选择性激活D3多巴胺受体改善了DOI诱导的头部动,伴随着皮质干层处理的变化
Ana María Estrada-Sánchez1,2, Claudia Rangel-Barajas1, Andrew G Howe3,4
1Program in Neuroscience and Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA.
International journal of molecular sciences
|June 10, 2023
概括
多巴胺D3受体的激活减少了小鼠的非自愿头部抽. 这种效应涉及皮质干道中相关的神经活动的增加,这表明运动障碍的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 多巴胺D3受体在多巴胺系统中至关重要,并与运动和精神疾病有关.
- 向D3受体为神经退行性和神经精神疾病提供了潜在的治疗益处.
研究的目的:
- 研究D3受体激活对DOI诱导的小鼠头部抽的影响.
- 探索D3受体激动剂的行为和电生理效应.
主要方法:
- 给小鼠注射了D3受体激动剂 (完全或部分),其次是DOI.
- 行为分析测量了头部抽的发作,数量和频率.
- 电生理学记录评估了运动皮质和背上条纹体中的神经元活动.
主要成果:
- 这两种D3激动剂都显著延迟了发作,并减少了DOI诱导的头部抽的数量和频率.
- D3受体的激活导致单个单元活动的轻微变化,主要是在背上条纹体.
- 在背上条纹体和皮质金字塔神经元和条纹中等棘手神经元之间观察到相关的发射增加.
结论:
- D3受体的激活有效地控制了DOI诱导的非自愿运动.
- 观察到的效应部分是由增强的皮质干系相关活性介导的.
- 对这些机制的进一步研究可能会导致涉及非自愿运动的神经病理的新疗法.
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