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Vascular endothelial growth factor and diabetic complications.
Progress in Retinal and Eye Research ( IF 18.6 ) Pub Date : 2008-10-22 , DOI: 10.1016/j.preteyeres.2008.09.002
Barbara Wirostko 1 , Tien Y Wong , Rafael Simó
Affiliation  

Intraocular delivery of anti-vascular endothelial growth factor (VEGF) therapies is now used widely to treat age-related macular degeneration, and is currently undergoing evaluation in clinical trials for treatment of diabetic retinopathy. An important aspect of anti-VEGF treatment is that while the agents are injected into the vitreous cavity, they may be absorbed systemically, thus potentially affecting systemic VEGF levels. Systemic VEGF-A and the interplay between membrane-bound VEGF receptors and the soluble form of VEGF-R1 are key to angiogenesis, vasculogenesis, neurogenesis and hemodynamics. These cellular processes are regulated by complicated negative and positive feedback loops, many of which are disrupted and altered in diabetes. The VEGF protein, mRNA, as well as the actual VEGF receptor levels, appear to be impaired in diabetes in microvascular and macrovascular vessel beds. What is not clear is the exact role and influence that these levels have on an organ's function. In some organ systems, elevated VEGF levels act as a pathologic angiogenic stimulus (i.e., ocular neovascularization) whereas in others, low levels of VEGF activity leads to pathology (i.e., cardiomyopathy, wound healing and peripheral neuropathy). Diabetic patients have a higher risk of hypertension and proteinuria, two surrogate markers of systemic VEGF inhibition. Certain intraocular anti-VEGF treatments could therefore have an adverse effect in this population by possibly affecting circulating and organ-specific VEGF and VEGF receptor levels.

中文翻译:

血管内皮生长因子和糖尿病并发症。

眼内递送抗血管内皮生长因子(VEGF)疗法现已广泛用于治疗与年龄有关的黄斑变性,目前正在临床试验中评估糖尿病性视网膜病变的治疗方法。抗VEGF治疗的一个重要方面是,当将这些试剂注射到玻璃体腔中时,它们可能被全身吸收,从而潜在地影响全身性VEGF水平。全身性VEGF-A以及膜结合VEGF受体与VEGF-R1的可溶形式之间的相互作用是血管生成,血管生成,神经发生和血液动力学的关键。这些细胞过程受到复杂的负反馈和正反馈回路的调节,其中许多回路在糖尿病中被破坏和改变。VEGF蛋白,mRNA以及实际的VEGF受体水平,在糖尿病的微血管和大血管血管床中似乎受损。目前尚不清楚这些水平对器官功能的确切作用和影响。在某些器官系统中,升高的VEGF水平可作为病理性血管生成刺激(即眼新血管形成),而在另一些器官中,低水平的VEGF活性则导致病理(即心肌病,伤口愈合和周围神经病变)。糖尿病患者高血压和蛋白尿的风险较高,这是系统性VEGF抑制的两个替代指标。因此,某些眼内抗VEGF治疗可能通过影响循环和器官特异性VEGF和VEGF受体水平而对该人群产生不利影响。目前尚不清楚这些水平对器官功能的确切作用和影响。在某些器官系统中,升高的VEGF水平可作为病理性血管生成刺激(即眼新血管形成),而在另一些器官中,低水平的VEGF活性则导致病理(即心肌病,伤口愈合和周围神经病变)。糖尿病患者高血压和蛋白尿的风险较高,这是系统性VEGF抑制的两个替代指标。因此,某些眼内抗VEGF治疗可能通过影响循环和器官特异性VEGF和VEGF受体水平而对该人群产生不利影响。目前尚不清楚这些水平对器官功能的确切作用和影响。在某些器官系统中,升高的VEGF水平可作为病理性血管生成刺激(即眼新血管形成),而在另一些器官中,低水平的VEGF活性则导致病理(即心肌病,伤口愈合和周围神经病变)。糖尿病患者高血压和蛋白尿的风险较高,这是系统性VEGF抑制的两个替代指标。因此,某些眼内抗VEGF治疗可能通过影响循环和器官特异性VEGF和VEGF受体水平而对该人群产生不利影响。例如,心肌病,伤口愈合和周围神经病变)。糖尿病患者高血压和蛋白尿的风险较高,这是系统性VEGF抑制的两个替代指标。因此,某些眼内抗VEGF治疗可能通过影响循环和器官特异性VEGF和VEGF受体水平而对该人群产生不利影响。例如,心肌病,伤口愈合和周围神经病变)。糖尿病患者高血压和蛋白尿的风险较高,这是系统性VEGF抑制的两个替代指标。因此,某些眼内抗VEGF治疗可能通过影响循环和器官特异性VEGF和VEGF受体水平而对该人群产生不利影响。
更新日期:2019-11-01
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