增强后肢卸载小鼠的微生物多样性以及多器官健康
Shama Shama1, Anu V Ranade2, Rizwan Qaisar2
1Department of Clinical Sciences, College of Medicine, University of Sharjah, University City, Sharjah 27272, United Arab Emirates; Department of Microbiology, Hazara University, Mansehra 21300, Pakistan.
Life sciences in space research
|January 20, 2024
概括
太空旅行会改变肠道微生物群,影响健康. 在后肢卸载 (HU) 的小鼠中补充细菌条件介质恢复了微生物多样性,并减轻了对肠道,视网膜和的负面影响.
科学领域:
- 微生物学 微生物学
- 空间生物学 空间生物学
- 胃肠病学 胃肠病学
背景情况:
- 太空旅行显著改变了肠道微生物群,可能导致健康问题.
- 后肢卸载 (HU) 是一个经过验证的微重力效应的地面模型,此前已经表明可以诱导肠道失调.
研究的目的:
- 评估新型细菌条件介质对抗微重力诱导的肠道微生物群变化的有效性.
- 调查细菌条件介质对HU小鼠视网膜和脏微架构的系统性影响.
主要方法:
- 后肢卸载 (HU) 的小鼠和对照组接受了三周的细菌条件介质或安慰剂.
- 用DNA提取后的16SrRNA测序分析了肠道微生物组成.
- 评估了视网膜和脏的微架构变化.
主要成果:
- HU小鼠表现出肠道微生物多样性的减少和致病性Firmicutes的增加.
- 补充细菌条件介质显著增加了肠道微生物多样性,并改变了HU小鼠的操作分类单元 (OTU) 丰度.
- 补充剂部分预防了HU诱导的肌肉衰弱和视网膜和脏的结构异常.
结论:
- 细菌条件介质可以恢复肠道微生物的多样性,并减轻与卸载相关的负面系统性影响.
- 对细菌代谢物分子机制的进一步研究是有必要的,以了解它们在慢性压力下对系统的影响.
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