Dylan E Kirsch1,2,3, Alex Preston1, Valeria Tretyak1,2,4, Vanessa Le1, Wade Weber1, Stephen M Strakowski1,2,3,4, Elizabeth T C Lippard1,2,3,4,5. 1. Department of Psychiatry and Behavioral Sciences, Dell Medical School, University of Texas, Austin, Texas, USA. 2. Waggoner Center for Alcohol & Addiction Research, University of Texas, Austin, Texas, USA. 3. Institute for Neuroscience, University of Texas, Austin, Texas, USA. 4. Department of Psychology, University of Texas, Austin, Texas, USA. 5. Institute of Early Life Adversity Research, University of Texas, Austin, Texas, USA.
Abstract
BACKGROUND: Stress-related mechanisms are implicated in the pathophysiology of bipolar disorder and may contribute to heterogeneity in illness course. Yet, there is a lack of study investigating the neural mechanisms underlying the stress response in this condition. This study investigated changes in amygdala activation and functional connectivity in response to acute psychosocial stress in young adults with bipolar disorder and explored relations with clinical phenotype and prospective mood symptoms. METHODS: 42 young adults [19 with bipolar disorder, agemean ± SD =21.4 ± 2.2 years] completed a modified version of the Montreal Imaging Stress Task. Amygdala activation and functional connectivity with prefrontal cortex (PFC) regions of interest was calculated for control and stress conditions. Main effects of group, condition, and group by condition interaction on amygdala activation and connectivity were modeled. A subset of bipolar participants completed 1-year follow-up assessments. Relations between neural responses to stress with concurrent substance use and prospective mood symptoms were explored. RESULTS: There were no between-group differences in amygdala activation or functional connectivity during the control condition. Increased right amygdala-right rostral PFC (rPFC) functional connectivity to stress was observed in bipolar disorder, compared to typically developing controls. In bipolar disorder, greater increase in right amygdala-right rPFC functional connectivity to stress was associated with less frequent cannabis use, and prospectively with shorter duration and lower severity of depression symptoms over follow-up. CONCLUSION: Results from this preliminary study suggest differences in frontolimbic functional connectivity responses to stress in young adults with bipolar disorder and associations with cannabis use and prospective mood symptoms.
BACKGROUND: Stress-related mechanisms are implicated in the pathophysiology of bipolar disorder and may contribute to heterogeneity in illness course. Yet, there is a lack of study investigating the neural mechanisms underlying the stress response in this condition. This study investigated changes in amygdala activation and functional connectivity in response to acute psychosocial stress in young adults with bipolar disorder and explored relations with clinical phenotype and prospective mood symptoms. METHODS: 42 young adults [19 with bipolar disorder, agemean ± SD =21.4 ± 2.2 years] completed a modified version of the Montreal Imaging Stress Task. Amygdala activation and functional connectivity with prefrontal cortex (PFC) regions of interest was calculated for control and stress conditions. Main effects of group, condition, and group by condition interaction on amygdala activation and connectivity were modeled. A subset of bipolar participants completed 1-year follow-up assessments. Relations between neural responses to stress with concurrent substance use and prospective mood symptoms were explored. RESULTS: There were no between-group differences in amygdala activation or functional connectivity during the control condition. Increased right amygdala-right rostral PFC (rPFC) functional connectivity to stress was observed in bipolar disorder, compared to typically developing controls. In bipolar disorder, greater increase in right amygdala-right rPFC functional connectivity to stress was associated with less frequent cannabis use, and prospectively with shorter duration and lower severity of depression symptoms over follow-up. CONCLUSION: Results from this preliminary study suggest differences in frontolimbic functional connectivity responses to stress in young adults with bipolar disorder and associations with cannabis use and prospective mood symptoms.
Authors: H P Blumberg; E Stern; S Ricketts; D Martinez; J de Asis; T White; J Epstein; N Isenberg; P A McBride; I Kemperman; S Emmerich; V Dhawan; D Eidelberg; J H Kocsis; D A Silbersweig Journal: Am J Psychiatry Date: 1999-12 Impact factor: 18.112
Authors: Jane B Allendorfer; Heidi Heyse; Lucy Mendoza; Erik B Nelson; James C Eliassen; Judd M Storrs; Jerzy P Szaflarski Journal: Epilepsy Behav Date: 2014-06-02 Impact factor: 2.937
Authors: Judah Weathers; Elizabeth T C Lippard; Linda Spencer; Brian Pittman; Fei Wang; Hilary P Blumberg Journal: J Am Acad Child Adolesc Psychiatry Date: 2017-11-26 Impact factor: 8.829
Authors: Vanessa Le; Dylan E Kirsch; Valeria Tretyak; Wade Weber; Stephen M Strakowski; Elizabeth T C Lippard Journal: Front Psychiatry Date: 2021-11-15 Impact factor: 4.157