| ECPOG | electrochemical potential gradient |
|---|---|
| GE | gastric empyting; gastroemotional; gastroenteritis; gastroenterology; gastroenterostomy; gastroesoph... |
| GEPG | gastroesophageal pressure gradient |
| GGE | generalized glandular enlargement; gradient gel electrophoresis |
| GMN | gradient moment nulling |
| density gradient centrifugation | <technique> High-speed centrifugation inwhich molecules float at a point wheretheir density equals that in a gradient of cesium chloride or sucrose. (12 Jan 1998) |
|---|---|
| systolic gradient | The difference in pressure during systole between two communicating cardiovascular chambers, e.g., between the left ventricle and aorta in aortic stenosis. (05 Mar 2000) |
| electrochemical gradient | A measure of the tendency of an ion to move passively from one point to another, taking into consideration the differences in its concentration and in the electrical potentials between the two points; commonly expressed as the additional voltage needed to achieve equilibrium. (05 Mar 2000) |
| ficoll gradient | A density gradient of ficoll (synthetic sucrose polymer) in solution, where concentration of the ficoll varies continuously through the solution. It is often used to separate different types of cells from each other during the process of sedimentation. (09 Oct 1997) |
| field gradient | In magnetic resonance imaging, a magnetic field that varies with location, superimposed on the uniform field of the magnet, to alter the resonant frequency of nuclei and allow recovery of their spatial position. Synonym: field gradient. (05 Mar 2000) |
| basal metabolic rate | <biochemistry, biology> The metabolic rate as measured under basal conditions: 12 hours after eating, after a restful sleep, no exercise or activity preceding test, elimination of emotional excitement and occurring in a comfortable temperature. Acronym: BMR (15 Nov 1997) |
| brain diseases, metabolic | Metabolic disorders which lead to pathological changes and/or functional deviations of the brain. (12 Dec 1998) |
| rate, basal metabolic | A measure of the rate of metabolism. For example, someone with an overly active thyroid will have an elevated basal metabolic rate. (12 Dec 1998) |
| metabolic | 1. <biology> Of or pertaining to metamorphosis; pertaining to, or involving, change. 2. <physiology> Of or pertaining to metabolism; as, metabolic activity; metabolic force. Source: Websters Dictionary (01 Mar 1998) |
| metabolic acidosis | <biochemistry> A metabolic derangement of acid-base balance where the blood pH is abnormally low. Causes include haemorrhagic shock, cardiogenic shock, severe dehydration, sepsis, toxic ingestion (for example isopropyl alcohol, methanol), alcoholic ketoacidosis, lactic acidosis, renal failure and diabetic ketoacidosis. Respiratory acidosis will occur if the lungs are not ventilating properly. (27 Jun 1999) |
| metabolic alkalosis | <biochemistry> A metabolic derangement where the pH of the blood is abnormally high (basic). This condition may result from hyperventilation, the use of a particular drug, excessive vomiting or dehydration (contraction alkalosis). (27 Jun 1999) |
| metabolic burst | <biochemistry> Response of phagocytes to particles (particularly if opsonise d) and to agonists such as formyl peptides and phorbol esters, an enhanced uptake of oxygen leads to the production, by an NADH dependent system, of hydrogen peroxide, superoxide anions and hydroxyl radicals, all of which play a part in bactericidal activity. Defects in the metabolic burst, as in chronic granulomatous disease, predispose to infection particularly with catalase positive bacteria and are usually fatal in childhood. (27 Jun 1999) |
| metabolic calculus | A stone, usually a renal stone, caused by a metabolic abnormality resulting in increased excretion of a substance of low solubility in urine, such as urate or cystine. (05 Mar 2000) |
| metabolic clearance rate | Volume of biological fluid completely cleared of drug metabolites as measured in unit time. Elimination occurs as a result of metabolic processes in the kidney, liver, saliva, sweat, intestine, heart, brain, or other site. (12 Dec 1998) |
| metabolic coma | Coma resulting from diffuse failure of neuronal metabolism, caused by such abnormalities as intrinsic disorders of neuron or glial cell metabolism, or extracerebral disorders that produce intoxication or electrolyte imbalances. (05 Mar 2000) |