极化液对严重烫伤伴多器官功能障碍综合征大鼠炎性细胞因子水平及预后的影响

目的观察早期极化液治疗对烫伤伴多器官功能障碍综合征(MODS)大鼠炎性细胞因子水平及预后的影响,探讨其防治机制。方法将120只SD大鼠造成30%TBSAⅢ度烫伤,伤后2h腹腔注射内毒素,制作烫伤伴MODS大鼠模型,随机分为极化液组、葡萄糖组和盐水组,每组40只。观察3组大鼠伤后1~7d血浆中血糖、乳酸、肿瘤坏死因子α(TNF-α)、一氧化氮(NO)以及白细胞介素6(IL-6)含量的变化;并计算伤后7d内各组大鼠的死亡率。结果极化液组大鼠伤后1~7d血糖、乳酸、TNF-α、IL-6和NO含量均明显低于其他组(P<0.01),伤后6~7d其TNF-α、IL-6和NO含量达到最低值,分别为(2.37±0.54)μg/L、(0.28±0.17)μg/L及(29±9)μmol/L;葡萄糖组血糖、乳酸含量明显高于盐水组(P<0.01),而两组TNF-α、IL-6和NO含量相近(P>0.05).极化液组伤后7d内死亡率为20.0%,明显低于葡萄糖组与盐水组(分别为37.5%、47.5%,P<0.05).结论极化液通过改善烫伤引起的糖代谢障碍,降低机体炎性细胞因子水平,可作为防治烫伤伴MODS的辅助措施。

Influence of glucose-insulin-potassium on the levels of inflammatory cytokines and prognosis of MODS in the scalded rats

OBJECTIVE: To evaluate the influence of glucose-insulin-potassium treatment (GIK) on the levels of inflammatory cytokines in the scalded rats with MODS. METHODS: One hundred and twenty Sprague Dawley rats were inflicted with 30% TBSA full-thickness scalding, and MODS model was reproduced with intraperitoneal injection of endotoxin following burn injury. Then the rats were randomly divided into GIK, glucose (G) and control (C) groups, with 40 rats in each group. The serum contents of glucose, lactate acid, TNF-alpha, NO and IL-6 of the rats in the three groups were determined during 1 to 7 PSD, and the mortality rate within 7 PSD was observed. RESULTS: The serum contents of glucose, lactate acid, TNF-alpha, NO and IL-6 of the rats in the GIK group were obviously lower than those in the other two groups during 1 to 7 PSD (P < 0.01), and reached the lowest level at 6 to 7 PSD (TNF-alpha: 2.37 +/- 0.54 microg/L; IL-6: 0.28 +/- 0.17 microg/L; NO: 29 +/- 9 micromol/L). The content of glucose and lactate acid in G group were obviously higher than those in control group (P < 0.01), but the contents of TNF-alpha, IL-6 and NO content were similar between these two groups (P > 0.05). The mortality in GIK group within 7 PSD was 20.0%, which was evidently lower than that in G (37.5%) and C (47.5%) groups (P < 0.05), while that between G and C groups was similar (P > 0.05). CONCLUSION: The administration of GIK might ameliorate sepsis by reducing the levels of inflammatory cytokine after burns and endotoxin challenge.