This study investigated the feasibility and effects of organ bath to be used for detection of bronchial function of non-heart-beating donor (NHBD) lung after 1-h warm ischemia. Sixteen Swed-ish pigs were divided into ...This study investigated the feasibility and effects of organ bath to be used for detection of bronchial function of non-heart-beating donor (NHBD) lung after 1-h warm ischemia. Sixteen Swed-ish pigs were divided into two groups randomly: heart-beating donor (HBD) group and NHBD with 1-h warm ischemia (NHBD-1 h) group. The bronchial rings whose lengths and inner diameters were both 1.5 mm were obtained from isolated left lungs of all the pigs. Acetylcholine, arachidonic acid natrium and papaverine were used to test and compare the contractile and relaxant function of bron-chial smooth muscles and epithelium-dependent relaxation (EpiDR) response between HBD and NHBD-1 h groups. The results showed that there was no significant difference in the values of bron-chial precontraction between HBD and NHBD-1 h groups (5.18±0.07 vs 5.10±0.11 mN, P>0.05). No significant difference in the values of EpiDR responses between HBD and NHBD-1 h groups (1.26±0.05 vs 1.23±0.07 mN, P>0.05) was observed either. During the process of EpiDR induction, the rings had no spontaneous relaxation in two groups. In addition, papaverine solution completely relaxed the bronchial smooth muscles of all bronchial rings. It was concluded that after warm ische-mia for 1 h, the contractile and relaxant abilities of bronchial smooth muscles, and the epithe-lium-dependent adjustment both kept intact. Organ bath model could be a liable and scientific way to evaluate the bronchial function of NHBD lung.展开更多
文摘目的探讨17β-雌二醇(E2)对人羊膜细胞内β-防御素-4(HBD-4)基因表达的影响。方法体外培养的人羊膜细胞内添加17β-雌二醇(2n M)培养4h、8h、12h、24h,同时各时间点设相应的对照组(Control组),通过real-time RT-PCR技术检测17β-雌二醇对人羊膜细胞内HBD-4 m RNA的表达变化的影响。结果 17β-雌二醇可上调人羊膜细胞中HBD-4 m RNA的表达(P<0.05)。结论 HBD-4在女性妊娠期羊膜细胞宿主免疫防御中起着重要的作用。
文摘This study investigated the feasibility and effects of organ bath to be used for detection of bronchial function of non-heart-beating donor (NHBD) lung after 1-h warm ischemia. Sixteen Swed-ish pigs were divided into two groups randomly: heart-beating donor (HBD) group and NHBD with 1-h warm ischemia (NHBD-1 h) group. The bronchial rings whose lengths and inner diameters were both 1.5 mm were obtained from isolated left lungs of all the pigs. Acetylcholine, arachidonic acid natrium and papaverine were used to test and compare the contractile and relaxant function of bron-chial smooth muscles and epithelium-dependent relaxation (EpiDR) response between HBD and NHBD-1 h groups. The results showed that there was no significant difference in the values of bron-chial precontraction between HBD and NHBD-1 h groups (5.18±0.07 vs 5.10±0.11 mN, P>0.05). No significant difference in the values of EpiDR responses between HBD and NHBD-1 h groups (1.26±0.05 vs 1.23±0.07 mN, P>0.05) was observed either. During the process of EpiDR induction, the rings had no spontaneous relaxation in two groups. In addition, papaverine solution completely relaxed the bronchial smooth muscles of all bronchial rings. It was concluded that after warm ische-mia for 1 h, the contractile and relaxant abilities of bronchial smooth muscles, and the epithe-lium-dependent adjustment both kept intact. Organ bath model could be a liable and scientific way to evaluate the bronchial function of NHBD lung.
