阿片类受体通过可分离的细胞和分子机制在前额叶皮层内调节抑制
Rebecca H Cole1,2,3, Marie-Charlotte Allichon1,2,3, Max E Joffe4,2,3
1Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 15219, USA.
概括
这项研究揭示了Mu (MOR),Delta (DOR) 和Kappa阿片类受体 (KOR) 如何在前额叶皮层 (PFC) 中差异调节抑制性传播. DOR和MOR对内部神经元活动有明显的影响,影响PFC微电路.
科学领域:
- 神经科学是一个神经科学.
- 神经药理学神经药理学
- 细胞电生理学 细胞电生理学
背景情况:
- 在皮质抑制微电路中的异常信号与神经精神疾病有关.
- 神经调节系统,包括阿片类药物信号传输,关键调节内部神经元活动和突触传输.
- 皮层内部神经元表达高水平的阿片类受体,但它们在前额叶皮层 (PFC) 微电路中的精确作用尚未完全理解.
研究的目的:
- 详细描述Mu类阿片受体 (MOR),DELTA类阿片受体 (DOR) 和Kappa类阿片受体 (KOR) 如何调节小鼠PFC中的抑制性传播.
- 为了研究MOR和DOR对不同内部神经元群体的细胞类型特异性影响.
- 阐明抑制性传播的MOR和DOR调节背后的前和后突触机制.
主要方法:
- 在雄性和雌性小鼠中全细胞补丁电生理学.
- 光遗传学和病毒工具用于细胞类型特定的操纵.
- 电气唤起的GABA释放和自发抑制传输记录在前临床PFC中.
主要成果:
- DOR激活最有效地抑制了在2/3层前临床PFC中的自发抑制传播.
- 与DOR和KOR相比,MOR引起了更大的电气引起的GABA释放的急性抑制.
- 从特定的内部神经元亚型 (parvalbumin, somatostatin, cholecystokinin,血管活性肠) 来分别调节MOR和DOR的抑制传播.
- DOR通过同时发生的前和后突触修饰而起作用,而MOR的作用因内部神经元细胞类型而异 (体内突触或前突触).
结论:
- 在控制PFC抑制性传播方面,MOR和DOR表现出不同的监管作用和机制.
- 内部神经元亚型的阿片类受体调节有助于PFC微电路功能的复杂性.
- 了解这些不同的阿片类受体作用对于破译PFC在行为中的作用和神经精神疾病潜在的治疗策略至关重要.
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