Deficiency of vitamin B6 in women taking contraceptive formulations. 1977

H Kishi, and T Kishi, and R H Williams, and T Watanabe, and K Folkers, and M L Stahl

The specific activities (S.A.) of the glutamic oxaloacetic transaminase from erythrocytes (EGOT) of 75 women taking 16 diversified contraceptive formulations were determined by the principle (CAS) of unsaturation and saturation of receptors of the Coenzyme-Apoenzyme-System with the coenzyme, pyridoxal 5'-phosphate. 52 women were not taking pyridoxine; 20 were taking 1-5 mg; 3 were taking 25-100 mg. The mean basal S.A. of the 52 women without pyridoxine was lower (p less than 0.01) than for the 20 on 1-5 mg. The mean basal S.A. for the women on 25-100 mg was higher (p less than 0.01) than for the women without pyridoxine. The mean % deficiency for the women on 25-100 mg was negligible and lower (p less than 0.01) than 18+/-8 for the 52 women, and 14+/-6 for the 20 women. These data indicate that 1-5 mg of pyridoxine is inadequate for women on contraceptives. The requisite daily dosage is projected at 50-100 mg. Other data indicate that 5-12 weeks of supplementation with pyridoxine can be required to reach a stable "ceiling" of S.A. of EGOT. This period indicates some regulatory mechanism by diminished levels of the apoenzyme upon gene expression to bring about normal levels of the transaminase.

UI MeSH Term Description Entries
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D011736 Pyridoxine The 4-methanol form of VITAMIN B 6 which is converted to PYRIDOXAL PHOSPHATE which is a coenzyme for synthesis of amino acids, neurotransmitters (serotonin, norepinephrine), sphingolipids, aminolevulinic acid. Although pyridoxine and Vitamin B 6 are still frequently used as synonyms, especially by medical researchers, this practice is erroneous and sometimes misleading (EE Snell; Ann NY Acad Sci, vol 585 pg 1, 1990). Pyridoxin,Pyridoxine Hydrochloride,Pyridoxol,Pyridoxol Hydrochloride,Rodex
D003276 Contraceptives, Oral Compounds, usually hormonal, taken orally in order to block ovulation and prevent the occurrence of pregnancy. The hormones are generally estrogen or progesterone or both. Low-Dose Oral Contraceptive,Oral Contraceptive,Oral Contraceptives,Oral Contraceptives, Low-Dose,Oral Contraceptives, Phasic,Contraceptive, Low-Dose Oral,Contraceptive, Oral,Contraceptives, Low-Dose Oral,Contraceptives, Phasic Oral,Low Dose Oral Contraceptive,Low-Dose Oral Contraceptives,Oral Contraceptive, Low-Dose,Oral Contraceptives, Low Dose,Phasic Oral Contraceptives
D004912 Erythrocytes Red blood cells. Mature erythrocytes are non-nucleated, biconcave disks containing HEMOGLOBIN whose function is to transport OXYGEN. Blood Cells, Red,Blood Corpuscles, Red,Red Blood Cells,Red Blood Corpuscles,Blood Cell, Red,Blood Corpuscle, Red,Erythrocyte,Red Blood Cell,Red Blood Corpuscle
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D001219 Aspartate Aminotransferases Enzymes of the transferase class that catalyze the conversion of L-aspartate and 2-ketoglutarate to oxaloacetate and L-glutamate. EC 2.6.1.1. Aspartate Aminotransferase,Aspartate Transaminase,Glutamic-Oxaloacetic Transaminase,SGOT,Aspartate Apoaminotransferase,Glutamate-Aspartate Transaminase,L-Aspartate-2-Oxoglutarate Aminotransferase,Serum Glutamic-Oxaloacetic Transaminase,Aminotransferase, Aspartate,Aminotransferase, L-Aspartate-2-Oxoglutarate,Aminotransferases, Aspartate,Apoaminotransferase, Aspartate,Glutamate Aspartate Transaminase,Glutamic Oxaloacetic Transaminase,Glutamic-Oxaloacetic Transaminase, Serum,L Aspartate 2 Oxoglutarate Aminotransferase,Serum Glutamic Oxaloacetic Transaminase,Transaminase, Aspartate,Transaminase, Glutamate-Aspartate,Transaminase, Glutamic-Oxaloacetic,Transaminase, Serum Glutamic-Oxaloacetic
D026681 Vitamin B 6 Deficiency A nutritional condition produced by a deficiency of VITAMIN B 6 in the diet, characterized by dermatitis, glossitis, cheilosis, and stomatitis. Marked deficiency causes irritability, weakness, depression, dizziness, peripheral neuropathy, and seizures. In infants and children typical manifestations are diarrhea, anemia, and seizures. Deficiency can be caused by certain medications, such as isoniazid. Pyridoxine Deficiency,Deficiency, Pyridoxine,Deficiency, Vitamin B 6,Deficiency, Vitamin B6,Vitamin B6 Deficiency,Vitamin Deficiency, B6,B6 Deficiencies, Vitamin,B6 Deficiency, Vitamin,B6 Vitamin Deficiencies,B6 Vitamin Deficiency,Deficiencies, B6 Vitamin,Deficiencies, Vitamin B6,Deficiency, B6 Vitamin,Vitamin B6 Deficiencies,Vitamin Deficiencies, B6

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