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Sci Rep:NASH炎症机制得到进一步阐明

2017-10-13 佚名 MedSci原创

非酒精性脂肪性肝炎(NASH)是与酒精无关的常见肝脏疾病,特征是脂肪在肝脏中积聚,并发生炎症和纤维化。全球NASH病例数持续上升,在中国,一些地区的NASH流行率可高达27%。在美国,NASH患者人数也高达1600万。NASH在没有得到有效治疗的情况下可能会诱发严重的肝脏问题,甚至肝癌。但该疾病的炎症方面的机制仍然未知。近日,欧洲多家研究机构的科学家合作在《Scientific Reports》上

非酒精性脂肪性肝炎(NASH)是与酒精无关的常见肝脏疾病,特征是脂肪在肝脏中积聚,并发生炎症和纤维化。全球NASH病例数持续上升,在中国,一些地区的NASH流行率可高达27%。在美国,NASH患者人数也高达1600万。NASH在没有得到有效治疗的情况下可能会诱发严重的肝脏问题,甚至肝癌。但该疾病的炎症方面的机制仍然未知。近日,欧洲多家研究机构的科学家合作在《Scientific Reports》上发文,对其进行了阐述。

以前的研究显示,肝脏炎症与血液源性肝巨噬细胞溶酶体脂质的积累之间有关联,有可能参与NASH的潜在机制。另外,体外研究也表明,特异衍生自氧化型低密度脂蛋白(oxLDL)颗粒的脂质,对从溶酶体去除具有抗性。oxLDL与免疫球蛋白IgM抗体的主要靶标磷酸胆碱(PC)呈分子模拟,通常认为oxLDL和相关脂质在巨噬细胞溶酶体中的积累与炎症增加有关。

在此基础上,研究者调查了血液源性肝巨噬细胞中溶酶体脂质的积累与肝脏炎症是否有因果关系,并评估了增加抗oxLDL IgM自身抗体能影响这种机制到何种程度。研究者创建的小鼠模型证明了溶血素脂质在血液源性肝巨噬细胞介导肝脏炎症和引发纤维化中的作用。此外,研究结果还表明,增加抗oxLDL IgM自身抗体水平能降低炎症。因此,旨在改善脂质诱导的溶酶体功能障碍和阻断oxLDL形成的疗法值得在NASH的背景下做进一步研究。

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    2017-10-15 kksonne
  2. [GetPortalCommentsPageByObjectIdResponse(id=1301186, encodeId=ccb513011867d, content=<a href='/topic/show?id=38e32852fe' target=_blank style='color:#2F92EE;'>#ASH#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=87, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2852, encryptionId=38e32852fe, topicName=ASH)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=39a0295, createdName=kksonne, createdTime=Sun Oct 15 02:12:00 CST 2017, time=2017-10-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=252600, encodeId=2ca02526007f, content=henhao, beContent=null, objectType=article, channel=null, level=null, likeNumber=92, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NcXNhUvfhzd2VdicMnaLeK2Im5gKx4Ucxd8Bwu6S7RG0uILBFQx5HTW2bU4VricDYlQqN20ibASSMYAeGrZrrTpy2Q/0, createdBy=80d11516357, createdName=139****0239, createdTime=Fri Oct 13 15:59:01 CST 2017, time=2017-10-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=252574, encodeId=a2992525e4a4, content=非常好的文章.学习了.很受益, beContent=null, objectType=article, channel=null, level=null, likeNumber=90, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7LIiaRZTzJ3SEfiauCzTMPW7YvPPYLNJBXG9oh6Al1icq2VQQkIHWxqXehcicTS62YKJVBhxeth3wggw/0, createdBy=7ce01621306, createdName=天涯183, createdTime=Fri Oct 13 15:10:48 CST 2017, time=2017-10-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=252542, encodeId=227f2525425e, content=好好学习天天学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=45101626056, createdName=忠诚向上, createdTime=Fri Oct 13 12:44:57 CST 2017, time=2017-10-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=252536, encodeId=6bec2525369e, content=不错的.学习了.谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=101, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mStl88fu4NdqKgfW3nMpOkC3jXxiaW2po0PtglY5ZuVjERqKADW4HyMI8bcZXWlKgH7tEP9ULBoBzuQMibia4pr1s9rQPqLvqQJ/0, createdBy=e8c02060444, createdName=中医痴, createdTime=Fri Oct 13 12:21:42 CST 2017, time=2017-10-13, status=1, ipAttribution=)]
    2017-10-13 139****0239

    henhao

    0

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    2017-10-13 天涯183

    非常好的文章.学习了.很受益

    0

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    2017-10-13 忠诚向上

    好好学习天天学习

    0

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    2017-10-13 中医痴

    不错的.学习了.谢谢分享!

    0

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