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Related Concept Videos

Stress and Mental Health01:30

Stress and Mental Health

234
Chronic stress profoundly affects mental health, significantly influencing mood, behavior, and overall quality of life. Research closely links chronic stress with mental health conditions such as depression, anxiety, and substance use disorders. Ongoing exposure to stress can lead to physiological and psychological changes, initiating a cycle of emotional distress and maladaptive coping mechanisms.
Individuals with depression often experience challenges in both their personal and professional...
234
Depression: Overview01:18

Depression: Overview

406
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,...
406
Depressive Disorders: Etiology01:27

Depressive Disorders: Etiology

178
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...
178

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Related Experiment Video

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A Chronic Immobilization Stress Protocol for Inducing Depression-Like Behavior in Mice
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Stress induced microglial activation contributes to depression.

Bingjin Li1, Wei Yang1, Tongtong Ge1

  • 1Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, Second Hospital of Jilin University, Changchun 130041, China.

Pharmacological Research
|February 27, 2022
PubMed
Summary

Major depressive disorder (MDD) involves neuroinflammation and altered microglial activity. Stress impacts microglia, potentially contributing to depression pathogenesis and offering new therapeutic targets.

Keywords:
CytokineDepressionInflammationMDDMicrogliaMicroglial activationNeurogenesisSynaptic plasticity

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Area of Science:

  • Neuroscience
  • Immunology
  • Psychiatry

Background:

  • Major depressive disorder (MDD) presents a significant global health and economic challenge.
  • Neuroinflammation and abnormal microglial function are increasingly linked to depressive symptoms.

Purpose of the Study:

  • To review mechanisms by which stress disrupts microglial homeostasis.
  • To explore the role of microglia in the pathogenesis of depression.

Main Methods:

  • Analysis of clinical and preclinical studies.
  • Examination of stress-induced triggering factors on microglia.
  • Review of neuroendocrine, noradrenergic, and gut-brain axis influences.

Main Results:

  • Stressors can dysregulate microglia through various pathways, including inflammatory milieu.
  • Altered microglia impact neuronal activity via cytokine secretion and metabolite release.
  • These microglial changes contribute to stress-related pathological outcomes.

Conclusions:

  • Microglial dysfunction is implicated in the etiology of depression.
  • Targeting microglial pathways offers potential for novel therapeutic strategies against MDD.