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年龄相关性黄斑变性的有前途的新的治疗

2014-04-11 EurekAlert EurekAlert

注射IL-18可帮助控制眼内新的血管生成;它可能成为一种针对与年龄有关的黄斑变性(AMD)的新的治疗;IL-18是一种正在进行临床试验的用于治疗某些癌症的蛋白质。“湿性”AMD是在直接位于视网膜后的血管开始生长失控时发生的。这些血管最终可能会出血,并导致近乎即刻的失明。 目前对湿性AMD的治疗聚焦于抑制一种叫做VEGF的分子的活性;VEGF可刺激新血管的生长。抗VEGF疗法指的是以每月一次或每2

注射IL-18可帮助控制眼内新的血管生成;它可能成为一种针对与年龄有关的黄斑变性(AMD)的新的治疗;IL-18是一种正在进行临床试验的用于治疗某些癌症的蛋白质。“湿性”AMD是在直接位于视网膜后的血管开始生长失控时发生的。这些血管最终可能会出血,并导致近乎即刻的失明。

目前对湿性AMD的治疗聚焦于抑制一种叫做VEGF的分子的活性;VEGF可刺激新血管的生长。抗VEGF疗法指的是以每月一次或每2个月一次的频率直接将制剂注射到眼内,它的作用像是用海绵来清扫过多的VEGF,并因此而防止异常血管的萌生。大多数患者的视力在经过这些注射之后会有所改善,但该治疗不存在终末期(某些患者在单只眼中接受过100多次的注射),且患者对该治疗会出现抵抗性。Sarah Doyle及其同事——他们过去曾经证明缺乏IL-18会加剧湿性AMD——在此显示,将IL-18注射到罹患AMD样损伤的小鼠眼睛中可有效地控制血管的生成,并会在没有毒性的情况下促进能加快视网膜组织愈合的免疫过程。

IL-18是通过盖紧VEGF生长本身的盖子而起作用的,从而暗示其功效可能会比那些抗VEGF疗法的功效持续更长的时间。从理论上说,患者在接受另外一次IL-18的注射之前可以维持很长的时间。这些早期的结果提示,IL-18 会成为用于治疗湿性AMD的一种有用的工具。

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    2014-07-31 sweetai

    目前只是基础研究,不过还是有希望的

    0

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    2014-04-13 huangdf
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    2014-04-13 muzishouyi

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