前肢皮质,但不是它的核团聚投影,调节惩罚酒精的自我管理
Maya N Bluitt1, Wen Liu2, Ana C Muñoz2
1Neuroscience Curriculum, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, United States; Bowles Center for Alcohol Studies, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, United States.
Neuropharmacology
|November 17, 2025
概括
这项研究揭示了前皮质 (PrL) 在饮酒障碍 (AUD) 中发挥关键作用,通过在厌恶条件下影响饮酒行为. 操纵PrL活动会影响老鼠对负面后果的反应,突出其在决策中的作用.
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
- 成研究 研究成研究
背景情况:
- 酒精使用障碍 (AUD) 的特点是,尽管有负面后果,但仍在继续饮酒,这种行为在少数饮酒者中见到.
- 驱使这种持续饮酒的潜在神经生物学机制尚未得到充分理解.
- 中间前额叶皮层 (mPFC) 已被认为在决策和行为抑制方面发挥着至关重要的作用.
研究的目的:
- 为了研究中介前额叶皮层 (mPFC) 亚区域在调解酒精消费的作用,尽管负面的后果.
- 为了检查酒精自我管理期间对厌恶刺激的反应的个体差异.
主要方法:
- 在雄性Wistar大鼠中利用了一种足部冲击惩罚的酒精自我管理范式.
- 根据反应抑制,将大鼠分为冲击敏感 (SS) 和抗冲击 (SR) 亚组.
- 采用c-Fos免疫组织化学来评估神经元激活和化学遗传学来操纵PrL活动.
主要成果:
- 在mPFC的前临界 (PrL) 细分部分的神经元激活与处罚酒精摄入期间抑制的反应相关.
- 在SS和SR大鼠中,PrL的化学遗传激活增加了被惩罚的酒精自我管理.
- 在SR大鼠中,PrL的化学基因抑制降低了受到惩罚的特异性反应.
结论:
- 前皮质 (PrL) 参与调解处罚酒精自给的个体变化.
- 尽管有不良结果,但PrL活动会影响继续饮酒的决定.
- 这些发现表明PrL在酒精使用障碍 (AUD) 的神经生物学中的作用.
相关概念视频
Diencephalon: Anatomical Regions
4.7K
The diencephalon, etymologically translated as 'through brain,' plays an integral role as the conduit between the cerebrum and the vast extent of the nervous system. However, the olfactory system is an exception, as it interfaces directly with the cerebrum. The diencephalon, deeply ensconced beneath the cerebrum, primarily consists of three paired structures — the thalamus, hypothalamus, and epithelamus. It also includes accessory structures such as the subthalamus, which houses the...
4.7K
Functional Brain Systems: Limbic System
6.3K
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
6.3K
Diencephalon: Hypothalamus and Coordination
3.5K
The hypothalamus is a small yet highly complex and essential brain region that plays a crucial role in regulating various bodily functions. Anatomically, it is located at the base of the brain, just above the brainstem and below the thalamus, forming part of the limbic system.
The hypothalamus interacts with other brain regions, including the pituitary gland, through a direct physical connection called the hypothalamic-pituitary axis. The hypothalamus receives somatic and visceral inputs and...
The hypothalamus interacts with other brain regions, including the pituitary gland, through a direct physical connection called the hypothalamic-pituitary axis. The hypothalamus receives somatic and visceral inputs and...
3.5K
Diencephalon: Thalamus and Information Relay
3.7K
The thalamus, often called “the gateway to the cerebral cortex,” is vital in processing and directing sensory and motor signals throughout the brain. Almost all inputs destined for the cerebral cortex, except for olfactory signals, are relayed through the thalamus. The thalamus is a sophisticated relay station, channeling information from various brain regions to the cerebral cortex, as well as a filter, prioritizing certain signals over others based on current physiological...
3.7K


