Abstract:
OBJECTIVES:Many morphometric magnetic resonance imaging (MRI) studies that have investigated the presence of gray matter (GM) volume abnormalities associated with the diagnosis of bipolar disorder (BD) have reported conflicting findings. None of these studies has compared patients with recent-onset psychotic BD with asymptomatic controls selected from exactly the same environment using epidemiological methods, or has directly contrasted BD patients against subjects with first-onset psychotic major depressive disorder (MDD). We examined structural brain differences between (i) BD (type I) subjects and MDD subjects with psychotic features in their first contact with the healthcare system in Brazil, and (ii) these two mood disorder groups relative to a sample of geographically matched asymptomatic controls. METHODS:A total of 26 BD subjects, 20 subjects with MDD, and 94 healthy controls were examined using either of two identical MRI scanners and acquisition protocols. Diagnoses were based on DSM-IV criteria and confirmed one year after brain scanning. Image processing was conducted using voxel-based morphometry. RESULTS:The BD group showed increased volume of the right dorsal anterior cingulate cortex relative to controls, while the MDD subjects exhibited bilateral foci GM deficits in the dorsolateral prefrontal cortex (p < 0.05, corrected for multiple comparisons). Direct comparison between BD and MDD patients showed a focus of GM reduction in the right-sided dorsolateral prefrontal cortex (p < 0.05, corrected for multiple comparisons) and a trend (p < 0.10, corrected) toward left-sided GM deficits in the dorsolateral prefrontal cortex of MDD patients. When analyses were repeated with scanner site as a confounding covariate the finding of increased right anterior cingulate volumes in BD patients relative to controls remained statistically significant (p=0.01, corrected for multiple comparisons). CONCLUSIONS:These findings reinforce the view that there are important pathophysiological distinctions between BD and MDD, and indicate that subtle dorsal anterior cingulate abnormalities may be relevant to the pathophysiology of BD.
journal_name
Bipolar Disordjournal_title
Bipolar disordersauthors
de Azevedo-Marques Périco C,Duran FL,Zanetti MV,Santos LC,Murray RM,Scazufca M,Menezes PR,Busatto GF,Schaufelberger MSdoi
10.1111/j.1399-5618.2011.00896.xsubject
Has Abstractpub_date
2011-02-01 00:00:00pages
28-40issue
1eissn
1398-5647issn
1399-5618journal_volume
13pub_type
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pub_type: 杂志文章,多中心研究,随机对照试验
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pub_type: 杂志文章,随机对照试验
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更新日期:2019-11-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2000-06-01 00:00:00
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doi:10.1111/j.1399-5618.2010.00825.x
更新日期:2010-06-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章,评审
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更新日期:2020-02-01 00:00:00
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pub_type: 杂志文章,meta分析,评审
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更新日期:2012-03-01 00:00:00
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pub_type: 杂志文章
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更新日期:2020-06-24 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/j.1399-5618.2011.00906.x
更新日期:2011-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1034/j.1399-5618.1999.10106.x
更新日期:1999-09-01 00:00:00
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pub_type: 杂志文章,评审
doi:10.1111/bdi.12595
更新日期:2018-05-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/j.1399-5618.2004.00122.x
更新日期:2004-08-01 00:00:00
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pub_type: 杂志文章,多中心研究
doi:10.1111/bdi.12400
更新日期:2016-06-01 00:00:00
abstract::Bipolar disorder is a complex condition that includes symptoms of mania, depression, and often anxiety. Diagnosing and treating bipolar depression is challenging, with the disorder often being diagnosed as unipolar depression. In addition, comorbid anxiety can be a significant detractor to successful outcomes, increas...
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pub_type: 杂志文章,评审
doi:10.1111/j.1399-2406.2003.00061.x
更新日期:2003-01-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1034/j.1399-5618.2003.00055.x
更新日期:2003-10-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章,评审
doi:10.1111/j.1399-5618.2009.00715.x
更新日期:2009-06-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1111/j.1399-5618.2007.00343.x
更新日期:2007-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:2019-12-01 00:00:00
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pub_type: 杂志文章
doi:10.1111/j.1399-5618.2007.00419.x
更新日期:2007-12-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/bdi.12247
更新日期:2014-12-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/j.1399-5618.2010.00855.x
更新日期:2010-09-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/j.1399-5618.2006.00281.x
更新日期:2006-04-01 00:00:00
abstract:BACKGROUND:Neurovascular abnormalities are relevant to the pathophysiology of bipolar disorder (BD), which can be assessed using cerebral blood flow (CBF) imaging. CBF alterations have been identified in BD, but studies to date have been small and inconclusive. We aimed to determine cortical gray matter CBF (GM-CBF) di...
journal_title:Bipolar disorders
pub_type: 杂志文章,评审
doi:10.1111/bdi.12966
更新日期:2020-06-24 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/j.1399-5618.2009.00669.x
更新日期:2009-03-01 00:00:00
abstract:OBJECTIVES:To examine the nature of executive deficits in euthymic patients with bipolar disorder (BD). METHODS:Fifteen euthymic BD patients and 13 controls were administered a battery of executive tasks including verbal fluency, Stroop, Theory of Mind (ToM) tests and selected subtests from the Cambridge Neuropsycholo...
journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/j.1399-5618.2005.00254.x
更新日期:2005-01-01 00:00:00
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journal_title:Bipolar disorders
pub_type: 杂志文章,评审
doi:10.1111/bdi.12091
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVES:To investigate the use of transcranial direct current stimulation (tDCS) for enhancing working memory and sustained attention in euthymic patients with bipolar disorder. METHODS:Fifteen patients with bipolar disorder received anodal left prefrontal tDCS with an extracephalic cathode (prefrontal condition), ...
journal_title:Bipolar disorders
pub_type: 杂志文章
doi:10.1111/bdi.12350
更新日期:2015-12-01 00:00:00