| Autor: |
Heiskanen, Kaarina, Salmenperä, Leena, Perheentupa, Jaakko, Siimes, Martti A. |
| Předmět: |
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| Zdroj: |
American Journal of Clinical Nutrition; Dec1994, Vol. 60 Issue 6, p907-910, 4p |
| Abstrakt: |
To study the effect of type of feeding on infant vitamin B-6 status, we determined erythrocyte pyridoxal 5'-phosphate concentration (EPLP) and erythrocyte aspartate amino-transferase basal activity (EASTo) and its activation coefficient (αEAST) in 109 infants at 2, 4, 6, 9, and 12 mo of age. Thirty-six infants were exclusively breast-fed for 9 mo. Forty-six infants were exclusively breast-fed for 6 mo, and then given solid foods in addition. Twenty-seven infants were weaned by 2-3 mo to an adapted cow milk-based formula (15 g protein/L and 0.6 mg pyridoxinelL) and given solid foods from 3 to 4 mo. Infant vitamin B-6 status was age-dependent; it was highest at 4 mo and thereafter gradually approached adult values. The larger the intake of formula, the higher the vitamin B-6 status. In formula-fed infants at ages 2-6 mo, 71-96% of the EPLP values and 57-70% of the EASTo values were above the 95th percentile, and 35-53% of the αEAST values were below the 5th percentile for these values in breast-fed infants. These findings raise the question of whether the vitamin B-6 content of formulas, especially in relation to protein content, should be reduced. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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