| 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) |
| magnesium carbonate | Used in gastric and intestinal acidity and as a laxative. (05 Mar 2000) |
| magnesium chelatase | <enzyme> Catalyses the first committed step in chlorophyll biosynthesis by adding magnesium to protoporphyrin ix Registry number: EC 4.99.1- Synonym: mg-chelatase, magnesium-protoporphyrin chelatase (26 Jun 1999) |
| magnesium chloride | <chemical> Magnesium chloride. An inorganic compound consisting of one magnesium and two chloride ions. The compound is used in medicine as a source of magnesium ions, which are essential for many cellular activities. It has also been used as a cathartic and in alloys. Chemical name: Magnesium chloride (MgCl2) (12 Dec 1998) |
| magnesium citrate | Mg3(C6H5O7)2-14H 2O;a laxative; usually administered as an effervescent flavored beverage. (05 Mar 2000) |
| magnesium compounds | Inorganic compounds that contain magnesium as an integral part of the molecule. (12 Dec 1998) |
| magnesium deficiency | Can occur due to inadequate intake or impaired intestinal absorption of magnesium. Low magnesium (hypomagnesaemia) is often associated with low calcium (hypocalcaemia) and low potassium (hypokalaemia). Deficiency of magnesium causes increased irritability of the nervous system with tetany (spasms of the hands and feet, muscular twitching and cramps, spasm of the larynx, etc.). According to the national academy of sciences, the recommended dietary allowances of magnesium are 420 milligrams per day for men and 320 milligrams per day for women. The upper limit of magnesium as supplements is 350 milligrams daily, in addition to the magnesium from food and water. (12 Dec 1998) |
| magnesium excess | Persons with impaired kidney function should be especially careful about their magnesium intake because they can accumulate magnesium, a dangerous situation. According to the national academy of sciences, the recommended dietary allowances of magnesium are 420 milligrams per day for men and 320 milligrams per day for women. The upper limit of magnesium as supplements is 350 milligrams daily, in addition to the magnesium from food and water. (12 Dec 1998) |
| magnesium hydroxide | <chemical> Magnesium hydroxide (mg(oh)2). An inorganic compound that occurs in nature as the mineral brucite. It acts as an antacid with cathartic effects. Pharmacological action: antacids, cathartic. Chemical name: Magnesium hydroxide (Mg(OH)2) (12 Dec 1998) |
| magnesium lactate | A laxative. (05 Mar 2000) |
| magnesium oxide | <chemical> Magnesium oxide (mgo). An inorganic compound that occurs in nature as the mineral periclase. In aqueous media combines quickly with water to form magnesium hydroxide. It is used as an antacid and mild laxative and has many nonmedicinal uses. Pharmacological action: antacids, cathartic. Chemical name: Magnesium oxide (MgO) (12 Dec 1998) |
| magnesium peroxide | Decomposes in water to hydrogen peroxide; used as an ingredient in dentifrices and in antiseptic dusting powder. (05 Mar 2000) |
| 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) |
| potassium magnesium aspartate | <chemical> An intra-extracellular electrolyte exchange agent with a variety of effects. Beneficial in cardiac insufficiency, potentiates the effect of cardiac glycosides by reducing their toxicity, has hypocholesteraemic effects and potentiates the effects of calcium in disturbed calcium metabolism. Synonym: panangin; tromcardin. Chemical name: DL-Aspartic acid, monopotassium salt, mixt. With potassium hydrogen (T-4)-bis(DL-aspartato(2-)-N,O1)magnesate(2-) (12 Dec 1998) |
| deficiency, magnesium | Can occur due to inadequate intake or impaired intestinal absorption of magnesium. Low magnesium (hypomagnesaemia) is often associated with low calcium (hypocalcaemia) and potassium (hypokalaemia) levels. Deficiency of magnesium causes increased irritability of the nervous system with tetany (spasms of the hands and feet, muscular twitching and cramps, spasm of the larynx, etc.). According to the National Academy of Sciences, the Recommended Dietary Allowances of magnesium are 420milligrams per day for men and 320 milligrams per day for women. The upperlimit of magnesium as supplements is 350 milligrams daily, in addition to the magnesium from food and water. (12 Dec 1998) |
| effervescent magnesium citrate | Magnesium carbonate, citric acid, sodium bicarbonate, and sugar, moistened with alcohol, passed through a sieve, and dried to a coarse granular powder; used as a laxative. (05 Mar 2000) |
| effervescent magnesium sulfate | Effervescent Epsom salt; magnesium sulfate, sodium bicarbonate, tartaric acid, and citric acid, moistened, passed through a sieve, and dried to a coarse granular powder; a purgative. (05 Mar 2000) |
| tribasic magnesium phosphate | Mg3(PO4)2-5H2O;tertiary magnesium phosphate, it is used as an antacid but it does not produce systemic alkalization; 1 g is equivalent in neutralizing power to about 0.46 g of sodium bicarbonate. (05 Mar 2000) |