Neural response to catecholamine depletion in remitted bulimia nervosa: Relation to depression and relapse.

Müller, Stefanie Verena; Mihov, Yoan; Federspiel, Andrea; Wiest, Roland; Hasler, Gregor (2017). Neural response to catecholamine depletion in remitted bulimia nervosa: Relation to depression and relapse. European neuropsychopharmacology, 27(7), pp. 633-646. Elsevier 10.1016/j.euroneuro.2017.04.002

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Bulimia nervosa has been associated with a dysregulated catecholamine system. Nevertheless, the influence of this dysregulation on bulimic symptoms, on neural activity, and on the course of the illness is not clear yet. An instructive paradigm for directly investigating the relationship between catecholaminergic functioning and bulimia nervosa has involved the behavioral and neural responses to experimental catecholamine depletion. The purpose of this study was to examine the neural substrate of catecholaminergic dysfunction in bulimia nervosa and its relationship to relapse. In a randomized, double-blind and crossover study design, catecholamine depletion was achieved by using the oral administration of alpha-methyl-paratyrosine (AMPT) over 24 h in 18 remitted bulimic (rBN) and 22 healthy (HC) female participants. Cerebral blood flow (CBF) was measured using a pseudo continuous arterial spin labeling (pCASL) sequence. In a follow-up telephone interview, bulimic relapse was assessed. Following AMPT, rBN participants revealed an increased vigor reduction and CBF decreases in the pallidum and posterior midcingulate cortex (pMCC) relative to HC participants showing no CBF changes in these regions. These results indicated that the pallidum and the pMCC are the functional neural correlates of the dysregulated catecholamine system in bulimia nervosa. Bulimic relapse was associated with increased depressive symptoms and CBF reduction in the hippocampus/parahippocampal gyrus following catecholamine depletion. AMPT-induced increased CBF in this region predicted staying in remission. These findings demonstrated the importance of depressive symptoms and the stress system in the course of bulimia nervosa.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > University Psychiatric Services > University Hospital of Psychiatry and Psychotherapy > Translational Research Center
04 Faculty of Medicine > Department of Radiology, Neuroradiology and Nuclear Medicine (DRNN) > Institute of Diagnostic and Interventional Neuroradiology

Graduate School:

Graduate School for Health Sciences (GHS)

UniBE Contributor:

Müller, Stefanie Verena; Mihov, Yoan; Federspiel, Andrea; Wiest, Roland and Hasler, Gregor

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0924-977X

Publisher:

Elsevier

Funders:

[4] Swiss National Science Foundation

Language:

English

Submitter:

Martin Zbinden

Date Deposited:

07 Aug 2017 09:43

Last Modified:

12 Dec 2017 14:52

Publisher DOI:

10.1016/j.euroneuro.2017.04.002

PubMed ID:

28502528

Uncontrolled Keywords:

Alpha-methyl-paratyrosine; Arterial spin labeling; Bulimia nervosa; Catecholamine depletion; Cerebral blood flow; Relapse

BORIS DOI:

10.7892/boris.100897

URI:

https://boris.unibe.ch/id/eprint/100897

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