Plasma neutrophil lipocalin, elastase-alpha1-antitrypsin complex and neutrophil protease 4 in preterm infants with respiratory distress syndrome.
Respiratory distress syndrome (RDS) and chronic lung disease of prematurity (CLD) are associated with inflammation of the airways and interstitial tissue of the lung. It is hypothesized that RDS severity and the risk of developing CLD may be correlated with neutrophil gelatinase-associated lipocalin (NGAL), a marker of leucocyte activity, human elastase-alpha1-antitrypsin complex (HEAT) or free and complexed neutrophil protease 4 (NP4), markers of proteolytic enzyme secretion from granulocytes. Thirty-three preterm infants with RDS were enrolled in the study and plasma sampled between 3 and 14 days of life. NGAL, HEAT and NP4 concentrations varied widely in infants with RDS. Significant correlations between subsequent development of CLD and plasma concentrations of HEAT and NP4, respectively, were found on days 3-4 of life, p=0.006 and p=0.02, respectively.
Sveger
T
T
Department of Paediatrics, University of Lund, University Hospital, Malmö, Sweden. tomas.sveger@pediatrik.mas.lu.se
Ohlsson
K
K
Mörse
H
H
Polberger
S
S
Laurin
S
S
D000209:Acute-Phase Proteins; D015415:Biomarkers / Q000097:blood; D002352:Carrier Proteins / Q000097:blood*; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature / Q000097:blood*; D019272:Leukocyte Elastase / Q000097:blood*; D000071068:Lipocalin-2; D054834:Lipocalins; D053146:Myeloblastin; D015513:Oncogene Proteins; D011518:Proto-Oncogene Proteins; D012127:Respiratory Distress Syndrome, Newborn / Q000097:blood*; D012697:Serine Endopeptidases / Q000097:blood*; D000515:alpha 1-Antitrypsin
D000209:Acute-Phase Proteins; D015415:Biomarkers; D002352:Carrier Proteins; C489506:LCN2 protein, human; D000071068:Lipocalin-2; D054834:Lipocalins; D015513:Oncogene Proteins; D011518:Proto-Oncogene Proteins; D000515:alpha 1-Antitrypsin; C037741:alpha 1-antitrypsin-leukocyte elastase complex; D012697:Serine Endopeptidases; D019272:Leukocyte Elastase; D053146:Myeloblastin