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Crit Care Med:基底前胆碱能神经元可以降低脓毒症的炎症程度

2017-08-19 MedSci MedSci原创

此前,有研究提出,在炎症调节中,基底前脑胆碱能神经元是主要的神经调节系统。然而,脓毒症中基底前脑胆碱能神经元的功能尚不清楚,胆碱能抗炎的神经通路仍未深入研究。近期,一项发表在杂志Crit Care Med上的动物研究对这一问题进行了研究。此项研究选择了雄性野生型C57BL / 6小鼠和ChAT-ChR2-EYFP(ChAT)转基因小鼠。研究者们使用光学方法控制基底前脑的胆碱能神经元的活性。使用盲肠

此前,有研究提出,在炎症调节中,基底前脑胆碱能神经元是主要的神经调节系统。然而,脓毒症中基底前脑胆碱能神经元的功能尚不清楚,胆碱能抗炎的神经通路仍未深入研究。


近期,一项发表在杂志Crit Care Med上的动物研究对这一问题进行了研究。此项研究选择了雄性野生型C57BL / 6小鼠和ChAT-ChR2-EYFP(ChAT)转基因小鼠。

研究者们使用光学方法控制基底前脑的胆碱能神经元的活性。使用盲肠结扎和穿刺诱导败血症。使用左颈椎迷走神经切断术和6-羟基多巴胺注射脾脏。

此项研究结果显示:基底前脑胆碱能神经元的光刺激可以引起血清和脾脏中肿瘤坏死因子-α和白介素-6水平的显着降低。盲肠结扎和穿刺与光刺激的ChAT小鼠中的左颈部迷走神经切断术结合,肿瘤坏死因子-α和白介素-6的减少可以部分逆转。

此外,光刺激基底前脑胆碱能神经元可以部分引起基底前脑,迷走神经背侧运动神经核和孤立核的腹侧中c-Fos表达的大幅增加。其中35.2%为酪氨酸羟化酶阳性的神经元。化学去神经支配表明,多巴胺能神经传递到脾脏对于抗炎是必不可少的。

此项研究结果是第一个证明选择性激活基底前脑胆碱能神经元足以减轻败血症全身炎症的结果。具体来说,基底前脑胆碱能神经元的光刺激在单核的迷走神经/腹侧部分的背部运动核中激活多巴胺能神经元,并且这种多巴胺能传出信号被迷走神经进一步传递给脾脏。这种将中枢胆碱能神经元连接到外周器官的胆碱能——多巴胺能神经回路可能会介导脓毒病的抗炎作用。

原始出处:
Zhai Q, Lai D, et al. Selective Activation of Basal Forebrain Cholinergic Neurons Attenuates Polymicrobial Sepsis-Induced Inflammation via the Cholinergic Anti-Inflammatory Pathway. Crit Care Med. 2017 Aug 10. doi: 10.1097/CCM.0000000000002646.

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    2017-09-03 1dd8c52fm63(暂无匿称)

    学习学习.了解了解

    0

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    2017-08-21 grace5704
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    2017-08-19 清风拂面

    谢谢分享,学习了

    0

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    2017-08-19 1ddf0692m34(暂无匿称)

    学习了,涨知识

    0

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