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Metabolism - Wikipedia, the free encyclopedia   (Site not responding. Last check: 2007-10-09) Metabolism (from μεταβολισμος ("metabolismos"), the Greek word for "change", or "overthrow" (Etymonline)), is the biochemical modification of chemical compounds in living organisms and cells. Metabolism usually consists of sequences of enzymatic steps, also called metabolic pathways. Secondary metabolism, metabolic pathways that are not essential for growth, development or reproduction, but that usually have ecological function. en.wikipedia.org /wiki/Metabolism   (417 words)

Search Results for carbohydrate - Encyclopædia Britannica Typically, fruits are high in carbohydrates, although a large range is possible—between 2 and 40 percent, depending on the type of fruit and its maturity. Carbohydrates are absorbed as monosaccharides (simple sugars such as glucose, fructose, and galactose that cannot be further broken down by hydrolysis) or as disaccharides (carbohydrates such as... Carbohydrates are ingested primarily in the form of larger molecules, such as starch (the chief storage form of carbohydrates in plants), from which the smaller sugars eventually are produced by the... www.britannica.com /search?query=carbohydrate&ct=eb&ref=news0704ts   (653 words)

eMedicine - Disorders of Carbohydrate Metabolism : Article by Pieter R Kark, MD, MA, FAAN, FACP   (Site not responding. Last check: 2007-10-09) The remaining disorders of carbohydrate metabolism are the rare inborn errors of metabolism (ie, genetic defects). The acquired disorders of carbohydrate metabolism are fairly common, both in the United States and internationally. If clinical evidence suggests a defect of galactose metabolism, episodes of vomiting follow feedings of milk or formula containing lactose; if galactose levels in the blood or urine are elevated, look for liver damage (ie, elevated ammonia) or renal damage (ie, proteinuria, which may occur 1-2 days after a lactose load and then disappear). www.emedicine.com /neuro/topic679.htm   (10076 words)

carbohydrate on Encyclopedia.com Carbohydrates are important as foods; they supply energy and are used in the production of fats. Pre-exercise carbohydrate and fat ingestion: effects on metabolism and performance. Whole green soybean pasta is low in carbohydrates and higher in fiber than regular pasta. www.encyclopedia.com /html/c1/carbohyd.asp   (888 words)

THE MERCK MANUAL, Sec. 2, Ch. 13, Disorders Of Carbohydrate Metabolism The metabolic processes through which insulin affects the plasma levels of glucose, albumin-bound free fatty acids, and ketones are normally regulated by shifts in the balance between the effects of insulin and the opposing effects of glucagon (in the liver) and the adrenergic autonomic nervous system. About 30% of chlorpropamide is normally excreted in the urine, and the principal hepatic metabolite of acetohexamide is highly active and excreted in urine; both drugs carry an increased risk of prolonged hypoglycemia in patients with impaired renal function and in the elderly. Exchange lists providing information on the carbohydrate, protein, fat, and caloric contents of individual servings are used to translate the dietary prescription into a diet plan, which should contain foods that the patient likes to eat, provided there is no specific reason to exclude a particular food. www.merck.com /pubs/mmanual/section2/chapter13/13a.htm   (6696 words)

ARS | Publication request: Modulation of Carbohydrate Metabolism and Peptide Hormones by Soybean Isoflavones and ...   (Site not responding. Last check: 2007-10-09) Carbohydrate and lipid metabolism are influenced by peptide hormones. We therefore investigated the effect of soybean isoflavones on glucose and triglyceride metabolism and peptide hormones in an animal model of obesity and diabetes. We therefore studied the effects of soybean isoflavones in the presence and absence of probiotics on glucose and triglyceride metabolism and the peptide hormones involved in their metabolism. ars.usda.gov /research/publications/publications.htm?seq_no_115=170007   (567 words)

Bodybuilding.com - Derek Beast Charlebois - Carbohydrate Metabolism! Once in the blood, these carbohydrates, now in the form of monosaccharides, can be put to use. While there is no set RDA for carbohydrates, it is recommended that 40-50% of calories consumed be in the form of carbohydrates. The suggested intake of carbohydrates for athletes is 60% of their caloric intake. www.bodybuilding.com /fun/beast3.htm   (1636 words)

ASPB - Publications - Biochemistry & Molecular Biology of Plants The metabolic activity of a tissue as a whole is determined to a large extent by the enzyme complement of the plastids it contains. Carbohydrate metabolism in the cytosol is connected with plastid metabolism by a series of carriers in the plastid envelope. Certain of these enzymes appear to bypass principal reactions involved in carbohydrate metabolism, although mechanisms for the control of these bypasses have yet to be elucidated. www.aspb.org /publications/biotext/sumrys/ch13.cfm   (386 words)

BCH/PPA 503 | Lecture Twelve Web Notes The purpose of today’s lecture is to discuss the biosynthesis and metabolism of oligo- and polysaccharides, particularly sucrose and starch, and the interaction of key points of carbohydrate metabolism with other major metabolic pathways in plants. Extracellular invertases are a major route for metabolism of sucrose and this is influenced by a number of signals and biotic or abiotic stresses (Fig. While this may be true in the light, the export of assimilate from transient starch turnover in chloroplasts in the dark appears to be predominately in the form of glucose as indicated in these studies. www.uky.edu /~dhild/biochem/12/lect12.html   (1389 words)

