ArticleBipolar disorders2026
Cortical Thickness in Middle and Older Aged Adults With Bipolar Disorder Across Six International Sites.
Article in Bipolar disorders, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundOlder adults with bipolar disorder (BD) are at high risk for severe mood symptoms, cognitive difficulties, and early mortality; however, underlying brain alterations have received little study. Gray matter decreases in ventral prefrontal cortex (VPFC) seen in younger persons with BD, and additionally in dorsal PFC (DPFC), are implicated. Here, cortical thickness was examined in an international sample.
methodsCortical thickness in 34 regions was measured from structural magnetic resonance imaging data using enhancing neuroImaging genetics through meta-analysis pipelines for individuals with BD (n = 308) and non-psychiatric comparison participants (n = 287), ages 40-70y, from six Global Aging and Geriatric Experiments in BD (GAGE-BD) consortium sites. Group differences were assessed for VPFC, DPFC and remaining cortical regions, covarying for scanner, age and sex. Results were considered significant corrected for false discovery fate (FDR) at p
resultsCortical thickness was significantly lower among BD in VPFC and DPFC, and additional distributed regions (p
conclusionsIn this international middle and older aged adult BD sample, lower VPFC cortical thickness was observed, suggesting these deficits persist from younger age. DPFC and additional regions of reduced cortical thickness could contribute to the older adult BD phenotype. Cortical thinning was more pronounced among older individuals regardless of diagnosis. Lithium may lessen cortical thinning.
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