Morbility, clinical data and proteomic analysis of IUGR and AGA newborns at different gestational ages

The data are related to the proteomic analysis of 43 newborns with intrauterine growth retardation (IUGR) and 45 newborns with appropriate weight for gestational age (AGA) carried out by separation via 2DE and analyzed by MS–TOF/TOF. All newborns were separated into three gestational age groups, "Very Preterm" 29–32 weeks, "Moderate Preterm" 33–36 weeks, and, "Term" ≥37weeks. From each newborn, blood was drawn three times from birth to 1 month life. High-abundant serum proteins were depleted, and the minority ones were separated by 2DE and analyzed for significant expression differences. The data reflect analytic and clinic variables analyzed globally and categorized by gestational age in relation to IUGR and the optimization of conditions for 2-DE separation. The data from this study are related to the research article entitled "Alterations of Protein Expression in Serum of Infants with Intrauterine Growth Restriction and Different Gestational Ages" (M.D. Ruis-González, M.D. Cañete, J.L. Gómez-Chaparro, N. Abril, R. Cañete, J. López-Barea, 2015) [1]. The present dataset of serum IUGR newborn proteome can be used as a reference for any study involving intrauterine growth restriction during the first month of life.

Parenteral nutrition and immature neonates. Comparative study of neonates weighing under 1000 and 1000-1250 g at birth

We studied the nutritional requirements of 53 neonates with a birth-weight of 1250 g or less and analysed the parenteral and enteral nutrition provided, the weight-gain curves, the incidence of prior pathology and complications. We compared those weighing under 1000 g at birth (n=25) with those weighing 1001-1250 g (n=28). All neonates received central parenteral nutrition at an average age of 42.3 h. The liquid requirements of the lower birth-weight group were significantly greater. No differences were found in the supply of glucose, proteins, lipids and calories until after the first 15 days of life, when the <1000 g group required a greater liquid and caloric intake. Parenteral nutrition was suspended earlier for the >1000 g group (32.6 vs. 48.1 days). Maximum weight loss (12.56%) for the two groups occurred at 5.23 days. No differences in weight gain (g/kg/day) between the groups were observed. The >1000 g group began enteral nutrition significantly earlier and presented greater tolerance. The incidence of complications (bronchopulmonary dysplasia, enterocolitis, nosocomial sepsis, Candidas A sepsis, osteopenia) was greater in the lower birth-weight group, as was that of hyaline membrane disease and mechanically assisted respiration. There were no differences in the incidence of intracraneal haemorrhage, ductus arteriosus, early sepsis, delayed intrauterine growth or hypoglucemia.

CONCLUSIONS

The severity of the initial pathology and the greater incidence of complications among the lower birth-weight neonates (<1000 g) influenced both the need for parenteral nutrition and the reduced tolerance to enteral nutrition. Although the rate of weight gain was similar for the two groups, the <1000 g group required a longer period of parenteral nutrition.