Journal
JOURNAL OF PEDIATRICS
Volume 148, Issue 6, Pages 740-746Publisher
MOSBY-ELSEVIER
DOI: 10.1016/j.jpeds.2006.01.037
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Objective To investigate whether or not peri/intraventricular hemorrhages (PIVHs) occurring in the first 12 hours of life (early PIVHs) are related to respiratory distress syndrome (RDS)-associated inflammatory factors in contrast to PIVHs -developing after 12 hours of life (late PIVHs). Study design Blood samples obtained at 0 to 12 hours, 48 to 72 hours, and 168 hours of life were evaluated for determination of the proinflammatory cytokines interleukin (IL)-8 and IL-6, tumor necrosis factor (TNF)-alpha, and malondialdehyde (MDA) as measures of lipid peroxidation. Simultaneously, cranial ultrasonography was performed in 114 neonates under 32 weeks gestational age. Results Out of the total study group of 114 neonates, 67 (59%) had RDS. Early PIVH occurred in 16 neonates, 14 of whom (88%) had RDS. Late PIVHs occurred in 12 neonates. Neonates with RDS had higher IL-8 and IL-6 levels at 0 to 12 hours (P <.0001; <.0001) and at 48 to 72 hours (P <.001; <.01) than those without RDS. Neonates with early PIVH had higher IL-8 (P <.02), IL-6 (P <.02), and MDA (P <.01) levels at 0 to 12 hours than those With late PIVH or no PIVH. Those with early PIVH had higher IL-8 levels at 48 to 72 hours than those without PIVH (P <.02). Multiple linear regression revealed an association between RDS/early PIVH and IL-8, IL-6, and MDA levels. Conclusions An RDS-associated increase in proinflammatory cytokine and MDA levels was associated with early PIVHs, but not with late PIVHs, suggesting a different etiopathogenesis in early versus late PIVHs.
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