Key result
Heart-base irradiation causes no significant arrhythmogenesis or myocardial fibrosis at 3 months in mice.
Why the study?
Radiation-induced heart disease is a potential cause of morbidity and mortality in dogs undergoing thoracic irradiation, but the effects of stereotactic-like radiation on arrhythmogenesis and cardiac damage in a mouse model are not well characterized.
Does heart-base irradiation induce arrhythmogenesis and cardiac damage in a mouse model?
Does heart-base irradiation induce arrhythmogenesis and cardiac damage in a mouse model?
A pilot study of heart-base irradiation in mice showed no significant arrhythmogenesis or cardiac damage at 3 months, indicating that experimental modifications are needed to accurately model radiation-induced heart disease.
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Establishes mouse model feasibility for RIHD; leaves open optimal prescriptions and arrhythmogenesis translation to dogs.
Elliott et al. (2020) studied Radiation-induced heart disease (n=6). Heart-base irradiation was evaluated on Arrhythmogenesis and cardiac histology. Heart-base irradiation (12 Gy × 3) in female mice did not induce significant arrhythmogenesis, myocardial necrosis, atrophy, or fibrosis over 3 months.
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