NATURE:研究人员发现在脊髓损伤后维持呼吸的神经元

2018-10-13 海北 MedSci原创

功能失调的呼吸是颈髓损伤后发病和死亡的主要原因,并且脊髓损伤的病人通常需要辅助通气,这强调了制定恢复呼吸的策略的重要性。

功能失调的呼吸是颈髓损伤后发病和死亡的主要原因,并且脊髓损伤的病人通常需要辅助通气,这强调了制定恢复呼吸的策略的重要性。

已有的研究显示,在控制主要吸气肌的膈运动神经元上形成突触的宫颈中间神经元可以调节膈神经运动输出和膈肌功能。在不同的脊髓损伤模型中,结合药物遗传学和呼吸生理学检测,研究人员发现中颈部兴奋性中间神经元对于维持非创伤性颈脊髓损伤小鼠的呼吸至关重要,并且对于促进创伤性脊髓损伤后的呼吸恢复也起着重要的作用。

虽然这些中间神经元在正常条件下对于呼吸作用不是必须的,但是它们在非受伤动物中的刺激增强了吸气幅度。脊髓损伤后,对颈部兴奋性中间神经元的药物遗传学刺激能够帮助呼吸运动功能的立即恢复。

总体而言,该结果证明了通过靶向神经元亚群,帮助中枢神经系统创伤后恢复呼吸的策略的可行性。


原始出处:

Satkunendrarajah K et al. Cervical excitatory neurons sustain breathing after spinal cord injury. NATURE, 2018; DOI: 10.1038/s41586-018-0595-z


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    2018-11-20 liye789132251
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    2018-10-13 坚强007

    学习下

    0

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    2018-10-13 122b87b4m49(暂无昵称)

    学习了,谢谢

    0

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