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Updated: Jun 9, 2025
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A Recovery Cardiopulmonary Bypass Model Without Transfusion or Inotropic Agents in Rats
Published on: March 23, 2018
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Rodent Model of Cardiopulmonary Bypass Demonstrates Systemic Inflammation and Neuromarker Changes
Aimee Zhang1, Nathan S Haywood1, Dustin T Money1
1Division of Thoracic and Cardiovascular Surgery, Department of Surgery, University of Virginia, Charlottesville, Virginia.
The Journal of Surgical Research
|October 29, 2024
Summary
This study validates a rat model of cardiopulmonary bypass (CPB) that shows systemic inflammation and brain changes, potentially leading to post-CPB delirium. Targeting this inflammation may prevent delirium after CPB surgery.
Area of Science:
- Cardiovascular Surgery
- Neuroscience
- Inflammation Research
Background:
- Cardiopulmonary bypass (CPB) can cause physiological stress, leading to complications like postoperative delirium.
- A validated rodent survival model is needed to study CPB-induced systemic inflammation and its link to delirium.
Purpose of the Study:
- To validate a rodent survival model of CPB that demonstrates a systemic inflammatory response.
- To investigate if this inflammatory response contributes to post-CPB delirium.
Main Methods:
- Adult Sprague-Dawley rats underwent sham surgery or 60-minute CPB.
- Physiological and biochemical markers were assessed, including serum cytokines and hippocampal gene/protein expression.
- Quantitative RT-PCR and Western blot analyzed hippocampal tissue.
Main Results:
- CPB increased serum proinflammatory chemokines and IL-10 compared to sham.
- Significant changes in hippocampal biomarkers (apolipoprotein 1, VEGF A, synapsin 1) were observed post-CPB.
- The model showed low surgical attrition with no transfusion or inotrope requirement.
Conclusions:
- A CPB rat survival model was validated, exhibiting systemic inflammation and altered brain biomarkers.
- CPB-induced inflammation may be a therapeutic target for preventing post-CPB delirium.
- This model allows for comprehensive evaluation of CPB effects and interventions.
