Circadian Rhythm Disturbances in Mood Disorders: Insights into the Role of the Suprachiasmatic Nucleus

Circadian rhythm disturbances are a common symptom among individuals with mood disorders. The suprachiasmatic nucleus (SCN), in the ventral part of the anterior hypothalamus, orchestrates physiological and behavioral circadian rhythms. The SCN consists of self-sustaining oscillators and receives pho...

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Main Authors: Chelsea A. Vadnie, Colleen A. McClung
Format: Article
Language:English
Published: Wiley 2017-01-01
Series:Neural Plasticity
Online Access:http://dx.doi.org/10.1155/2017/1504507
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author Chelsea A. Vadnie
Colleen A. McClung
author_facet Chelsea A. Vadnie
Colleen A. McClung
author_sort Chelsea A. Vadnie
collection DOAJ
description Circadian rhythm disturbances are a common symptom among individuals with mood disorders. The suprachiasmatic nucleus (SCN), in the ventral part of the anterior hypothalamus, orchestrates physiological and behavioral circadian rhythms. The SCN consists of self-sustaining oscillators and receives photic and nonphotic cues, which entrain the SCN to the external environment. In turn, through synaptic and hormonal mechanisms, the SCN can drive and synchronize circadian rhythms in extra-SCN brain regions and peripheral tissues. Thus, genetic or environmental perturbations of SCN rhythms could disrupt brain regions more closely related to mood regulation and cause mood disturbances. Here, we review clinical and preclinical studies that provide evidence both for and against a causal role for the SCN in mood disorders.
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spelling doaj-art-b2cb33b79c3c43b788854537537b1d3e2025-02-03T01:30:55ZengWileyNeural Plasticity2090-59041687-54432017-01-01201710.1155/2017/15045071504507Circadian Rhythm Disturbances in Mood Disorders: Insights into the Role of the Suprachiasmatic NucleusChelsea A. Vadnie0Colleen A. McClung1Department of Psychiatry, University of Pittsburgh Medical School, Pittsburgh, PA, USADepartment of Psychiatry, University of Pittsburgh Medical School, Pittsburgh, PA, USACircadian rhythm disturbances are a common symptom among individuals with mood disorders. The suprachiasmatic nucleus (SCN), in the ventral part of the anterior hypothalamus, orchestrates physiological and behavioral circadian rhythms. The SCN consists of self-sustaining oscillators and receives photic and nonphotic cues, which entrain the SCN to the external environment. In turn, through synaptic and hormonal mechanisms, the SCN can drive and synchronize circadian rhythms in extra-SCN brain regions and peripheral tissues. Thus, genetic or environmental perturbations of SCN rhythms could disrupt brain regions more closely related to mood regulation and cause mood disturbances. Here, we review clinical and preclinical studies that provide evidence both for and against a causal role for the SCN in mood disorders.http://dx.doi.org/10.1155/2017/1504507
spellingShingle Chelsea A. Vadnie
Colleen A. McClung
Circadian Rhythm Disturbances in Mood Disorders: Insights into the Role of the Suprachiasmatic Nucleus
Neural Plasticity
title Circadian Rhythm Disturbances in Mood Disorders: Insights into the Role of the Suprachiasmatic Nucleus
title_full Circadian Rhythm Disturbances in Mood Disorders: Insights into the Role of the Suprachiasmatic Nucleus
title_fullStr Circadian Rhythm Disturbances in Mood Disorders: Insights into the Role of the Suprachiasmatic Nucleus
title_full_unstemmed Circadian Rhythm Disturbances in Mood Disorders: Insights into the Role of the Suprachiasmatic Nucleus
title_short Circadian Rhythm Disturbances in Mood Disorders: Insights into the Role of the Suprachiasmatic Nucleus
title_sort circadian rhythm disturbances in mood disorders insights into the role of the suprachiasmatic nucleus
url http://dx.doi.org/10.1155/2017/1504507
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