| inborn error of metabolism | A genetic biochemical disorder of a specific enzyme that forms a metabolic block, e.g., phenylketonuria. (05 Mar 2000) |
|---|---|
| inborn errors of metabolism | Term coined by A. Garrod in 1908 applying to heritable disorders of biochemistry. Examples include albinism, cystinuria (a cause of kidney stones) and phenylketonuria (pku) are a few of the hundreds of inborn errors of metabolism. (12 Dec 1998) |
| intermediary metabolism | Enzyme-catalysed processeswithin cells that extract energy from nutrientmolecules and use that energy to construct cellular components. (09 Oct 1997) |
| oxidative metabolism | Respiration in the biochemical sense. (18 Nov 1997) |
| electrolyte metabolism | The chemical changes that various essential minerals (e.g., sodium, potassium, calcium, magnesium) undergo in the tissues. (05 Mar 2000) |
| energy metabolism | Those metabolic reactions whose role is to release or to provide energy. (05 Mar 2000) |
| fat metabolism | Oxidation, decomposition, and synthesis of fats in the tissues. (05 Mar 2000) |
| fructose metabolism, inborn errors | Inherited abnormalities of fructose metabolism, which include three known autosomal recessive types: hepatic fructokinase deficiency (essential fructosuria), hereditary fructose intolerance, and hereditary fructose-1,6-diphosphatase deficiency. Essential fructosuria is a benign asymptomatic metabolic disorder caused by deficiency in fructokinase, leading to decreased conversion of fructose to fructose-1-phosphate and alimentary hyperfructosaemia, but with no clinical dysfunction; may produce a false-positive diabetes test. (12 Dec 1998) |
| aluminum magnesium silicate | An antacid. Synonym: aluminum magnesium silicate. (05 Mar 2000) |
| calcium magnesium-atpase | <enzyme> An enzyme that catalyses the hydrolysis of ATP and is activated by millimolar concentrations of either calcium or magnesium. Unlike calcium-transporting atpase it does not require the second divalent cation for its activity, and is not sensitive to orthovanadate. Registry number: EC 3.6.1.- (12 Dec 1998) |
| calcium magnesium dependent endodeoxyribonuclease | <enzyme> Similar in action but different from dnase i Registry number: EC 3.1.21.- Synonym: ca mg dnase, ca(2+)+mg(2+) dnase, calcium-magnesium endonuclease, ca-mg endonuclease (26 Jun 1999) |
| magnesium | <chemical, element> An essential divalent cation. The major role is as the chelated ion in ATP and presumably other triphosphonucleotides. The magnesium ATP complex is the sole biologically active form of ATP. The other essential role of magnesium is as the central ion of chlorophyll. Cellular concentration is less than 5mM. Serum concentration approximately 1mM. Pharmacologic action: Hypomagnesemia can cause refractory ventricular fibrillation or ventricular tachycardia. Uses: known hypomagnesemic states - suspect hypomagnesmia in alcoholics, chronic disease states, or others with poor nutrition; treatment of choice for Torsade de Pointes. Dose: 1-2 grams IV push for cardiac arrest, over 1 to 2 minutes for Torsades, and over 5 to 60 minutes for acute myocardial infarction. Potential complications: Transient flushing and diaphoresis, sinus bradycardia, hypotension, hyporeflexia and paralysis with overdose. Abbreviation: Mg (15 Mar 2000) |
| magnesium aluminum silicate | An antacid. Synonym: aluminum magnesium silicate. (05 Mar 2000) |
| magnesium bacteriopheophytinate | <microbiology, plant biology> Varieties of chlorophyll (bacteriochlorophylls a, b, c, d, e and g) found in photosynthetic bacteria and differing from plant chlorophyll in the substituents around the tetrapyrrole nucleus of the molecule and in the absorption spectra. (18 Nov 1997) |
| magnesium benzoate | Has been used in gout and rheumatoid arthritis. (05 Mar 2000) |