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血必净对脓毒症大鼠血清内毒素与脾脏特异性免疫功能的影响

时间:2010-08-24 09:08:43  来源:  作者:

The effect of Xue Bijing to level of serum endotoxin and specific immunological function of spleen in rats with sepsis.

Zhang Shuwen, Sun Chendong   Department of infection, Beijing Friendship Hospital affiliate of Capital University of Medical Sciences , Beijing,100050,China

    [abstract] Object To study the characteristic change of serum esotoxinHLA-DRlymphopoiesis and expression of Caspase3 of spleen in different sepsis rats . Methed we produce sepsis model by cecal ligation puncture. ;to divide into four groups and sampling blood in 3,24.72h after built modol,, Compared the change  between groups. we employed matrix manifest to examine the level of serum endotoxin, examined the fluorescent strength expression level of spleen lymphocyte HLA-DR by FACS flow cytometer, employed the immuno- histochemistry to examine the positive expression of Caspase3 in spleen, examined the lymphopoiesis by method of MTT. Rsult The result showed that Xue Bingjing can significantly cut down the level of serum endotoxin and the expression of Caspase3 in spleen lymphocyte , It can significantly advance the level of lymphopoiesis and percentage of HLA-DR. Conclusion The sepsis rats is in a chaos of immunological function, specific immunological function is in a state of Suppression, however no- specific immunological function is in a state of excited .Xue Bijing can obviously change the sepsis ras’ the immunization.

    [key words] sepsis; Xue bingjing; endotoxin; HLA-DR; Caspase3; lymphopoiesis

 

目前,脓毒症(sepsis)仍是重症加强治疗病房(icu)中患者死亡的主要原因。随着对脓毒症致病机制和宿主对脓毒症反应基因学基础的研究,人们逐渐认识到机体免疫状态紊乱在脓毒症发生发展中起着重要的作用。血必净注射液在临床应用中己取得了良好的效果,本实验主要观察血必净注射液对脓毒症大鼠特异性免疫功能的影响。

1试验材料与实验方法

1.1试验材料:体重270~290g的雄性SD大鼠,购买于北京市实验动物供应中心;血必净为天津红日药业生产,批号为:041202;利复星为北京双鹤药业生产,批号为:0503112内毒素试剂盒(上海伊华医学科技有限公司),批号20050402;大鼠TNF-a试剂盒(RapidBio Lab Calabassas California USA,批号11040502);大鼠IL-10试剂盒(RapidBio Lab Calabassas California USA,批号11040502);国产B600型低速离心机。BD公司生产的流式细胞仪(型号FACSC alibur)试剂:BD pharminger 公司:.R-PE标记的小鼠IgG1-PE同型对照;FITC标记小鼠抗大鼠CD3percp标记的小鼠抗大鼠CD8R-PE标记的小鼠抗大鼠INF-rR-PE标记的小鼠抗大鼠IL-4

1.2试验方法:

1.2.1动物模型的建立及分组:

   实验室室温2426℃。实验动物饲养3d以上,术前称重,大鼠采用0.1%戊巴比妥钠按照0.4ml/100g剂量腹腔注射麻醉后,沿腹正中线作一1.5cm长的切口,在血管弓内结扎末端12盲肠,用7头号皮针头在盲肠上穿通2次形成盲肠漏,然后将盲肠还纳腹腔,10号丝线逐层缝合腹壁切口,术毕,立即皮下注射林格平衡液50ml/kg抗休克,对照组动物只开腹、关腹与复苏,但盲肠不结扎与穿孔,动物随机分为4组:正常对照组(18)、脓毒症模型组(18只)和利复星组(18),血必净组(18只)每只大鼠于晨8时给予食物20g,自由饮水。各组大鼠观察至32472小时时相点处死,分别留取血液与组织标本待测。

1.2.2给药方法:

   术前半小时给药一次,后每日同时间给药,假手术组、模型组給予等容量的生理盐水,各组按照1ml/100g的容量给药,每天一次。

1.2.3指标项目及检测方法

   处死取动物后取血清应用改良的基质显色法检测血清中的内毒素水平,处死动物无菌取动物脾脏,应用流式细胞仪监测HLA-DR水平。脾细胞制备及增殖测定:MTS-PMS 法。用完全RPMI-1640 培养液调整细胞密度为2×106/ml。于96孔细胞培养板中加入脾细胞悬浮液。除阴性对照孔外,其余各孔均加入终浓度5g/mlConA。脾细胞加ConA的孔为阳性对照孔,试验孔在此基础上再加入10l已稀释的酪蛋白酶解产物。阴性对照孔、阳性对照孔和试验孔各设3个重复孔。混匀后,将96孔细胞培养板放入375CO2饱和湿度培养箱中培养。72h后,每孔加20lMTS-PMS混合液,37显色4h,用酶标仪于520nm下测定OD值。Casepse3我们应用免疫组化的方法进行检测脾石蜡切片的阳性表达,引用image-pro软件分析测定免疫组化的阳性面积与阳性指数,阳性指数=阳性面积×平均光密度。

