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Related Concept Videos

Stress and Mental Health01:30

Stress and Mental Health

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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.
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Depressive disorders are a group of mental health conditions characterized by pervasive feelings of sadness, diminished pleasure in life, and a significant impact on daily functioning. These conditions are most prevalent in individuals during their 30s and affect women at twice the rate of men. Contrary to popular belief, younger individuals are generally more susceptible to these disorders than older adults. Two key types of depressive disorders include Major Depressive Disorder (MDD) and...
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Long-term Depression01:05

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Long-term Depression01:03

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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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An Unpredictable Chronic Mild Stress Protocol for Instigating Depressive Symptoms, Behavioral Changes and Negative Health Outcomes in Rodents
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Evidence for Inflammation-Associated Depression.

Celina S Liu1,2, Alexander Adibfar1,2, Nathan Herrmann2,3

  • 1Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada.

Current Topics in Behavioral Neurosciences
|May 26, 2016
PubMed
Summary
This summary is machine-generated.

Inflammation is linked to depression, with pro-inflammatory cytokines like IL-6 driving symptoms. Anti-inflammatory treatments may reduce both inflammation and depression, suggesting a distinct inflammatory subtype of depression.

Keywords:
Cell-mediated immune activationCytokinesInflammationMajor depressive disorderMitochondrial dysfunctionOxidative and nitrosative stressPlatelet activating factors

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Immunology

Background:

  • Depression is a complex disorder with multifactorial etiopathology.
  • Emerging evidence suggests a significant role for inflammation in the development and maintenance of depressive symptoms.

Purpose of the Study:

  • To explore the evidence linking inflammation and depression.
  • To investigate the potential of inflammation-targeted therapies for a distinct subtype of depression.

Main Methods:

  • Review of preclinical and clinical studies examining pro-inflammatory cytokines (IL-1β, IL-6, TNF-α) and depressive symptoms.
  • Analysis of aberrant inflammation-related processes (oxidative stress, mitochondrial damage).
  • Evaluation of outcomes from pharmacological anti-inflammatory interventions.

Main Results:

  • A bidirectional relationship exists between inflammation and depression.
  • Elevated pro-inflammatory cytokine concentrations correlate with depressive symptoms.
  • Anti-inflammatory treatments show potential in reducing both inflammation and depression.

Conclusions:

  • Inflammation-associated depression may represent a distinct subtype with unique features.
  • Patients with this subtype may benefit from inflammation-targeted pharmacotherapy.
  • Further research is warranted to elucidate these mechanisms and therapeutic strategies.