[Standards of hourly excretion of B group vitamins with urine for children aged 9 to 13 years].
Values of hour excretion of vitamins B1, B2, B6 and PP with urine in children of 9-13 years, studied under conditions of normal consumption of these vitamins, were estimated considering the correlation between the vitamins B concentration in blood and excretion of their metabolites with urine as well as using these parameters dependence on content of the vitamins in daily ration; for this purpose 35 adult persons and 31 children of both sexes were examined. Normal rate of riboflavin excretion with urine constituted 10-11 micrograms/h in children of this age, while of thiamine-11-12 micrograms/h. Under conditions of normal thiamine consumption, activity of erythrocyte transketolase, measured after preinactivation of transaldolase, exceeded 35 mumol/h/I ml of erythrocytes. Rates of excretion with urine of 4-pyridoxic acid and I-methyl nicotinamide were similar both in children and in adult persons and were equal to more than 40 micrograms/h and 400-600 micrograms/h, respectively.
V M
VM
Kodentsova
O A
OA
Vrzhesinskaia
S N
SN
Denisova
A A
AA
Sokol'nikov
N A
NA
Beketova
V A
VA
Isaeva
O K
OK
Netrebenko
V B
VB
Spirichev
D000293:Adolescent; D002648:Child; D004912:Erythrocytes / Q000201:enzymology; D006801:Humans; D012016:Reference Values; D013997:Time Factors; D014153:Transaldolase / Q000037:antagonists & inhibitors; D014174:Transketolase / Q000097:blood; D014803:Vitamin B Complex / Q000652:urine*
D014803:Vitamin B Complex; D014174:Transketolase; D014153:Transaldolase