thiamin


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Related to thiamin: riboflavin, folate

thiamine

 [thi´ah-min]
vitamin B1, a component of the B complex group of vitamins, found in various foodstuffs and present in the free state in blood plasma and cerebrospinal fluid. Deficiency results in neurological symptoms, cardiovascular dysfunction, edema, and reduced intestinal motility. See also vitamin.

thi·a·min

(thī'ă-min),
A heat-labile and water-soluble vitamin contained in milk, yeast, and in the germ and husk of grains; also artificially synthesized; essential for growth; a deficiency of thiamin is associated with beriberi and Wernicke-Korsakoff syndrome.
[thia- + vitamin]

thiamin

A water-soluble B vitamin that is a necessary cofactor in alpha-keto decarboxylation, links glycolysis with the Krebs cycle (tricarboxylic acid cycle, the main source of energy in mammals), and is critical in the production of cyclic guanosine monophosphate. Thiamin aids in digestion; improves tolerance to pain; is useful against psoriasis, shingles and seborrhoeic dermatitis; and reduces gastric acidity. Absence of thiamin results in malnutrition, softened bones and mental depression.

Dietary sources
Grains, yeast and animal viscera.

megavitamin therapy

The administration of excess or 'hyper-doses' of water-soluble vitamins, either physician-guided–eg, to treat neuropathies, or self-prescribed by health-food advocates. See Decavitamin, Orthomolecular medicine, Vitamin.
Megavitamins, adverse effects  
Thiamin CNS hyperresponsiveness–convulsions, Parkinson's disease–thiamin antagonizes l-dopa, sensory neuropathy–destruction of dorsal axon roots
Niacin/nicotinic acid & niacinamide/nicotinamide Exacerbation of asthma–histamine release, cardiac disease–arrhythmias, GI symptoms, eg nausea, vomiting, diarrhea, anorexia, DM–hyperglycemia, gout–↑ uric acid, liver disease–enzyme leakage, hepatocellular injury, portal fibrosis or massive necrosis, cholestatic jaundice, peptic ulcer disease–histamine release, ↑ acidity, skin disease
Vitamin B6 Paresthesia, headaches, asthenia, irritability
Vitamin C ↑ Iron absorption, possibly iron overload, evoking diarrhea, renal calculus formation and possibly inhibiting the bacteriolytic activity of neutrophils, G6PD deficiency–↑ red cell lysis, megaloblastic anemia–↓ vitamin B12 absorption, nephrolithiasis–oxaluria Diagn Clin Testing 1990; 28:27  

thi·a·min

(thī'ă-min)
A heat-labile and water-soluble vitamin contained in milk, yeast, and the germ and husk of grains; also artificially synthesized; essential for growth; a deficiency of thiamin is associated with beriberi and Wernicke-Korsakoff syndrome.
Synonym(s): vitamin B1.
[thia- + vitamin]

thi·a·min

(thī'ă-min)
Heat-labile and water-soluble vitamin contained in milk, yeast, and in the germ and husk of grains; essential for growth. Sometimes spelled thiamine.
Synonym(s): vitamin B1.
[thia- + vitamin]
References in periodicals archive ?
Low in sodium, it is also a good source of thiamin, and manganese.
Maximum inhibition was reflected by I2 with G1, G2 concentration of glucose, while I3 concentration of thiamin was overall efficient towards inhibition with G3 and G4 (Figure-3).
* 3/4 cup of calcium-fortified cereal has the same or more fiber, iron, magnesium, zinc, thiamin, riboflavin, niacin, vitamin A, vitamin [B.sub.6], and vitamin [B.sub.12] as milk.
INGREDIENTS: Enriched Wheat Flour (Wheat Flour, Niacin, Reduced Iron, Thiamin Mononitrate, Riboflavin, Folic Acid), Sunflower Oil (Rosemary Extract, Ascorbic Acid) and/or Canola Oil (Rosemary Extract, Ascorbic Acid), Sea Salt, Whole Wheat Flour, and Less than 2% of the Following: Organic Cane Sugar, Oat Fiber, Active Yeast, Compressed Yeast, Inactive Yeast, and Malted Barley Flour.
For example, calcium, iron, niacin and thiamin are added to white and brown wheat flour, and these are a valuable source of these nutrients for most people.
Offered in boxes of six 1.4-ounce bars, all bars provide vitamin B12, thiamin, vitamin B6 and folic acid.
B-VITAMINS, THIAMIN AND RIBOFLAVIN: Support skin health and stimulate the release of energy from carbs.
Ingredients: wholegrain rolled oats (60%), wholegrain oat flour, calcium, niacin, iron, pantothenic acid (B5), vitamin B6, riboflavin (B2), thiamin (B1), folic acid, vitamin B12.
Created to boost sports performance, the product provides 25 grams of carbohydrates, electrolytes, and 10 percent of the daily value of vitamin C, thiamin, riboflavin, and niacin, Additionally, the new aid original flavors were reformulated to include three B vitamins to promote metabolism of fats and carbs, and to replace nutrients lost through sweat.
All-new Granola Munch'ems in two varieties--Honey Oat and Brown Sugar Cinnamon--are made with whole grains and several essential vitamins and minerals, including vitamins A and B6, thiamin, niacin, riboflavin and calcium.
These include thiamin ([B.sub.1]), riboflavin ([B.sub.2]), nicotinic acid or niacin ([B.sub.3]), pantothenic acid ([B.sub.5]), pyridoxine ([B.sub.6]), biotin ([B.sub.7]), folic acid, folacin, or folate ([B.sub.9]), cyanocobalamin ([B.sub.12]), choline, and myoinositol.
On the other hand, in addition to getting enough protein and carbohydrates, Americans also take in sufficient amounts of such key nutrients as niacin, selenium, riboflavin, thiamin, folate and iron.