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Hepatology:HCV通过巨噬细胞激活肝星状细胞介导CCL5分泌

2017-03-29 MedSci MedSci原创

背景:HCV引起的慢性肝病是当前严重的健康问题,常引起纤维化/肝硬化及肝细胞癌。尽管炎症反应被认为在疾病的发生中发挥重要作用,但HCV感染期间肝脏疾病进展的具体机制尚不清除。方法:我们先前报道了包括Kuffer细胞在内的巨噬细胞暴露在HCV时,产生前炎症细胞因子。这些细胞因子可激活肝星状细胞致纤维化。在本研究中,我们研究了在HCV感染是巨噬细胞同肝星状细胞的相互作用。原代人肝星状细胞及永生的肝星状

背景:HCV引起的慢性肝病是当前严重的健康问题,常引起纤维化/肝硬化及肝细胞癌。尽管炎症反应被认为在疾病的发生中发挥重要作用,但HCV感染期间肝脏疾病进展的具体机制尚不清除。

方法:我们先前报道了包括Kuffer细胞在内的巨噬细胞暴露在HCV时,产生前炎症细胞因子。这些细胞因子可激活肝星状细胞致纤维化。在本研究中,我们研究了在HCV感染是巨噬细胞同肝星状细胞的相互作用。原代人肝星状细胞及永生的肝星状细胞(LX2细胞系)使用暴露HCV的人巨噬细胞的处理的培养基培养。

结果:通过检测这些细胞中炎症及纤维化相关的基因,发现炎症标记物(NLRP3, IL-1β, IL-6 and CCL5)和前纤维生成的标记物(TGFβ1, COL4A1, MMP2 and α-SMA)表达均上升。进一步研究发现,暴露HCV下的巨噬细胞分泌的CCL5激活肝星状细胞炎症小体及纤维化标记物,CCL5中和抗体可移植星状细胞激活。

结论:研究结果证实暴露HCV的人巨噬细胞可介导CCL5分泌,在感染炎症和纤维化中发挥显着作用。

原始出处:

Reina Sasaki,Pradip B. Devhare,Robert Steele,et al.Hepatitis C virus induced CCL5 secretion from macrophages activates hepatic stellate cells. Hepatology,20 March 2017,DOI: 10.1002/hep.29170

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    2017-10-05 gwc392
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    2017-03-30 ymljack
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    2017-03-30 gwc384
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    2017-03-30 lingqf

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背景:他汀类药物降低由HCV导致的肝硬化患者功能失代偿及死亡风险。然而,这种收益是否可拓展到普通人群,或者诸如HBV和酒精性肝硬化尚不清除。他汀同样也可降低HBV和HCV感染患者肝细胞癌的发生风险。这种作用是否能够在已经存在肝硬化的患者出现也不清除。我们旨在识别他汀在降低HBV、HCV或酒精性肝硬化患者肝功能失代偿、死亡率的作用。方法:从台湾国家医疗保险受益者中选取肝硬化患者。累积限定日剂量大于等

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