玻璃体腔注射抗血管内皮生长因子单克隆抗体bevacizumab对增生型糖尿病视网膜病变纤维血管膜中整合素链接激酶表达的影响

目的 观察玻璃体腔注射抗血管内皮生长因子单克隆抗体bevacizumab(商品名Avastin)对增生型糖尿病视网膜病变(PDR)纤维血管膜中整合素链接激酶(ILK)表达及视网膜血管内皮细胞数量的影响.方法 玻璃体切割手术中取出的24例PDR患者的视网膜前纤维血管膜,其中12例患者手术前1周玻璃体腔单次注射bevaei...

Effect of intravitreal injection with bevacizumab on expression of integrin-linked kinase in fibrovascular membranes of proliferative diabetic retinopathy

Objective To observe the effect of intravitreal injection of bevacizumab(Avastin,IVB)on the expression of integrin-linked kinase(ILK)in fibrovascular membranes and the number of vascular endothelial cells(VECs)in proliferative diabetic retinopathy(PDR).Methods Twenty-four fibrovascular membrane samples were collected during pars plana vitrectomy in 24 patients with PDR.1 2 PDR patients had received a single 1.25 mg IVB 7 days preoperatively(bevaeizumab group),the other 1 2 patients(nonbevacizumab group)had not received lVB.For each of 24 fibrovascular membranes specimen.the number of VECs in the membranes were counted after staining with hematoxylin-eosin and yon willebrand factor.Expressions of ILK in the fibrovascular membranes were detected through immunohistochemistry analysis.Results Immunohistochemistry revealed that ILK was highly expressed in all of 24 fibrovaseular membranes of PDR.The average optieal density of ILK expression level in bevacizumab and non-bevaeizumab group were(127.78±15.08)and(129.03±16.26)respectively.the difference was not statistically significant (t=0.330,P=0.745).The number of VECs in ftbrovascular membranes in bevacizumab and nonbevaeizumab group were 21.50±3.94 and 41.33±7.44 respectively,the difference was statistically significant(t=3.872,P=0.003).Condusiom ILK was expressed in fibrovascular membranes of PDR.IVB can decrease the number of VECS during the process of PDR,but it can not affect the expression of ILK protein.