title: Interleukin-10 versus dexamethasone: effects on polymorphonuclear leukocyte functions of the newborn.
abstract: Interleukin-10 (IL-10), an anti-inflammatory cytokine, may have therapeutic potential in the fetal inflammatory response syndrome and its sequelae such as bronchopulmonary dysplasia (BPD). Our aim was to compare the effects of IL-10 versus dexamethasone (DEX) on important PMN functions of the newborn. PMNs were isolated into culture medium from cord blood after elective cesarean section deliveries. IL-10 and DEX were compared on an equimolar basis corresponding to previously measured plasma levels of DEX from infants treated for BPD. The endotoxin (LPS)-stimulated release of the pro-inflammatory cytokines, tumor necrosis factor (TNFalpha) and IL-1 beta, were markedly inhibited equally by IL-10 and DEX; the anti-inflammatory cytokine IL-4 was not released and IL-1 receptor antagonist (IL-1ra) was released less with DEX compared with IL-10. PMNs exposed to LPS, N-formyl-L-methionyl-L-leucyl-L-phenylalanine (fMLP), or S. aureus did not show a significant difference between control, DEX and IL-10 for apoptosis, respiratory burst, phagocytosis or killing respectively. Chemotaxis to fMLP or IL-8 was unaffected by DEX or IL-10. The principal effects of both IL-10 and DEX, on the PMN functions studied, are related to the control of pro- and anti-inflammatory cytokine release.
authors.affiliation: Division of Neonatal-Perinatal Medicine, Schneider Children's Hospital, New Hyde Park, New York 11040, USA.
authors.forename: Brett V
authors.initials: BV
authors.lastname: Citarella
authors.forename: Veronika
authors.initials: V
authors.lastname: Miskolci
authors.forename: Ivana
authors.initials: I
authors.lastname: Vancurova
authors.forename: Dennis
authors.initials: D
authors.lastname: Davidson
mesh_terms: D000893:Anti-Inflammatory Agents / Q000494:pharmacology*; D017209:Apoptosis / Q000187:drug effects; D053148:Caspase 3 / Q000378:metabolism; D002478:Cells, Cultured; D002634:Chemotaxis, Leukocyte / Q000187:drug effects; D016207:Cytokines / Q000378:metabolism; D003602:Cytotoxicity, Immunologic / Q000187:drug effects; D003907:Dexamethasone / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005312:Fetal Blood / Q000166:cytology; D006801:Humans; D007231:Infant, Newborn; D016753:Interleukin-10 / Q000494:pharmacology*; D008070:Lipopolysaccharides / Q000494:pharmacology; D009240:N-Formylmethionine Leucyl-Phenylalanine / Q000494:pharmacology; D020556:Neutrophil Infiltration / Q000187:drug effects; D009504:Neutrophils / Q000187:drug effects* / Q000201:enzymology / Q000276:immunology; D010587:Phagocytosis / Q000187:drug effects; D016897:Respiratory Burst / Q000187:drug effects; D013997:Time Factors
chemical_list: D000893:Anti-Inflammatory Agents; D016207:Cytokines; D008070:Lipopolysaccharides; D016753:Interleukin-10; D009240:N-Formylmethionine Leucyl-Phenylalanine; D003907:Dexamethasone; C505407:CASP3 protein, human; D053148:Caspase 3