Selective micro-structural integrity impairment of the isthmus subregion of the corpus callosum in alcohol-dependent males.

Abstract:

BACKGROUND:Previous studies have provided evidence that alcohol-dependent patients have abnormality in corpus callosum (CC); however, it is unclear whether micro-structural integrity of the CC subregions is differentially affected in this disorder. METHODS:In this study, a total of 39 male individuals, including 19 alcohol-dependent patients and 20 age-matched healthy controls, underwent diffusion tensor imaging (DTI). CC was reconstructed by DTI tractography and was divided into seven subregions. Multiple diffusion metrics of each subregion were compared between two groups. RESULTS:Compared to healthy controls, patients exhibited increased axial diffusivity (P = 0.007), radial diffusivity (P = 0.009) and mean diffusivity (P = 0.005) in the isthmus. In addition, we observed that daily alcohol intake was correlated positively with radial diffusivity and mean diffusivity and negatively with fractional anisotropy, while abstinence time of hospitalization was negatively correlated with mean diffusivity in the patients. CONCLUSION:These findings suggest a selective micro-structural integrity impairment of the corpus callosum subregions in alcohol dependence, characterized by axon and myelin alterations in the isthmus.

journal_name

BMC Psychiatry

journal_title

BMC psychiatry

authors

Wang Y,Li X,Zhang C,Wang H,Li Z,Zhu J,Yu Y

doi

10.1186/s12888-019-2079-6

subject

Has Abstract

pub_date

2019-03-25 00:00:00

pages

96

issue

1

issn

1471-244X

pii

10.1186/s12888-019-2079-6

journal_volume

19

pub_type

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