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The effect of perinatal anoxia on amino acid metabolism in the developing brain part ii. the effect of perinatal anoxia on the free amino acid patterns in cerebrospinal fluid of infants and children



The effect of perinatal anoxia on amino acid metabolism in the developing brain part ii. the effect of perinatal anoxia on the free amino acid patterns in cerebrospinal fluid of infants and children



Brain and Development 7(4): 400-407



To clarify the effects of perinatal anoxia on the subsequent amino acid metabolism in the brain of children, free amino acid levels in the cerebrospinal fluid (CSF) were determined in 15 children diagnosed as having cerebral palsy and/or mental retardation with perinatal anoxia, and 58 control children without anoxia, aged from 4 days to 12 yrs. There was no significant difference in total amino acid levels between anoxic children and the controls. In the controls, the Gln level in CSF was high, Arg, Asp and Glu levels in CSF were almost the same during infancy and childhood, and the levels of Orn, Lys, His, Tau, Thr, Ser, Asn, Gly, Ala, Val, Met, Ile, Leu, Tyr and Phe in CSF decreased with age until pre-school age. In the newborns and infants among the anoxic children, the levels of most free amino acids in CSF were relatively high compared with those of the controls and, except Glu and Gln, decreased with age during infancy. The Orn, His, Gly, Tyr and Phe levels in CSF of anoxic children were lower than those of the controls in older infants. These results suggest that perinatal anoxia affected free amino acid patterns in CSF of newborns and infants and that the subsequent disturbance of amino acid metabolism in their brains remained after birth.

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