Overlapping and distinct gray and white matter abnormalities in schizophrenia and bipolar I disorder

被引:43
作者
Anderson, Dana [1 ,2 ]
Ardekani, Babak A. [3 ]
Burdick, Katherine E. [4 ,5 ]
Robinson, Delbert G. [1 ,2 ,6 ,7 ]
John, Majnu [1 ,2 ]
Malhotra, Anil K. [1 ,2 ,6 ,7 ]
Szeszko, Philip R. [1 ,2 ,6 ,7 ]
机构
[1] North Shore LIJ Hlth Syst, Feinstein Inst Med Res, Manhasset, NY USA
[2] North Shore LIJ Hlth Syst, Zucker Hillside Hosp, Glen Oaks, NY USA
[3] Nathan S Kline Inst Psychiat Res, Orangeburg, NY 10962 USA
[4] Mt Sinai Sch Med, Dept Psychiat, New York, NY USA
[5] Mt Sinai Sch Med, Dept Neurosci, New York, NY USA
[6] Hofstra North Shore LIJ Sch Med, Dept Psychiat, Hempstead, NY USA
[7] Hofstra North Shore LIJ Sch Med, Dept Mol Med, Hempstead, NY USA
关键词
bipolar disorder; diffusion tensor imaging; gray matter; schizophrenia; white matter; VOXEL-BASED MORPHOMETRY; SCHIZOAFFECTIVE DISORDER; 1ST-EPISODE SCHIZOPHRENIA; SUSCEPTIBILITY GENE; VOLUME REDUCTION; FRONTAL-LOBE; DIFFUSION; MRI; ASSOCIATION; REGISTRATION;
D O I
10.1111/bdi.12096
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
Objectives: Schizophrenia and bipolar disorder may share common neurobiological mechanisms, but few studies have directly compared gray and white matter structure in these disorders. We used diffusion-weighted magnetic resonance imaging and a region of interest based analysis to identify overlapping and distinct gray and white matter abnormalities in 35 patients with schizophrenia and 20 patients with bipolar I disorder in comparison to 56 healthy volunteers. Methods: We examined fractional anisotropy within the white matter and mean diffusivity within the gray matter in 42 regions of interest defined on a probabilistic atlas following non-linear registration of the images to atlas space. Results: Patients with schizophrenia had significantly lower fractional anisotropy in temporal (superior temporal and parahippocampal) and occipital (superior and middle occipital) white matter compared to patients with bipolar disorder and healthy volunteers. By contrast, both patient groups demonstrated significantly higher mean diffusivity in frontal (inferior frontal and lateral orbitofrontal) and temporal (superior temporal and parahippocampal) gray matter compared to healthy volunteers, but did not differ from each other. Conclusions: Our study implicates overlapping gray matter frontal and temporal lobe structural alterations in the neurobiology of schizophrenia and bipolar I disorder, but suggests that temporal and occipital lobe white matter deficits may be an additional risk factor for schizophrenia. Our findings may have relevance for future diagnostic classification systems and the identification of susceptibility genes for these disorders.
引用
收藏
页码:680 / 693
页数:14
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