通过Hif1a缺陷的交感系统和母亲糖尿病暴露,对发育中的心脏进行重新编程
Hana Kolesova1,2, Petra Hrabalova3,4, Romana Bohuslavova3
1Institute of Anatomy, First Faculty of Medicine, Charles University, Prague, Czechia.
Frontiers in endocrinology
|March 20, 2024
概括
孕产妇糖尿病和HIF-1α通路缺陷会损害后代的心脏交感发育,导致心脏异常和新生儿死亡风险增加. 这凸显了子宫内环境在心血管健康中的关键作用.
科学领域:
- 发展生物学 发展生物学
- 心血管科学 心血管科学
- 内分泌学 在内分泌学.
背景情况:
- 母亲糖尿病是后代并发症的危险因素,包括心血管问题.
- 心交感系统的异常与婴儿死亡率和心脏缺陷有关.
- 连接孕产妇糖尿病与心交感系统发育的机制尚不清楚.
研究的目的:
- 调查孕产妇糖尿病和缺陷的缺氧诱导因子1-α (HIF-1α) 途径对心脏交感系统发育的综合影响.
- 在这些条件下,在小鼠模型中分析心脏发育和心脏交感系统的形成.
主要方法:
- 使用了一种小鼠模型,将母体糖尿病与Hif1a缺陷的同情系统结合起来.
- 对心脏和心脏交感系统发育进行了全面的分析.
- 使用RNA测序 (RNA-seq) 来对交感神经元进行转录分析.
主要成果:
- 孕产妇糖尿病和Hif1a缺乏症协同影响了心交感内置和上腺髓发育.
- 观察到心脏变小,心室壁厚度降低,冠状动脉血管扩大,冠状动脉有异常分支.
- RNA-seq揭示了与细胞循环,增殖和神经分裂相关的Hif1a缺陷交感神经元的显著变化.
结论:
- 不充分激活HIF-1α通路,特别是在孕产妇糖尿病中,有助于心脏交感系统异常.
- 心脏交感缺陷和血管/心肌变化之间的相互作用增加了心血管疾病的风险.
- 这些发育问题降低了对子宫外生命的适应能力,增加了新生儿死亡风险.
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