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在腹腔大动脉动脉瘤患者的肠道,血液,动脉瘤壁和血栓微生物组之间的关系
Éva Nemes-Nikodém1, Gergő Péter Gyurok2, Zsuzsanna A Dunai3
1Department of Medical Microbiology, Semmelweis University, 1089 Budapest, Hungary.
International journal of molecular sciences
|August 29, 2024
概括
腹腔大动脉瘤微生物群与健康血管不同,其中一些细菌来自肠道,而另一些来自环境来源. 动脉瘤中的特定细菌酶可能会加剧血管壁的破坏.
科学领域:
- 微生物学 微生物学
- 血管生物学 血管生物学
- 胃肠病学 胃肠病学
背景情况:
- 肠道功能失调和细菌转移与腹腔大动脉动脉瘤 (AAA) 病原发生有关.
- 了解AAA微生物组对于识别疾病机制至关重要.
研究的目的:
- 描述AAA组织中的微生物组,并将其与健康血管进行比较.
- 调查AAA中发现的细菌的起源,区分肠道来源和环境来源.
- 评估动脉瘤相关微生物酶在AAA进展中的作用.
主要方法:
- 在21名AAA患者的便,血液,血栓和动脉瘤样本上进行了16S rRNA测序.
- 分析了微生物组的组成,以确定AAA和健康血管微生物组之间的差异.
- 根据不同样本类型的丰度推断出细菌起源.
主要成果:
- 与健康血管相比,动脉瘤微生物群显示出 *Acinetobacter*, *Burkholderia*, *Escherichia* 和 *Sphingobium* 的丰度明显更高.
- 这些细菌中的一部分来自肠道,而其他包括*Acinetobacter*, *Sphingobium*, *Enhydrobacter*和 *Aquabacterium*在内的细菌来自环境,并以血栓/动脉瘤样本进行丰富.
- 在动脉瘤中发现细菌peptidylprolyl异构酶活性会加剧血管壁的破坏,与健康血管中的保护性酶形成鲜明对比.
结论:
- AAA微生物组与健康血管的微生物组不同,其中包括肠道和环境细菌.
- 环境细菌,可能来自口腔或皮肤来源,在AAA血栓和组织中显著存在.
- 动脉瘤内的特定微生物酶活动有助于病理过程,突出显示潜在的治疗点.
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