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中国临床药理学与治疗学 ›› 2004, Vol. 9 ›› Issue (2): 184-188.

• 研究原著 • 上一篇    下一篇

大鼠急性肠炎早期核因子-κB 活化以及吡咯烷二硫氨基甲酸的抗炎作用

陈垦, 龙友明1, 兰雷1, 郑吉顺2, 王晖3   

  1. 广东药学院临床医学系, 广州 510224, 广东;
    1广东医学院附属医院, 湛江 524001, 广东;
    2合肥市第一人民医院, 合肥 230001, 安徽;
    3广东医学院药理学教研室, 湛江 524023, 广东
  • 收稿日期:2003-07-03 修回日期:2003-08-29 出版日期:2004-02-26 发布日期:2020-11-16
  • 通讯作者: 陈垦,男, 硕士生导师, 从事消化病学临床与基础研究。Tel:13544371363 E-mail: chenkenck@tom.com
  • 基金资助:
    广东医学科学基金项目(NO.A2003554)

Activation of NF-κB and anti-inflammation mechanism of pyrrolidine dithiocarbamate in rats with acute colitis

CHEN Ken, LONG You-Ming1, LAN Lei1, ZHENG Jie-Shun2, WANG Hui3   

  1. Department of Clinical Medicine Science, Guangdong College of Pharmacy, GungZhou 510224, Guangdong, China;
    1Affiliated Hospital, Guangdong Medical College, Zhanjiang 524001, Guangdong, China;
    2Hefei First People' s Hospital, Hefei 230001, Anhui, China;
    3Department of Pharmacology, Guangdong Medical College, Zhanjiang 524023, Guangdong, China
  • Received:2003-07-03 Revised:2003-08-29 Online:2004-02-26 Published:2020-11-16

摘要: 目的: 探讨NF-κB 在三硝基苯磺酸(TNBS) 乙醇所致的大鼠结肠炎的早期活化情况;吡咯烷二硫氨基甲酸(PDTC) 在该模型中的抗炎作用。方法: TNBS 乙醇灌肠建立大鼠急性结肠炎的模型, 造模前30 min 经腹腔分别注射不同剂量的PDTC(10, 25,50, 100 mg·kg-1), 设立空白对照, 模型对照组。造模后4 h 处死大鼠, 观察结肠大体形态、湿干比及组织学改变, EMSA 法测定NF-κB 的DNA 结合活性, 并检测组织中MPO 、SOD 、MDA 变化。结果: TNBS 乙醇造模后大鼠结肠组织中NF-κB 早期活化, PDTC 能减轻TNBS 乙醇所致炎症, 湿干比下降, 组织学评分减少, MPO, MDA 值下降, 与所用剂量正相关, 但上述作用不通过阻断NF-κB 途径。结论: NF-κB 在TNBS乙醇结肠炎早期迅速活化, 可能是机体一种早期抗损伤的自我防御事件, PDTC 能够在早期减轻TNBS乙醇性结肠炎。

关键词: 大鼠, 模型, 核因子, 结肠炎, 2, 4, 6-三硝基苯磺酸

Abstract: AIM: To investigate DNA-binding activity of nuclear factor kappa B (NF-κB) and pyrrolidine dithiocarbamate (PDTC) anti-inflammation effect and mechanism in trinitrobenzene sulfonic acid (TNBS)-induced acute colitis in rats.METHODS: Acute colitis was induced by instilling TNBS ethanol into the lumen of the rat colon.Rats were randomized into PDTC-treat group (including group P10, P25, P50, P100), TNBS ethanol group and normal control group.The rats in PDTC-treated group were injected intraperitoneally with PDTC at the dosages of 10, 25, 50, and 100 mg·kg-1, respectively.Rats were killed at 4 h after enema.Colonic inflammation, the ratio of wet dry weight andMPO, SOD, andMDA activity were detected.DNA-binding activity of NF-κB was assessed by EMSA.RESULTS: NF-κB activity in colon homogenate was increased markedly at acute colitis in rats.PDTC attenuates the development of rat colonic inflammation but not by reducing the NF-κB activity.CONCLUSION: NF-κB is activated in rats with acute colitis, which may be a mechanism of self-protection. PDTC can attenuate the development of inflammation.

Key words: rats, model, nuclear factor, colitis, trinitrobenzene sulfonic acid

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