title: [Effects of riboflavin administration on vitamin B6 metabolism].
abstract: It is shown that B2 vitamin-deficient subjects have reduced urinary excretion of 4-pyridoxic acid (4-PA) compared to normal subjects. Correlation between the total of the pyridoxal coenzymes in human plasma and 4-PA urinary excretion takes place only under adequate intake of riboflavin. The conditions under which measurements of 4-PA excretion and plasma levels of pyridoxal and pyridoxal phosphate can be used as indicators of B6-vitamin sufficiency are discussed.
authors.forename: V M
authors.initials: VM
authors.lastname: Kodentsova
authors.forename: L M
authors.initials: LM
authors.lastname: Iakushina
authors.forename: O A
authors.initials: OA
authors.lastname: Vrzhesinskaia
authors.forename: N A
authors.initials: NA
authors.lastname: Beketova
authors.forename: V B
authors.initials: VB
authors.lastname: Spirichev
mesh_terms: D000328:Adult; D000818:Animals; D002648:Child; D006801:Humans; D011730:Pyridoxal / Q000097:blood; D011732:Pyridoxal Phosphate / Q000097:blood; D011735:Pyridoxic Acid / Q000652:urine; D011736:Pyridoxine / Q000097:blood / Q000378:metabolism*; D051381:Rats; D012256:Riboflavin / Q000008:administration & dosage / Q000494:pharmacology*
chemical_list: D011730:Pyridoxal; D011735:Pyridoxic Acid; D011732:Pyridoxal Phosphate; D011736:Pyridoxine; D012256:Riboflavin
vernacular_title: Vliianie obespechennosti riboflavinom na metabolizm vitamina B6.