Glucose (redirected from Glycose)

glucose /glu·cose/ (gloo´kos)

1. a six-carbon aldose occurring as the d- form and found as a free monosaccharide in fruits and other plants or combined in glucosides and di-, oligo-, and polysaccharides. It is the end product of carbohydrate metabolism, and is the chief source of energy for living organisms, its utilization being controlled by insulin. Excess glucose is converted to glycogen and stored in the liver and muscles for use as needed and, beyond that, is converted to fat and stored as adipose tissue. Glucose appears in the urine in diabetes mellitus. In pharmaceuticals, called dextrose.

2. liquid g.

---

liquid glucose  a thick, sweet, syrupy liquid obtained by incomplete hydrolysis of starch and consisting chiefly of dextrose, with dextrins, maltose, and water; used as a pharmaceutic aid.

glucose 1-phosphate  an intermediate in carbohydrate metabolism.

glucose 6-phosphate  an intermediate in carbohydrate metabolism.

---

glu·cose (glks)

n.

A monosaccharide sugar in the blood that serves as the major energy source of the body; it occurs in most plant and animal tissue. Also called blood sugar.

---

Glucose

A simple sugar produced when carbohydrates are broken down in the small intestine. It is the primary source of energy for the body. Various tests that measure blood glucose levels are used in diagnosing insulin resistance.

Mentioned in: Antidiabetic Drugs, Antimalarial Drugs, Diabetic Ketoacidosis, Diabetic Neuropathy, Galactosemia, Gastroenteritis, Gestational Diabetes, Glycogen Storage Diseases, Glycosylated Hemoglobin Test, Insulin Resistance, Lactose Intolerance, Wilson Disease

---

glucose (gloo´kōs),

n a six-carbon (hexose) sugar that is the principal sugar in blood and serves as a major metabolic source of energy.

glucose, casual plasma,

n the amount of glucose in the blood at any time, unrelated to eating.

glucose, fasting plasma (FPG),

n a self-administered test of blood glucose levels for diabetes patients. The blood is tested after at least 8 hours of fasting. If results of the test are consistently at or above 126 mg/dL, the patient is commonly diagnosed with diabetes mellitus.

glucose meter,

n an electronic device used to measure blood glucose levels that can be used by a patient at home. The device provides an accurate reading of blood glucose level with only a drop of blood from a pricked finger.

glucose oxidase,

n an antibacterial flavoprotein enzyme obtained from
P. notatum and other fungi. It is antibacterial in the presence of glucose and oxygen.

glucose, postprandial plasma,

n the level of glucose in the blood plasma based on a sample of blood taken after ingesting a meal; used to diagnose diabetes.

glucose tolerance, impaired,

n one category of oral glucose tolerance test results. The diagnosis is not necessarily indicative of diabetes, but the patient may be at risk of diabetes mellitus and heart disease.

glucose tolerance test,

n a metabolic test that measures the ability of the body to metabolize carbohydrates. A patient is administered a standard dose of glucose, and blood and urine samples are measured for glucose levels at periodic intervals following administration. It is most often used to assist in the diagnosis of diabetes mellitus.

---

glucose, d-glucose

a simple sugar, a monosaccharide in certain foodstuffs, especially fruit, and in normal blood; the major source of energy for many living organisms. See also dextrose.

Glucose, whose molecular formula is C₆H₁₂O₆, is the end product of carbohydrate digestion; other monosaccharides (fructose and galactose) are largely converted into glucose. Glucose is the only monosaccharide present in significant amounts in the body fluids. The oxidation of glucose produces energy for the body cells; the rate of metabolism is controlled by a number of hormones the most important of which are insulin and glucagon. Glucose that is not needed for energy is stored in the form of glycogen as a source of potential energy, readily available when needed. Most of the glycogen is stored in the liver and muscle cells. When these and other body cells are saturated with glycogen, the excess glucose is converted into fat and stored as adipose tissue. See also hypoglycemia, hyperglycemia.

---

[1-¹⁴C]-glucose

radioactive glucose used experimentally.

liquid glucose

a thick syrupy, sweet liquid, consisting chiefly of dextrose, with dextrins, maltose and water, obtained by incomplete hydrolysis of starch; used as a flavoring agent, as a food, and in the treatment of dehydration.

glucose-1-phosphate

an intermediate in carbohydrate metabolism.

glucose-6-phosphatase

a liver (and kidney) enzyme that irreversibly cleaves glucose-6-phosphate to free glucose and phosphate; important in glucose homeostasis.

glucose-6-phosphate

an intermediate in carbohydrate metabolism.

glucose-6-phosphate dehydrogenase (G6PD)

a regulatory enzyme in the metabolism of glucose-6-phosphate. A deficiency of the enzyme in the erythrocyte results in a hemolytic anemia; an inherited abnormality in humans, rats and mice and acquired in animals in phenothiazine toxicity and ingestion of kale.

glucose phosphate isomerase

converts glucose-6-phosphate to fructose-6-phosphate and the reverse reaction.

glucose suppression test

suppression of blood levels of growth hormone by the intravenous administration of glucose is used to diagnose acromegaly.

glucose tolerance factor (GTF)

a naturally occurring substance containing chromium which potentiates the effects of insulin.

glucose tolerance test

a test of the body's ability to utilize carbohydrates. It is often used to detect abnormalities of carbohydrate metabolism such as occur in diabetes mellitus, hypoglycemia, and liver and adrenocortical dysfunction. If administered orally, it may also be used to assess the absorptive capacity of the small intestine.

---

glucose Biochemistry The hexose sugar that is the main source of energy in mammals. See Random glucose.