A Chronic Immobilization Stress Protocol for Inducing Depression-Like Behavior in Mice

Area of Science:

• Neuroscience
• Behavioral Science
• Animal Models

Background:

• Depression prevalence is increasing, yet research and treatments remain limited.
• Existing depression models, like chronic mild stress (CMS), are complex and require extensive procedures.
• There is a need for accessible and reliable animal models to study depression.

Purpose of the Study:

• To propose and validate a novel mouse model of depression induced by chronic immobilization stress (CIS).
• To establish an accessible method for inducing depressive-like behaviors and physiological changes in mice.
• To provide a valuable tool for depression research and therapeutic development.

Main Methods:

• Induction of chronic immobilization stress (CIS) by restricting mouse movement.
• Assessment of depressive-like behaviors using the sucrose preference test (SPT) and tail suspension test (TST).
• Measurement of stress marker corticosterone levels via ELISA assay.

Main Results:

• Chronic immobilization stress (CIS) successfully induced depressive-like behaviors in mice.
• Physiological stress markers, including corticosterone levels, were significantly altered.
• The combination of behavioral and physiological assessments validated the CIS model for depression.

Conclusions:

• Chronic immobilization stress (CIS) provides a readily accessible and effective mouse model for studying depression.
• This model facilitates the investigation of behavioral and physiological changes associated with depression.
• The validated CIS model can advance depression research and the development of novel therapeutic strategies.