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中国临床药理学与治疗学 ›› 2005, Vol. 10 ›› Issue (12): 1344-1348.

• 研究原著 • 上一篇    下一篇

5-氨基水杨酸治疗结肠炎的抗氧化作用及对细胞因子表达的影响

张林, 夏冰, 程虹   

  1. 武汉大学中南医院内科, 武汉大学医学院消化系病研究中心,过敏与免疫相关疾病重点实验室, 武汉 430071, 湖北
  • 收稿日期:2005-09-24 修回日期:2005-10-31 出版日期:2005-12-26 发布日期:2020-11-11
  • 作者简介:张林,男,硕士研究生,研究方向:炎症性肠病。Tel:13036139553E-mail:zhanglin116@sina.com
  • 基金资助:
    湖北省科技攻关资助项目(No2003AA301C08)

Effect of 5-aminosalicylic acid on antioxidant mechanism and attenuation of proinflammatory cytokines in trinitrobenzene sulfonic acid-induced coli-tis in rats

ZHANG Lin, XIA Bing, CHENG Hong   

  1. Department of Internal Medicine,Zhongnan Hospital,Wuhan University School of Medicine,Wuhan 430071,China
  • Received:2005-09-24 Revised:2005-10-31 Online:2005-12-26 Published:2020-11-11

摘要: 目的: 探讨5-氨基水杨酸(5-ASA) 灌肠治疗对三硝基苯磺酸(TNBS) 诱导大鼠结肠炎的抗氧化作用及对细胞因子表达的影响。方法: 建立 TNBS 结肠炎模型,给予 5-ASA 灌肠治疗,同时设正常对照组和模型组 。于治疗后 1、2 周,评价结肠大体 、组织学损伤及髓过氧化物酶(MPO) 活性,检测超氧化物歧化酶(SOD) 活性 、丙二醛(MDA) 水平,逆转录-多聚酶链反应(RT-PCR) 检测结肠组织白细胞介素(IL)-1β和肿瘤坏死因子(TNF)-αmRNA 表达水平 。结果: 5-ASA 灌肠治疗能明显降低结肠炎大鼠的大体、组织学评分及MPO 活性(P<0.05),升高SOD 活性(P<0.05),降低 MDA 水平(P<0.05),降低 IL-1β和TNF-α表达水平(P<0.05) 。结论: 5-ASA 灌肠治疗TNBS 诱导的大鼠结肠炎疗效显著,其机制与抗氧化作用及抑制 IL-1β和 TNF-α的表达有关 。

关键词: 5-氨基水杨酸, TNBS 诱导的结肠炎, 超氧化物歧化酶, 丙二醛, 白细胞介素-1β, 肿瘤坏死因子-α

Abstract: AIM: To investigate the effect and mech-anism of 5-aminosalicylic acid (5-ASA) in topical treat-ment on trinitrobenzene sulfonic acid (TNBS)-induced co-litis in rats.METHODS: Colitis wasinduced by intraco-lonic administration of TNBS and was treated with 5-ASA at the dose of 100 mg·kg-1 for2 weeks.Normal control grouPwas administrated with normal saline and TNBS control grouPwas treated with TNBS,not with 5-ASA.Macroscopic damage,histological changes and myeloper-oxidase (MPO) activity were evaluated.Superoxide dis-mutase (SOD) activity and malondialdehyde (MDA) level in colonic mucosa were detected by kits.The expression of interleukin-1β(IL-1β) and tumornecrosis factor-α(TNF-α) mRNAs in colonic mucosa was determined by a reverse transcription and polymerase chain reaction meth-od.RESULTS: Compared with TNBS control group,the macroscopic and histological changes and MPO activity in 5-ASA treated groups were improved.SOD activity was increased and the level of MDA in colonic mucosa was re-duced significantly.The expression of IL-1βand TNF-mRNAs in colonic mucosa was also decreased significant-ly.CONCLUSION: 5-ASA enema can significantly ameliorate TNBS-induced colitis in rats via antioxidant mechanism and attenuation of proinflammatory cytokine expression.

Key words: 5-aminosalicylic acid, TNBS induced colitis, superoxide dismutase, malondialdehyde, interleu-kin-1β, tumornecrosis factor-α

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