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see coenzymecoenzyme
, any one of a group of relatively small organic molecules required for the catalytic function of certain enzymes. A coenzyme may either be attached by covalent bonds to a particular enzyme or exist freely in solution, but in either case it participates intimately in
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; vitaminvitamin,
group of organic substances that are required in the diet of humans and animals for normal growth, maintenance of life, and normal reproduction. Vitamins act as catalysts; very often either the vitamins themselves are coenzymes, or they form integral parts of coenzymes.
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(also called pyridoxol), vitamin B6. Pyridoxine is found in largest amounts in rice bran, beans, yeast, kidneys, liver, and muscles. Its structural formula is

In animal tissues, pyridoxine is converted into pyridoxal phosphate, an active coenzyme form of vitamin B6 A deficiency of pyridoxine in the diet gives rise to dermatitis and convulsions.


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References in periodicals archive ?
Improvement of oral glucose tolerance in gestational diabetes by pyridoxine.
INH exerts toxicity by inhibiting pyridoxine kinase, the enzyme responsible for the production of pyridoxal phosphate, the active form of pyridoxine.
She was later switched to oral pyridoxine at a dose of 100mg/day and physiotherapy was continued.
For example, in one small clinical trial, ondansetron 4 mg every 8 hours was reported to be superior to a combination of pyridoxine 25 mg every 8 hours plus doxylamine 12.
Data were analyzed as a completely randomized design by one-way analysis of variance procedure of SAS software (SAS Institute, 2003) with pen used as experimental unit for analysis and the linear and quadratic effects of pyridoxine were also tested by REG procedure of SAS software (SAS Institute, 2003).
There are three methods for treating vincristine-related neuropathy: reduction of vincristine dose; discontinuation of vincristine; and/or treatment with pyridoxine and pyridostigmine.
16,53) Doxylamine/ pyridoxine has remained classified as risk level A in the standard reference Drugs in Pregnancy and Lactation by Briggs, Freeman, and Yaffe.
1%, pyridoxine deficiency (detected on clinical response) 1.
Furthermore, pyridoxine is a cofactor for many enzymatic reactions, especially those involved in amino acid metabolism [31].
KEY WORDS: abalone, Haliotis discus hannai, pyridoxine, requirement, aminotransferases, feeding and nutrition
The subjects were followed for a mean of 2 years, and regular blood tests confirmed that high doses of folic acid, pyridoxine (vitamin [B.
Bendectin consisted of 10 mg of pyridoxine (vitamin [B.