产前高糖饮食通过MT受体影响肺动脉收缩功能
Xueqin Feng1, Hongwei Fu2, Xiao Sun2
1Department of Obstetrics, Affilia108760ted Hospital of Jining Medical University, Jining 272100, China.
Reproductive toxicology (Elmsford, N.Y.)
|November 29, 2024
概括
怀孕期间高糖饮食会改变后代的肺动脉功能,增加血管收缩. 这种血管功能障碍与改变的MT受体有关,而不是PKC信号,影响长期的心血管健康.
科学领域:
- 心血管生理学心血管生理学
- 发展规划 发展规划
- 血管生物学 血管生物学
背景情况:
- 怀孕期间母亲的高糖 (HS) 饮食可以为后代的晚年血管疾病编程后代.
- 肺动脉 (PA) 功能障碍与肺高血压有关,但产前HS对PA血管活性的影响尚不清楚.
研究的目的:
- 为了研究产前高糖饮食对成年后代肺动脉反应性的影响.
主要方法:
- 怀孕的斯普拉格-道利大鼠在整个孕期都被食控制饮食或20%高糖溶液.
- 从成年后代中分离出肺动脉,进行功能和分子分析,包括RNA-Seq.
主要成果:
- 产前HS暴露导致PA血管壁厚度增加和后代的线粒体异常.
- 后代PA表现出增强的血管收缩,但减少了蛋白激酶C (PKC) 的功能和表达.
- 在HS组中,RNA-Seq显示MT1R和MT2AR基因表达增加,但蛋白质水平降低.
结论:
- 产前高糖饮食会导致后代肺动脉结构和功能发生显著改变.
- 黑色皮质素 (MT) 受体,而不是PKC信号,似乎是改变PA收缩性在产前HS暴露后的关键调解者.
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