患有低度腺瘤性肠的患者的肠粘膜微生物组
Zoe Welham1, Jun Li1, Benita Tse1
1Bowel Cancer and Biomarker Laboratory, Kolling Institute, School of Medical Sciences, The University of Sydney, St. Leonards, Australia.
Gastro hep advances
|June 18, 2025
概括
这项研究研究了肠道微生物群在结直肠癌早期阶段. 特定细菌被发现增加或减少在患有低度形腺瘤的患者中,提供了对结直肠癌发展的见解.
科学领域:
- 胃肠病学 胃肠病学
- 微生物学 微生物学
- 在瘤学瘤学.
背景情况:
- 结肠直肠癌 (CRC) 有多因素的原因,包括环境暴露和遗传突变.
- 人们越来越认识到肠道微生物组在CRC进展中的作用,但其对多生长的早期影响仍未得到充分研究.
- 了解早期瘤中的结肠粘膜微生物群对于识别CRC前体至关重要.
研究的目的:
- 为了对患有低度发育不良 (LGD) 的患者的肠道粘膜微生物群进行表征.
- 为了比较患有LGD腺瘤和没有LGD腺瘤的患者之间的结肠粘膜的细菌组成.
- 为了识别与早期结直肠瘤相关的微生物特征.
主要方法:
- 一项涉及148名经过结肠镜检查的症状患者的病例控制研究.
- 粘膜活检的16S rRNA基因扩增序列测序与LGD腺多相邻.
- 在患有LGD腺瘤的患者和无息肉对照者之间比较细菌分类法.
主要成果:
- 在整体肠道粘膜社区多样性中观察到最小的差异.
- 在 *Parabacteroides distasonis*, *Bacteroides uniformis* 和未指定 *Lachnospiraceae spp. 的水平上升. * 在患有靠近结肠腺瘤的患者中发现.
- *Bacteroides/Phocaeicola massiliensis* 在LGD腺瘤患者中减少.
- 增加的 * 霍华德拉 sp. 在偏远结肠LGD息肉患者中观察到*和*Blautia faecicola*.
结论:
- 这项研究确定了与LGD腺瘤瘤相关的结肠粘膜中的特定微生物候选者.
- 这些发现有助于了解肠道微生物组在结直肠癌发生的早期阶段的作用.
- 鉴定到的细菌可以作为早期CRC检测的潜在生物标志物.
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