کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4344089 1615160 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The impulsivity behavior is correlated with prefrontal cortex gray matter volume reduction in heroin-dependent individuals
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
The impulsivity behavior is correlated with prefrontal cortex gray matter volume reduction in heroin-dependent individuals
چکیده انگلیسی

PurposeChronic exposure to heroin induced cerebral structural abnormalities may underlie heroin-related behaviors. The aim of this study was to: (1) identify cerebral structural abnormalities in heroin-dependent individuals (HDIs) by an automated and unbiased morphometric technique. (2) Define the correlation between these cerebral structural abnormalities and the impulsivity characteristic in HDIs.Methods24 HDIs and 24 control subjects were completed with (1) high resolution structural magnetic resonance imaging scanning and analysis of gray matter volume using voxel-based morphometry implemented in Statistical Parametric Mapping and (2) a Chinese translation Barratt Impulsiveness Scale-11 questionnaire survey. Differences in regional gray matter volume were tested using an analysis of covariance model, co-varying for global gray matter and age. Statistical maps were set at p < 0.05, corrected for multiple comparisons. The abnormal brain regions were correlated with the duration of heroin use and impulsivity scores.ResultsAfter adjusting for effects of age and total gray matter volume, cortical gray matter volume in the bilateral medial prefrontal cortex, bilateral dorsal lateral prefrontal cortex, and right fusiform cortex were significantly reduced in HDIs. Moreover, the gray matter volume in prefrontal cortex that showed group differences was negatively correlated with the duration of heroin use and negatively correlated with the impulsivity characteristic in HDIs.ConclusionThese findings reveal the prefrontal cortex was impaired in HDIs, meanwhile, indicate the changes in gray matter volume are relating to the duration of heroin use and the impulsivity characteristic of the HDIs.


► Gray matter volume of prefrontal cortex is abnormality in heroin-dependent individuals.
► The abnormal gray matter volume was associated with the duration of heroin use.
► The abnormal gray matter volume was associated with the impulsivity characteristic in HDI.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 538, 22 March 2013, Pages 43–48
نویسندگان
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