罗达胺-B会诱导肌缩性侧面硬化症的症状,类似于斑马鱼的行为
Subaraja Mamangam1, James Michael Brimson2
1Department of Biochemistry, Vivekanandha Arts and Science College for Women, Salem, 637303, Tamil Nadu, India.
Aquatic toxicology (Amsterdam, Netherlands)
|August 2, 2025
概括
罗达胺B (RhB) 食品造剂通过增加氧化应激和改变神经递质,导致斑马鱼的神经退行. 这项研究揭示了RhB.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 分子生物学分子生物学
背景情况:
- 罗达胺B (RhB) 是一种在大脑中积累的食品 adulterant.
- 它的神经毒性机制和对分子通路的影响尚未完全理解.
- 斑马鱼作为神经退行研究的有价值的模型.
研究的目的:
- 研究RhB暴露对成年雄性斑马鱼的神经分子和行为影响.
- 阐明RhB诱导的神经毒性背后的分子机制.
主要方法:
- 斑马鱼在21天内暴露于RhB (0.251.0μM) 和Rotenone (0.5μM) 的不同度.
- 行为评估包括镜子,小鱼群偏好,T迷宫,Y迷宫和新型坦克测试.
- 对斑马鱼的大脑进行了生物化学,神经化学和组织病理学分析.
主要成果:
- 暴露于RhB诱导了剂量和时间依赖的行为缺陷,包括减少焦虑和认知功能障碍.
- 生物化学分析显示氧化压力标志物 (脂质过氧化,活性氧物种) 的增加和神经递质水平的改变 (降低乙胆酶,多巴胺).
- 基因表达分析显示C9orf72,FUS的显著上调和BDNF的下调,表明与ALS等神经退行性疾病相关的途径.
结论:
- 暴露于RhB诱导斑马鱼显著的神经行为和神经化学变化.
- 斑马鱼大脑中观察到的分子变化模仿了神经退行症的各个方面,特别是肌肉增生侧面硬化症 (ALS).
- 这项研究强调了RhB的神经毒性潜力及其在食品安全和神经疾病研究中的相关性.
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