冠状腺酶ABC促进脊髓损伤后的功能恢复
Elizabeth J Bradbury1, Lawrence D F Moon, Reena J Popat
1Sensory Function Group, Centre for Neuroscience Research, Hodgkin Building, Kings College London, Guy's Campus, London Bridge, London SE1 1UL, UK. elizabeth.bradbury@kcl.ac.uk
Nature
|April 12, 2002
概括
脊髓损伤阻止了轴突的再生,原因是抑制分子称为冠状素硫酸蛋白质糖 (CSPGs). 用冠状腺酶ABC (ChABC) 治疗损伤会降解CSPG,促进大鼠的轴突再生和功能恢复.
科学领域:
- 神经科学是一个神经科学.
- 再生医学是一种再生医学.
- 生物化学 生物化学
背景情况:
- 成年哺乳动物的脊髓损伤导致永久性,原因是中枢神经系统 (CNS) 轴突无法再生.
- 质痕在中枢神经系统受伤部位形成,含有抑制轴突生长的冠状素硫酸蛋白糖 (CSPG).
- CSPGs的抑制活性与它们的葡萄糖氨基 (GAG) 链有关.
研究的目的:
- 通过使用脊髓损伤后的chondroitinase ABC (ChABC) 来研究降解氏硫酸 (CS) -GAG的功能影响.
- 为了确定CHABC治疗是否可以促进大鼠模型中的轴突再生和功能恢复.
主要方法:
- 成年大鼠的背脊柱损伤接受了内胆固醇胺酶ABC (ChABC) 治疗.
- 评估了CS-GAG降解,再生相关蛋白质表达和轴突再生.
- 评估了后突触活动和运动机动/自身感受行为.
主要成果:
- 在脊髓损伤部位,ChABC治疗成功降解了CS-GAG.
- 促进了上升的感觉和下降的皮质脊髓道轴突的再生.
- 观察到功能恢复,包括恢复后突触活动和改善发发动机/亲感行为.
结论:
- 丁硫酸盐蛋白质糖 (CSPGs) 是脊髓损伤后体内显著的抑制分子.
- 用ChABC降解CS-GAG链是一种有前途的治疗策略,可以促进轴突再生和功能恢复.
- CSPG操纵为治疗人类脊髓损伤提供了潜在的可能性.
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