4.6 Article

Correspondence between patterns of cerebral blood flow and structure in adolescents with and without bipolar disorder

期刊

JOURNAL OF CEREBRAL BLOOD FLOW AND METABOLISM
卷 41, 期 8, 页码 1988-1999

出版社

SAGE PUBLICATIONS INC
DOI: 10.1177/0271678X21989246

关键词

Adolescence; bipolar disorder; cerebral blood flow; MRI; structural covariance

资金

  1. Ontario Mental Health Foundation
  2. Brain and Behavior Foundation Independent Investigator award

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This study revealed that there is covariance between cerebral blood flow (CBF) and brain structure in adolescents, with differences observed in those with bipolar disorder compared to controls. The correspondence between CBF and structure was more pronounced in individuals with bipolar disorder.
Adolescence is a period of rapid development of the brain's inherent functional and structural networks; however, little is known about the region-to-region organization of adolescent cerebral blood flow (CBF) or its relationship to neuroanatomy. Here, we investigate both the regional covariation of CBF MRI and the covariation of structural MRI, in adolescents with and without bipolar disorder. Bipolar disorder is a disease with increased onset during adolescence, putative vascular underpinnings, and evidence of anomalous CBF and brain structure. In both groups, through hierarchical clustering, we found CBF covariance was principally described by clusters of regions circumscribed to the left hemisphere, right hemisphere, and the inferior brain; these clusters were spatially reminiscent of cerebral vascular territories. CBF covariance was associated with structural covariance in both the healthy group (n = 56; r = 0.20, p < 0.0001) and in the bipolar disorder group (n = 68; r = 0.36, p < 0.0001), and this CBF-structure correspondence was higher in bipolar disorder (p = 0.0028). There was lower CBF covariance in bipolar disorder compared to controls between the left angular gyrus and pre- and post-central gyri. Altogether, CBF covariance revealed distinct brain organization, had modest correspondence to structural covariance, and revealed evidence of differences in bipolar disorder.

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