补充剂的混合作用在慢性老鼠模型的炎症性侵蚀性关节炎和肺血管疾病
Kiana L Chen1,2, Stacey Duemmel2,3, Michael Christof2
1Department of Pathology and Laboratory Medicine, University of Rochester Medical Center, Rochester, New York, United States of America.
PloS one
|February 5, 2026
概括
在瘤亡因子转基因小鼠模型中,补充缺乏对慢性关节和肺部疾病没有保护. 然而,补充成分3缺乏可能会延迟炎症早期的骨质侵蚀.
科学领域:
- 免疫学 免疫学 免疫学
- 类风湿病学 类风湿病学
- 肺部病理学 肺部病理学
背景情况:
- 补充系统在类风湿性关节炎和肺高血压中的作用尚未完全理解.
- 转基因瘤坏死因子 (TNF-Tg) 的小鼠患有慢性炎症性关节炎和肺高血压,作为这些疾病的模型.
研究的目的:
- 在TNF-Tg小鼠模型中,研究补充剂缺乏是否能预防关节和肺部疾病.
- 分析补充成分3 (C3) 和B因子 (fB) 缺乏对疾病病理学的影响.
主要方法:
- TNF-Tg小鼠与C3淘汰赛 (C3KO) 和fB淘汰赛 (fBKO) 的小鼠交叉.
- 通过膝盖组织学,针对特定免疫细胞的流细胞计,针对骨体积的微计算机断层扫描,以及针对肺病的肺组织学/右心导管治疗来评估疾病的严重程度.
主要成果:
- 在TNF-Tg小鼠中,与补充相关的基因被上调,但C3和fB缺乏并没有显著改变整体关节或肺病理.
- 缺乏C3的小鼠在突中显示出增加的C5aR1阳性细胞群.
- 在早期的疾病中,C3缺乏的小鼠表现出更大的骨体积,这表明补体依赖性骨质侵蚀的延迟.
结论:
- 在这种TNF介导模型中,补充缺乏不会改善慢性关节或肺部疾病.
- 缺乏C3可能会延迟骨质侵蚀的发生,这表明补充剂在慢性炎症中起着复杂的作用.
- 慢性TNF驱动性疾病可能代表具有差异补充介导的独特病理内型.
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