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小肠和便微生物群的结构和功能差异:16S rRNA基因在老鼠中的研究

Xiao-Wei Sun¹, Hong-Rui Li¹, Xiao-Lei Jin¹

¹Pathology Institute, School of Basic Medical Sciences, Lanzhou University, Lanzhou 730000, China.

|September 28, 2024

概括

便细菌只占低丰富度的乳腺细菌的40%,不反映主导的乳腺微生物或整体乳腺微生物多样性. 便样本不能准确地反映便微生物群的组成或功能.

科学领域:

微生物学微生物学
胃肠病学胃肠病学
动物科学动物科学

背景情况:

肠道微生物群在宿主健康中起着至关重要的作用.
了解阴茎和便微生物群之间的差异对于准确的健康评估至关重要.
之前的研究还没有完全阐明叶与便微生物群的独特组成和功能.

研究的目的:

为了比较小鼠的叶微生物群与便微生物群的花组成和功能.
研究高脂肪饮食 (HFD) 和无特定病原体 (SPF) 条件对肠道微生物群的影响.
为了确定便微生物群是否可以作为叶微生物群的可靠指标.

主要方法:

在常规,SPF和HFD条件下从Sprague Dawley (SD) 鼠中收集了阴茎和便含量.
放大并测序了16S核糖体核糖核酸 (rRNA) 基因的V3-V4区域.
分析了细菌属,数量,多样性 (α-和β-多样性) 和共同特征.

主要成果:

大约60%的状细菌属仅限于状体,其丰度很低.
结核和便之间共享的细菌显示出明显的主导和不太主导的种群.
与便细菌相比,阴道细菌表现出更大的β多样性.
HFD和SPF条件显著影响了α-多样性和丰富性,但没有共同的特征或β-多样性.

结论:

在常规条件下,便细菌只占低丰富度的叶属的40%左右.
占主导地位的便细菌并不准确地代表占主导地位的叶植物群.
便微生物群的多样性并不反映便微生物群的β-多样性,这表明便样本不是便微生物群的可靠代理.

关键词:

16S rRNA 基因是16S 的基因.便便便便皮质皮质皮质皮质我们的微生物群.鼠类鼠类鼠类鼠类鼠类测序的测序是指测序的测序.

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