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微质介导的透性AMPAR在核中的积累驱动在可卡因戒断期间的超位运动

Ingrid Reverte¹, Claudia Marchetti¹, Sara Pezza¹

¹Department of Physiology and Pharmacology, Sapienza University, Laboratory affiliated to Institute Pasteur Italia - Fondazione Cenci Bolognetti, Rome, Italy; IRCCS Santa Lucia Foundation, Rome, Italy.

Brain, behavior, and immunity

|November 15, 2023

概括

微质细胞对于可卡因戒断期间的突触变化至关重要. 削弱微质细胞可以防止可卡因诱导的行为和突触改变,这表明它们是预防复发的治疗目标.

科学领域:

神经科学是一个神经科学.
神经免疫学神经免疫学
成研究研究成研究

背景情况:

可卡因戒断涉及到核突 (NAc) 的突触变化,包括透AMPA受体 (CP-AMPAR) 的积累.
神经免疫变化,特别是涉及微质细胞,越来越多地与突触可塑性变化有关,有助于物质滥用和复发.
微质在可卡因戒断期间NAc突触适应中的确切作用尚不清楚.

研究的目的:

为了研究微质在可卡因戒断后的神经适应 (NAc) 中的作用.
为了确定微质是否对突触可塑性变化和与可卡因诱导的有条件位置偏好 (CPP) 相关的行为敏感化是必要的.

主要方法:

在可卡因CPP诱导后的戒断期内,使用PLX5622补充饮食减少了微质.
状脊柱密度和NAc外中CP-AMPAR的存在被测量在抽取后.
进行了行为测试,包括有条件的超位运动和上下文关联记忆.

主要成果:

微质枯竭阻止了可卡因诱导的CP-AMPAR积累和NAc外中树突脊柱密度的改变.
微质细胞的枯竭取消了有条件的超位动,但没有影响药物背景关联记忆.
在晚期戒断阶段,微质细胞表现出减少的分支,树木化区域和控制域.

结论:

微质是可卡因戒断期间NAc中突触适应的关键调解者.
这些发现强调了微质细胞作为预防可卡因复发的潜在治疗点.
在戒断期间微质参与突触可塑性对于行为敏感化至关重要.

关键词:

这就是CP-AMPAR.这是可卡因可卡因.树状的棘树状的棘吸毒成吸毒成吸毒成吸毒成吸毒成药物戒断药物戒断是什么微质细胞中的微质细胞核积累的中心 (nucleus accumbens).

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