1、外源性清蛋白输入对 ARDS 小鼠 CRP 和前降钙 素影响 【摘要】 目的 了解急性呼吸窘迫综合征(ARDS)小鼠液体复苏 时给予外源性清蛋白对 C 反应蛋白(CRP) 前降钙素(PCT)以及肺湿 、 质量、干质量的影响。方法 将 108 只昆明小鼠随机分为两组,正常对 照组 12 例,腹腔注射 15 mg/kg 生理盐水;致伤组 96 例,腹腔注射内 毒素(LPS)15 mg/kg,制备 ARDS 模型。致伤组分为未治疗组和治疗 组,治疗组又分为低浓度清蛋白组(尾静脉注射 0.5 g/L 人血清清蛋
2、 白 10 mL/g 体质量) 高浓度清蛋白组(尾静脉注射 50.0 g/L 人血清 、 清蛋白 10 mL/g 体质量) 羟乙基淀粉组(尾静脉注射 60.0 g/L 羟乙 、 基淀粉 10 mL/g 体质量) 。正常对照组于注射后 4 h 断颈取血,致伤 后各组分别于注射后 4、8、16、24 h 断颈取血(每次 6 只小鼠) ,用 ELASA 法测定血清 CRP 和 PCT; 同时留取肺测湿质量、 干质量。 结果 PCT 在注射后 24 h 内随时间延长而升高, 异有显著性 H=17.97~21.60, 差 ( q
3、4.08~6.88,P<0.01) 与未治疗组比较,各治疗组 PCT 8、16、24 。 h 均下降(H=26.43~27.44,q=4.08~6.27,P<0.01) 。高浓度清蛋 白组与羟乙基淀粉组差异无显著性(P>0.05) 与未治疗组比较,低 。 浓度清蛋白组 CRP 下降(t=23.37、28.32,H=15.16、19.55, q=4.08、 4.58,P<0.01) ;高浓度清蛋白组与羟乙基淀粉组 CRP 24 h 无明显差 异(P>0.05) 。致伤组小鼠肺湿、干质量比值 4 h 上升,8 h 达到高 峰,1
4、6 h 有所下降,24 h 稍有恢复,与正常对照组比较,差异有显著 意义 H=23.15~24.70, ( q=4.28~6.87, <0.01) 结论 输入 50.0 g/L P 。 1 人血清清蛋白能降低早期 ARDS 肺含水量,降低 CRP 和 PCT,减轻炎症 反应,有助于早期 ARDS 的治疗。 【关键词】 血清白蛋白;呼吸窘迫综合征,成人;C 反应蛋白;前 降钙素 [ ABSTRACT ] ObjectiveTo investigate the effects of exogenou
5、s albumin on C-reactive protein CRP) and procalcitonin ( (PCT) and the lung wet /dry (W/D) weight in mice with acute respiratory distress syndrome ( ARDS ) . Methods This study consisted of 108 Kunming mice, which were randomized to two groups: normal control, 12 mice, 15 mg/k
6、g of normal saline and vulnerated groups(96 mice, 15 mg/kg of Endotoxin (LPS) to prepare ARDS models, both normal saline and LPS were in injected peritoneally. Treatment groups were divided into low-concentration-albumin (LCA) group (0.5 g/L of human serum albumin1
7、0 mL/g body mass), high-concentration-albumin (HCA) group (50.0 g/L of human serum albumin 10 mL/g body mass), and hydroxyethyl-starch (HS) group (60.0 g/L hydroxyethyl starch 10 mL/g body mass), the medicines were given through vena caudalis in the three groups. Blood sample
8、s were collected at 4 h after injection by breaking the neck in normal control, and at after4 h, 8 h, 16 h,and 24 h in vulnerated group (six mice per each time). Serum CRP and PCT were determined by ELASA, 2 and lungs were detected for wet /dry weight. [ Results[ PCT
9、 increased with the extension of the time within 24 h, the differences were significant ( H=17.97-21.60,q=4.08-6.88,P<0.01 ) . Compared with the untreated group, that of treated groups decreased at8 h, 16 h, and 24 h (H=26.43-27.44,q=4.08-6.27,P<0.01). No differ
10、ence was found between HCA group and HS group (P>0.05). Compared with the untreated group, the PCT in LCA group declined ( t=23.37,28.32;H=15.16,19.55;q=4.08, 4.58;P<0.01 ) ; the difference of CPR between HCA group and HS group at 24 h was not significant (P>0.
11、05) W/D of the lungs in vulnerated group reached the top at 8 h and somewhat lowered at 16 h then recovered slightly at 24 h, the difference was significant as compared with the control(H=23.15-24.70,q=4.28-6.87,P<0.01) Conclusion . 50.0 g/L albumin can reduce lung wet /dry
12、 weight in early stage of ARDS, lower CRP and PCT, relieve inflammation and conduce to early treatment of ARDS. [KEY WORDS]Serum albumin; Respiratory distress syndrome, adult; C-reactive protein; Procalcitonin 急性肺损伤(ALI)是一种多病因导致的综合征,有可能发展为 急性呼吸窘迫综合征(ARDS) ARDS 早期的特征性表现为肺毛细血管 。 内皮细胞与肺泡上皮细胞屏障的通透性增高,肺泡与肺间质内积聚大 3






