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Related Experiment Video

Updated: Feb 4, 2026

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Summary
This summary is machine-generated.

The single prolonged stress (SPS) model did not produce reliable behavioral or physiological changes in rats, indicating it may not be a robust preclinical model for posttraumatic stress disorder (PTSD) research.

Keywords:
HPA axisanxiety-like behaviorcorticosteroneratsingle prolonged stress modelsocial behavior

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Area of Science:

  • Neuroscience
  • Behavioral Science
  • Endocrinology

Background:

  • Preclinical models are crucial for understanding posttraumatic stress disorder (PTSD) and developing treatments.
  • The single prolonged stress (SPS) model is a rodent model used to study stress responses.
  • Reliable and robust preclinical models are needed for PTSD research.

Purpose of the Study:

  • To evaluate the efficacy of the SPS model in inducing anxiety-like and social behavioral changes.
  • To assess corticosterone levels as a physiological biomarker in the SPS model.
  • To determine if the SPS model produces robust and intervenable phenotypes for PTSD research.

Main Methods:

  • Sprague Dawley rats underwent SPS induction or control handling.
  • Behavioral tests included the open field test (OFT) and social motivation test (SMT).
  • Serum corticosterone levels were measured at 1 and 2 weeks post-SPS.

Main Results:

  • The SPS model did not induce significant anxiety-like or locomotive differences in the OFT.
  • Social preference and avoidance were not altered by SPS in the SMT.
  • Serum corticosterone levels remained unchanged between SPS and control groups.

Conclusions:

  • The tested SPS protocol did not reliably produce robust behavioral or physiological phenotypes.
  • This SPS model may not be suitable for studying PTSD without modifications.
  • Further research is needed to refine preclinical models for PTSD.