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A Doxorubicin-Induced Murine Model of Dilated Cardiomyopathy In Vivo
Published on: May 16, 2020
Prediction of Anthracycline-induced Cardiotoxicity Using Cardiac MRI Parameters: An Animal Study
Na Young Kim1, Jinho Park2, Heae Surng Park3
1Department of Radiology, Research Institute of Radiological Science, Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea.
Radiology. Cardiothoracic Imaging
|May 7, 2026
Summary
Cardiac MRI parameters, native T1 and extracellular volume fraction (ECV), effectively predict early mortality in a preclinical model of anthracycline-induced cardiotoxicity. These findings highlight their prognostic utility in experimental heart disease research.
Area of Science:
- Cardiovascular Imaging
- Experimental Pathology
- Biomedical Engineering
Background:
- Anthracyclines are potent chemotherapy agents with known cardiotoxic effects.
- Early detection of cardiotoxicity is crucial for patient management and therapeutic intervention.
- Preclinical models are vital for understanding disease mechanisms and evaluating diagnostic tools.
Purpose of the Study:
- To assess the predictive value of cardiac magnetic resonance (CMR) imaging parameters, specifically native T1 and extracellular volume fraction (ECV), for early mortality.
- To investigate these parameters in a rat model of doxorubicin-induced cardiotoxicity.
Main Methods:
- Thirty-one rats received doxorubicin for up to 12 weeks, with follow-up until natural death.
- Cardiac MRI with parametric mapping was performed.
- Cox regression analysis was used to correlate MRI variables with early mortality.
Main Results:
- Seventeen rats (55%) experienced early death.
- Native T1 and ECV values were significantly elevated in rats that died early compared to survivors at week 6.
- Both native T1 (HR 1.01) and ECV (HR 1.17) were significant predictors of early mortality.
Conclusions:
- Native T1 and ECV are valuable prognostic biomarkers for predicting early mortality in anthracycline-induced cardiotoxicity.
- Cardiac MRI parametric mapping offers a non-invasive method for assessing cardiotoxicity risk.
- These findings support the use of native T1 and ECV in preclinical studies of heart disease.
