Toll-样受体2，4mRNA在急性出血坏死性胰腺炎肺损伤中的表达变化

目的研究急性出血坏死性胰腺炎（AHNP）肺损伤中Toll-样受体（TLR）2/4mRNA表达的变化规律.方法建立AHNP肺损伤动物模型.动物分为假手术组（S组）、胰腺炎组（P组）.计算各组肺组织学评分和肺损伤指数以评价肺损伤的程度;RT-PCR方法检测不同时间点肺组织TLR2和TLR4mRNA表达的变化.结果肺组织TLR2和TLR4mRNA在S组仅有低表达,在P组3h表达开始增高,伤后6～12h该两指标表达达到峰值（P＜0.05或P＜0.01）,而S组变化不明显.结论AHNP时,肺组织内该两种基因的表达上调;肺组织内TLR2和TLR4的基因表达增高可能在AHNP肺损伤的发生、发展中起作用.

Changes of Toll-like receptor 2 and 4 gene expression in lungs with acute injury induced by acute hemorrhagic necrotizing pancreatitis in rats

Objective To investigate the changes of Toll-like receptor 2 and 4 gene expression in lungs with acute injury induced by acute hemorrhagic necrotizing pancreatitis(AHNP) in rats.Methods Forty SD male rats were randomly divided into sham-operated group(n=10),and AHNP group(n=30).Of all the rats,the lungs were dissected for lung histological scores and bronchoalveolar lavages were harvested for lung injury index.TLR2,4mRNA expression in the lungs was measured by RT-PCR at different time points.(Results) TLR2,4mRNA could be detected in lungs with low values in sham-operated group;but they were markedly increased at 3 hours in AHNP group,peaking at 6~12 hours(P<0.05 or P<0.01).(Conclusions) These data suggestal that expression of TLR2,4mRNA is increased in lung tissuse in AHNP rats,and up-regulation of TLR2,4mRNA expression in lung tissuse may be involved in the development of(acute) lung injury induced by AHNP.