胃病变的微生物组成:基于Helicobacter pylori毒性特征的差异
Silvia Helena Barem Rabenhorst1, Adriana Camargo Ferrasi2, Morgana Maria de Oliveira Barboza1
1Genetic Molecular Laboratory, Pathology and Forensic Medicine Department, Federal University of Ceará, Fortaleza, CE, Brazil.
Scientific reports
|November 21, 2024
概括
在胃癌发生的连续步骤中,Helicobacter pylori的毒性显著改变了胃微生物群的组成. 这种微生物转变,特别是活跃胃炎中 Pseudomonades 的丰富性,突出了微生物群.
科学领域:
- 微生物学 微生物学
- 胃肠病学 胃肠病学
- 在瘤学瘤学.
背景情况:
- 杆菌感染是胃癌的主要危险因素,慢性胃炎和肠道代谢是关键阶段.
- 杆菌的cag病原性岛 (cagPAI) 影响病毒性,但仅靠细菌遗传学无法完全解释疾病的进展.
- 其他微生物因素在H. pylori相关的胃癌发生中的作用需要进一步研究.
研究的目的:
- 在患有不同阶段的胃病变 (慢性胃炎,肠道转化,胃癌) 和正常胃组织的患者中,描述胃微生物的组成.
- 调查H. pylori状态 (存在和毒性) 与胃微生物群之间的关联.
- 识别与H. pylori感染和胃癌发生相关的微生物特征.
主要方法:
- 在胃粘膜样本上进行了16S rRNA元基因组测序.
- 从患有不活跃胃炎,活跃胃炎,肠道转化,胃癌和正常胃组织的患者获得样本.
- 使用统计分析,根据H. pylori的状态和疾病阶段来比较微生物组成.
主要成果:
- 在不活跃和活跃的胃炎之间观察到胃微生物组合的显著差异,这取决于H. pylori的存在和毒性 (p=0.000575).
- 在胃炎样本中, Pseudomonades 顺序是最为丰富的,并且在活性胃炎中与非病毒性 H. pylori 相关.
- 特定的微生物属被确定为H. pylori状态的指标,其中一些与疾病相关性较弱,这表明微生物群的作用更广泛.
结论:
- H. pylori 毒性状态在整个致癌级联过程中显著影响胃微生物群组成.
- 除了H. pylori外,胃微生物群在胃癌发生过程中发挥着重要作用.
- 了解这些微生物动态可以为胃疾病的发展和潜在的治疗点提供新的见解.
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