肥胖对移植排斥和高血糖的微生物群依赖和独立的影响
Zhipeng Li1, Luqiu Chen1, Martin Sepulveda1
1Department of Medicine, University of Chicago, Chicago, Illinois, USA.
概括
肥胖中的微生物失调症加剧了移植排斥和高血糖症. 用抗生素或益生菌调节肠道微生物群,如Alistipes onderdonkii可以减轻这些不良影响,改善移植结果.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 代谢性疾病研究研究.
背景情况:
- 肥胖与肠道失调和慢性炎症有关,有助于糖尿病等代谢疾病.
- 肥胖的小鼠表现出葡萄糖不耐受性,增强的免疫反应和更快的移植排斥.
- 饮食引起的肥胖 (DIO) 在移植和代谢健康方面带来了重大挑战.
研究的目的:
- 研究肠道微生物群在饮食诱导的肥胖相关移植排斥和高血糖症中的作用.
- 确定微生物群调制是否可以改善移植中与肥胖相关的并发症.
主要方法:
- 使用高脂肪饮食 (HFD) 养的无特定病原体 (SPF) 小鼠和无细菌小鼠模型.
- 服用抗生素并进行便微生物群移植 (FMT).
- 评估了移植存活率,禁食血糖,炎症和葡萄糖不耐受.
主要成果:
- 抗生素治疗改善了HFD养小鼠的移植存活率和降低了高血糖症,这表明微生物群依赖的效应.
- 从DIO小鼠获得的FMT与从瘦小鼠获得的FMT相比,在无菌接受者中加速了移植的排斥.
- 高脂肪饮食通过微生物群依赖和独立的途径影响了移植结果.
- 高血糖症仅仅依赖于微生物群,而高血糖症有更广泛的影响.
- 在DIO小鼠中,补充Alistipes onderdonkii可降低高血糖,炎症和葡萄糖不耐受.
结论:
- 肥胖的肠道失调显著导致加速移植排斥和高血糖症.
- 使用抗生素或特定益生菌的微生物群操纵,提供了一种治疗策略,以抵消肥胖在移植中的有害影响.
- 艾利斯蒂普斯 (Alistipes onderdonkii) 显示出缓解HFD诱导的炎症和葡萄糖不耐受性的潜力,提供了一个有针对性的益生菌方法.
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