News tagged with cholesterol
'Good cholesterol' nanoparticles seek and destroy cancer cells
High-density lipoprotein's hauls excess cholesterol to the liver for disposal, but new research suggests "good cholesterol" can also act as a special delivery vehicle of destruction for cancer.
Nanotechnology / Bio & Medicine
Apr 01, 2011 |
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Researchers find new evidence on how cholesterol gets moved from HDLs to LDLs
Researchers with the Lawrence Berkeley National Laboratory (Berkeley Lab) have found new evidence to explain how cholesteryl ester transfer protein (CETP) mediates the transfer of cholesterol from "good" high ...
Feb 21, 2012 |
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UW plant breeders develop an even heart-healthier oat
University of Wisconsin-Madison plant breeders have developed a new oat variety that's significantly higher in the compound that makes this grain so cardio-friendly.
May 16, 2012 |
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Possible new route to fight dengue virus pointed
Researchers have identified enzymes and biochemical compounds called lipids that are targeted and modified by the dengue virus during infection, suggesting a potential new approach to control the aggressive ...
Mar 22, 2012 |
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Closer look at cell membrane shows cholesterol 'keeping order'
(PhysOrg.com) -- Cell membranes form the "skin" of most every cell in your body, but the ability to view them up close and in motion cannot be rendered by many experimental techniques. A team of scientists ...
Mar 31, 2011 |
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Researchers identify structure of apolipoprotein
Using a sophisticated technique of x-ray crystallography, researchers Xiaohu Mei, PhD, and David Atkinson, PhD, from Boston University School of Medicine (BUSM) have for the first time obtained an "image" of the structure ...
Nov 04, 2011 |
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Researchers develop paper-thin device to test cholesterol levels
(PhysOrg.com) -- Paper-thin sensors that use the latest technology in miniaturization and printing could revolutionize the way point of care testing is carried out for cholesterol and lead to further applications ...
Chemistry / Analytical Chemistry
Feb 29, 2012 |
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Study suggests why some animals live longer
(PhysOrg.com) -- Scientists at the University of Liverpool have developed a new method to detect proteins associated with longevity, which helps further our understanding into why some animals live longer ...
Mar 29, 2012 |
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X-rays help advance the battle against heart disease
(PhysOrg.com) -- Scientists from Imperial College London and Diamond Light Source have revealed the structure of a cholesterol-lowering-drug target. Published in the journal Nature, this finding could lead ...
Oct 06, 2011 |
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Drugmakers brace for generic versions of biotech blockbusters
In 2001, Abbott Laboratories spent nearly $7 billion on the biggest acquisition in the company's 123-year history, primarily to access one drug, Humira.
Medicine & Health / Medications
May 27, 2011 |
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Diabetes becomes a disease of the young
Some people say aiming to look sleek in your swimsuit or wedding duds is the biggest motivator for losing weight. But Mike Durbin's incentive for dropping pounds beats all.
Medicine & Health / Diseases, Conditions, Syndromes
Jun 27, 2011 |
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Blueberry's effects on cholesterol examined in lab animal study
Laboratory hamsters that were fed rations spiked with blueberry peels and other blueberry-juice-processing leftovers had better cholesterol health than hamsters whose rations weren't enhanced with blueberries. That's according ...
May 31, 2011 |
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NIH stops study of niacin to prevent heart attacks
(AP) -- Disappointing news: A drug that raises people's so-called good cholesterol didn't go on to prevent heart attacks.
Medicine & Health / Medications
May 26, 2011 |
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Toward new medications for chronic brain diseases
A needle-in-the-haystack search through nearly 390,000 chemical compounds had led scientists to a substance that can sneak through the protective barrier surrounding the brain with effects promising for new drugs for Parkinson's ...
Apr 20, 2011 |
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New protein could prove powerful target for cholesterol lowering drugs
A protein has been discovered that may have a profound effect on cholesterol metabolism. That discovery raises the possibility that the protein, dubbed IDOL, could be a powerful target for cholesterol-lowering drugs, says ...
May 17, 2011 |
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Cholesterol
Cholesterol is a lipidic, waxy steroid found in the cell membranes and transported in the blood plasma of all animals. It is an essential component of mammalian cell membranes where it is required to establish proper membrane permeability and fluidity. Cholesterol is the principal sterol synthesized by animals, but small quantities are synthesized in other eukaryotes, such as plants and fungi. It is almost completely absent among prokaryotes, which include bacteria. Cholesterol is classified as a sterol.
Since cholesterol is essential for life, it is primarily synthesized de novo within the body. However excessive levels of cholesterol in blood circulation are strongly associated with progression of atherosclerosis. For an adult, typical total body cholesterol synthesis is about 1 gram per day (less if dietary intake is high) and total body cholesterol content is about 35 g. Average dietary intake in western societies is 0.2 - 0.3 grams. Cholesterol is excreted by the liver via the bile into the digestive tract. Typically about 50% of the excreted cholesterol is reabsorbed by the small bowel back into the blood stream.
The name cholesterol originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as François Poulletier de la Salle first identified cholesterol in solid form in gallstones, in 1769. However, it was only in 1815 that chemist Eugène Chevreul named the compound "cholesterine".
For more information about Cholesterol, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
