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由过氧化引起的氧化应激会通过改变亡,抗氧化和雌激素相关基因来破坏斑马鱼的视觉发育
Febriyansyah Saputra1, Mitsuyo Kishida2, Shao-Yang Hu3
1Graduate School of Science and Technology, Kumamoto University, Kumamoto, Japan.
Scientific reports
|June 24, 2024
概括
过氧化 (H2O2) 暴露会损害斑马鱼的视觉发育,因为它会引起氧化应激,影响眼睛的生长,行为和基因表达. 抗氧化剂谷氨 (GSH) 逆转了这些有害影响,证实了H2O2的存在.
科学领域:
- 发展生物学 发展生物学
- 毒理学 毒理学 毒理学
- 神经科学是一个神经科学.
背景情况:
- 过氧化 (H2O2) 是一种反应性氧物种,可以引起细胞损伤,并与氧化应激有关.
- 氧化应激是一种影响发育过程的潜在因素,包括视觉系统发育.
- 了解H2O2对视觉发育的影响对于评估环境和生物风险至关重要.
研究的目的:
- 调查过氧化 (H2O2) 暴露对斑马鱼视觉发育的影响.
- 为了确定氧化应激是否介导H2O2诱导的发育毒性.
- 分析H2O2对眼睛发育,亡和相关基因表达的影响的分子机制.
主要方法:
- 斑马鱼胚胎在7天内暴露在不同度的H2O2中.
- 测量包括眼睛与身体长度比 (EBR),视网膜亡和光运动反应 (OMR).
- 对眼睛发育,亡,抗氧化剂和雌激素相关基因进行了基因表达分析. 与谷氨 (GSH) 共同化被用于评估氧化应激的作用.
主要成果:
- H2O2度≥0.1mM诱导发育性毒性,增加死亡率,并延迟化.
- 暴露于0.1mM H2O2降低了EBR,降低了OMR,并增加了视网膜亡.
- H2O2改变了基因表达,减少了眼睛发育和抗氧化基因,同时增加了与亡相关的基因. 而GSH反转了大部分的H2O2效应.
结论:
- 过氧化对斑马鱼的视觉发育产生不利影响,主要是通过氧化应激.
- 暴露于H2O2会破坏正常的亡调节,降低细胞抗氧化防御,减少雌激素的产生.
- 这些发现强调了氧化应激管理在预防发育异常方面发挥的关键作用.
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