Proinflammatory cytokine-receptor interaction model improves the predictability of cerebral white matter injury in preterm infants.
Proinflammatory cytokines have been variably linked to development of cerebral white matter injury (WMI) in preterm infants. Because soluble receptors tightly control cytokine bioactivity, we modeled cytokine-receptor interaction as a predictor of WMI. Plasma from 100 preterm infants was assayed for cytokines (tumor necrosis factor alpha, interleukin (IL-1beta, IL-6) and their soluble receptors (sTNF-RI), sTNF-RII, sIL-1RA, and sIL-6R). Cranial ultrasound (US) results were correlated with cytokine and receptor concentrations individually and with cytokine-receptor interaction models (PROC LOGISTIC; SAS Software). Receiver operating characteristic curves were constructed to determine the predictability of WMI. Fifty-two infants with normal US exams were compared with 21 infants with evidence of WMI. There was no association between individual cytokine or receptor concentrations and the development of WMI. However, modeling cytokines with their soluble receptors significantly improved the predictability of WMI. We concluded that consideration of cytokine-receptor interaction may be more important than individual cytokine concentrations alone in determining the role of inflammation in the pathogenesis of WMI in preterm infants.
Division of Neonatal Medicine, Children's Hospital of The King's Daughters, Eastern Virginia Medical School, Norfolk, Virginia 23507, USA.
W Thomas
WT
Bass
E Stephen
ES
Buescher
Pamela S
PS
Hair
Larry E
LE
White
J Camille
JC
Welch
Bonnie L
BL
Burke
D015415:Biomarkers / Q000097:blood; D001921:Brain; D016207:Cytokines / Q000097:blood*; D004453:Echoencephalography; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007235:Infant, Premature, Diseases / Q000097:blood* / Q000175:diagnosis / Q000000981:diagnostic imaging; D019102:Infant, Very Low Birth Weight; D053583:Interleukin-1beta / Q000097:blood; D015850:Interleukin-6 / Q000097:blood; D007969:Leukomalacia, Periventricular / Q000097:blood* / Q000175:diagnosis / Q000000981:diagnostic imaging; D008297:Male; D018123:Receptors, Interleukin / Q000097:blood*; D018124:Receptors, Tumor Necrosis Factor / Q000097:blood*; D014409:Tumor Necrosis Factor-alpha / Q000097:blood
D015415:Biomarkers; D016207:Cytokines; D053583:Interleukin-1beta; D015850:Interleukin-6; D018123:Receptors, Interleukin; D018124:Receptors, Tumor Necrosis Factor; D014409:Tumor Necrosis Factor-alpha