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Related Concept Videos

Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Epigenetic Regulation01:37

Epigenetic Regulation

Epigenetic changes alter the physical structure of the DNA without changing the genetic sequence and often regulate whether genes are turned on or off. This regulation ensures that each cell produces only proteins necessary for its function. For example, proteins that promote bone growth are not produced in muscle cells. Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
X-chromosome...
Epigenetic Regulation01:46

Epigenetic Regulation

Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
Depressive Disorders: Etiology01:27

Depressive Disorders: Etiology

Depressive disorders result from a complex interplay of biological, psychological, and sociocultural factors, each contributing uniquely to the development and persistence of the condition. Understanding these factors provides critical insight into the multifaceted nature of depression.
Biological Factors in Depression
Biological predispositions significantly influence the risk of developing depressive disorders. Genetic studies highlight the role of variations in the serotonin transporter...
Depression: Overview01:18

Depression: Overview

Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...
Human Genetics01:28

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...

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Related Experiment Video

Updated: May 18, 2026

The Forced Swim Test as a Model of Depressive-like Behavior
05:42

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Published on: March 2, 2015

[Epigenetic regulation in depression].

Koji Otsuki1, Shusaku Uchida, Teruyuki Hobara

  • 1Department of Neuropsychiatry, Yamaguchi University Graduate School of Medicine, 1-1-1, Minamikogushi, Ube, 755-8505 Japan. otsuki@yamaguchi-u.ac.jp

Nihon Shinkei Seishin Yakurigaku Zasshi = Japanese Journal of Psychopharmacology
|September 28, 2012
PubMed
Summary
This summary is machine-generated.

Epigenetic regulation of glial cell-derived neurotrophic factor (GDNF) impacts depression susceptibility. Antidepressants modulate histone acetylation via HDAC4, offering therapeutic potential for mood disorders.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Psychiatry

Context:

  • Epigenetic mechanisms, like DNA methylation and histone modifications, influence gene expression and brain function.
  • The role of epigenetics in depression pathogenesis, particularly concerning environmental and genetic factors, remains largely unexplored.
  • Two mouse strains, BALB/c and C57BL/6, exhibit differential behavioral responses to chronic stress, correlating with GDNF expression in the ventral striatum.

Purpose:

  • To investigate the epigenetic regulation of the GDNF gene in the ventral striatum and its modulation of stress vulnerability.
  • To examine the impact of chronic antidepressant treatment on the epigenetic status of the GDNF gene.
  • To analyze the expression of GDNF and related epigenetic molecules in patients with major depressive and bipolar disorder.

Summary:

  • Chronic stress induced depressive-like behaviors in BALB/c mice, accompanied by decreased ventral striatal GDNF expression, while C57BL/6 mice showed resilience.
  • Epigenetic analysis revealed differential histone H3 acetylation and recruitment of HDAC2-MeCP2 complex in BALB/c mice, suggesting a role in stress susceptibility.
  • Antidepressant treatment reduced HDAC4 recruitment at the GDNF promoter, increasing GDNF expression and improving depressive-like behaviors, indicating a mechanism for therapeutic intervention.
  • Aberrant expression of GDNF, HDAC2, and HDAC4 was observed in mood disorder patients, highlighting the involvement of these epigenetic factors in depression pathophysiology.

Impact:

  • This study elucidates the critical role of epigenetic modifications, specifically histone acetylation regulated by HDAC2 and HDAC4, in controlling GDNF expression and influencing susceptibility to stress and depression.
  • Findings suggest that targeting epigenetic mechanisms of GDNF offers a novel therapeutic strategy for depression and related mood disorders.
  • The research provides a molecular link between environmental stress, epigenetic dysregulation of GDNF, and the pathophysiology of depression.