困难杆菌感染在人类和小鼠中促进胃肠道功能障碍疾病的后急性阶段
Deiziane V S Costa1, Natalie Pham1, Andrea V Loureiro2
1Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, USA.
Anaerobe
|March 25, 2024
概括
艰难菌感染 (CDI) 导致人类和小鼠的胃肠 (GI) 功能障碍持久. 一个小鼠模型显示,CDI在康复期间导致异常的肠道过渡,有助于后感染性IBS研究.
科学领域:
- 胃肠病学 胃肠病学
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
背景情况:
- 困难菌感染 (CDI) 是重新入院和死亡的重要原因.
- 感染后胃肠道 (GI) 功能障碍是CDI的一个常见并发症.
研究的目的:
- 在急性CDI之后,研究人类和小鼠的胃肠道功能障碍.
- 为了验证一只小鼠模型用于研究后感染性刺激性肠综合征 (IBS).
主要方法:
- 审查了67名被评估为便微生物群移植 (FMT) 的患者的临床记录.
- C57BL/6小鼠感染了C. difficile,并监测了临床得分,便流失和骨髓氧化酶 (MPO) 水平.
- 在感染后的第21天使用埃文斯蓝色和FITC-70kDa方法评估了肠道动性.
主要成果:
- 在67名患者中,有40人患有CDI,22人患有CDI后的IBS.
- 受感染的小鼠在感染后的第三天显示出增加的MPO和临床评分.
- 在第21天,小鼠呈现出增加的总肠道过渡时间和近腹直肠FITC-70kDa水平,表明便秘表型,早期炎症和晚期过渡时间之间存在相关性.
结论:
- 感染后肠道功能障碍在CDI后在人类和小鼠中都很明显.
- 经过验证的小鼠模型表明,在康复阶段,CDI诱导的异常胃肠道过渡.
- 这种模型为探索人类后感染性IBS背后的机制提供了潜力.
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