magnesium

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magnesium

 (Mg) [mag-ne´ze-um]
a chemical element, atomic number 12, atomic weight 24.312. (See Appendix 6.) Its salts are essential in nutrition, being required for the activity of many enzymes, especially those concerned with oxidative phosphorylation. It is found in the intra- and extracellular fluids and is excreted in urine and feces. The normal serum level is approximately 2 mEq/L. Magnesium deficiency causes irritability of the nervous system with tetany, vasodilation, convulsions, tremors, depression, and psychotic behavior.
Homeostasis of magnesium in extracellular fluids. The normal serum magnesium level is regulated by intestinal and renal function. Most of the body's magnesium is stored in bones, muscle, and soft tissue. From Malarkey and McMorrow, 2000.
magnesium carbonate an antacid.
magnesium chloride an electrolyte replenisher and a pharmaceutic necessity for hemodialysis and peritoneal dialysis fluids.
magnesium citrate a saline laxative used for bowel evacuation before diagnostic procedures or surgery of the colon; administered orally.
magnesium hydroxide an antacid and cathartic.
magnesium oxide an antacid and a sorbent in pharmaceutical preparations; called also magnesia.
magnesium salicylate see salicylate.
magnesium silicate MgSiO3, a silicate salt of magnesium; the most common hydrated forms found in nature are asbestos and talc.
magnesium sulfate Epsom salt; an anticonvulsant and electrolyte replenisher, also used as a laxative and local antiinflammatory.
magnesium trisilicate a combination of magnesium oxide and silicon dioxide with varying proportions of water; used as a gastric antacid.

mag·ne·si·um (Mg),

(mag-nē'zē-ŭm),
An alkaline earth element, atomic no. 12, atomic wt. 24.3050, which oxidizes to magnesia; a bioelement, many salts have clinical applications.
[Mod. L. fr. G. Magnēsia, a region in Thessaly in Greece]

magnesium

An alkaline earth element (atomic number 12; atomic weight 24.3) which is an essential mineral required for bone and tooth formation, nerve conduction and muscle contraction; it is required by many enzymes involved in carbohydrate, protein and nucleic acid metabolism. Magnesium is present in almonds, apples, dairy products, corn, figs, fresh leafy greens, legumes, nuts, seafood, seeds, soybeans, wheat germ and whole grains. Magnesium may be useful in treating anxiety, asthma and cardiovascular disease; it is thought to prevent blood clots, raise HDL-cholesterol, lower LDL-cholesterol, reduce arrhythmias and blood pressure, and to help with depression, fatigue, hyperactivity and migraines.

magnesium

Metabolism An alkaline earth–atomic number 12; atomic weight 24.3–intracellular cation and essential mineral required for bone and tooth formation; Mg2+ is bound to ATP, plays a pivotal role in neuromuscular activity, nerve conduction and signaling, muscle contraction; Mg2+ is a cofactor in enzymatic reactions in carbohydrate, protein, and nucleic acid metabolism, and is linked to the electrochemical properties of living systems ↑ in Renal failure, Addison's disease, magnesium infusion ↓ in DM, neuromuscular disease, ↑ Ca2+, ↑ K+, malabsorption syndromes, hyperparathyroidism. See Hypermagnesemia, Hypomagnesemia, Minerals. Cf Manganese.

mag·ne·si·um

(mag-nē'zē-ŭm)
An alkaline earth element, atomic no. 12, atomic wt. 24.3050, which oxidizes to magnesia; a bioelement; many salts have clinical applications.
[Mod. L. fr. G. Magnēsia, a region in Thessaly in Greece]

mag·ne·si·um

(mag-nē'zē-ŭm)
An alkaline earth element, which oxidizes to magnesia; a bioelement, many salts have clinical applications.
[Mod. L. fr. G. Magnēsia, a region in Thessaly in Greece]

Patient discussion about magnesium

Q. What's the best way to get more Magnesium in my diet (not pill supplements)? I am 28 years old and I am having several health issues. I am very much sensitive to noise and could not sleep even if there is a small sound. It really puts me down and I just cannot go in traffic. I get nervous if I hear a horn or siren. I do panic if I see few vehicles overtake mine and I am undergoing great stress. I am confused even while looking at menu card in the restaurant and I am feeling that my muscles are weak. I did several researches and even consulted few doctors. I did recently discover that magnesium deficiency may be causing/aggravating my situation. What's the best way to get more Magnesium in my diet (not pill supplements)?

A. Green vegetables such as spinach are good sources of magnesium because the center of the chlorophyll molecule (which gives green vegetables their color) contains magnesium. Some beans, peas, nuts, seeds, and whole, unrefined grains are also good sources of magnesium.

More discussions about magnesium
References in periodicals archive ?
Therefore, the flexibility achieved with PPC coating may allow a magnesium alloy implant to better resist breakage and corrosion during deformation and usage.
Rodrigo et al., "Corrosion behaviour of thermally sprayed Al and Al/SiCp composite coatings on ZE41 magnesium alloy in chloride medium," Corrosion Science, vol.
Peng, "Fatigue characteristics of sand-cast AZ91D magnesium alloy," Journal of Magnesium and Alloys, vol.
Fang, "Formation of phosphate/permanganate conversion coating on AZ31 magnesium alloy," Journal of The Electrochemical Society, vol.
Chu, "Improved corrosion resistance and cytocompatibility of magnesium alloy by two-stage cooling in thermal treatment," Corrosion Science, vol.
The microstructure of as-cast AZ31B magnesium alloy was observed by SEM (Fig.
Damping capacity of Mg-MMCs was higher than that of AZ91 magnesium alloy, because of it's the high dislocation density in Mg-MMCs caused by the nominal addition of TiC particulates.
* Galvanic corrosion: Compared with other metals, the standard electrode potential of magnesium is low, when the magnesium in contact with other metals, usually as the anode react cathode is direct contact and magnesium metal, or other metal magnesium alloy contains an internal, magnesium alloy on galvanic corrosion sensitivity than strong, so for the magnesium alloy the main forms of corrosion is galvanic corrosion.
However, it is made of a completely bioabsorbable magnesium alloy (MgYREZr).
(30,31) In this article, the applicability of LEIS to the electrochemical processes related to the corrosion resistance of a defective PANI coating on magnesium alloy was explored.
Influence of cerium on the microstructure, mechanical properties and corrosion resistance of magnesium alloy. Mater Sci Eng A 2006; 433: 208-215, doi: 10.1016/j.msea.2006.06.109.