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Dictionary » C » Cholesterol

Cholesterol

Cholesterol

1. (Science: biochemistry) a pearly, fatlike steroid alcohol, C27H45OH, crystallizing in the form of leaflets or plates from dilute alcohol and found in animal fats and oils, in bile, blood, brain tissue, milk, yolk of egg, myelin sheaths of nerve fibres, the liver, kidneys and adrenal glands.

It constitutes a large part of the most frequently occurring type of gallstones and occurs in atheroma of the arteries, in various cysts and in carcinomatous tissue. Most of the bodys cholesterol is synthesised in the liver, but some is absorbed from the diet. It is a precursor of bile acids and is important in the synthesis of steroid hormones.

2. (Science: chemical) a commercial preparation of cholesterol is used as a pharmaceutic aid.

Synonym: cholesterin.

Origin: gr. Stereos = solid


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Re: [molecular bio]calculation

... have one more... :cry: stock solutions and powders available: NaCl powder (molecular weight 58.4), 1 M potassium phosphate, and a 5 mg/ml stock of cholesterol (mol. wt. 386.7) Acetic acid (CH3COOH) is a liquid at room temperature. When making acetate buffers (as in the question above) you must ...

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by scholesmu
Sun Aug 16, 2009 11:49 am
 
Forum: Molecular Biology
Topic: [molecular bio]calculation
Replies: 3
Views: 122

Stomach bloating and weight gain

... digesting the food differently. And depending on what the meal consists of (high protein. low carbs, high fat, even burnt meat with its cholesterol derivatives), different reactions begin different cascades thru out the body. Even the immune system gets involved. Insulin is a hormone ...

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by kolean
Mon Jul 20, 2009 10:43 pm
 
Forum: Physiology
Topic: Stomach bloating and weight gain
Replies: 299
Views: 483314

Stomach bloating and weight gain

... visit the ER. I imagine the polyp was smaller than 10mm or the doctors should have shown concern. Often these polyps are caused by an increase in cholesterol. Were your cholesterol levels tested? If you are having cholesterol problems, this may be an indicator that your diet might need to be re-examined. ...

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by MichaelXY
Sun Apr 26, 2009 9:23 am
 
Forum: Physiology
Topic: Stomach bloating and weight gain
Replies: 299
Views: 483314

Re: membrane cholesterol

This is a fascinating topic. I am very interested in membrane cholesterol. The whole structure, function and morphology seems to depend on cholesterol. The condensed cholesterol-rich lipid rafts have up to 50% molecular cholesterol. I suspect it is able ...

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by glynthincs
Wed Apr 22, 2009 7:54 am
 
Forum: Cell Biology
Topic: membrane cholesterol
Replies: 4
Views: 798

membrane cholesterol

It's okay, I've figured it out. I just had to focus my searches on endothelial caveolae rather than cholesterol, but it provided in the information I was looking for.

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by ianawhite
Tue Dec 09, 2008 10:03 pm
 
Forum: Cell Biology
Topic: membrane cholesterol
Replies: 4
Views: 798
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