AGING CELL:炎症破坏周围神经再生能力

2018-09-03 海北 MedSci原创

已有的研究显示,周围神经的再生能力在衰老期间有所下降,导致神经病变的发展,影响机体的生物功能。施旺细胞的变化使得老年神经的维持和再生能力丧失,但是至今为止,其分子机制尚未确定。

已有的研究显示,周围神经的再生能力在衰老期间有所下降,导致神经病变的发展,影响机体的生物功能。施旺细胞的变化使得老年神经的维持和再生能力丧失,但是至今为止,其分子机制尚未确定。
最近,来自德国的研究人员发现,改变的炎症环境能够导致施旺细胞反应缺陷,作为衰老过程中神经再生受损的潜在机制。研究人员在完整的未受损伤的老年神经中检测到慢性炎症,其特征在于巨噬细胞浸润增加,以及单核细胞趋化蛋白1(MCP1)和CC趋化因子配体11(CCL11)水平升高。
此外,衰老神经中的施旺细胞出现部分去分化,伴随着一种独立于损伤的激活修复程序。在坐骨神经损伤后,最初的延迟免疫反应之后是持续的过度炎症状态,伴随着修复过程的减少。作为神经衰老的促成因素,研究人员发现CCL11在体外和体内干扰施旺细胞分化。
该结果表明,通过改变施旺细胞的行为,增加巨噬细胞和炎症信号的浸润会降低衰老神经的再生能力。该研究将CCL11确定为抗炎治疗的有希望的目标,旨在改善老年人的神经再生。

原始出处:
Robert Büttner et al. Inflammaging impairs peripheral nerve maintenance and regeneration. AGING CELL 2018, DOI: https://doi.org/10.1111/acel.12833

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    2018-09-04 kafei

    学习了谢谢

    0

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    2018-09-03 天地飞扬

    了解一下,谢谢分享!

    0

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浸润的巨噬细胞是PSC和急性和慢性SC小鼠模型的一个特征。肝胆巨噬细胞的药理和遗传抑制可减少小鼠肝损伤和纤维化。

J Hepatol:3级肥胖是失代偿性肝硬化患者发生慢加急性肝衰竭的危险因素

3级肥胖是失代偿性肝硬化患者发生慢加急性肝衰竭的危险因素。肥胖病人发生肾衰竭的风险也特别高。