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Serial changes in levels of IL‐6 and IL‐1β in premature infants at risk for bronchopulmonary dysplasia*

支气管肺发育不良 医学 胎龄 呼吸窘迫 逻辑回归 表面活性剂疗法 出生体重 持续气道正压 胃肠病学 内科学 儿科 呼吸系统 新生儿呼吸窘迫综合征 麻醉 怀孕 阻塞性睡眠呼吸暂停 生物 遗传学
作者
S. Nadya J. Kazzi,Roberto Romero,Kathleen McLaughlin,Joel W. Ager,James Janisse
出处
期刊:Pediatric Pulmonology [Wiley]
卷期号:31 (3): 220-226 被引量:29
标识
DOI:10.1002/ppul.1032
摘要

The aim of this study was to define the inflammatory changes occurring in the lungs of infants at risk for bronchopulmonary dysplasia (BPD) over the first 28 days of life, and to define an optimal strategy for steroids therapy in the prevention of BPD. We measured levels of interleukin-6 (IL-6) and interleukin-1 beta (IL-1beta) in tracheal aspirate (TA) samples and blood of premature infants with severe respiratory distress syndrome RDS (n = 45) on the first day of life prior to initiation of surfactant therapy and on days 5-7, 12-14, 19-21, and 26-28. Levels of IL-6 and IL-1beta were determined with a commercially available enzyme-linked immunoassay. Logistic regression analyses were performed in order to examine differences in trends in levels of IL-6 and IL-1beta between groups of infants. Infants were divided into group I (n = 30, FiO(2) < or = 0.35 at 28 days) and group II (n = 15, FiO(2) > 0.35 based on their likelihood of developing BPD at 36 weeks postconceptional age (PCA). The infants were comparable with respect to mean ( +/- SEM) birth weight (895 +/- 33 g vs. 900 +/- 40 g), gestational age (27 +/- 0.38 weeks vs. 27 +/- 0.54 weeks), and severity of respiratory illness at entry into the study (mean airway pressure: 12 +/- 1 cmH(2)O vs. 12 +/- 1 cmH(2)O, and oxygen index: 15 +/- 2 vs. 19 +/- 4) (group I vs. group II, respectively). Logistic regression analyses failed to reveal any significant differences in linear trends of levels of IL-6 and IL-1beta in TA samples between both groups of infants. No particular pattern of change in levels of IL-6 or IL-1beta could be identified among groups of infants. Levels of IL-6 and IL-1beta in TA samples on the first day of life failed to predict the need for FiO(2) > 0.35 at 28 days of age. We could not identify an increasing trend or a specific pattern of changes in postnatal levels of IL-6 or IL-1beta in TA samples of infants who were at greater risk of developing BPD at 36 weeks PCA compared to infants who were not.
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