乔永杰;李松凯;甄平;刘华;邱晓明;王伟;贾丁丁;张洪;

• 1:兰州军区兰州总医院骨科中心

摘要(Abstract)：

[目的]应用不同浓度结核杆菌构建兔脊柱结核模型,探索在造模中较适合的菌量。[方法]42只新西兰兔随机分为5组,实验组3组共30只,每组10只;对照组10只;空白组2只。实验组及对照组动物经弗氏完全佐剂致敏后,在L_6上终板下方钻孔,塞入明胶海绵。实验组分别注入0.1 ml浓度为10~6CFU/ml,10~7CFU/ml,10~8CFU/ml H37Rv标准菌;对照组注入0.9%的生理盐水0.1 ml;空白组不做任何处理。[结果]术后12周兔存活率:注射10~6 CFU/ml菌量兔100%、10~7CFU/ml菌量80%、10~8CFU/ml菌量30%、对照组100%、空白组100%。术后8周X线片阳性率分别为33.3%,62.5%,66.7%;CT及三维CT阳性率分别为44.4%,75%,100%。术后12周X线片阳性率分别为44.4%,75%,100%;CT及三维CT阳性率分别为44.4%,100%,100%。术后12周解剖见17只兔椎体发生骨质破坏,部分有干酪样坏死物质形成,未见有腰大肌脓肿形成;病理学检查:片状分布的干酪样坏死物质,骨小梁排列紊乱及轮廓不清,周围见上皮样细胞及多核巨细胞包绕,局部有部分死骨碎片形成,周围见大量炎细胞浸润;实验组细菌培养阳性率分别为22.2%,75%,66.7%。对照组及空白组未出现上述结核影像学及病理改变。[结论]不同浓度H37Rv标准菌构建兔脊柱结核模型存在较大差异,10~6CFU/ml成功率较低;10~8CFU/ml死亡率及并发症较高;10~7CFU/ml造模成功率高且死亡率较低,较适合兔脊柱结核模型的构建。

关键词(KeyWords)： 脊柱结核;动物模型;H37Rv结核杆菌;新西兰兔

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(编号:81371983);; 甘肃省自然科学基金资助项目(编号:1308RJZA146)

作者(Author): 乔永杰;李松凯;甄平;刘华;邱晓明;王伟;贾丁丁;张洪;

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DOI:

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