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 ?
The data for the mechanical properties of the tested materials, the in vitro degradation of coated and non-coated magnesium alloys, and cell proliferation on the coated and non-coated magnesium alloys were presented as mean [+ or -] standard deviation (SD).
For the temperature-sensitive magnesium alloy substrates, cold spray might be an appropriate technique for fabricating protective coatings.
Tremblay, "Corrosion behaviour of AZ and ZA magnesium alloys in alkaline chloride media," International Journal of Corrosion, vol.
John, "Corrosion of magnesium alloys in commercial engine coolants," Materials and Corrosion, vol.
Basista, "Recent advances in research on magnesium alloys and magnesium-calcium phosphate composites as biodegradable implant materials," Journal of Biomaterials Applications, vol.
Most of the magnesium alloys have low cold ductility, so there is a significant hardening of the worn surface even using lower loads [4].
Spray Forming of Magnesium Alloys and Composites Powder Metall., 40: 126.
* 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.
Haverich, "Biocorrosion of magnesium alloys: a new principle in cardiovascular implant technology?" Heart, vol.
Elektron[R] 43 and Elektron[R] 21 are the only magnesium alloys that have already met the cited performance requirements by passing extensive flammability tests conducted by the FAA, including seven full-scale aircraft interior tests.
Apart from alloying, surface modifications to improve the corrosion properties of magnesium alloys, such as micro-arc oxidation (MAO), ion implantation, and plasma anodization, have been investigated (21).