Glycolysis The first step in the metabolism of digestible carbohydrate is the conversion of the higher polymers to simpler, soluble forms that can be transported across the intestinal wall and delivered to the tissues. The metabolic result of the phosphorylation of the bifunctional enzyme is that allosteric stimulation of PFK-1 ceases, allosteric inhibition of F-1,6-BPase is eliminated, and net flow of fructose through these two enzymes is gluconeogenic, producing F6P and eventually glucose. Thus, the ability of an individual to metabolize ethanol is dependent upon the capacity of hepatocytes to carry out eother of these 2 shuttles, which in turn is affected by the rate of the TCA cycle in the mitochondria whose rate of function is being impacted by the NADH produced by the AcDH reaction. web.indstate.edu /thcme/mwking/glycolysis.html   (4507 words)

BioCarta - Charting Pathways of Life Glycolysis was one of the first metabolic pathways studied and is one of the best understood, in terms of the enzymes involved, their mechanisms of action, and the regulation of the pathway to meet the needs of the organism and the cell. While the main route of fatty acid metabolism is through beta-oxidation, some minor metabolic pathways such as omega oxidation also contribute to the metabolism of fatty acids and other molecules. Excess amino acids in the body can be used as a source of energy, with their carbon skeleton converted to metabolic intermediates such as acetyl-CoA or intermediates in the Krebs cycle. www.biocarta.com /genes/catMetabolism.asp   (853 words)

Carbohydrate Metabolism There are numerous metabolic pathways, or reactions from beginning to end, which occur in our cells to keep every life process continuing. Glucose is the key food molecule for most organisms, and it is the central substance in carbohydrate metabolism. During digestion, carbohydrates are hydrolyzed to the monosaccharaides glucose, fructose, and galaxies, which are absorbed into the bloodstream through the lining of the small intestine. www.angelfire.com /ak2/chemists/metabolism.html   (700 words)

THE MERCK MANUAL--SECOND HOME EDITION, Carbohydrate Metabolism in Ch. 282, Hereditary Metabolic Disorders The carbohydrates in bread, pasta, rice, and other carbohydrate-containing foods are long chains of simple sugar molecules. Sometimes carbohydrate solutions are given through a stomach tube all night to prevent low blood sugar levels from occurring at night. Galactosemia (a high blood level of galactose) is caused by lack of one of the enzymes necessary for metabolizing galactose, a sugar present in lactose (milk sugar). www.merck.com /mmhe/sec23/ch282/ch282b.html   (1034 words)

carbohydrate metabolism   (Site not responding. Last check: 2007-10-09) The metabolism of the sugars found in our food is discussed in all textbooks and I will not take up all of the details here. Carbohydrate metabolism starting from glucose or galactose proceeds under... Dietary carbohydrate from which humans gain energy enter the body in complex forms, such as... www.1st-in-carbblockers.com /6/carbohydrate-metabolism.html   (261 words)

Carbohydrate and lipid metabolism in pregnancy: normal compared with gestational diabetes mellitus -- Butte 71 (5): ... Carbohydrate metabolism during pregnancy in control subjects and women with gestational diabetes. Metabolism of urea and glucose in normal and diabetic pregnancy. Metabolic effects of a 1200-kcal diet in obese pregnant women with gestational diabetes. www.ajcn.org /cgi/content/full/71/5/1256S   (3579 words)

Overview Metabolism Carbohydrate metabolism begins with digestion in the small intestine where monosaccharides are absorbed into the blood stream. Insulin stimulates the transfer of glucose into the cells, especially in the liver and muscles, although other organs are also able to metabolize glucose. In the liver and muscles, most of the glucose is changed into glycogen by the process of glycogenesis (anabolism). www.elmhurst.edu /~chm/vchembook/600glycolysis.html   (307 words)

Carbohydrate metabolism -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-09) Carbohydrate metabolism -- Facts, Info, and Encyclopedia article The smooth (additional info and facts about endoplasmic reticulum) endoplasmic reticulum is responsible for some carbohydrate metabolism. So to remedy this, an (Any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions) enzyme found in the membrane of the smooth endoplasmic reticulum can remove the phosphate, allowing pure glucose to be released. www.absoluteastronomy.com /encyclopedia/c/ca/carbohydrate_metabolism.htm   (68 words)

Analysis of carbohydrate metabolism enzymes and cellular contents of sugars and proteins during spruce somatic ... Analysis of carbohydrate metabolism enzymes and cellular contents of sugars and proteins during spruce somatic embryogenesis suggests a regulatory role of exogenous sucrose in embryo development -- Iraqi and Tremblay 52 (365): 2301 -- Journal of Experimental Botany Analysis of carbohydrate metabolism enzymes and cellular contents of sugars and proteins during spruce somatic embryogenesis suggests a regulatory role of exogenous sucrose in embryo development on carbohydrate metabolism in Scots pine (Pinus sylvestris) and Norway spruce (Picea abies). jxb.oxfordjournals.org /cgi/content/full/52/365/2301   (4650 words)

