Variation of NF-κB and its effect on immune response in rats with obstructive jaundice
- Author:
- No author available
- Journal Title:
- WORLD CHINESE JOURNAL OF DIGESTOLOGY
- Issue:
- 7
- DOI:
- 10.3969/j.issn.1009-3079.2009.07.006
- Key Word:
- 梗阻性黄疽;核因子κB;脯氨酸二硫化氨基甲酸酯;血清总胆红素;谷丙转氨酶;内毒素
Abstract： 目的:探讨梗阻性黄疸(obstructive jaundice,OJ)时NF-KB的变化及其对免疫应答的影响.方法:60只Wistar♂大鼠随机分成3组:假手术组(SHAM组)、梗阻性黄疸组(CBDL组)和梗阻性黄疸+NF-kB抑制剂脯氨酸二硫化氨基甲酸酯(PDTC)组(PDTC组).每组术后7、14 d分批(n=10)检测光镜下肝脏病理组织学,血清总胆红素(TB),谷丙转氨酶(ALT),内毒素(LPS)水平,肝组织促炎因子IL-1β、IL-6,抑炎因子IL-10以及NF-kB蛋白表达.结果:CBDL组7、14 d大鼠均出现肝组织病理损伤,CBDL组较SHAM组血清TB、ALT、LPS增高(7 d:140.14±10.17 vs 7.309±1.04,134.479±10.20 vs 35.79±3.76.189.33±11.05 vs 2.816±0.58;14 d:194.608±12.73 vs 36.142±3.51.217.797±12.37 vs 7.321±1.03.292.816±14.53vs 2.664±0.53,均P＜0.01),肝组织IL-1β,IL-6,IL-10和NF-kB表达增强(均P＜0.01),且14 d较7 d变化更为显著.PDTC组大鼠血清TB、ALT和肝组织IL-1β、IL-6、NF-kB表达在7 d时相点时比CBDL组显著下降(P＜0.01),而到14 d时相点时比较CBDL组无明显变化;LPS和IL-10表达与CBDL组各时相点相比无明显差异.结论:梗阻性黄疸大鼠早期(7 d)通过PDTC抑制NF-kB活化表达,可下调促炎因子的表达,减轻肝损.后期(14 d)作用不明显,其机制可能是通过LPS、IL-10等其他途径所致.
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