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Aim: To determine serum levels of interleukin-6 (IL-6), IL-1β, tumor necrosis factor-α (TNF-α), soluble intercellular adhesion molecule-1 (sICAM-1) and C-reactive protein (CRP) in asphyxiated neonates and compare these inflammatory factors with those found in neonates with perinatal infection. Methods: 88 neonates were studied, of whom 36 were asphyxiated, 18 were infected and the remaining 34 were controls. Peripheral blood samples were obtained on the 1st, 3rd and 5th postnatal days. Results: Cytokines IL-6 and IL-1β as well as sICAM-1 serum levels did not differ between asphyxiated and infected neonates; however, at most time periods, their values were significantly higher than controls. TNF-α was similar in the three groups of neonates. CRP serum values were significantly higher in the infected neonates than in the asphyxiated or control subjects. Among the 54 asphyxiated and infected neonates, 15 were considered as severe cases and 39 as mild. The severe cases, at most time periods, had significantly higher IL-6, IL-1β and sICAM-1 levels compared with the mild ones. Through receiver operating characteristic curves the cut-off points, sensitivities, and specificities for distinguishing neonates at risk or at high risk for brain damage were established. Conclusion: Similar increases in serum levels of IL-6, IL-1β and sICAM-1 were found in perinatally asphyxiated and infected neonates. As these increases correlated with the severity of the perinatal insults, neonates at high risk for brain damage might be detected. [ABSTRACT FROM AUTHOR]

Antibody-dependent, phytohaemagglutinin-induced, and spontaneous cytotoxicity was studied in 44 term and 60 preterm newborn babies, all of whom were healthy and of normal weight for gestational age. Twenty-seven adults were used as controls. Antibody-dependent cytotoxicity was low in term babies particularly in the preterm ones during the first 4 days of life, but soon rose to adult levels. Phytohaemagglutinin-induced cytotoxicity was low both in term and preterm babies compared with adult levels, and remained lower throughout the neonatal period although it began to rise. Spontaneous cytotoxicity was lower in preterm babies than in term ones during the first 2 weeks of life, and lower too than in adults. These findings indicate decreased cytotoxic ability of neonatal leucocytes especially during the first 4 days of postnatal life particularly in preterm babies, suggesting either lack of effector cells or that the cells are functionally immature. [ABSTRACT FROM AUTHOR]

Investigates the acid-base balance of the newborn during and after exchange transfusion. Therapeutic importance of exchange transfusion in the treatment of severe neonatal jaundice; Occurrence of acidosis when the transfused blood contains ACD as anticoagulant. Technique in helping babies keep their acid-base balance in good state during and after exchange transfusion with ACD blood, provided that no other stress such as anoxia or illness is superimposed.

Serum lysozyme levels were studied in term babies at the time of delivery and again between 7th and 30th postnatal days, and in preterm babies on the 1st, 3rd, and 5th postnatal days. Levels in term babies at delivery (mean 2.28 mug/ml) were similar to those found in adults, but they fell between the 7th and 30th postnatal days. In premature babies lysozyme levels on the first day of live (mean (0.82 mug/ml) were lower than in term babies. They tended to rise during the first 5 days, by which time they had reached levels found in term babies between the 7th and 30th days. The low lysozyme levels in preterm and in term babies after the first few days of life may contribute to the poor ability of the newborn baby to localize infection and to kill bacteria extracellularly. [ABSTRACT FROM AUTHOR]

The phagocytosis and killing ability of leucocytes of 24 term and 22 preterm babies against Candida albicans were studies during the first 20 days of life because of the increased incidence of monilia infection at this time. The leucocytes of 14 adults aged 20 to 30 years served as controls. The phagocytosis ability of the leucocytes in adults, term, and preterm babies was not significantly different, mean values being respectively 66-7%, 57%, and 56-9%. The killing ability of the leycocytes in term and preterm babies was lower when compared with that of adult leucocytes (P less than 0-001 for term and P less than 0-01 for preterm infants). The mean value in adults was 27-5%, in term infants 9-7%, and in preterm infants 9-5%. It is suggested that as the addition of adult serum did not improve the candidacidal ability of newborn leucocytes, the killing defect should be sought in the leucocyte itself and not in serum factors. [ABSTRACT FROM AUTHOR]

Reports on the response of the white blood cells during exchange transfusion in the newborn and for seven to nine days after. Materials and methods; Results; Discussion.