title: Increased postnatal inflammation in mechanically ventilated preterm infants born to mothers with early-onset preeclampsia.
abstract: BACKGROUND
  Preeclampsia and preterm labor often underlie preterm birth, and are associated with maternal inflammation. In preterm infants, respiratory distress syndrome (RDS) and mechanical ventilation are associated with systemic inflammation.
  
  
  OBJECTIVE
  We aimed to study whether early-onset preeclampsia or preterm labor modulate the systemic inflammation affecting preterm infants with RDS.
  
  
  METHODS
  We recruited mechanically ventilated infants with gestational ages <32 weeks; 11 infants were born after early-onset preeclampsia and 25 after preterm labor. Blood was drawn during postnatal days 1-7, and the mean values of days 1-2, 3-4 and 5-6 were used. Phagocyte CD11b expression was analyzed with flow cytometry, and plasma C-reactive protein (CRP) concentrations with immunoturbidimetry.
  
  
  RESULTS
  As compared with infants born after preterm labor, infants born after early-onset preeclampsia had higher CD11b expression on days 1-6 on both neutrophils and monocytes. In addition, infants born after early-onset preeclampsia had higher CRP concentrations on days 2-6 (all p < 0.05).
  
  
  CONCLUSIONS
  As compared with infants born after preterm labor to mothers without preeclampsia, infants born after early-onset preeclampsia presented with a stronger postnatal systemic inflammatory reaction. Antenatal exposure to preeclampsia may induce fetal leukocyte priming and regulation of inflammation, and thereby modify postnatal inflammatory reactions and morbidity.
authors.affiliation: Hospital for Children and Adolescents, Helsinki University Central Hospital, University of Helsinki, Helsinki, Finland. riikka.s.turunen@helsinki.fi
authors.forename: Riikka
authors.initials: R
authors.lastname: Turunen
authors.forename: Sture
authors.initials: S
authors.lastname: Andersson
authors.forename: Hannele
authors.initials: H
authors.lastname: Laivuori
authors.forename: Eero
authors.initials: E
authors.lastname: Kajantie
authors.forename: Sanna
authors.initials: S
authors.lastname: Siitonen
authors.forename: Heikki
authors.initials: H
authors.lastname: Repo
authors.forename: Irmeli
authors.initials: I
authors.lastname: Nupponen
mesh_terms: D000328:Adult; D001724:Birth Weight; D002097:C-Reactive Protein / Q000032:analysis; D039481:CD11b Antigen / Q000378:metabolism; D005260:Female; D005315:Fetal Diseases; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007249:Inflammation / Q000175:diagnosis* / Q000209:etiology / Q000378:metabolism; D007958:Leukocyte Count; D009000:Monocytes / Q000378:metabolism; D009504:Neutrophils / Q000378:metabolism; D007752:Obstetric Labor, Premature / Q000175:diagnosis* / Q000503:physiopathology; D010586:Phagocytes / Q000378:metabolism; D011225:Pre-Eclampsia / Q000175:diagnosis* / Q000503:physiopathology; D011247:Pregnancy; D047928:Premature Birth / Q000175:diagnosis* / Q000503:physiopathology; D012121:Respiration, Artificial / Q000009:adverse effects*; D012127:Respiratory Distress Syndrome, Newborn / Q000209:etiology
chemical_list: D039481:CD11b Antigen; C509295:ITGAM protein, human; D002097:C-Reactive Protein