title: Plasma pyridoxal phosphate concentrations and coenzyme stimulation of erythrocyte alanine aminotransferase activities of white and black adolescent girls.
abstract: The vitamin B6 status of 96 white and 90 black female adolescents was assessed utilizing plasma pyridoxal phosphate concentrations, coenzyme stimulation of erythrocyte alanine aminotransferase activities, and vitamin B6 intakes. These values were similar for the two race and three age groups. Fifty-eight percent of the girls reported consuming less than 0.02 mg vitamin B6/g protein daily. The mean coenzyme stimulation and pyridoxal phosphate values of the subjects were 13.5% and 45.2 nM. Coenzyme stimulation values greater than 25% were observed in 18% of the girls and values between 16 and 25%, in 23%. Plasma pyridoxal phosphate concentrations less than 34.4 nM were observed in 26% of the girls and values from 34.4 to 40.5 nM, in 14%. Vitamin B6 inadequacy was prevalent among white and black southern adolescent girls participating in this study as indicated by plasma pyridoxal phosphate concentrations, coenzyme stimulation of erythrocyte alanine aminotransferase activities, and vitamin B6 intakes.
mesh_terms: D000293:Adolescent; D000410:Alanine Transaminase / Q000097:blood / Q000378:metabolism*; D044383:Black People; D001827:Body Height; D001835:Body Weight; D002648:Child; D004044:Dietary Proteins / Q000378:metabolism; D005260:Female; D006801:Humans; D009749:Nutrition Surveys; D011732:Pyridoxal Phosphate / Q000097:blood*; D026681:Vitamin B 6 Deficiency / Q000097:blood / Q000378:metabolism*; D044465:White People
chemical_list: D004044:Dietary Proteins; D011732:Pyridoxal Phosphate; D000410:Alanine Transaminase