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Valine amino acid information page
Valine is an amino acid obtained by hydrolysis of proteins and was first isolated by the German chemist Emil Fischer in 1901 from casein and is not only an essential amino acid but is also a branched-chain amino acid (the others are isoleucine and leucine) found in high concentration in the muscles.
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It has a stimulating effect and is needed for muscle metabolism, repair and growth of tissue and maintaining the nitrogen balance in the body.
Since it is a branched-chain amino acid, it can be used as an energy source in the muscles, and in doing so preserves the use of glucose.
Many amino acids become deficient with drug addiction, and here it also plays an important role and there are indications that it may also be beneficial in treating or reversing hepatic encephalopathy, or alcohol related brain damage, as well as degenerative neurological conditions.
Maple syrup urine disease (MSUD) is caused by the inability to metabolize leucine, isoleucine, and valine. The disease is so named because urine from affected people smells like maple syrup. A deficiency may affect the myelin covering of the nerves.
Also see Isoleucine and Leucine and also look at Branched-chain amino acids.
The dosage listed is the Recommended Daily Allowance (RDA), but be aware that this dosage is the minimum that you require per day, to ward off serious deficiency of this particular nutrient. In the therapeutic use of this nutrient, the dosage is usually increased considerably, but the toxicity level must be kept in mind.
Very high levels of valine can cause symptoms such as a crawling sensation on the skin, as well as hallucinations. Individuals with kidney or liver disease should be careful in consuming high intakes of amino acids without consulting their doctor.
The three branched-chain amino acids should always be taken in balance.
Valine is often used by bodybuilders, (in conjunction with leucine and isoleucine), to promote muscle growth, tissue repair and energizer, although little scientific evidence supports these claims. Studies have however shown that these three substances might be useful in restoring muscle mass in people with liver disease, injuries, or who have undergone surgery.
Good sources for this nutrient include dairy, meat, grain, mushrooms, soy and peanuts.
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