首都医科大学学报 ›› 2009, Vol. 30 ›› Issue (3): 317-320.doi: 10.3785/j.issn.1006-7795.2009.03.013

• 肝纤维化基础研究 • 上一篇    下一篇

己酮可可碱治疗非酒精性脂肪性肝炎的实验研究

崔焱, 张莉, 贾继东   

  1. 首都医科大学附属北京友谊医院肝病中心
  • 收稿日期:2009-02-28 修回日期:1900-01-01 出版日期:2009-06-21 发布日期:2009-06-21
  • 通讯作者: 贾继东

A Trial of Pentoxifylline in Rat Nonalcoholic Steatohepatitis

CUI Yan, ZHANG Li, JIA Ji-dong   

  1. Liver Research Center, Beijing Friendship Hospital, Capital Medical University
  • Received:2009-02-28 Revised:1900-01-01 Online:2009-06-21 Published:2009-06-21

摘要: 目的 通过高脂饮食制备大鼠非酒精性脂肪肝模型,观察肝组织胶原的合成及相关细胞因子的变化。进一步观察及探讨己酮可可碱(pentoxifylline,PTX)对非酒精性脂肪性肝炎(nonalcoholic steatohepatitis,NASH)所致肝纤维化的治疗作用及机制。方法 30只 SD大鼠随机分为模型组(n=10)、治疗组(n=10)和正常对照组(n=10)3组。模型组和治疗组大鼠以高脂饲料喂养,治疗组大鼠高脂饮食12周后每d同时予以己酮可可碱16 mg/kg,及治疗4周。对照组大鼠以普通饲料饲养。实验16周处死3组大鼠。应用荧光定量PCR方法分别测定肝组织Ⅰ、Ⅲ型前胶原(procollagenⅠ、Ⅲ)、转化生长因子-β1(TGF-β1)及肿瘤坏死因子-α(TNF-α)的水平。结果 大鼠肝组织中Ⅰ型前胶原mRNA的表达量模型组高于对照组,治疗组显著低于模型组,差异有统计学意义(P<0.05);大鼠肝组织中Ⅲ型前胶原mRNA的表达量,模型组高于对照组,差异有统计学意义(P<0.05),治疗组与模型组表达量差异无统计学意义;大鼠肝组织中TGF-β1mRNA的表达量模型组高于对照组,治疗组显著低于模型组,差异有统计学意义(P<0.05);大鼠肝组织中TNF-α mRNA的表达量模型组高于对照组,治疗组显著低于模型组,差异有统计学意义(P<0.05)。结论 TGF-β及TNF-α可能参与非酒精性脂肪肝肝纤维化的发生、发展过程。己酮可可碱可能通过抑制细胞因子TGF-β1和TNF-α降低脂肪性肝炎肝脏细胞外基质Ⅰ、Ⅲ型胶原的合成,对NASH引起的肝纤维化起到一定的治疗作用。

关键词: 非酒精性脂肪性肝炎, 己酮可可碱, 转化生长因子-β1, 肿瘤坏死因子-α

Abstract: Objective To investigate the effects and mechanism of pentoxifylline on nonalcoholic steatohepatitis. Methods Thirty SD rats were divided into 3 groups randomly: model group (n=10), treatment group(n=10), and normal control group(n=10). The rats of model group and treatment group were given fat-rich feed, and those of normal control group were given normal feed. Furthermore, the rats of treatment group were given pentoxifylline after 12 weeks of fat-rich diet feeding. At 16 weeks, the rats of treatment group, normal control group and model group were sacrificed. Livers were reserved to measure the procollagen Ⅰ, procollagen Ⅲ, TGF-β1 and TNF-α mRNA expression by real-time PCR. Results The model group's procollagenⅠmRNA expression level was higher than that of the normal control group(P<0.05), that of the treatment group was lower than that of the model group(P<0.05). Model group's procollagen Ⅲ mRNA expression level was higher than that of the normal control group(P<0.05), that of the treatment group was lower than that of the model group, but the differences were no statistically significant. The model group's TGF-β1 mRNA expression level was higher than that of normal control group(P<0.05), that of treatment group was lower than that of model group(P<0.05). Model group's TNF-α mRNA expression level was higher than that of normal control group(P<0.05), and that of treatment group was lower than that of model group(P<0.05). Conclusion Pentoxifylline can decrease the collagen Ⅰand collagen Ⅲ mRNA expression of nonalcoholic steatohepatitis, inhibit TGF-β1 and TNF-α expression. Pentoxifylline may have certain anti-fibrotic effects.

Key words: nonalcoholic steatohepatitis, pentoxifylline, TGF-β1, TNF-α

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