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多巴胺D3受体参与雄性大鼠的冲动性选择决策

Hui Shen¹, Zilu Ma¹, Emma Hans¹

¹Neuroimaging Research Branch, National Institute on Drug Abuse, Intramural Research Program, Baltimore, MD, 21224, USA.

Neuropharmacology

|June 25, 2024

概括

高冲动性老鼠在核中显示D3受体表达的减少. 选择性D3受体激动剂可以治疗冲动性,但对抗剂没有显示治疗潜力.

科学领域:

神经科学是一个神经科学.
行为神经科学行为神经科学
药理学药理学是指药理学的学科.

背景情况:

冲动性决策与冲动控制和物质使用障碍有关.
冲动选择的神经机制尚未完全理解.
多巴胺和D2/3受体参与其中,但D1,D2和D3受体的不同作用尚不清楚.

研究的目的:

研究D1,D2和D3受体在冲动性决策中的作用.
通过延迟折扣任务来识别高冲动性的神经相关物.
探索D3受体调节的治疗潜力.

主要方法:

使用食物奖励延迟折扣任务 (DDT) 将老鼠分类为低或高冲动.
通过RNAscope在位杂交检查D1,D2和D3受体基因表达.
选择性D3受体激动剂 (FOB02-04) 和对抗剂 (VK4-116) 系统地被使用.

主要成果:

高冲动性大鼠在核突 (NAc) 中显示出较低的D2和D3受体表达.
在高度冲动的老鼠中,D3受体表达特别减少.
在高冲动性大鼠中,D3受体激动剂降低了冲动性;在两组中,对抗剂增加了冲动性和遗漏选择.

结论:

冲动性决策与NAc中的D3受体表达减少有关.
选择性D3受体激动剂显示出缓解冲动性的潜力.
D3受体对抗剂可能会加剧冲动和遗漏行为.

关键词:

D3受体的受体D3受体的受体作为D3受体激活剂.它是D3受体对抗剂.决策方式决策方式多巴胺是一种多巴胺.美国FOB02-04 冲动选择是一种冲动的选择.冲动性是一种冲动性.奖励延迟折扣任务的任务在VK4-1166中使用.

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