探索MeHg对胚胎外和心血管的发育影响及其对心肌细胞收缩性的影响
Nathália Ronconi-Krüger1, Yara Maria Rauh Müller1, Evelise Maria Nazari1
1Departamento de Biologia Celular, Embriologia e Genética, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina, Brazil.
Journal of applied toxicology : JAT
|July 9, 2024
概括
在胚胎发育期间接触甲基 (MeHg) 会损害心血管健康. 这项研究表明,MeHg会损害发育中的血管和心脏细胞,影响胚胎的整体生长和体重.
科学领域:
- 发展性毒理学 发展性毒理学
- 心血管毒理学心血管毒理学
- 环境健康 环境健康
背景情况:
- 甲基 (MeHg) 是一种神经毒素,与人类的心血管问题有关.
- 它对胚胎心血管发育的确切影响需要进一步阐明.
研究的目的:
- 研究MeHg对胚胎外胚胎和心脏血管系统的影响.
- 评估MeHg对心肌细胞收缩功能的影响.
- 评估MeHg对胚胎体重和心脏体指数 (CSI) 的影响.
主要方法:
- 胚胎在胚胎1.5日 (E1.5) 暴露于单剂量MeHg.
- 血管结构,蛋白质表达 (VEGF,VCAM,cTnI),氧化 (NOx) 水平和心脏功能在E10时被分析.
- 测量了胚胎体重和CSI.
主要成果:
- 暴露于MeHg会增加胚胎外和心脏血管的数量.
- VEGF和VCAM蛋白水平下降,与减少的NOx相关.
- 癌细胞数量下降,而心脏热素I (cTnI) 增加,表明收缩功能受损.
- 胚胎体重增加和CSI减少.
结论:
- 暴露于MeHg会破坏胚胎外胚胎和心脏血管的完整性.
- 甲会损害心肌细胞收缩功能,影响心脏的表现.
- 这些心血管影响会对胚胎发育产生系统性影响,包括生长减缓.
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