施普善对脓毒症大鼠脑保护作用的实验研究

目的 探讨施普善对脓毒症大鼠的脑保护作用及可能的机制.方法 选用96只清洁级雄性SD大鼠,按照完全随机数字表法分为对照组、脓毒症组、施普善高剂量治疗组、施普善低剂量治疗组,每组又分别按造模后不同时间分为3 h、6 h、24 h组,每组8只.脓毒症组及施普善治疗组通过腹腔注射格兰氏阴性菌脂多糖(LPS)溶液(剂量为10mg/kg)建立脓毒症大鼠模型,对照组不造模.治疗组造模后立即按高剂量组215.2mg/kg、低剂量组107.6mg/kg腹腔注射施普善(生理盐水稀释至7.5 mL),对照组和脓毒症组注射与施普善等量生理盐水.在造模后3 h、6 h、24 h抽取各组大鼠颈内静脉和腹主动脉血测定乳酸(LA)及血清超氧化物岐化酶(SOD)、丙二醛(MDA)、S100B含量.结果 与脓毒症组比较,施普善高、低剂量治疗组LA、S100B蛋白、MDA含量明显下降,SOD含量明显上升,差异有统计学意义(P＜0.05).其中高剂量治疗组各项指标较低剂量组更趋于正常,差异有统计学意义(P＜0.05).结论 施普善对脓毒症大鼠大脑具有一定的保护作用,其机制可能与施普善改善脑细胞能量代谢,降低颅内LA、S100B蛋白含量及抗自由基损伤有关,并且这种作用呈剂量依赖性.

Abstract：

Objective To investigate the protective effect of cerebrolysin on cerebral injury in septic rats, and the possible mechanism of such effect. Methods Ninety-six SD rats were equally randomized into control group, sepsis group, high-dose cerebrolysin treatment group and low-dose cerebrolysin treatment group (n=24). And each group was sub-divided into groups of 3, 6 and 24 h after the success of model making (n=8). The septic rat models in the sepsis group and cerebrolysin treatment groups were induced by intraperitoneal injection of lipopolysaccharide (LPS, 10 mg/kg); cerebrolysin (215.2 mg/kg and 107.6 mg/kg), diluted with physiological saline into 7.5 mL, was also intraperitoneally administered in the 2 treatment groups, respectively; and same milliliter of physiological saline was administered into the sepsis group and control group. Blood samples via jugular vein and ventral aorta in the groups of 3, 6 and 24 h after the success of model making were obtained to measure the levels of blood lactate (LA), superoxide dismutase (SOD), malondialdehyde (MDA) and S100B. Results As compared with the sepsis group, cerebrolysin treatment groups enjoyed significantly lower levels of LA,MDA and S100B protein, obviously higher level of SOD in serum (P＜0.05); these levels in the high-dose cerebrolysin treatment group were much closer to the normal levels than those in the low-dose cerebrolysin treatment group (P＜0.05). Conclusion Cerebrolysin has a protective effect on cerebral injury in septic rats through decreasing the levels of LA and S100B protein, improving energy metabolism of brain cells, and counteracting free radical damage; this effect is dose-dependent.

Neuroprotective effect of cerebrolysin on cerebral injury in septic rats

Objective To investigate the protective effect of cerebrolysin on cerebral injury in septic rats, and the possible mechanism of such effect. Methods Ninety-six SD rats were equally randomized into control group, sepsis group, high-dose cerebrolysin treatment group and low-dose cerebrolysin treatment group (n=24). And each group was sub-divided into groups of 3, 6 and 24 h after the success of model making (n=8). The septic rat models in the sepsis group and cerebrolysin treatment groups were induced by intraperitoneal injection of lipopolysaccharide (LPS, 10 mg/kg); cerebrolysin (215.2 mg/kg and 107.6 mg/kg), diluted with physiological saline into 7.5 mL, was also intraperitoneally administered in the 2 treatment groups, respectively; and same milliliter of physiological saline was administered into the sepsis group and control group. Blood samples via jugular vein and ventral aorta in the groups of 3, 6 and 24 h after the success of model making were obtained to measure the levels of blood lactate (LA), superoxide dismutase (SOD), malondialdehyde (MDA) and S100B. Results As compared with the sepsis group, cerebrolysin treatment groups enjoyed significantly lower levels of LA,MDA and S100B protein, obviously higher level of SOD in serum (P＜0.05); these levels in the high-dose cerebrolysin treatment group were much closer to the normal levels than those in the low-dose cerebrolysin treatment group (P＜0.05). Conclusion Cerebrolysin has a protective effect on cerebral injury in septic rats through decreasing the levels of LA and S100B protein, improving energy metabolism of brain cells, and counteracting free radical damage; this effect is dose-dependent.