在模拟微重力条件下的人类肠道微生物组和代谢物动态
Ana Ramos-Nascimento1, Lucia Grenga2, Sven-Bastiaan Haange3
1Institute of Aerospace Medicine, German Aerospace Center (DLR e.V.), Cologne, Germany.
Gut microbes
|September 26, 2023
概括
模拟的无重量状态轻微改变了宇航员的肠道微生物组. 反对措施协议增加了有益的短链脂肪酸,这表明在太空飞行期间保持肠道健康的方法.
科学领域:
- 太空医学 太空医学
- 微生物组研究的研究.
- 人类生理学 人类生理学
背景情况:
- 长时间的太空飞行对人类健康构成风险,包括肠道微生物组的改变.
- 通过床上休息模拟微重力是研究这些效应的关键类比.
- 人工引力正在被探索作为一种潜在的对策.
研究的目的:
- 为了研究60天模拟微重力对肠道微生物群的影响.
- 评估人工重力的有效性,作为对肠道微生物组变化的对策.
- 识别与模拟无重量和对策相关的微生物和代谢特征.
主要方法:
- 12名参与者接受了60天的头向下倾斜床休息.
- 对便样本进行了肠道微生物组合和功能分析.
- 代谢物分析的重点是短链脂肪酸 (SCFA).
主要成果:
- 模拟微重力诱导了肠道微生物组合和通路表达的轻微变化.
- 与只有微重力组相比,对策协议导致了不同的微生物模式.
- 有益的SCFA如酸盐,丁酸盐和酸盐被选择性地通过对策增加.
- 有益和机会性种群的调节表明微生物组平衡的轻微适应.
结论:
- 肠道微生物群监测,途径分析和代谢物分析提供了一种协同方法来评估太空任务期间的健康状况.
- 反制措施协议在缓解消极的肠道微生物组变化方面显示出希望.
- 这些发现支持在微重力环境中维持宇航员肠道健康的策略.
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