在太空任务期间,宇航员的肠道透性
Oluwamayowa S Akinsuyi1, Jessica Xhumari1, Amanda Ojeda1
1Institute of Food and Agricultural Sciences, Department of Microbiology and Cell Science, University of Florida, Gainesville 32611, FL, USA.
Life sciences in space research
|April 26, 2024
概括
宇航员在太空任务期间可能会经历"漏肠",其特点是肠道屏障减弱和有害肠道细菌的转移. 这项研究强调了需要胃肠道健康解决方案的太空探索.
科学领域:
- 空间生理学空间生理学
- 胃肠道的健康状况
- 微生物组研究的研究.
背景情况:
- 太空环境给人类生理学带来了独特的挑战.
- 肠道透性因其对全身健康的影响而越来越受认可.
- 调查肠道健康对于宇航员在太空飞行期间的福祉至关重要.
研究的目的:
- 在太空任务期间调查宇航员肠道透性增加的发生和机制.
- 分析与太空飞行相关的基因表达和肠道微生物群组成的变化.
- 在太空中识别胃肠道和全身健康的潜在风险.
主要方法:
- 系统的文献审查,以构建肠道透性的遗传地图.
- 从宇航员那里重新分析人类的转录基因数据集.
- 从太空飞行研究中分析小鼠转录和元基因组数据.
主要成果:
- 减少对肠道屏障功能,杯细胞和宇航员免疫反应至关重要的基因的表达.
- 在动物模型中,有肠道屏障功能障碍的证据,包括改变的细胞因子和粘素基因表达.
- 改变小鼠的肠道微生物群组成,有益细菌减少,致病性细菌增加,促进炎症.
结论:
- 太空飞行与肠道透率的增加以及宇航员的相关干扰有关.
- 了解这些胃肠道变化对于开发对策至关重要.
- 保持肠道健康对于长期的人类太空探索至关重要.
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