抗精神病药物对具有精神病特征的大型抑郁症功能连接的作用
Nicholas H Neufeld1,2, Lindsay D Oliver2, Benoit H Mulsant1,2
1Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Molecular psychiatry
|May 31, 2023
概括
抗精神病药物 olanzapine 在具有精神病特征的大型抑郁症中可以稳定大脑连接. 继续接受 olanzapine 的患者表现出稳定的功能连接,与转换为安慰剂的患者不同.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 抗精神病药物对主要抑郁症 (MDD) 休息状态功能连接性的影响尚不清楚.
- 具有精神病特征的大型抑郁症 (MDDPsy) 在治疗和理解大脑功能方面存在独特的挑战.
研究的目的:
- 研究一种抗精神病药物 olanzapine 对MDDPsy患者静止状态功能连接的作用.
- 与安慰剂相比,要确定 olanzapine 是否稳定了大脑网络内部和大脑网络之间的功能连接.
主要方法:
- 利用MRI扫描来评估88名MDDPsy患者的功能连接和网络拓在基线和随访时.
- 参与者接受了塞特拉林加奥兰扎,然后随机选择继续服用奥兰扎或切换到安慰剂.
- 分析了二级视觉网络与大脑其余部分之间的功能连接的变化,以及使用图表指标的网络拓.
主要成果:
- 对于二级视觉网络与大脑其余部分之间的功能连接,发现了显著的治疗时间相互作用.
- 在继续服用奥兰zapine的患者中,该网络中的功能连接保持稳定,但在转换为安慰剂的患者中下降.
- 在 olanzapine 和安慰剂组之间没有观察到网络拓变化的显著差异.
结论:
- 在患有MDDPsy的患者中,olanzapine可能在稳定功能连接方面发挥作用,特别是在二级视觉网络内.
- 这些发现表明,通过调节大脑网络稳定性,奥兰扎在治疗精神病性抑郁症中的有效性可能有潜在的机制.
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