Abstract
Postnatal blood glucose and individual plasma free amino acid levels were measured in 14 newborn infants of diabetic mothers. All infants had a significantly lower blood glucose concentration than normal controls but no significant correlation was observed between the blood glucose values and any of the amino acids determined. As regards the quantitative and qualitative changes of the plasma aminogram, the total concentration of amino acids and the level of a few individual amino acids (glycine, alanine, taurine, and valine) were significantly elevated in full-term babies. However, no significant difference was found in the total plasma concentration of amino acids between premature infants of diabetic mothers and premature control infants, but the plasma alanine level was higher in the former. It is of interest that total plasma amino acid, alanine, and glycine levels were elevated in the asphyxiated babies. This suggests that the postnatal hyperaminoacidemia observed in infants of diabetic mothers was due to birth asphyxia rather than to impaired gluconeogenesis. The possible role of a defective gluconeogenesis in the etiology of postnatal hypoglycemia in infants of diabetic mothers is not supported by these data.
Published Version
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