在新生儿暴露于有机酸盐后的长期神经心理发育缺陷:通过合成神经类固醇缓解
Michael James Neff1, Doodipala Samba Reddy2
1Department of Neuroscience and Experimental Therapeutics (M.J.N., D.S.R.) and Institute of Pharmacology and Neurotherapeutics (M.J.N., D.S.R.), School of Medicine, Texas A&M University Health Science Center, Bryan, Texas.
The Journal of pharmacology and experimental therapeutics
|October 20, 2023
概括
儿童接触有机 (OP) 农药会导致老鼠长期的神经发育缺陷. 神经类固醇 ganaxolone 治疗显著保护这些行为和认知障碍,这表明儿童的潜在疗法.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 发育生物学 发展生物学
背景情况:
- 儿童非常容易受到有机酸盐 (OP) 农药和神经毒剂的神经毒性影响.
- 在儿童中,OP中毒会导致急性发作和长期的神经精神障碍和认知障碍.
- 有限的慢性动物模型存在,用于研究儿科OP暴露的神经发育后果和干预措施.
研究的目的:
- 为了研究神经类固醇 ganaxolone (GX) 对新生儿有机暴露的长期神经发育影响的保护作用.
- 建立一个小儿动物模型来研究OP暴露的慢性影响和潜在的治疗干预措施.
主要方法:
- 新生小鼠 (产后28日) 被急性暴露于有机酸二醇-酸 (DFP).
- 动物在暴露后3个月和10个月被评估认知和行为缺陷,与或没有 ganaxolone (GX) 治疗.
- 神经病理学分析,包括神经元数量,神经炎症标志物和神经发生,在10个月后进行.
主要成果:
- 在儿童大鼠中,DFP暴露引起了情绪,焦虑,抑郁,攻击性,学习和记忆的长期显著缺陷.
- DFP诱导的神经病理包括神经元损失,神经发生减少,增加星病,神经炎症和状纤维发芽.
- 加纳克索隆 (GX) 治疗显著改善了行为和认知缺陷,并保护了神经炎症和神经退行.
结论:
- 这种儿科模型有效地复制了在儿童中观察到的OP暴露的神经发育后果.
- 用加纳克索隆 (GX) 进行的神经类固醇干预显示出对长期神经行为和神经病理缺陷的显著保护作用.
- 这项研究支持加纳克索隆作为减轻儿童急性OP暴露的长期影响的潜在治疗策略.
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