在酒精使用障碍中,从额叶皮层到条体的非典型有效连接性
Hongwen Song1,2,3, Ping Yang4, Xinyue Zhang1
1Department of Radiology, The First Affiliated Hospital of USTC, Hefei National Research Center for Physical Sciences at the Microscale and School of Life Science, Division of Life Science and Medicine, University of Science and Technology of China, Hefei, China.
Translational psychiatry
|September 18, 2024
概括
这项研究使用先进的fMRI分析揭示了酒精使用障碍 (AUD) 中大脑连接的改变. 这些发现提供了对成严重程度和潜在治疗目标的神经基础的新见解.
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.
- 医疗成像医学成像
背景情况:
- 酒精使用障碍 (AUD) 的特点是大脑连接受损,影响功能整合.
- 之前的研究主要集中在非定向的功能连接上,使得AUD中的定向有效连接 (EC) 的变化不清楚.
研究的目的:
- 用多变量模式分析 (MVPA) 和光谱动态因果建模 (DCM) 来研究AUD个体的定向有效连接 (EC) 的变化.
- 用脑成像数据将AUD个体从健康对照 (HCs) 进行分类,并预测成严重程度.
主要方法:
- 招募了32名AUD和30名HC的禁欲男性进行休息状态fMRI数据收集.
- 基于区域同质性 (ReHo) 的雇佣MVPA用于分类和成严重程度的预测.
- 利用光谱DCM来分析信息大脑区域的有效连接.
主要成果:
- 基于ReHo的MVPA在区分AUD和HC (98.57%) 和预测成严重程度方面取得了很高的准确性 (AUDIT R2=0.38,MAST R2=0.29).
- 在一个独立的数据集中验证的结果 (AUD vs. HCs:准确率91.67%,AUDIT R2=0.17,MAST R2=0.20).
- 在AUD中确定了从左侧SMA前到右侧膜,从右侧dACC到右侧膜,以及从右侧LOFC到右侧NACC的EC下降. 电商变化调解了成严重程度和行为指标之间的关系.
结论:
- 这项研究为AUD患者的自我控制障碍和强迫性饮酒背后的神经机制提供了新的因果洞察力.
- 调查结果突出了特定的定向连接缺陷及其在成严重性中的作用.
- 结果为改善AUD的诊断和治疗策略提供了潜力.
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