在健康成年人中评估肠道健康标志物的内部和内部变异性,使用优化的便采样和加工方法
Kirsten Kruger1, Yoou Myeonghyun2,3, Nicky van der Wielen1
1Division of Human Nutrition and Health, Wageningen University & Research, Wageningen, The Netherlands.
Scientific reports
|October 19, 2024
概括
了解肠道健康标志物变异性至关重要. 优化样本处理,如磨坊同质化,显著减少短链脂肪酸 (SCFA) 和其他标记物的变化,提高准确性.
科学领域:
- 微生物组研究的研究.
- 胃肠病学 胃肠病学
- 分析化学是一种分析化学.
背景情况:
- 肠道健康研究已经取得了进展,但关键便标志物随时间的个体内变异性尚未得到充分理解.
- 准确评估肠道健康需要了解并最大限度地减少生物和分析差异.
- 现有的协议可能无法充分解决便样本分析中固有的变异性.
研究的目的:
- 调查健康成年人多种便肠道健康标志物的个体内变化.
- 评估一个优化的样本处理协议,以减少分析变化.
- 为了确定加工方法对标记度和可变性的影响.
主要方法:
- 在连续三天内从十名健康成年人收集了便样本.
- 分析了各种标记物,包括便的一致性,含水量,pH值,短链脂肪酸 (SCFA),分支链脂肪酸 (BCFA),微生物负载,炎症标记物 (calprotectin, myeloperoxidase) 和非向代谢物.
- 将磨坊同质化与传统的便击进行比较,用于处理冷样品.
主要成果:
- 对大多数标记物观察到显著的个体内变异性 (CV%),包括总细菌/真菌 (40.6%/66.7%),calprotectin (63.8%),myeloperoxidase (106.5%) 和非向代谢物 (平均值). 40%). 在这个问题上.
- 微生物群属显示出高变异性 (>30%),而微生物多样性指标变化较小.
- 与击相比,磨坊同质化显著降低了SCFA (20.4%至7.5%),BCFA (15.9%至7.8%) 和非向代谢物的变异性,但没有改变平均度.
结论:
- 对于许多便肠道健康标志物而言,存在很高的个体内变异性,这表明可能需要重复采样以进行准确的评估.
- 优化样品预处理,特别是磨坊同质化,有效降低人类便样品的分析变异性.
- 标准化处理协议对于可靠的肠道微生物组和代谢组研究至关重要.
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