Preclinical atherosclerosis covaries with individual differences in reactivity and functional connectivity of the amygdala.

Published

Journal Article

Cardiovascular disease (CVD) is a major source of medical comorbidity for patients with mood and anxiety disorders, and it remains the leading public health burden for the general population in industrialized nations. Indirect neurobiological evidence suggests that preclinical risk for atherosclerosis, the main contributor to CVD, may be conferred by interindividual variation in the functionality of the amygdala, a brain system jointly involved in processing behaviorally salient stimuli and regulating the cardiovascular system.In a neuroimaging study of 36 middle-aged adults (18 women) who were screened for confounding clinical cardiovascular and psychiatric disorders, we examined the direct covariation between a marker of preclinical atherosclerosis, carotid artery intima-media thickness (IMT), and interindividual variation in amygdala reactivity and functional connectivity assessed during the processing of behaviorally salient stimuli (angry and fearful facial expressions).After accounting for traditional CVD risk factors, a thickening of carotid IMT across individuals covaried with greater amygdala reactivity and a more positive functional connectivity between the amygdala and perigenual anterior cingulate cortex, a corticolimbic area also implicated in behavioral salience processing and cardiovascular regulation.Individual differences in amygdala reactivity and functional connectivity may reflect facets of a novel, systems-level neural phenotype conferring risk for atherosclerosis and CVD.

Full Text

Duke Authors

Cited Authors

  • Gianaros, PJ; Hariri, AR; Sheu, LK; Muldoon, MF; Sutton-Tyrrell, K; Manuck, SB

Published Date

  • June 2009

Published In

Volume / Issue

  • 65 / 11

Start / End Page

  • 943 - 950

PubMed ID

  • 19013557

Pubmed Central ID

  • 19013557

Electronic International Standard Serial Number (EISSN)

  • 1873-2402

International Standard Serial Number (ISSN)

  • 0006-3223

Digital Object Identifier (DOI)

  • 10.1016/j.biopsych.2008.10.007

Language

  • eng