Effect of Nutrition on Tissue Carnitine Concentrations in Infants of Different Gestational Ages

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Abstract
To investigate the effect of nutrition on tissue carnitine concentrations in infants of different gestational ages, specimens of muscle, heart, liver and kidney obtained at autopsy from 62 infants were analyzed for total acid-soluble carnitine content. Immature infants had smaller carnitine tissue reserves than term infants. Parenterally alimented premature infants (> 10 days old) had lower carnitine levels in heart, liver and kidney than those dying within 24 h after birth. Infants who received oral or intravenous carnitine had larger carnitine tissue reserves than those who did not. These data suggest that both gestational age and exogenous carnitine supply affect tissue carnitine reserves.