【摘要】 目的 觀察機械通氣對黏蛋白(mucin,MUC)-5AC表達的影響及復方川貝精片的干預作用。 方法 新西蘭兔25只,6個月齡,雄性;隨機分為對照組、機械通氣12 h組及復方川貝精片低、中、高劑量組。收集支氣管灌洗液,分別采用實時熒光定量聚合酶鏈式反應法和酶聯免疫吸附試驗檢測支氣管灌洗液中p38 MAPK mRNA,MUC-5AC蛋白和mRNA的表達。 結果 機械通氣能增強MUC-5AC的分泌(Plt;0.05);加用復方川貝精片能降低機械通氣后MUC-5AC蛋白和mRNA的表達(Plt;0.05);復方川貝精片中、高劑量組與低劑量組比較,能降低機械通氣后MUC-5AC蛋白和mRNA的表達(Plt;0.05)。 結論 機械通氣能促進支氣管黏膜上皮細胞分泌MUC-5AC,復方川貝精片能抑制機械通氣所致MUC-5AC表達升高,其機制可能與其抑制p38 MAPK表達有關。【Abstract】 Objective To observe the effect of mechanical ventilation by breathing machine on the expression of mucin (MUC-5AC) and the interfering effect of compound tablet of fritillary bulb. Methods New Zealand Rabbits were randomly divided into control group, twelve-hour mechanical ventilation group, and low, medium and high-dose compound tablet of fritillary bulb group. Contents of p38 MAPK mRNA, MUC-5AC mRNA and protein in bronchial irrigating solution were detected by realtime RT-PCR and ELISA methods. Results Mechanical ventilation could increase the expression of MUC-5AC in bronchial irrigating solution (Plt;0.05). Compound tablet of fritillary bulb could decrease the expression of MUC-5AC mRNA and protein after mechanical ventilation (Plt;0.05). Compared with low-dose compound tablet of fritillary bulb group, the expression of MUC-5AC mRNA and protein was lower for the high and medium-dose groups (Plt;0.05). Conclusions Mechanical ventilation can promote the expression of MUC-5AC in bronchial endothelial cells, which can be suppressed by compound tablet of fritillary bulb. This may be due to the suppression effect of p38 MAPK expression.
目的 觀察噻托溴銨治療慢性阻塞性肺疾病急性加重期(AECOPD)臨床療效與安全性。 方法 選取 2010 年 1 月-2011年12月入院的69例AECOPD 患者隨機分為試驗組(A組,n=36)和對照組(B組,n=33),A組在B組常規治療的基礎上吸入噻托溴銨。治療起始及結束分別觀察兩組肺功能指標、慢性阻塞性肺疾病評估測試(CAT)評分、血氣分析、6分鐘步行距離、住院時間及藥物不良反應。 結果 兩組均顯示出一定的臨床效果,A組治療后肺功能指標、CAT評分、血氣分析、6分鐘步行距離均優于B組,差異均具有統計學意義(P<0.05)。A組住院時間短于B組(P<0.05),且無嚴重不良反應。 結論 AECOPD患者在常規治療同時吸入噻托溴銨,療效顯著且臨床安全性較高。