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Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
Published on: February 17, 2018
Adriamycin-associated cardiomyopathy: where are we now? updates in pathophysiology, dose recommendations, prognosis,
1Department of Cardiovascular Disease, Mayo Clinic, Phoenix, Arizona, USA.
Purpose Of Review:
Advances in cancer treatments have resulted in significant improvements in survival. Anthracycline chemotherapeutics play a major role in the treatment of hematologic malignancies and solid tumors; however, there is a risk of anthracycline cardiomyopathy in survivors. This focused review will provide a historical context on anthracycline cardiomyopathy and will also review pathophysiologic mechanisms of cardiotoxicity, dosage recommendations, prognosis, and outcomes.
Recent Findings:
Anthracycline inhibition of topoisomerase 2β in cardiomyocytes is believed to be the dominant mechanism of anthracycline-related cardiotoxicity. Emerging data suggest that downregulation of the RNA-binding protein quaking 5 may also be contributing. There is continued lack of agreement regarding what dosage of anthracycline is associated with the highest risk of cardiotoxicity.
Summary:
Ongoing research into the mechanisms of anthracycline cardiotoxicity is warranted to allow for the development of targeted preventive therapies. A consensus definition of anthracycline cardiomyopathy will facilitate analyses of existing data and allow for the conduction of prospective clinical trials in this area.
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