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Brain structural plasticity in survivors of a major earthquake
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نویسنده
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lui s. ,chen l. ,yao l. ,xiao y. ,wu q.-z. ,zhang j.-r. ,huang x.-q. ,zhang w. ,wang y.-q. ,chen h.-f. ,chan r.c.k. ,sweeney j.a. ,gong q.-y.
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منبع
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journal of psychiatry and neuroscience - 2013 - دوره : 38 - شماره : 6 - صفحه:381 -387
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چکیده
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Background: stress responses have been studied extensively in animal models,but effects of major life stress on the human brain remain poorly understood. the aim of this study was to determine whether survivors of a major earthquake,who were presumed to have experienced extreme emotional stress during the disaster,demonstrate differences in brain anatomy relative to individuals who have not experienced such stressors. methods: healthy survivors living in an area devastated by a major earthquake and matched healthy controls underwent 3-dimentional high-resolution magnetic resonance imaging (mri). survivors were scanned 13-25 days after the earthquake; controls had undergone mri for other studies not long before the earthquake. we used optimized voxel-based morphometry analysis to identify regional differences of grey matter volume between the survivors and controls. results: we included 44 survivors (17 female,mean age 37 [standard deviation (sd) 10.6] yr) and 38 controls (14 female,mean age 35.3 [sd 11.2] yr) in our analysis. compared with controls,the survivors showed significantly lower grey matter volume in the bilateral insula,hippocampus,left caudate and putamen,and greater grey matter volume in the bilateral orbitofrontal cortex and the parietal lobe (all p < 0.05,corrected for multiple comparison). limitations: differences in the variance of survivor and control data could impact study findings. conclusion: acute anatomic alterations could be observed in earthquake survivors in brain regions where functional alterations after stress have been described. anatomic changes in the present study were observed earlier than previously reported and were seen in prefrontal-limbic,parietal and striatal brain systems. together with the results of previous functional imaging studies,our observations suggest a complex pattern of human brain response to major life stress affecting brain systems that modulate and respond to heightened affective arousal. © 2013 canadian medical association.
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آدرس
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department of radiology,huaxi mr research center (hmrrc),west china hospital of sichuan university, China, department of radiology,huaxi mr research center (hmrrc),west china hospital of sichuan university, China, department of radiology,huaxi mr research center (hmrrc),west china hospital of sichuan university, China, department of radiology,huaxi mr research center (hmrrc),west china hospital of sichuan university, China, department of radiology,huaxi mr research center (hmrrc),west china hospital of sichuan university, China, department of radiology,huaxi mr research center (hmrrc),west china hospital of sichuan university, China, department of radiology,huaxi mr research center (hmrrc),west china hospital of sichuan university, China, department of psychiatry,state key lab of biotherapy,west china hospital of sichuan university, China, school of life science and technology,university of electronic science and technology of china, China, school of life science and technology,university of electronic science and technology of china, China, neuropsychology and applied cognitive neuroscience laboratory,institute of psychology,chinese academy of sciences, China, university of texas southwestern medical center,dallas,tx, United States, department of radiology,huaxi mr research center (hmrrc),west china hospital of sichuan university, China
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Authors
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