机构地区:[1]安徽医科大学附属省立医院神经外科,脑功能与脑疾病安徽省重点实验室,合肥230001 [2]安徽医科大学第三附属医院、合肥市滨湖医院神经外科
出 处:《中华行为医学与脑科学杂志》2015年第7期595-598,共4页Chinese Journal of Behavioral Medicine and Brain Science
基 金:国家自然科学基金项目(30670683,30973084);安徽省自然科学基金项目(11040606M167);安徽省科技攻关计划项目(1301042201);安徽省重点实验室绩效考核项目(1306c083028)
摘 要:目的探讨海洛因依赖者和戒断者背侧注意网络(DAN)的功能影像学变化及其对注意功能的影响。方法17例海洛因依赖者和15例海洛因戒断者分别进行神经心理学测评了解依赖者和戒断者注意功能的差异;基于静息态功能磁共振成像(fMRI)扫描,利用独立成分分析(ICA)方法提取依赖组和戒断组的DAN,进行组内及组间分析,将组间差异有统计学意义的脑区与Stroop测验干扰效应进行相关分析。结果神经心理学测评表明,戒断组在数字广度测验(倒背)(P=0.0363)、数字符号测验(书写)(P=0.0195)、Stroop测验C(反应时)(P=0.0379)、Stroop测验C(错误数)(P=0.0014)以及Stroop测验干扰效应(P=0.0002)等一些相对复杂的注意功能测验中,其结果明显优于依赖组(均P〈0.05);神经影像学发现依赖组与戒断组具有相似的DAN分布,主要包括双侧顶内沟、中央后回及额眼区;相对于依赖组的DAN,海洛因戒断组左侧顶上小叶、右侧顶下小叶及左侧顶下小叶的功能连接明显增强(P〈0.05);海洛因依赖组左侧顶上小叶(MIN坐标:-24,-75,48)、右侧侧顶下小叶(39,-54,45)及左侧顶下小叶(-33,-51,57)的功能连接均与Stroop测验干扰效应呈负相关(r=-0.79、-0.69、-0.64,P〈0.01),而戒断组上述脑区与Stroop测验干扰效应无相关性。结论海洛因成瘾会导致注意功能损害,静息态下海洛因戒断者DAN的左侧顶上小叶及双侧顶下小叶的功能连接明显强于依赖者,这可能是戒断后注意功能改善的神经机制之一。Objective To explore the functional imaging alteration of dorsal attention network (DAN) be- tween heroin addicts and heroin abstainers and probe into its influence on attentional function. Methods Atten- tion-related neuropsychological assessments were applied to evaluate the difference of attentional function between heroin addicts and heroin abstainers.With the functional magnetic resonance imaging (fMRI) data obtained from 17 heroin addicts and 15 heroin abstainers at resting state ,we extracted the DANs of heroin withdrawal group and heroin dependence group respectively by using independent component analysis (1CA) and analysed the differ- ences of intra-group and inter-group, then correlation analysis was performed among brain areas which have signifi- cant difference between groups and Stroop interference effect test. Results Compared with the heroin dependence group, there was a better resuh of attentional function in the heroin withdrawal group (P〈0.05), especially at the digit span test (backward) (P = 0.0363 ), digit symbol test ( writing ) (P = 0.0195 ), Stroop test C ( reaction ) (P = 0.0379) , Stroop test C ( error ) (P= 0.0014) and Stroop interference effect test (P= 0.0002 ). Neuroimaging findings demonstrated that there was a similar DAN in the heroin withdrawal group and heroin dependence group which mainly included the bilateral intraparietal suleus, postcentral gyms and frontal eye field. Compared with the DAN of heroin addicts, significantly enhanced functional connectivity within the DAN of heroin abstainers was observed in the left superior parietal lobule ( MIN : -24, -75,48 ), right inferior parietal lobule ( MIN : 39, -54,45 ) and left in- ferior parietal lobule (MIN:-33,-51,57) .Significant negative correlations were observed between these brain are- as and Stroop interference effect test in the heroin dependence group ( r=-0.79,-0.69,-0.64, P〈0.01 ), but not in the heroin withdrawal group. Conclusions Heroin
关 键 词:海洛因 功能磁共振成像 独立成分分析 背侧注意网络
分 类 号:R445.2[医药卫生—影像医学与核医学] R749.64[医药卫生—诊断学]
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