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狗肠道健康生物标志物的年龄相关变化
Anna Fernández-Pinteño1, Rachel Pilla2, Xavier Manteca3
1Department of Research and Development, Affinity Petcare, L'Hospitalet de Llobregat, Spain.
Frontiers in veterinary science
|September 8, 2023
概括
狗的衰老会影响肠道微生物群和短链脂肪酸特征. 高龄犬的便微生物组成和相对酸盐水平发生了变化,酸和酸的含量较低. 建议在较大的狗群中进行进一步的研究.
科学领域:
- 兽医医学 兽医医学 兽医医学
- 微生物学 微生物学
- 动物科学动物科学
背景情况:
- 肠道微生物群对宿主健康至关重要,老龄化对人类产生重大影响.
- 关于狗的肠道微生物群,健康和衰老的了解有限.
研究的目的:
- 为了研究狗的肠道微生物群和肠道健康指标的年龄相关差异.
- 探索便生物标志物的变化,跨越幼犬,成年犬和老犬年龄组.
主要方法:
- 通过16S rRNA基因测序分析了106只狗 (初级,成人,高级) 的微生物群组成.
- 便样本被评估为失生指数 (qPCR),短链脂肪酸 (SCFA),calprotectin和免疫球蛋白A.
主要成果:
- 贝塔多样性显示了不同年龄段的微生物群 (未加权的UniFrac) 的显著差异,但不是α多样性或dysbiosis指数.
- 高龄的狗表现出更高的细菌群, Pseudomonadota 和 Faecalibacterium 的相对丰度,以及几个细菌家族.
- 在老年人中,相对酸的比例较高,而酸,异酸和酸的比例较低;在老年人中,酸度显著降低.
结论:
- 狗的衰老与便微生物群组成和SCFA概况的微妙变化有关.
- 便中的calprotectin和免疫球蛋白A水平与年龄没有显著差异.
- 需要更大,更具代表性的犬种群来证实这些与年龄相关的肠道健康发现.
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