Related Experiment Video
Updated: May 12, 2026
10:38
Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters
Published on: September 27, 2012
How might circadian rhythms control mood? Let me count the ways
1Department of Psychiatry and Translational Neuroscience Program, University of Pittsburgh School of Medicine, Pittsburgh, PA 15219, USA. mcclungca@upmc.edu
Biological Psychiatry
|April 6, 2013
Summary
Mood disorders are linked to disruptions in circadian rhythms and sleep patterns. This review highlights the critical role of the body
Area of Science:
- Neuroscience
- Chronobiology
- Psychiatry
Background:
- Mood disorders, including depression and bipolar disorder, affect a significant portion of the population.
- Existing hypotheses for mood disorders involve disruptions in monoamine transmission, HPA axis, immune function, neurogenesis, mitochondrial dysfunction, and neuropeptide signaling.
- Altered circadian rhythms and sleep/wake cycles are consistently observed in individuals with mood disorders and are diagnostic criteria.
Purpose of the Study:
- To review recent scientific data implicating the circadian system in the development of mood disorders.
- To explore the role of molecular clocks in regulating physiological processes relevant to mood regulation.
Main Methods:
- Literature review of recent studies on circadian rhythms and mood disorders.
- Synthesis of data connecting molecular clock function to mood regulation pathways.
Main Results:
- Circadian rhythm disruptions, including those from environmental factors like shift work and travel, can trigger or worsen mood episodes.
- Molecular clocks are present throughout the body and brain, regulating key physiological functions.
- Emerging evidence strongly links the circadian system to the pathophysiology of mood disorders.
Conclusions:
- The circadian system is a vital regulator of systems implicated in mood disorder development.
- Understanding the interplay between circadian rhythms and mood regulation offers new therapeutic avenues.
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