强迫症首次发病未服药患者脑静息态低频振幅研究  被引量:13

Amplitude of low-frequency fluctuation in the first-episode,drug-native obsessive-compulsive disorder patient:an resting state fMRI study

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作  者:杨涛[1] 程宇琪[1] 罗春蓉[2] 李海军[2] 余红军[2] 姜红燕[1] 许秀峰[1] 

机构地区:[1]昆明医学院第一附属医院精神科,650032 [2]昆明市第一人民医院放射科

出  处:《中华精神科杂志》2011年第3期140-144,共5页Chinese Journal of Psychiatry

基  金:云南省科技厅昆明医学院联合基金(2008C005R);云南省卫生科技计划项目(2009NS096,2009NS092)

摘  要:目的 探讨强迫症首次发病未服药患者静息脑神经活动的特点.方法 采用磁共振成像低频振幅(ALFF)方法,对昆明医学院第一附属医院22例强迫症患者(患者组)和22名健康志愿者(对照组)静息态脑血氧水平依赖(BOLD)信号活动的改变进行分析;采用功能磁共振成像技术进行数据采集,计算出各受试者的ALFF值;采用两样本t检验,以P〈0.001水平统计患者组与对照组的差异.结果 与对照组比较,患者组BOLD信号ALFF改变只存在增高的区域,主要分布在左前扣带回和左中扣带回;未发现患者组左前中扣带回的ALFF值与病程(r=0.004,P=0.985)、年龄(r=0.090,P=0.689)和受教育程度(r=0.048,P=0.831)、Yale-Brown强迫量表总分(r=0.007,P=0.977)、强迫思维分量表分(r=0.140,P=0.530)和强迫行为分量表分(r=0.100,P=0.660)的相关性.结论 静息状态下强迫症患者脑神经活动的ALFF存在异常,ALFF增高可能反映了患者大脑异常的情绪及行为监控.Objective To study the changes of amplitude of low-frequency fluctuation (ALFF) of the resting-fMRI in the patients with obsessive-compulsive disorder (OCD). Methods The resting-fMRI data of 22 OCD patients and 22 healthy controls were performed ALFF analysis. The amplitude of the blood oxygenation level dependent activation of the resting-state brain was investigated. Results The increased ALFF was only found in first-episode, drug-native OCD group compared with controls. The regions with increased ALFF were the left anterior cingulate and left middle cingulate gyrus (P〈0. 001, corrected,K≥33). No significant correlations between ALFF value in these regions and course of disease (r = 0. 004,P = 0. 985) , age (r = 0. 090, P = 0. 689) and level of education (r = 0. 048 , P =0. 831) , no significant correlations between ALFF value and Y-BOCS score (r= 0.007, P= 0.977) , obsessive score (r=0. 140,P =0.530) and compulsive score (r=0. 100, P = 0.660) were found. Conclusion Abnormal ALFF may exist in OCD in the resting-state. The increased ALFF might reflect the strengthening of the emotional management and action monitoring.

关 键 词:强迫性障碍 磁共振成像 静息态 低频振幅 

分 类 号:R445.2[医药卫生—影像医学与核医学]

 

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