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Science:反复食物中毒有持续危害

2017-12-22 海北 MedSci原创

肠炎是结肠炎和炎性肠病的核心病理特征。这些综合征来自不明身份的环境因素。

肠炎是结肠炎和炎性肠病的核心病理特征。这些综合征来自不明身份的环境因素。

加利福尼亚大学圣塔芭芭拉分校的研究人员发现,人类食物中毒的主要来源,肠道革兰氏阴性鼠伤寒沙门氏菌(ST),的非致命性胃肠道感染能够引起小鼠肠道组织的炎症,主要是结肠。其在病原体清除后能够持续存在,并且在重复感染中,其严重程度会不可逆地升高。

革兰氏阴性鼠伤寒沙门氏菌通过诱导内源性神经氨酸酶活性,使得宿主的保护机制逐步丧失,进而加速了肠道碱性磷酸酶(IAP)的分子老化和清除。该疾病与IAP去唾液酸化的Toll样受体4(TLR4)依赖性机制,以及IAP底物和TLR4配体脂多糖磷酸的累积有关。

研究人员还发现,IAP或抗病毒神经氨酸酶抑制剂扎那米韦的给药是通过维持IAP丰度和功能来治疗该疾病的。


原始出处:

Won Ho Yang et al. Recurrent infection progressively disables host protection against intestinal inflammationScience, 2017; 358 (6370): eaao5610 DOI: 10.1126/science.aao5610


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    2017-12-23 mashirong
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    2017-12-23 jichang
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    2017-12-23 yhy100201
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    2017-12-23 1ddf0692m34(暂无匿称)

    学习了.涨知识

    0

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