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增生性玻璃体视网膜病变的研究进展 总被引:2,自引:1,他引:2
增生性玻璃体视网膜病变(PVR)是裂孔源性视网膜脱离手术失败最常见的原因。研究结果表明,PVR是视网膜脱离手术后的创伤愈合反应。随着视网膜的创伤,活化的视网膜色素上皮细胞,胶质细胞,纤维母细胞等增殖、迁移,与细胞外间质共同形成了PVR膜而导致牵引性视网膜脱离。就PVR的治疗而言,早期在于控制炎症,中期主要是抑制细胞增殖,晚期着重于防止纤维化的形成。着重就PVR的危险因素、临床分类、病理、手术处理以及最新的药物治疗进展做综合归纳。 相似文献
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增生性玻璃体视网膜病变的药物治疗 总被引:1,自引:0,他引:1
增生性玻璃体视网膜病变(PVR)常由于裂孔源性视网膜脱离、眼穿孔伤或眼内手术造成血-视网膜屏障受损,视网膜色素上皮(RPE)细胞进入玻璃体,继而引起RPE细胞、神经胶质细胞、成纤维细胞等在玻璃体内增生,形成以细胞为主的纤维膜。临床上治疗和预防PVR以手术为主,但效果不佳。近来有许多药物治疗PVR的研究报道,就PVR药物治疗研究进展进行综述。 相似文献
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增生性玻璃体视网膜病变(proliferative vitreoretinopathy,PVR)是孔源性视网膜脱离手术常见的并发症,它是一种由多种细胞成分、玻璃体、细胞外基质以及大量自分泌或旁分泌的细胞因子的混合作用构成的复杂病理反应.胶质细胞、视网膜色素上皮细胞、视网膜色素上皮衍生细胞、成纤维细胞、成纤维细胞样细胞和巨噬细胞被认为在PVR产生的过程中起重要作用.较之PVR中固定成分和细胞组分,细胞因子如色素上皮细胞衍生因子、单核细胞趋化蛋白1、血管内皮生长因子、肿瘤坏死因子α及其受体和血小板衍生生长因子及其受体也不容忽视.PVR相关的细胞生物学和细胞因子机制仍需进一步阐明.在PVR形成之前进行临床干预将是防治本病的研究方向.5-氟尿嘧啶、低分子量肝素、柔红霉素、13顺式维甲酸等对PVR预防和治疗的临床有效性试验研究结果不尽相同. 相似文献
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增生性玻璃体视网膜病变(proliferative vitrcoretinopathy,PVR)是视网膜脱离手术失败的主要原因。由于PVR的手术治疗效果仍不理想,许多学者已经研究了多种药物防治PVR,包括抗代谢药物、皮质类固醇药物、维生素类药物、钙通道阻滞剂以及基因治疗等。本文就近几年来PVR药物防治的最新进展作一简要概述。 相似文献
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蛋白质组学是研究特定时间或特定条件下一个细胞、组织或有机体所有蛋白质表达情况及其动态变化的科学,是在蛋白质水平上对生命体动态的、整体的研究。目前蛋白质组学已广泛应用于生命科学的各个领域。但在眼科的研究刚刚起步,发展尚不完全。现就蛋白质组学在增生性玻璃体视网膜病变中的应用进展做一综述。 相似文献
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视网膜色素上皮细胞在增生性玻璃体视网膜病变中的作用 总被引:3,自引:5,他引:3
增生性玻璃体视网膜病变(proliferative vitreoretinopathy,PVR)是在炎症和免疫功能细胞及多种活化因子对眼内细胞修复反应的调控过程中,由于过度促进细胞增殖、移行以及由细胞介导的胶原收缩而形成的。参与PVR的细胞目前已知的有5种,其中视网膜色素上皮(retinal pigment epithelium,RPE)细胞是最主要的,本文将影响RPE细胞功能的各种影响因素及PVR的治疗进展作一综述。 相似文献
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探讨增生性玻璃体视网膜病变的命名和分类,增生性玻璃体视网膜病变一般特指裂孔源性视网膜脱离发生者,眼外伤后的纤维组织增生、各种血管性疾病引起的血管膜增生虽然最终也导致牵引性视网膜脱离,但三者本质上有很大区别。关于PVR的分级以往曾出现过多种分类,但它们要么不够全面,要么太繁琐,在国际视网膜协会分类法的基础上,根据简单、使用的原则,文章推荐一种新的PVR分类法。 相似文献
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Formation of proliferative vitreoretinopathy in primary rhegmatogenous retinal detachment 总被引:2,自引:0,他引:2
Hooymans JM De Lavalette VW Oey AG 《Documenta ophthalmologica. Advances in ophthalmology》2000,100(1):39-42
Proliferative vitreoretinopathy (PVR) is the only cause of ultimate failure following retinal detachment surgery. This study aimed to review the rate of postoperative PVR in a series of 186 consecutive patients with primary rhegmatogenous retinal detachments. All 186 detachments were repaired with a scleral buckling procedure combined with cryotherapy. Drainage of subretinal fluid was done at the discretion of the surgeon. The mean follow-up was 12 months. In this series 152 (82%) of primary detachments were repaired succesfully with a single operation. Sixty-eight percent of patients regained 0.3 or better visual acuity, and 3% of patients were left with visual acuity of 1/60 or less. After two or more operations the retina was attached in 96% of the cases. In 12 (6%) eyes PVR was responsible for the initial surgical failure. In 4 cases PVR (grade B and limited C) was present prior to surgery. In 3 cases PVR developed within 2 days postoperatively, in 3 cases after 3–6 weeks and in another 2 cases after 8–l0 months. Eight out of 12 (66%) PVR patients had undergone cataract surgery. One PVR case had preoperative intraocular inflammation. An association between the duration of retinal detachment, or drainage of subretinal fluid and the development of PVR could not be demonstrated. In conclusion, the rate of postoperative PVR in primary rhegmatogenous retinal detachments was low. PVR preoperatively present and pseudophakia may be risk factors. 相似文献
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目的 分析孔源性视网膜脱离玻璃体手术后增生性玻璃体视网膜病变(PVR)形成的危险因素。方法 孔源性视网膜脱离110例(112眼)行玻璃体切割术,术后随访6—32个月(平均8.4个月)。结果 112眼中34眼(30.4%)形成术后PVR。多因素逐步回归分析显示,术前PVR为影响术后PVR形成的重要危险因素(P=0.001),而硅油填充、巨大视网膜裂孔、合并脉络膜脱离等因素与术后PVR的形成无显著相关。术前PVR者手术成功率明显降低。结论 影响术后PVR形成的重要危险因素为术前PVR。对于有术前PVR可能导致术后PVR形成的高危人群可行预防性治疗。 相似文献
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We studied 716 eyes of 697 patients with retinal detachment associated with the more advanced stages of proliferative vitreoretinopathy (PVR). The factors that influenced the severity of PVR and our criteria for surgical treatment were analyzed using statistical methods. The more severe cases of PVR showed a higher prevalence of cases with (1) retinal detachment exceeding 12 months' duration, (2) no retinal breaks observed, (3) the largest retinal break of a size equal to or exceeding one clock hour, and (4) poor initial visual acuity. Compared with the unoperated group, the eyes on which we subsequently operated were characterized by a greater prevalence of (1) patients with bilateral retinal detachment complicated by PVR, (2) cases with relatively recent onset of retinal detachment, (3) phakic eyes, (4) eyes without vitreous hemorrhage, (5) eyes with one or more visible retinal breaks and with smaller breaks, (6) relatively better initial visual acuity, and (7) less severe degrees of PVR. 相似文献