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在母亲分离后加强伤害检测:通过吸入的阿米洛里德进行跨代传播和可逆性

Marco Battaglia^1,2,3,4, Orlane Rossignol³, Louis-Etienne Lorenzo³

¹Department of Psychiatry, University of Toronto, Toronto, ON, Canada.

Science advances

|October 4, 2023

概括

早期的母亲分离增强了防御反应,包括呼吸和疼痛敏感性,跨越了三代. 这种与酸感应离子通道 (ASIC) 相关的生物记忆被阿米洛里德逆转.

科学领域:

神经科学是一个神经科学.
遗传学是一个遗传学.
心理学心理学心理学

背景情况:

早期的逆境可能会导致防御行为持久变化.
母亲分居是研究早期压力影响的常见模型.

研究的目的:

调查重复交叉培养 (RCF) 对同居和感觉反应的跨代影响.
探索分子机制,特别是酸感应离子通道 (ASIC),参与这些跨代适应.
评估ASIC抗体在减轻这些影响方面的治疗潜力.

主要方法:

在动物模型中使用重复交叉养 (RCF) 范式.
评估呼吸 (高通风至高头) 和感觉敏感度.
在特定的大脑区域 (长髓,周水管灰质) 的ASIC1,ASIC2和ASIC3的量化信使RNA (mRNA) 转录.
进行 nebulized amiloride,一种ASIC对抗剂,以评估其对反应效应的影响.

主要成果:

在第一代和随后的两代中,RCF暴露导致了增强的高通风和感觉敏感性.
跨代ASIC1,ASIC2和ASIC3mRNA的增加在延长性脑髓和周水管灰质中被观察到.
雾化阿米洛里德治疗使所有受影响世代的呼吸和感觉反应正常化.

结论:

早期的逆境可以建立一个跨代的生物记忆,影响防御反应.
酸感应离子通道 (ASIC) 在调解这些遗传适应方面发挥着至关重要的作用.
雾化阿米洛里德显示为治疗早期压力,焦虑和疼痛相关疾病的治疗策略有前途.

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