增殖性视网膜病变玻璃体切割物的细胞学免疫组化研究

探讨不同视网膜增殖性疾病细胞增殖的特征及其异同。方法 采用３种特异性抗原，即抗人细胞角蛋白，抗胶质纤维酸性蛋白，抗肌动蛋白对２８例临床上不同的视网膜疾病的增殖膜及玻璃体切除液样本进行免疫细胞化学研究。增殖性玻璃体视网膜病变的增殖特征以胶质细胞和视网膜色素上皮细胞为主，二者在ＰＶＲ发病中作用不同。

Immunohistochemical study on vitrectomy specimens of proliferative retinal diseases]

OBJECTIVE: To evaluate the characteristics of cellular proliferation in different retinal diseases. METHODS: Three specific antibodies [to cytokeratin (CK), glial fibrillary acidic protein (GFAP) and actin, respectively] were used. Vitrectomy specimens from 28 cases with different proliferative retinal diseases were studied immunohistochemically. RESULTS: In the vitreous with proliferative vetreoretinopathy (PVR), most of the proliferative cells were derived from glial and retinal pigment epithelial (RPE) cells. In the vitreous of proliferative diabetic retinopathy (PDR), RPE cells might enhance the contraction of proliferative membranes. Increase in actin in firovascular membranes with PDR may play a positive role on the pericytes dropping out from microvessels. CONCLUSION: The cell proliferation in the vitreous associated with the increase of levels of growth factors in pathological vitreous, possibly, is one of the mechanisms for the deterioration of proliferative retinal diseases.