摘要信息:方案名称:西维来司他钠对肝移植患者序贯性器官功能衰竭评分的影响:一项非随机、双向队列研究 研究目的:观察西维来司钠对肝移植患者序贯性器官功能衰竭评分的影响 研究设计:单中心、双向队列研究 样本量:共45例 ,其中40例回顾,5例前瞻 给药方案: 疗程:术中持续给药至拔管后48h(不使用乌司他丁) 给药方案:0.2mg/kg/h持续静脉泵入 治疗期: (1)试验组: 西维来司他钠+常规治疗 (2)对照组: 常规治疗 纳入标准: (1)年龄≥18岁且≤75岁,性别不限; (2)终末期肝病(非肝癌)进行肝移植的患者; (3)患者或家属对本次试验目的和意义有充分了解,自愿参加本次临床试验,并签署知情同意书。 排除标准: 有以下情况之一者不能入选本试验: (1)妊娠期或哺乳期女性; (2)预期生存时间少于48h; (3)合并慢性呼吸系统疾病(如慢性阻塞性肺疾病、慢性肺气肿等)的患者; (4)合并其他恶性肿瘤的患者; (5)对本品过敏者; (6)拒绝参加本研究或已参加其他研究者; (7)经研究者判定不适合入选的其它情况。 观察指标及评价时间点: 终点指标 主要终点指标: 入组第0、1、2、3、5、7、14天SOFA评分 次要终点指标: (1)入组第0、1、2、3、5、7、14天:炎症因子水平(WBC、NEU%、CRP、PCT、IL-6、IL-10、IL-17、干扰素-γ、TNF-α);APACHE II评分; (2)入组第1、3、7天血浆中NE的含量; (3)器官支持天数; (4)入组后截至转出ICU的氧合指数(PaO2/FiO2); (5)根据KDIGO(肾脏疾病:改善全球结局)标准的AKI发生率; AKI定义为以下任意一种情况: a.48 小时内血清肌酐增加 ≥0.3mg/dL(>26.5µmol/L); b.血肌酐在 7 天内升高达基础值的≥1.5 倍; c.尿量<0.5ml/(kg·h),持续6小时; (6)术中再灌注后综合征发生率(再灌注后综合征定义为再灌注后5分钟内,持续至少1分钟平均动脉压低于基线值>30%(Aggarwal标准)); (7)肝移植后90天的患者生存率; (8)血常规(血红蛋白)、肝肾功能(AST、ALT、碱性磷酸酶、γ-谷氨酰转移酶、总胆红素、肌酐、尿素氮、尿酸)、凝血功能(APTT、PT、D-二聚体)、铁蛋白、血气分析(乳酸); 安全性指标 (1)生命体征:心率、血压(SBP/DBP/MAP)、呼吸频率、呼吸支持模式、呼吸机参数、SpO2、(同时记录吸入氧浓度)和体温; (2)体格检查; (3)胸片或胸部CT检查; (4)不良事件。
摘要信息:Background:Neutrophil infiltration plays a critical role in the pathogenesis of acute lung injury following liver transplantation (LT). Neutrophil elastase is released from neutrophils during pulmonary polymorphonuclear neutrophil activation and sequestration. The aim of the study was to investigate whether the inhibition of neutrophil elastase could lead to the restoration of pulmonary function following LT. Methods:In in vivo experiments, lung tissue and bronchoalveolar lavage fluid (BALF) were collected at 2, 4, 8, and 24 h after rats were subjected to orthotopic autologous LT (OALT), and neutrophil infiltration was detected. Next, neutrophil elastase inhibitors, sivelestat sodium hydrate (exogenous) and serpin family B member 1 (SERPINB1) (endogenous), were administered to rats before OALT, and neutrophil infiltration, pulmonary oxidative stress, and barrier function were measured at 8 h after OALT. Results:Obvious neutrophil infiltration occurred from 2 h and peaked at 8 h in the lungs of rats after they were subjected to OALT, as evidenced by an increase in naphthol-positive cells, BALF neutrophil elastase activity, and lung myeloperoxidase activity. Treatment with neutrophil elastase inhibitors, either sivelestat sodium hydrate or SERPINB1, effectively reduced lung naphthol-positive cells and BALF inflammatory cell content, increased expression of lung HO-1 and tight junction proteins ZO-1 and occludin, and increased the activity of superoxide dismutase. Conclusion:Neutrophil elastase inhibitors, sivelestat sodium hydrate and SERPINB1, both reduced lung neutrophil infiltration and pulmonary oxidative stress and finally restored pulmonary barrier function.