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孕期肠道微生物群和高血压疾病:来自孟德尔随机化研究的证据
Aging
|September 12, 2023
概括
这项研究使用了门德尔的随机化来调查肠道微生物群和妊娠高血压疾病 (HDP) 之间的因果关系. 它确定了与HDP亚型因果相关的特定肠道微生物属,为预防和治疗提供了潜在的目标.
科学领域:
- 遗传学和微生物组研究
- 生殖健康和产科生殖健康和产科
- 流行病学和公共卫生.
背景情况:
- 新出现的证据表明,肠道微生物群 (GM) 与妊娠高血压障碍 (HDP) 之间存在联系.
- 然而,由于潜在的混因素和反向因果关系,建立明确的因果关系是具有挑战性的.
- 之前的研究往往缺乏在HDP亚型之间区分效应的能力.
研究的目的:
- 通过使用强大的孟德尔随机化 (MR) 方法,研究特定肠道微生物属和妊娠高血压疾病 (HDP) 之间的因果关系.
- 探索这些因果关联跨不同的HDP亚型,包括妊娠高血压 (GH),预子 (PE),和子.
- 为有针对性的预防和治疗策略提供有关将肠道微生物群与HDP联系起来的机制性途径的见解.
主要方法:
- 利用来自MiBioGen和FinnGen联盟的肠道微生物群 (N = 18,340) 和HDP (7,686例/115,893对照) 的全基因组关联研究 (GWAS) 数据.
- 使用多种MR方法 (反差加权,最大概率,加权中位数,MR-Egger,MR.RAPS) 来评估因果关系.
- 进行逆门德尔随机化 (RMR) 和多变量MR以确认因果方向并调整混因素,并进行灵敏度分析 (Cochran's Q,MR-Egger拦截,MR-PRESSO,留出一个) 以评估异质性和多变性.
主要成果:
- 确定了8个肠道微生物属和整体HDP之间的因果关系.
- 发现了与特定的HDP亚型相关的不同微生物属: *LachnospiraceaeUCG010,Olsenella,RuminococcaceaeUCG009,Ruminococcus2,Anaerotruncus,Bifidobacterium,*和*Intestinibacter*具有妊娠高血压 (GH); *Eubacterium* (动物群), *Eubacterium* (腹腔群), *Methanobrevibacter*, *RuminococcaceaeUCG002*,和*Tyzzerella3*具有前 (PE);以及 *Dorea*和 *RuminococcaceaeUCG010*具有.
- 与HDP相关的已识别的肠道微生物属在不同亚型中存在显著差异.
结论:
- 这项研究是首次应用MR方法来阐明肠道微生物群和特定的HDP亚型之间的因果关系.
- 这些发现表明,某些肠道微生物种在HDP及其亚型的发展中起因作用.
- 这些结果为通过调节肠道微生物群开发针对性预防和治疗HDP的策略提供了宝贵的见解.
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