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Related Concept Videos

Stress Prevention and Stress Management Techniques II01:23

Stress Prevention and Stress Management Techniques II

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Personality types, particularly Type A and Type B, significantly influence how individuals respond to stress. These personality distinctions are marked by varying levels of ambition, competitiveness, and coping styles, all of which shape an individual's resilience to stressors.
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The gut–brain axis is a bidirectional communication system that connects the gastrointestinal tract and the brain. This interaction is mediated through multiple pathways, including the vagus nerve, hormonal signals, immune responses, and chemical messengers produced by gut microbes.Microbial Contributions to Brain FunctionGut microbiota contributes significantly to brain function by producing neuroactive compounds. These include neuroactive compounds that influence neurotransmitters such...
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Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
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G protein-coupled receptor (GPCR) signaling plays a crucial role in cell functioning. GPCR desensitization is an equally essential process. It allows cells to respond to changing environments and regain sensitivity to new stimuli while preventing unnecessary stimulation when no longer needed. Prolonged exposure to stimuli leads to GPCR desensitization. It involves blocking the receptors from binding and activating additional G proteins. This inhibits activation of downstream effectors, thereby...
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Related Experiment Video

Updated: Apr 23, 2026

BS3 Chemical Crosslinking Assay: Evaluating the Effect of Chronic Stress on Cell Surface GABAA Receptor Presentation in the Rodent Brain
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GABAB(1) receptor subunit isoforms differentially regulate stress resilience.

Olivia F O'Leary1, Daniela Felice2, Stefano Galimberti3

  • 1Departments of Anatomy and Neuroscience and Alimentary Pharmabiotic Centre, and o.oleary@ucc.ie j.cryan@ucc.ie.

Proceedings of the National Academy of Sciences of the United States of America
|October 8, 2014
PubMed
Summary
This summary is machine-generated.

Mice lacking the GABAB(1b) receptor subunit show increased resilience to stress, while those lacking GABAB(1a) are more susceptible. This suggests GABAB(1) receptor isoforms differentially regulate stress effects, offering therapeutic potential for depression.

Keywords:
antidepressantanxietydepressionneurogenesis

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Area of Science:

  • Neurobiology
  • Psychiatry
  • Receptor pharmacology

Background:

  • Stressful life events can precipitate psychiatric disorders like depression.
  • Individual resilience to stress varies, highlighting the need to understand its neurobiological underpinnings.
  • GABAB receptors are potential therapeutic targets for stress-related disorders, including depression.

Purpose of the Study:

  • To investigate the differential roles of GABAB(1a) and GABAB(1b) receptor isoforms in stress resilience and susceptibility.
  • To explore the neurobiological mechanisms associated with stress resilience.
  • To assess the therapeutic potential of targeting GABAB(1) receptor isoforms for depression.

Main Methods:

  • Utilized knockout mouse models lacking GABAB(1a) or GABAB(1b) receptor isoforms.
  • Assessed behavioral responses to early-life and chronic psychosocial stress.
  • Examined hippocampal neurogenesis and neuronal activation (c-Fos) in response to stress.
  • Correlated hippocampal GABAB(1b) expression with depression-like phenotypes in a genetic mouse model.

Main Results:

  • Mice lacking GABAB(1b) receptors exhibited enhanced resilience to both early-life and adult chronic stress.
  • Mice lacking GABAB(1a) receptors showed increased susceptibility to stress-induced anhedonia and social avoidance.
  • Increased hippocampal GABAB(1b) expression was linked to a depression-like phenotype.
  • Stress resilience in GABAB(1b)(-/-) mice correlated with increased hippocampal neurogenesis and c-Fos activation.

Conclusions:

  • GABAB(1) receptor subunit isoforms play distinct, opposing roles in modulating the effects of stress.
  • Targeting specific GABAB(1) isoforms may offer a novel therapeutic strategy for depression and other stress-related disorders.