Regulation of exercise carbohydrate metabolism by estrogen and progesterone in women -- D'Eon et al. 283 (5): 1046 -- ... Regulation of exercise carbohydrate metabolism by estrogen and progesterone in women -- D'Eon et al. Total carbohydrate oxidation was not different from baseline in those studies, however. Metabolic actions of estradiol: significance for acute and chronic exercise responses. ajpendo.physiology.org /cgi/content/full/283/5/E1046   (5625 words)

Fatty acid kinetics and carbohydrate metabolism during electrical exercise in spinal cord-injured humans -- Kjær ... Fatty acid kinetics and carbohydrate metabolism during electrical exercise in spinal cord-injured humans -- Kjær et al. Fatty acid kinetics and carbohydrate metabolism during electrical exercise in spinal cord-injured humans A relation between non-esterified fatty acids in plasma and the metabolism of glucose. ajpregu.physiology.org /cgi/content/full/281/5/R1492   (3937 words)

Burman, Holton and Pennock (1980) Inherited disorders of carbohydrate metabolism: Monograph based upon proceedings of ... Burman, Holton and Pennock (1980) Inherited disorders of carbohydrate metabolism: Monograph based upon proceedings of the sixteenth symposium of the Society for the Study of Inborn Errors of Metabolism Inherited disorders of carbohydrate metabolism: Monograph based upon proceedings of the sixteenth symposium of the Society for the Study of Inborn Errors of Metabolism Carbohydrates; Metabolism, Inborn errors of; Carbohydrate metabolism, Inborn errors; Metabolism; Disorders; Congresses www.getcited.org /?PUB=101970736&showStat=Ratings   (130 words)

Carbohydrate Metabolism   (Site not responding. Last check: 2007-10-09) But, taken in excess, carbohydrates can present a myriad or health problems such as diabetes, high blood pressure and many others. It is also important that the body and actually break down the carbohydrates we consume. Diaplex is formulated to support the healthy function of the pancreas and the metabolism of carbohydrates and fats. www.becomehealthynow.com /index.php?topic=suppscarbs   (789 words)

Carbohydrate Metabolism   (Site not responding. Last check: 2007-10-09)   Expression patterns of each fructokinase suggested that one may be involved in general fructose metabolism and the second fructokinase may be important in more specialized situations.   We considered introducing an alternative metabolic pathway for altering fructose metabolism into fruit to provide another means of perturbing the glucose and fructose content. Analysis of carbohydrate assimilation in a wild species. veghome.ucdavis.edu /faculty/bennett/lab/research3.html   (515 words)

Chapter 11   (Site not responding. Last check: 2007-10-09) Note: The metabolism can not stop here becaurs NADH must regenerate to NAD. Muscle (exercise and hormone stimulation carbon is metabolized in the muscle to lactate or oxidized) Liver (starvation and diabetes - carbon leaves the liver as glucose and travels to tissues such as the brain which needs sugar for metabolism. opbs.okstate.edu /~Blair/Bioch2344/Chapter11/Chapter11.htm   (1185 words)

Carbohydrate ... Protein - compare prices, reviews and buy at NexTag - Price - Review INTAKELEAN is a high protein, low carbohydrate Lean Meal Option for those who demand healthy choices for their low carb lifestyle. The Natural is a healthy source of protein, carbohydrates and fats that taste great. The first high-protein, low carbohydrate, low-glycemic bar in the world. nextag.com /serv/main/buyer/OutPDir.jsp?search=carbohydrate+...+protein   (417 words)

Carbohydrate Metabolism in Plants, the Pathways and their Control   (Site not responding. Last check: 2007-10-09) Carbohydrate Metabolism in Plants, the Pathways and their Control Sucrose and the metabolism of fructans in leaves Any changes to the Final Circular will be posted on:- http://www.agnic.org/mtg/1998/cmp.html Cancellation: Participants cancelling after May 1st are not guaranteed to receive back more than 40% of the registration fee. laurel.nal.usda.gov:8080 /agnic/mtg/1998/cmp.html   (558 words)

Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link. The action of various so-called stress agents on carbohydrate metabolism is quite specific. Even with those stresses that produce marked changes in the carbohydrate levels of various tissues such as fasting, whole-body x irradiation, or hypoxia, the actual changes produced are characteristic of the agent or procedure employed. www.osti.gov /energycitations/product.biblio.jsp?osti_id=4190326   (124 words)

The Mosby Medical Encyclopedia: carbohydrate metabolism@ HighBeam Research   (Site not responding. Last check: 2007-10-09) The Mosby Medical Encyclopedia: carbohydrate metabolism@ HighBeam Research Search for more information on HighBeam Research for. carbohydrate metabolism, the sum of the building up (anabolism) and breaking down (catabolism) of carbohydrates in the body. highbeam.com /library/doc0.asp?DOCID=1P1:28728754&...   (137 words)

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