纵向肠道微生物组分析和在狼病爆发期间病原菌株的繁殖
Doua F Azzouz1, Ze Chen2, Peter M Izmirly1
1Medicine, NYU Grossman School of Medicine, New York, New York, USA.
Annals of the rheumatic diseases
|June 26, 2023
概括
鲁米诺菌 (Ruminococcus gnavus,RG) 的爆发与系统性红斑狼 (SLE) 的爆发相关. 特定的RG菌株产生新型,免疫性脂质甘油,可能驱动狼性炎 (LN) 的疾病活性.
科学领域:
- 微生物组研究 微生物组研究
- 免疫学 免疫学 免疫学
- 系统性红斑狼 (SLE) 的发病因子
背景情况:
- 已知SLE的遗传因素,但临床爆发的触发因素尚不清楚.
- 在SLE患者中缺乏肠道微生物群的纵向分析.
- 了解肠道微生物群在SLE疾病活动中的作用至关重要.
研究的目的:
- 调查肠道微生物群社区弹性与SLE疾病活动之间的关系.
- 为了确定与SLE爆发相关的特定微生物变化.
- 在疾病爆发期间分析微生物菌株的特征.
主要方法:
- 纵向观察性研究,分析SLE患者和健康对照者的便微生物群组成.
- 分类学和多变量分析 (β-多样性) 来评估时间变化.
- 从肠道繁殖中分离和全基因组测序细菌菌株;糖甘和脂糖甘分析.
主要成果:
- 与对照组相比,SLE患者表现出显著的时间肠道微生物群不稳定性.
- 在SLE患者中观察到病原性物种的过渡性肠道生长尖峰.
- 鲁米诺菌 (RG) 的扩散发生在高疾病活动和狼性炎 (LN) 爆发期间,与由IgG2抗体识别的新型免疫性脂质糖相关.
结论:
- RG病原体的繁殖可能是复发性缓解性SLE的临床爆发的驱动因素.
- 从活跃的LN患者中分离出来的特定RG菌株具有致病性质.
- 在爆发期间由RG产生的新型脂质甘可能有助于SLE的发病.
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