氧化的戒断与大鼠中可卡因自我管理的增加和异常的固谷氨酸可塑性有关
Shailesh N Khatri1, Hanaa Ulangkaya2, Erin E Maher1
1Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, USA.
Neuropharmacology
|October 21, 2023
概括
阿片类药物戒断症状可能会导致阿片类药物使用障碍 (OUD) 患者使用可卡因. 这项临床前研究发现,连续使用药物进一步破坏了大脑的谷氨酸信号传输,影响了核中神经传递.
科学领域:
- 神经科学是一个神经科学.
- 成研究 研究成研究
- 药理学 药理学是指药理学的学科.
背景情况:
- 阿片类药物使用障碍 (OUD) 通常与其他物质使用,特别是可卡因一起发生.
- 连续使用阿片类药物和可卡因是多种物质滥用的常见模式.
- 临床前模型通常检查单一药物的使用,限制了对多物质对大脑信号传递的影响的理解.
研究的目的:
- 在新型大鼠模型中调查依据顺序性氧化和可卡因自我管理的神经生物学机制.
- 为了检查可卡因使用如何影响阿片类药物诱导的变化,在核心核的核心 (NAcore) 谷氨酸信号传递.
- 为了确定戒断症状是否会导致后续使用可卡因.
主要方法:
- 建立了一种使用A-B-A-B设计的顺序性氧化和可卡因自我管理 (SA) 的老鼠模型.
- 在不同时间点评估了氧化戒断的体征.
- 测量NAcoreGLT-1蛋白水平和谷氨酸可塑性 (AMPA/NMDA比率) 在药物SA.之后.
主要成果:
- 老鼠成功获得了氧化和可卡因的SA.
- 氧化戒断症状与随后的可卡因消费有积极的相关性.
- 在氧化SA之后使用可卡因加剧了GLT-1的下调,并降低了NAcore中的AMPA/NMDA比率.
结论:
- 阿片类药物戒断的行为表现可能会导致可卡因使用.
- 连续使用氧化和可卡因导致NAcore中谷氨酸信号的显著失调.
- 这种临床前模型提供了OUD中多种物质使用的神经生物学基础的见解.
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