中性肽链内切酶对心衰所致胸腔积液的诊断价值

目的探讨胸腔积液中性肽链内切酶(neprilysin,NEP)浓度变化及其对心衰所致胸腔积液的诊断价值。方法 88例胸腔积液住院患者纳入研究,根据病因分为心衰组胸腔积液25例,类肺炎组胸腔积液21例,结核组胸腔积液21例及肿瘤组胸腔积液21例,酶联免疫吸附法测定胸腔积液NEP浓度。结果 (1)心衰组NEP浓度显著低于其他组(P0.001),类肺炎组和肿瘤组NEP浓度无显著差异(P0.05),均显著低于结核组(P0.001)。(2)胸腔积液中NEP浓度和血清脑钠肽(brain natriuretic peptide,BNP)含量呈负相关(r=-0.570,P0.001)。(3)ROC曲线显示NEP浓度271 pg/mL为临界值诊断心衰所致胸腔积液灵敏度为76%,特异度为92.06%。胸腔积液NEP联合血清BNP诊断心衰所致胸腔积液灵敏度为98.1%,特异度为98.4%。结论心衰所致胸腔积液中NEP分泌降低,对诊断心衰有一定参考价值;胸腔积液NEP联合血清BNP可提高心衰诊断的灵敏度和特异度。     

The Sonic hedgehog signaling pathway involved in the expression of RACK1 in the pulmonary microvascular endothelial cells induced by lipopolysaccharide

正Objective To explore the effect of expression of protein kinase C receptor 1 (RACK1) induced by lipopolysaccharide (LPS) on Sonic hedgehog(SHH) signaling pathway in rat pulmonary microvascular endothelial cells(RPMVEC).Methods The healthy male SPF grade SD rat with 100-120 g body weight were gotten from the laboratory animal center of Anhui province. Using immu-