1.3统计学处理

   实验数据用SPSSl1.0软件包进行统计处理。统计学方法:所有数据(x±s)表示,方差齐、数据成正态分布者,计量资料采用方差分析,组间比较采用q检验,计数资料采用卡方检验;如果数据分布不正态,或方差不齐,采用秩和检验。以p<0.05为差异具有显著性。

2.结果

   2.1不同组别各时间段内毒素含量的比较

   3小时时模型组与各组比较内毒素明显上升,利复星比血必净组有所升高,但无统计学意义(p=0.068,与正常组比较各组均明显升高。24小时模型组仍然明显升高,与利复星组比较血必净组与正常组明显下降(p=0.012),正常组与血必净组比较无显著意义(p=0.809)。72小时模型组内毒素仍然保持高水平(p=0.000),较其他组明显升高,与利复星比较正常组与血必净组明显降低(p=0.000),正常组与血必净比较无显著意义(p=0.395)。

1 不同组别各时间段内毒素含量的比较

        时间

组别

3h

24h

72h

正常组

0.015±0.003

0.034±0.024

0.028±0.016

模型组

0.235±0.075

0.282±0.116

0.230±0.068

利复星组

0.137±0.067

0.147±0.047

0.079±0.008

血必净组

0.080±0.016

0.043±0.034

0.046±0.013

参考文献

    1. Angus DC, Linde-Zwirble WT, Lidicker J, et al. Epidemiology of severe sepsis in the United State , analysis of incidence ,outcome, and associated cost of care]J]. Crit Care Med , 2001 , 29, 1303-1310.

    2. Brun- Buisson. The epidemiology of the systemic inflammatory response [J] .Intensive Care Med, 2000,26(Suppl1):S64-S74.

    3.Parillo JE. New Engl J Med,1993,328:1471 1477.

    4.Yamaguchi K, Majima M, Katori M, et al.Shock,2000,14(5):53

    5.Volk H D, Reinke P, Docke WD. Immunological monitoring of the  inflammatory process: which variables ?When to assess? Eur J Surg Suppl, 1999,584:70 72.

    6.Smith BR, Ault KA. Increase of surface Ia- like antigen expression onhuman monocyte sindependent of antigenic stimuli. J Immunol , 1981,127:2020- 2027.

    7.Cheadle WG, Hershman MJ,Wellhausen SR ,et al.HLA-DR antigen expression on peripheral blood monocytes correlates with surgical infection. Am J Surg,1991,161:639 642.

    8.Wolk K, Docke WD,Von Baaehr V, et al. Impaired antigen presentation by human monocytes during endotoxin tolerance. Blood,2000,96:218 -223.

    9.Volk H D, Reinke P ,Krausch D.Monocyte deactivation rationale for a new therapeutic strategy in sepsisJ.Intensive Care Med,1996,22:1-8.10. Fukuzuka K, Rosenberg J , Gaines GC , et al. Caspase23 dependent organ apoptosis early after burn injury. Ann Surg , 1999 ; 229 : 851- 858.

    10. Ayala A , Herdon CD , Lehman DL , et al. Differential induction of apoptosis in lymphoid tissues during sepsis : variation in onset , frenquency , and the nature of the mediators. Blood , 1996 ; 87 : 4261 –4275.

    11. Hotchkiss RS , Swanson PE , Freeman BD , et al. Apoptotic cell death in patients with sepsis , shock multiple organ dysfunction. Crit Care Med , 1999 ; 27 : 1230 - 1251.

    12. Tannahill CL , Fukuzuka K, Marum T , et al. Discordant tumor necrosis factor2alpha superfamily gene expression in bacterial peri2tonitis and endotoxemic shock. Surgery , 1999 ; 126 : 349 - 357.

    13 Ertel W, Keel M , Stocker R , et al. Detectable concentrations of Fas ligand in cerebrospinal fluid after severe head injury. J Neu2 roimmunol , 1997 ; 80 : 93 - 96.

    14. MatuteBello G, Liles WC , Steinberg KP , et al. Soluble Fas ligand induces epithelial cell apoptosis in humans with acute  lung injury  (ARDS) . J Immunol , 1999 ; 163 : 2217 - 2225.

    15. Ayala A , Chung CS , Xu YX , et al. Increased inducible apoptosis in CD4 + T lymphocytes during polymicrobial sepsis is mediated by Fas ligand and not endotoxin. Immunology , 1999 ; 97 : 45 - 55.

    16.Woodside K J, Spies M ,Wu Xiaowu, et al. Decreased lymphocyte apoptosis by anti-tumor necrosis factor antibody in Peyer"s patches after severe burnJ.Shock, 2003,20(1):7073.

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