Abstract

目的 探索高效的大鼠胰岛分离移植技术方法.方法 应用Wistai-Furth大鼠,于体内或体外胶原酶经胰管灌注膨化胰腺,联合不同密度Ficoll液或Histopaque液纯化胰岛细胞,评估胰岛的数量、纯度、胰岛当量以及肾被膜下胰岛移植的有效性.结果 体外经胰管灌注膨化胰腺结合Histopaque液纯化提取胰岛的数量、纯度和胰岛当量值均显著高于体内灌注组各数值(P<0.01),其提取时间无显著差别.1000个胰岛细胞移植进入左肾被膜下,有效的逆转了糖尿病大鼠高血糖,其远期糖耐受结果优于500和800个胰岛细胞移植组.结论 体外灌注膨化消化胰腺结合Histopaque液纯化胰岛的分离方法是一种满意的分离技术.1000个胰岛细胞是保证肾被膜下胰岛移植成功的最低有效数量。

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