What question did this study set out to answer?

To review experimental findings on the dose-response relationships, time course, histopathology, and underlying pathogenetic mechanisms of radiation-induced heart disease.

January 1, 1992International Journal of Radiation Biology

Radiation-induced Heart Disease: Review of Experimental Data on Dose Reponse and Pathogenesis

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Population

Experimental animal models (dogs, rabbits, rats)

Design

Review

Authors

SSS. Schultz‐HectorElse Kröner-Fresenius-Stiftung

Discussion

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Implication

Supports radiotherapy dose constraints to limit pericarditis and myocardial injury; extends animal mechanistic data but leaves human translation open.

Key Points

To review experimental findings on the dose-response relationships, time course, histopathology, and underlying pathogenetic mechanisms of radiation-induced heart disease.
Analyzed experimental cardiac irradiation studies in dogs, rabbits, and multiple rat strains utilizing single doses ranging from ≥15 Gy to 20 Gy.
Evaluated histological outcomes, endothelial cell kinetics, alkaline phosphatase marker enzyme activity, and cardiac hemodynamics both in vivo and in isolated working heart preparations.
Single doses ≥15 Gy caused reversible exudative pericarditis at ~100 days across species, while 20 Gy induced myocardial degeneration at ~70 days preceded by capillary loss and endothelial degeneration.
Hemodynamic measurements after 20 Gy demonstrated a decline in cardiac output and left ventricular ejection fraction to ~64% of normal values, maintained in vivo via compensatory beta-adrenergic receptor upregulation.

Structured PICO

Population

Experimental animal models (dogs, rabbits, rats)

Intervention

Heart irradiation (e.g., single dose ≥ 15 Gy or 20 Gy)

Outcome

Development of radiation-induced heart disease (exudative pericarditis, myocardial degeneration, capillary density, cardiac function)surrogate

Radiation-induced heart disease is characterized by a chronic progressive time-course involving endothelial damage, capillary loss, and compensatory regulatory alterations leading to myocardial failure.

Cite This Study

S. Schultz‐Hector (1992) studied this question.

synapsesocial.com/papers/6a76ed292e130d02afec455d https://doi.org/10.1080/09553009214550761

Topics

Cardiomyopathy Pericardial disease

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Implication

Supports radiotherapy dose constraints to limit pericarditis and myocardial injury; extends animal mechanistic data but leaves human translation open.

Radiation-induced Heart Disease: Review of Experimental Data on Dose Reponse and Pathogenesis

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Radiation-induced Heart Disease: Review of Experimental Data on Dose Reponse and Pathogenesis

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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Topics

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