus like It Cuts Dishpan Grease. Byline: Joyce Howard Price...soap would kill HIV, even before the experiments. "HIV is a lipid. The outside of the virus is composed of fat," she said...
2.
'Enough to Eat' Food May Hit Shelves
Newspaper article; The Journal (Newcastle, England), February 2, 2008
Subjects: Food, Food additives industry, Lipids
...kinds of natural fatty molecules called lipids, found in plant leaves and cereals...Researchers hope the hunger-busting lipids will be incorporated into a wide range...area being made for some products." The lipids were difficult to obtain naturally from...
3.
Bursting Bubbles That Could Blast Away Breast Cancer; under Attack: A Breast Cancer Cell under a Scanning Electron Micrograph
Newspaper article; The Daily Mail (London, England), August 28, 2007
Subjects: Breast cancer, Cancer treatment, Cancer--Care and treatment, Cell research, Cytological research, Lipids
...targeted at the tumour, it allows the fat bubbles and theircargo of drugs to leak into the tumour itself. The bubbles are made of lipids or fat material similar to those that surroundevery cell in the body. They are designed so their structure melts at 42C,releasing...
4.
Cholesterol Crucial, but Many Don't Get Checked
Newspaper article; The Washington Times, October 1, 2007
Subjects: Cholesterol--Reports, Membrane lipids--Reports
...young: 40 percent of those ages 20 to 34 have not had the simple blood test, which detects the presence of potentially harmful lipids - fatty substances - in their blood. A third of uninsured people of all ages have not been screened, along with 21 percent...
5.
War on Fatty Food to Last a Generation
Newspaper article; Western Mail (Cardiff, Wales), August 28, 2007
Subjects: Lipids--Reports, Lipids--Surveys
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encyclopedia articles on: Lipids  - 14 results

       More encyclopedia Results: 1-10 11-14 >>  
 
1.
Lipids
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
LIPIDS a broad class of organic products found in living systems...products obtained from fossil material. Major classes of lipids include the fatty acids , the glycerol-derived lipids (including the fats and oils and the phospholipids...
2.
Arteriosclerosis
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...accumulations inside the vessel walls of lipids, e.g., cholesterol; this condition...uptake and metabolize) low-density lipids that contain cholesterol. Reduction of...increase utilization of excess low-density lipids. Although the relationship between blood...
3.
Lipoprotein
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...the various fatty substances classed as lipids , including fatty acids and steroids such...interaction; proteins complexed with some other lipids do so by the information of covalent chemical...the membrane is a continuous sheet of lipid molecules, largely phospholipids , in...
4.
Decay of Organic Matter
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...living tissue as a source of nutrition. The polysaccharides, lipids, nucleic acids, and proteins of dead tissue are broken down...building blocks for the synthesis of their own polysaccharides, lipids, nucleic acids, and proteins, and as a source of chemical...
5.
Protein
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2009
...called prosthetic groups . Conjugated proteins include glycoproteins , which contain carbohydrates; lipoproteins , which contain lipids; and nucleoproteins, which contain nucleic acids . Classified by biological function, proteins include the enzymes , which...
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