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Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early...
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Regular exercise and meditation serve as essential tools in managing stress and promoting physical and mental well-being.
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The advent of drug therapy has profoundly shaped modern mental health care, providing targeted treatments for a range of psychological disorders. Psychotherapeutic drugs, classified into antianxiety, antidepressant, and antipsychotic medications, address symptoms across anxiety disorders, mood disorders, and schizophrenia. While these medications have transformed patient outcomes, they require careful management due to their potential side effects and limitations.
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Atypical antidepressants, including bupropion (Wellbutrin), mirtazapine (Remeron), nefazodone (Serzone), trazodone (Desyrel), and vilazodone (Viibryd), offer unique mechanisms of action. Bupropion weakly inhibits dopamine and norepinephrine reuptake, aiding depression treatment and smoking cessation, with a low risk of sexual dysfunction. Mirtazapine enhances serotonin and norepinephrine neurotransmission, leading to sedation, increased appetite, and weight gain. As a result, it helps treat...
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Antipsychotic drugs are a crucial treatment method for acute and chronic psychoses, bipolar illness, and behavioral disorders. The selection of these drugs depends on several factors, including the state of the disease, clinical judgment, possible drug interactions, and the patient's sensitivity to adverse effects. In immediate scenarios, such as delirium and dementia, short-term treatment with low doses of high-potency typical or atypical agents can effectively manage symptom exacerbation.
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Related Experiment Video

Updated: Aug 27, 2025

A Chronic Immobilization Stress Protocol for Inducing Depression-Like Behavior in Mice
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Stress with ketamine tackles depression.

Leslie K Ferrarelli1

  • 1Science Signaling, AAAS, Washington, DC 20005, USA.

Science Signaling
|September 27, 2022
PubMed
Summary

Ketamine rapidly reduces depression by activating a stress hormone pathway. This finding reveals a key mechanism behind ketamine

Area of Science:

  • Neuroscience
  • Endocrinology
  • Pharmacology

Background:

  • Ketamine is a rapid-acting antidepressant.
  • The precise mechanisms underlying ketamine's antidepressant effects remain incompletely understood.
  • Stress hormones, like cortisol, are implicated in mood disorders.

Purpose of the Study:

  • To elucidate the role of stress hormones in mediating ketamine's antidepressant action.
  • To investigate the molecular pathways linking ketamine administration to behavioral antidepressant outcomes.

Main Methods:

  • Utilized rodent models of depression.
  • Administered ketamine and monitored stress hormone levels.
  • Assessed behavioral despair and anxiety-related behaviors.
  • Examined downstream signaling pathways in relevant brain regions.

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Related Experiment Videos

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Main Results:

  • Ketamine administration led to a rapid increase in circulating stress hormone levels.
  • Blocking the stress hormone pathway abolished ketamine's antidepressant effects.
  • Activation of specific stress hormone receptors was correlated with behavioral improvements.

Conclusions:

  • Stress hormones are essential mediators of ketamine's antidepressant effects.
  • Targeting the stress hormone system may offer novel therapeutic strategies for depression.
  • This study uncovers a critical neuroendocrine mechanism driving rapid antidepressant responses.