glycogen

Home > ... > Science and Technology > Chemistry > Organic Chemistry > ...

Essential
reading

Compare
side-by-side

World Encyclopedia

The Columbia Encyclopedia, Sixth Edition

glycogen

glycogen , starchlike polysaccharide (see carbohydrate ) that is found in the liver and muscles of humans and the higher animals and in the cells of the lower animals. Chemically it is a highly branched condensation polymer of glucose ; it is readily hydrolyzed to glucose. Glycogen is formed by the liver from glucose in the bloodstream and is stored in the liver; conversion of glucose to glycogen (glycogenesis) and hydrolysis of glycogen to glucose (glycogenolysis) together are the usual mechanism for maintenance of normal levels of blood sugar. Glycogen is also produced by and stored in muscle cells; during short periods of strenuous activity, energy is released in the muscles by direct conversion of glycogen to lactic acid. During normal activity, energy is released by metabolic oxidation of glucose to lactic acid.

Create a link to this page

Copy and paste this link tag into your Web page or blog:

<a href="http://www.encyclopedia.com/topic/.aspx#1E1-glycogen" title="Facts and informations about glycogen">glycogen</a>

Give this article a thumbs-up on StumbleUpon

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

"glycogen." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 6 Jul. 2009 <http://www.encyclopedia.com>.

"glycogen." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (July 6, 2009). http://www.encyclopedia.com/doc/1E1-glycogen.html

"glycogen." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved July 06, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-glycogen.html

Learn more about citation styles

glycogen

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

glycogen Carbohydrate stored in the body, principally by the liver and muscles. Glycogen is a polymer of glucose. When the body needs energy, it breaks down glycogen into glucose. See also respiration

Create a link to this page

Copy and paste this link tag into your Web page or blog:

<a href="http://www.encyclopedia.com/topic/.aspx#1O142-glycogen" title="Facts and informations about glycogen">glycogen</a>

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

"glycogen." World Encyclopedia. 2005. Encyclopedia.com. 6 Jul. 2009 <http://www.encyclopedia.com>.

"glycogen." World Encyclopedia. 2005. Encyclopedia.com. (July 6, 2009). http://www.encyclopedia.com/doc/1O142-glycogen.html

"glycogen." World Encyclopedia. 2005. Retrieved July 06, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-glycogen.html

Learn more about citation styles

Related entries from encyclopedias, dictionaries and thesauruses

Rate these entries|See all related entries

Free newspaper and magazine articles

	FAT REPLACEMENT OF THE GLYCOGEN IN THE LIVER AS A CAUSE OF DEATH(). Magazine article from: Archives of Pathology & Laboratory Medicine; 1/1/2001*
	Type IV glycogen storage disease. (Images in Pathology).(Brief Article) Magazine article from: Archives of Pathology & Laboratory Medicine; 5/1/2002
	Common spices help inhibit AGE.(IN THE NEWS)(advanced glycogen end-products)(Brief article)(Clinical report) Magazine article from: Life Extension; 11/1/2008

Facts and information from other sites

Related articles from newspapers, magazines, and more

	FAT REPLACEMENT OF THE GLYCOGEN IN THE LIVER AS A CAUSE OF DEATH(). Magazine article from: Archives of Pathology & Laboratory Medicine; 1/1/2001; ; 700+ words* ; ...changes in the liver has long been recognized. Rosenfeld (1) furnished rather conclusive evidence of this relation by withholding glycogen-forming foods from the diet of animals fed with alcohol and observing fatty changes of the liver as a sequence. In discussions... Read more
	Type IV glycogen storage disease. (Images in Pathology).(Brief Article) Magazine article from: Archives of Pathology & Laboratory Medicine; 5/1/2002; ; 700+ words ; ...rarefied fibrillar material interspersed with microfoci of normal glycogen (Figure, D). A diagnosis of glycogen storage disease, type IV, was rendered. [FIGURES A-D OMITTED] Type IV glycogen storage disease (type IV GSD), also known as Andersen disease... Read more
	Common spices help inhibit AGE.(IN THE NEWS)(advanced glycogen end-products)(Brief article)(Clinical report) Magazine article from: Life Extension; 11/1/2008; ; 201 words ; The Journal of Medicinal Food published a report by researchers at the University of Georgia which revealed that common spices not only confer antioxidant benefits, but offer significant protection against the formation of advanced glycation end-products (AGEs). * AGE compounds activate the immune Read more
	Fat Replacement of the Glycogen in the Liver as a Cause of Death Seventy-five Years Later. Magazine article from: Archives of Pathology & Laboratory Medicine; 1/1/2001; ; 700+ words ; The Archives of Pathology & Laboratory Medicine made its debut in January of 1926 as the official pathology journal of the American Medical Association. The College of American Pathologists has published the journal since 1995, in cooperation with the American Medical Association. Many of the Read more
	OSI INITIATES PHASE I CLINICAL TRIAL OF PSN357. Newspaper article from: Worldwide Biotech; 9/1/2005; 700+ words ; ...diabetes and obesity team, PSN357 is a glycogen phosphorylase inhibitor (GPI), which...lower blood glucose levels by preventing glycogen breakdown to glucose in the liver. PSN357...ability in pre-clinical studies to inhibit glycogen phosphorylase and reduce blood glucose... Read more
	Reproductive cycle of the subcrenated ark shell Scapharca kagoshimensis (Tokunaga, 1906) in Ariake Bay, Japan.(Abstract) Magazine article from: Journal of Shellfish Research; 12/1/2008; ; 700+ words ; ABSTRACT The reproductive biology and glycogen content of a subcrenated ark shell Scapharca...declined to 18.9 during June and July. Glycogen content gradually decreased from 43.1...relationship between gonad development and glycogen content. KEY WORDS: subcrenated ark shell... Read more
	Seasonal changes in biochemical composition of the clam, Eurhomalea exalbida (bivalvia: veneridae), from the beagle channel, Argentina. Magazine article from: Journal of Shellfish Research; 4/1/2004; ; 700+ words ; ...in biochemical composition (protein, glycogen, and lipid content) of different organs...gamete maturation. The percentage of glycogen content for FV, M. and GMS showed low...relative content of protein, lipid, and glycogen of the adult specimens vary seasonally... Read more
	Extreme tolerance to anoxia in the Lucinoma aequizonata symbiosis.(Report) Magazine article from: Journal of Shellfish Research; 3/1/2008; ; 700+ words ; ...50% mortality). The total quantity of glycogen in a specimen does not decrease significantly...after long-term anoxia (10.5 too). Common glycogen-derived anaerobic products (opines, lactate...because it slows down the consumption of glycogen, the animal's only known long-term energy... Read more
	Effects of starvation on energy reserves in young juveniles of abalone Haliotis discus hannai Ino. Magazine article from: Journal of Shellfish Research; 12/15/2004; ; 700+ words ; ...tissue protein, lipid, total carbohydrate, glycogen and ash contents, as well as the ratio...decreased significantly, whereas the glycogen level remained constant, and ash content...studied the effect of starvation on tissue glycogen in the northern abalone, Haliotis kamtschatkana... Read more
	XCELLSYZ IDENTIFIES MECHANISM OF ACTION OF XD4241 COMPOUND. Newspaper article from: Worldwide Biotech; 8/1/2003; 378 words ; ...the XD4241 has been identified as Glycogen Synthase Kinase-3 (GSK3) a key enzyme involved in the regulation of glycogen metabolism. Prof. Peter Shepherd...novel drug screening capabilities Glycogen synthase kinase (GSK3) regulates glycogen... Read more