当前位置:首页>南京>【科研新资讯】IF:11.9 南京医科大学附属脑科医院王纯团队揭示非自杀性自伤患者脑活动多个层级的神经变异性

【科研新资讯】IF:11.9 南京医科大学附属脑科医院王纯团队揭示非自杀性自伤患者脑活动多个层级的神经变异性

  • 2026-06-24 17:49:11
【科研新资讯】IF:11.9 南京医科大学附属脑科医院王纯团队揭示非自杀性自伤患者脑活动多个层级的神经变异性

  非自杀性自伤(NSSI)指个体在无明确自杀意图的情况下故意、反复损伤自身组织的行为(如利器划伤、撞击硬物等)。近年来其流行率持续上升,已成为全球公共卫生领域亟待解决的重要问题。NSSI患者常依赖自伤行为来调节负性情绪,这与认知灵活性受损密切相关。大脑是一个动态系统,其神经活动随时间不断波动,这种神经活动的变异性是支持个体灵活调整行为的重要基础。然而,以往研究多关注“静态”指标(如脑区平均激活水平或功能连接),NSSI是否与神经变异性异常有关尚不清楚。

  2026年6月5日,南京医科大学附属脑科医院王纯教授课题组在Molecular Psychiatry在线发表了题为Hierarchical neural variability reveals adaptive and maladaptive mechanisms of non-suicidal self-injury的研究论文。该研究基于全国多中心数据,系统考察了NSSI患者脑活动多个层级的神经变异性,并结合横断面和纵向症状学数据,揭示了不同层级神经变异性的功能意义,为理解NSSI的发病机制提供了新的理论视角。

  课题组基于全国多中心数据,首先从两个层面量化了NSSI的神经变异性:一是脑区间功能连接随时间的波动,即连接层级的变异性;二是全脑网络拓扑结构随时间的波动,即拓扑层级的变异性。随后结合基线期临床量表、3个月后的自伤行为频率,系统评估了不同层级神经变异性的临床相关性和预测价值。研究纳入了160名伴有NSSI的精神科患者(主要诊断为重性抑郁障碍、双相情感障碍或边缘型人格障碍)以及50名无NSSI史的精神科对照(主要诊断为重性抑郁障碍或双相情感障碍)。

  结果发现,NSSI患者在连接层级和拓扑层级均表现出更高的变异性,提示其大脑的动态活动存在广泛异常,且在一定程度上可区分有无自伤史。

  进一步分析显示,两类神经变异性具有“完全相反”的临床意义:基线期连接层级变异性较高的患者与更好的注意、情绪能力相关,且伴随更大的自伤行为改善;而基线期拓扑层级变异性较高的患者则与更强的冲动性相关,并伴随更少的自伤行为改善。这表明,脑区间信息交流的高度灵活可能对NSSI有适应意义,可发挥补偿功能;而脑网络整体结构稳定性的下降则可能是NSSI的负面机制,反映了全局控制的丧失。

  此外,针对传统静态脑功能指标的对比分析发现,神经变异性指标与传统静态脑功能指标在横断面上具有互补性,而在预测后续自伤行为变化方面,神经变异性指标则表现出更突出的价值。

  该研究首次揭示了NSSI患者脑动态多个层级的神经变异性异常及其临床意义,深化了对NSSI发病机制的理解——两个层级的变异性紊乱可能构成NSSI的神经机制基础,也为未来开展NSSI的风险识别、预后评估和个体化干预提供了新的思路。

 本研究为王纯教授课题组探讨NSSI发病机制及临床干预的系列工作之一,得到了全国多家医院的大力支持。该研究的通讯作者为南京医科大学附属脑科医院王纯教授,第一作者为课题组博士后李建。

原文链接:https://doi.org/10.1038/s41380-026-03671-8

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  1. CONNECT:[ UseTime:0.000518s ] mysql:host=127.0.0.1;port=3306;dbname=b460;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000585s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000268s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.001269s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000567s ]
  6. SELECT * FROM `set` [ RunTime:0.001648s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000612s ]
  8. SELECT * FROM `article` WHERE `id` = 592018 LIMIT 1 [ RunTime:0.000425s ]
  9. UPDATE `article` SET `lasttime` = 1782301579 WHERE `id` = 592018 [ RunTime:0.001100s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000572s ]
  11. SELECT * FROM `article` WHERE `id` < 592018 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001050s ]
  12. SELECT * FROM `article` WHERE `id` > 592018 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000500s ]
  13. SELECT * FROM `article` WHERE `id` < 592018 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002909s ]
  14. SELECT * FROM `article` WHERE `id` < 592018 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005364s ]
  15. SELECT * FROM `article` WHERE `id` < 592018 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002365s ]
0.087884s