生长抑素对急性出血坏死性胰腺炎肝损伤的作用机制
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王春友

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Effect of Somatostatin on the liver iryury in acute hemorrhagic necrotizing pancreatitis in rats and its mechanism
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    摘要:

    目的:探讨生长抑素对大鼠急性出血坏死性胰腺炎(AHNP)时肝损伤的治疗作用及其机制。
    方法:逆行胰胆管注射牛磺胆酸钠(TAC)制备AHNP模型。动物分为假手术组(SO组), AHNP生理盐水处理组(AHNP组)和AHNP奥曲肽治疗组。各组动物术后3,6,12 h剖杀,检测肝组织中Toll-样受体(TLR)2,4mRNA和细胞核转录因子(NF-κB)的表达情况。
    结果:与SO组比较,胰腺炎组大鼠TLR2,4mRNA于3 h开始升高,于12 h达高峰(均P<0.01);肝组织中NF-κB于3h开始表达增强,6h达高峰。奥曲肽组肝组织中的TLR2,4mRNA及NF-κB各时点表达均较AHNP组降低(P<0.05)。
    结论:生长抑素对AHNP有显著的保护作用。其机制可能是通过抑制胰弹性蛋白酶的分泌与激活,抑制Toll受体和NF-κB表达,降低炎症反应,从而减轻肝损伤。

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    Abstract:Objective:To explore the therapeutic effects and mechanisms of somatostatin on liver injury in acute hemorrhagic necrotizing pancreatitis(AHNP) in rats.
    Methods :Murine model of AHNP was established by retrograde injection of artificial bile into the biliopancreatic duct.The animals were divided into sham operation group(S group), AHNP saline injection group(AHNP group), and AHNP octreotide treated group. TLR2,4 mRNA expressions and NF-κB expressions in the liver tissue at 3,6 and 12h after operation were measured.
    Results:TLR2,4 mRNA in liver tissue in the AHNP group began to rise at 3h,and peaked at 12 h(P<0.01);NF-κB expression in liver tissue also began to rise at 3h, and peaked at 6h. In contrast, in the groups treated with Somatostatin,TLR2,4 mRNA and NF-κB expression in the liver tissue decreased at each time point (P<0.05).
    Conclusions:Somatostatin has a protective effect on AHNP. The mechanism may be by inhibition of the secretion and activation of elastase, inhibition of Toll receptor and NF-κB expression and decrease of inflammatory reaction, and decrease the liver injury.

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张昭, 赵刚, 王丹, 王春友.生长抑素对急性出血坏死性胰腺炎肝损伤的作用机制[J].中国普通外科杂志,2008,17(3):6-227.
DOI:10.7659/j. issn.1005-6947.2008.03.006

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  • 在线发布日期: 2008-03-25