中性粒细胞通过产生细胞毒性干扰素-γ的产生氨基诱导的肝损伤加剧
Hao Wu1, Chunqing Guo2, Zheng Liu3
1Department of Nephrology, The First Hospital of Jilin University, Changchun, Jilin 130021, China.
International immunopharmacology
|August 4, 2023
概括
乙氨基 (APAP) 诱导的肝损伤 (AILI) 的严重程度与干扰素 (IFN) -γ有关. 这项研究确定肝中性粒细胞是IFN-γ的主要来源,揭示了药物诱导的肝损伤的新机制.
科学领域:
- 免疫学 免疫学 免疫学
- 肝病学 肝病学是一种肝病学.
- 毒理学 毒理学 毒理学
背景情况:
- 药物诱导的肝损伤,特别是来自乙氨基 (APAP),是导致急性肝衰竭的主要原因.
- 免疫反应,包括促炎性细胞因子干扰素 (IFN) -γ,在调节APAP诱导的肝损伤 (AILI) 严重性方面发挥作用.
- 在AILI中负责IFN-γ产生的特定免疫细胞尚未确定.
研究的目的:
- 为了确定乙胺诱导的肝损伤中IFN-γ的细胞源.
- 阐明中性粒细胞和IFN-γ在AILI的发病过程中的作用.
- 探索AILI的潜在治疗点.
主要方法:
- 在药物肝毒性患者中测量血清IFN-γ水平.
- 使用AILI与IFN-γ中和的小鼠模型.
- 在肝脏中使用流细胞计和耗尽研究识别IFN-γ产生细胞.
- 在AILI模型中研究中性粒细胞枯竭和收养转移的影响.
主要成果:
- 患者血清IFN-γ水平升高与药物肝毒性严重程度相关.
- 中和IFN-γ可降低小鼠模型中的肝毒性.
- 肝中性粒细胞,而不是传统的免疫细胞,是AILI中IFN-γ的主要来源.
- 中性粒细胞衍生的IFN-γ加剧了APAP诱导的肝细胞损伤,可以阻止.
- 中性粒细胞枯竭会降低肝脏IFN-γ和AILI的严重程度.
结论:
- 中性粒细胞是IFN-γ的新型来源,它促进了乙氨基诱导的肝损伤.
- 这项研究揭示了AILI中免疫媒介性肝损伤的新机制.
- 准来自中性粒细胞的IFN-γ可能为AILI提供治疗策略.
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