Plasma Pyridoxal Phosphate Levels in Newborn Infants, Their Mothers and in the Mothers' Breast Milk

Abstract

Plasma pyridoxal phosphate (PLP) was determined in 10 newborn infants (two pairs of twins), their 8 mothers, and in addition in the mothers' breast milk. Mothers who did not take extra vitamin B-6 during pregnancy had lower levels of PLP both in plasma and in their milk. The infants' PLP decreased during the first two weeks of life when receiving only their mothers' milk. None of the mothers nor the infants showed any clinical signs of vitamin B-6 deficiency.