免疫组织化学方法在先天性巨结肠诊断中的应用

目的观察不同抗体在先天性巨结肠(HD)手术切除标本中的表达情况,寻找一个特异性抗体帮助快速、正确诊断HD。方法选择5个抗体包括神经元特异性烯醇化酶(NSE)、S100、组织蛋白酶D(CathepsinD,CAD)、外周蛋白(Peripherin),蛋白基因产物(PGP9.5),利用免疫组织化学方法分别标记HD手术切除后标本的远端及近端根部。结果PGP9.5、NSE、Pe-ripherin在肠壁肌间、黏膜下神经丛及神经节细胞中均阳性表达,S100阳性表达黏膜下、肌间神经丛,对神经节细胞则阴性表达,CAD仅阳性表达神经节细胞而不表达神经丛。结论与其他抗体相比,CAD具有结果明显、易判断、快速等特点,是帮助诊断HD的一个特异性抗体。

Application of Immunohistochemistry Study on Diagnosis of Hirschsprung's Disease

Objective To observe the expression of various antibodies on resection specimens with Hirschsprung's disease(HD), and to find out a special antibody to help the diagnosis of HD. Methods Neuron specific enolase(NSE),S100, Cathepsin D (CAD), Peripherin, protein gene prosuct 9. 5(PGP9. 5) were used as the first antibody to do the EnVision immunohistochemical staining on each end of the resection specimens with HD. Results PGP9.5, NSE, Peripherin were positive both in neuroganglion cells and neuro-plexus in the submucosa and intermuscule; S100 was positive in neutoplexus but negative in neuroganglion cells in the submucosa and intermuscule; CAD was positive in neuroganglion but negative in neuroplexus cells in the submucosa and intermuscule. Conclusion Compared with the other antibodies,CAD is a special antibody which may help the diagnosis of HD; CAD staining results is easy to judge, and it is more faster and economic.