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中国临床药理学与治疗学 ›› 2005, Vol. 10 ›› Issue (3): 314-317.

• 研究原著 • 上一篇    下一篇

小剂量CpG ODN 预处理对细菌脓毒症小鼠的保护作用及其机制探索

刘玮, 周红, 丁国富, 鲁永玲, 王良喜, 罗平   

  1. 第三军医大学基础部药理学教研室, 重庆400038
  • 收稿日期:2004-12-30 修回日期:2005-02-02 出版日期:2005-03-26 发布日期:2020-11-18
  • 通讯作者: 周红, 女, 教授, 博士生导师, 研究方向:抗炎免疫药理学和多肽与寡核苷酸药物研究。Tel:023-68752266 E-mail:zhouh64@mail.tmmu.com.cn
  • 作者简介:刘玮, 男, 硕士研究生, 研究方向:抗炎免疫药物的开发。Tel:023-68752265 E-mail:jackmoon188@sohu.com

Protective effects of CpG oligonucleotide on mice with bacterial sepsis and its mechanism

LIU Wei, ZHOU Hong, DING Guo-fu, LU Yong-ling, WANG Liang-xi, LUO Ping   

  1. Department of Pharmacology, the Third Military Medical University, Chongqing 400038, China
  • Received:2004-12-30 Revised:2005-02-02 Online:2005-03-26 Published:2020-11-18

摘要: 目的:研究CpG ODN 对细菌脓毒症小鼠的保护作用及其部分作用机制。方法:建立细菌脓毒症小鼠模型, 给予不同剂量的CpG ODN 后, 再给予热灭活E.coli 攻击小鼠, 观察各组小鼠的死亡情况;有效剂量的灭活E.coli 攻击小鼠后收集血清, 测定血清中TNF-α浓度。结果:10 mg°kg-1 CpG ODN 预处理小鼠, 可缩短灭活E.coli 攻击后小鼠的死亡时间;提前给予3 d 2 mg°kg-1 CpG ODN, 能提高灭活E.coli 攻击小鼠的存活率;CpG ODN 预处理能有效抑制细胞因子TNF-α的释放。结论:适当剂量的CpG ODN 预处理对灭活E.coli 攻击小鼠具有保护作用, 其机制可能与抑制Th1 型细胞因子TNF-α的释放有关。

关键词: CpGODN, 灭活E.coli, 细菌脓毒症, TNF-α, ELISA

Abstract: AIM: To investigate the protective effects and mechanisms of CpG ODN on mice with bacterial sepsis.METHODS: The mice with bacterial sepsis were injected with CpG ODN before infected by inactivated Escherichia coli to observe the protective role of CpG ODN. The serum TNF-αwas tested.RESULTS: Adequate dosage (2.5 mg°kg-1) of CpG ODN protected mice from lethal challenge by inactivated Escherichia coli in a dose and time dependent manner.CpG ODN inhibited the release of TNF-αinduced by inactivated Escherichia coli. CONCLUSION: The potent anti-inflammatory effect of CpG ODN on mice with bacterial sepsis.The mechanism may be related to CpG ODN inhibiting the release of TNF- αinduced by inactivated Escherichia coli.

Key words: CpG ODN, bacterial sepsis, inactivated Escherichia coli, TNF-α, ELISA

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