PNAS:西方饮食调节免疫状态和LPS驱动的败血症反应

2019-03-01 海北 MedSci原创

脓毒症是一种对感染的有害免疫反应,导致器官衰竭,是全世界第11大常见死亡原因。尽管困扰人类已有数千年之久,但至今为止,我们尚未完全了解调节这种免疫反应,以及随后的败血症严重程度和结果的宿主因素。

脓毒症是一种对感染的有害免疫反应,导致器官衰竭,是全世界第11大常见死亡原因。尽管困扰人类已有数千年之久,但至今为止,我们尚未完全了解调节这种免疫反应,以及随后的败血症严重程度和结果的宿主因素。

最近,研究人员描述了西方饮食(WD),一种高脂肪和蔗糖,低纤维含量的饮食,在工业化国家中十分流行,可以导致更糟糕的疾病和更糟糕的结果。

研究人员将WD喂养和标准富含纤维的食物(SC)喂食的小鼠的LPS驱动脓毒症模型进行比较。研究人员发现,与喂食SC的小鼠相比,WD喂养的小鼠具有更高的基线炎症和脓毒症相关免疫麻痹的迹象。与SC小鼠相比,WD小鼠在脓毒症期间血液中嗜中性粒细胞的频率增加,一些具有“老化”表型。

重要的是,研究人员发现,脓毒症严重程度和死亡率的WD依赖性增加与微生物组无关,这表明饮食可能通过未知机制直接调节先天免疫系统。引人注目的是,研究人员可以通过在疾病进展和恢复期间跟踪特定的WD依赖性疾病因素(例如,低温和血液中的中性粒细胞的频率)来预测LPS驱动的败血症结果。

因此,研究人员得出结论,WD正在重新编程基础免疫状态和对LPS驱动的败血症的急性反应,这与导致更严重疾病和更差结果的替代疾病途径相关。


原始出处:

Napier BA et al. Western diet regulates immune status and the response to LPS-driven sepsis independent of diet-associated microbiome. PNAS, 2019; doi: 10.1073/pnas.1814273116.


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    2019-04-26 1e14ac12m14(暂无匿称)

    学习了噢。。

    0

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    2019-04-26 1e14ac12m14(暂无匿称)

    学习了噢

    0

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    2019-09-28 drwjr
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    2019-03-02 1dd8a7c5m95(暂无匿称)

    好文章,点赞啦!认真学习,谢谢分享给广大同好!

    0

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