新生儿暴露于塞沃弗兰会扰乱特定基因的表达模式,这些基因可能是观察到的学习和记忆缺陷的原因
Nerea Jimenez-Tellez1,2,3, Marcus Pehar2,3, Frank Visser2
1Department of Biochemistry and Molecular Biology, University of Calgary, Calgary, AB T2N 4N1, Canada.
International journal of molecular sciences
|May 27, 2023
概括
新生儿暴露于sevoflurane麻醉剂会导致成年大鼠的长期记忆缺陷. 这项研究确定了与这些学习和记忆障碍相关的特定基因表达变化.
科学领域:
- 神经科学是一个神经科学.
- 麻醉学 麻醉学
- 分子生物学分子生物学
背景情况:
- 麻醉药可以引起神经毒性,影响细胞功能和行为.
- 新生儿接触麻醉剂可能导致长期缺陷.
- 新生儿麻醉暴露后的基因表达变化尚未得到充分理解.
研究的目的:
- 调查sevoflurane麻醉对新生儿暴露的成年大鼠学习和记忆的长期影响.
- 为了确定特定的基因和受新生儿暴露sevoflurane和dexmedetomidine影响的分子通路.
- 为了将基因表达变化与观察到的行为缺陷相关联.
主要方法:
- 新生小鼠 (产后第7天) 被暴露在sevoflurane,与或没有德克斯梅德托米丁前期治疗.
- 成年动物接受了行为测试,包括开放场地测试和记忆评估.
- 一项纳米链研究分析了新生小鼠大脑中770多个基因的表达.
主要成果:
- 在新生小鼠中暴露于塞沃兰导致成年动物微妙但明显的长期记忆缺陷.
- 德克斯梅德托米丁前期治疗只能缓解赛沃兰诱导的焦虑,而不是记忆力缺陷.
- 两种药物暴露后观察到基因表达差异,受影响的基因与突触可塑性,神经发生和亡有关.
结论:
- 新生儿暴露于赛沃氨酸可以诱导成年动物的持久记忆障碍.
- 观察到的行为缺陷很可能与影响关键神经元功能的改变基因表达模式有关.
- 进一步研究麻醉诱导的神经毒性及其分子基础是有必要的.
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