延迟结,日间变化和后肠部位对小鼠便微生物群的影响大小
Kevin L Gustafson1,2, Zachary L McAdams3, Amber L Russell2
1University of Missouri (MU) Comparative Medicine Program, Columbia, MO 65201, USA.
iScience
|February 16, 2024
概括
便样本采集时间和位置影响微生物组分析. 早晨的样本和囊收集显示了更高的微生物多样性,但这些技术因素与实验变量相比的影响很小.
科学领域:
- 微生物组研究的研究.
- 动物模型动物模型
- 16S rRNA 测序的测序方法
背景情况:
- 便样本采集对于微生物组研究至关重要.
- 储存时间,采集时间和解剖位置等因素可能会影响结果.
研究的目的:
- 为了研究样本采集因素对小鼠便微生物组合的影响.
- 为了比较储存时间,收集时间和后肠区域对微生物多样性的影响.
主要方法:
- 使用了两种不同的微生物群殖民的小鼠.
- 用16S rRNA amplicon测序分析了便样本.
- 样品根据储存时间,采集时间和后肠来源 (肠到远肠) 进行了评估.
主要成果:
- 在室温下保存长达9小时的样品中,没有观察到α或β多样性的显著差异.
- 早晨采集的样本比下午采集的样本呈现出更高的α多样性.
- 时间显著影响了后肠区域的微生物组合,影响从阴增加到远肠.
结论:
- 虽然收集时间和位置可以影响微生物组数据,但它们的影响大小通常小于初级实验因素.
- 标准化样本采集协议,特别是白天的时间和解剖区域,对于可再生微生物组研究很重要.
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