门静脉高压巨脾大部切除后残脾神经分布与定量研究

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目的:观察门静脉高压巨脾大部切除后残脾神经纤维分布与密度变化,评估残脾保留的价值.方法:选取门静脉高压脾肿大行脾大部切除并残脾腹后固定术患者13例,收集患者术后切取的巨脾组织,以及术后8年穿刺获取的残脾组织,另取外伤性脾组织13例为正常对照.采用免疫组化法检测脾神经肽Y (NPY)和神经丝蛋白200 (NF200)阳性神经纤维分布及密度.结果:3组脾组织NPY和NF200阳性神经纤维的分布部位大致相同,但两者在巨脾组织中的密度明显较高.红髓部分的定量分析显示,巨脾组织NPY与NF200阳性神经纤维密度均明显高于残脾组织和正常脾组织(均P<0.05),而两种阳性神经纤维密度在残脾组织与正常脾组织间差异无统计学意义(均P>0.05).结论:巨脾大部切除术后残脾神经纤维分布及含量与正常脾大致相同,提示解除高压环境后,残脾神经功能能逐渐恢复正常.
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