在小鼠单次轻度缺血性中风和复发性中风后,肠道微生物群概况的系统性表征
Decao Yang1,2, Panxi Sun1,3, Yong Chen1,4
1Institute of Medical Innovation and Research, Peking University Third Hospital, Beijing 100191, China.
Biomedicines
|January 23, 2024
概括
在小鼠中,复发性中风显著降低了生存率,并增加了脑梗塞的大小. 这项研究表明,急性缺血性中风,特别是复发性中风,大大减少了肠道微生物群的多样性.
科学领域:
- 神经科学是一个神经科学.
- 微生物学 微生物学
- 胃肠病学 胃肠病学
背景情况:
- 重复性中风构成重大威胁,增加了残疾和死亡风险.
- 肠道微生物群在中风后的恢复中起着至关重要的作用,并且因缺血事件而受到干扰.
研究的目的:
- 在小鼠模型中调查复发性缺血性中风对生存率,心脏病发作大小和肠道微生物群组成的影响.
- 为了确定肠道微生物群和代谢途径在单次和复发性缺血性中风后发生的变化.
主要方法:
- 建立一个复发的中脑动脉封闭 (MCAO) 鼠标模型.
- 在单次和复发性MCAO之间比较生存率和心脏病发作量.
- 在MCAO后的各种时间点收集的便样本的16S rRNA测序.
- 分析因中风事件而改变的潜在代谢途径.
主要成果:
- 与单次MCAO相比,复发性MCAO显著降低了小鼠的生存率,并增加了缺血性心脏病发作的大小.
- 急性缺血性中风,特别是经常性中风,导致肠道微生物群多样性显著下降.
- 分析发现,单次和复发性中风后,几个显著改变的代谢途径.
结论:
- 经常性缺血性中风加剧了负面结果,突出了预防策略的迫切需要.
- 肠道微生物群失调是急性和复发性缺血性中风的关键后果.
- 了解这些微生物群变化可能为中风预防和管理提供新的治疗点.
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