Kotecha S, Silverman M, Shaw R J, Klein N
Department of Paediatrics, Hammersmith Hospital, London.
Arch Dis Child Fetal Neonatal Ed. 1998 Mar;78(2):F143-7. doi: 10.1136/fn.78.2.f143.
To explore the changes in neutrophil adhesion molecule expression and release into bronchoalveolar lavage fluid (BAL) obtained from infants who developed chronic lung disease (CLD).
BAL fluid was obtained from 37 infants: 18 (median gestation 26 weeks, birthweight 835 g) who developed CLD, 12 (29 weeks, 1345 g) with respiratory distress syndrome (RDS) and seven control infants (33 weeks, 2190 g).
Soluble L-selectin (sL-selectin) in BAL fluid from the CLD and non-CLD groups was similar immediately after birth, but in infants who subsequently developed CLD, sL-selectin remained persistently increased (at day 7: CLD 42.6 vs RDS 6.0 ng/ml, p < 0.05; CLD vs controls 1.5 ng/ml; p < 0.05). CD11b/CD18 expression on neutrophils obtained by BAL increased with time to reach a maximum at 17 days of age in infants who developed CLD.
These results suggest that leucocyte traffic persists in infants who develop CLD and may have an important part to play in the pathogenesis of CLD.
探讨慢性肺疾病(CLD)患儿支气管肺泡灌洗液(BAL)中中性粒细胞黏附分子表达及释放情况的变化。
收集37例婴儿的BAL液,其中18例(中位胎龄26周,出生体重835克)患CLD,12例(29周,1345克)患呼吸窘迫综合征(RDS),7例为对照婴儿(33周,2190克)。
CLD组和非CLD组婴儿出生后即刻BAL液中可溶性L-选择素(sL-选择素)水平相似,但随后患CLD的婴儿中,sL-选择素持续升高(第7天:CLD组42.6 ng/ml,RDS组6.0 ng/ml,p<0.05;CLD组与对照组1.5 ng/ml,p<0.05)。CLD患儿通过BAL获得的中性粒细胞上CD11b/CD18表达随时间增加,在17日龄时达到最高。
这些结果提示,患CLD的婴儿中白细胞迁移持续存在,可能在CLD发病机制中起重要作用。