glycogen

Definitions

  • WordNet 3.6
    • n glycogen one form in which body fuel is stored; stored primarily in the liver and broken down into glucose when needed by the body
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Webster's Revised Unabridged Dictionary
    • n Glycogen (Physiol. Chem) A white, amorphous, tasteless substance resembling starch, soluble in water to an opalescent fluid. It is found abundantly in the liver of most animals, and in small quantity in other organs and tissues, particularly in the embryo. It is quickly changed into sugar when boiled with dilute sulphuric or hydrochloric acid, and also by the action of amylolytic ferments.
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Century Dictionary and Cyclopedia
    • n glycogen A substance, C6H10O5, belonging to the carbohydrates. When pure it is a white, amorphous, tasteless powder, insoluble in alcohol, soluble in water, and converted by boiling with acids into dextrose. Diastase converts it into dextrine, maltose, and dextrose. Iodine gives it a reddish-brown color. Glycogen is found in many animal tissues, both of vertebrates and invertebrates, as well as in certain fungi. It is especially abundant in the liver. It is largely if not wholly derived from the carbohydrates of the food, and appears to be a reserve material deposited in the liver, which is converted as required into sugar and so enters the circulation. Also called animal starch.
    • n glycogen In mycology, same as epiplasm.
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Chambers's Twentieth Century Dictionary
    • n Glycogen glī′kō-jen animal starch, a substance first discovered by Claude Bernard in the human liver—when pure, a white, amorphous, tasteless powder, insoluble in alcohol.
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Etymology

Webster's Revised Unabridged Dictionary
Gr. sweet + -gen,: cf. F. glycogène,
Chambers's Twentieth Century Dictionary
Formed from Gr. glykys, sweet, genēs, producing.

Usage

In literature:

Thus we have animal starch, or glycogen, stored up in the liver.
"A Practical Physiology" by Albert F. Blaisdell
In the soluble form it resembles glycogen.
"Researches on Cellulose" by C. F. Cross
In other words, it is the production of glycogen which will regulate the consumption by the nerves and muscles.
"Creative Evolution" by Henri Bergson
In other forms a substance (probably glycogen or amylo-dextrin) which turns brown with iodine has been observed.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2" by Various
For instance, gonorrhoeal pus always shews a considerable glycogen reaction of the pus cells.
"Histology of the Blood" by Paul Ehrlich
The storage of glycogen in the human body depends largely upon the mode of life and upon the diet.
"Dietetics for Nurses" by Fairfax T. Proudfit
The glycogen found in yeasts is identical with that found in animal tissues.
"The Chemistry of Plant Life" by Roscoe Wilfred Thatcher
Passage of foods into blood, function of liver, glycogen.
"A Civic Biology" by George William Hunter
These deposits, referred to as a "chemical lesion," result from an accumulation of glycogen.
"Significant Achievements in Space Bioscience 1958-1964" by National Aeronautics and Space Administration
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In news:

While you're sleeping, your body loses glycogen.
After a few minutes of exercise, carbohydrates stores (which are stored in the muscle as glycogen) are tapped, replenishing depleted blood glucose and restoring energy levels.
We've even spotted Baked Sweet Potatoes there as well, which would give you even more nutrition for your glycogen buck.
Traditional thinking held that since our bodies store only about 20 miles worth of glycogen, some of the race had to be run at a "moderate" pace to enable the body to switch to metabolized fat as fuel.
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