The Effects of Anthracycline-based Chemotherapy on Peripheral Vascular Function

Plain-language summary

The overall goal of this project is to determine the effects of anti-cancer chemotherapy on reflex control of blood pressure and vascular function. Recent data have demonstrated that cardiovascular disease-related mortality is the 2nd cause of morbidity and mortality for 7-year cancer survivors treated with chemotherapy. This anti-cancer treatment-mediated cardiotoxicity is a progressive process that begins at the molecular level, progresses to myocardial injury and left ventricular dysfunction, cumulating as heart failure and cardiovascular disease-related mortality. In parallel to these cardiac-specific changes, chemotherapy has also been shown to increase the risk for vascular-related abnormalities. However, the impact of adjuvant treatments on the function and structure of the peripheral vascular system remains poorly understood. With normal aging, two of the most important vascular adaptations to arteries, which strongly contribute to the increased risk of vascular-related and general cardiovascular disease, are an increase in large artery stiffness and dysfunction of the vascular endothelium. Therefore, the overall goal of this project is to determine the effects of anthracycline-based chemotherapy on large and small artery function and structure. The central hypothesis is that this type of cancer therapy results in negative vascular consequences as determined by non-invasive evaluation of spontaneous blood pressure control, carotid artery stiffness, and vascular endothelium-dependent vasodilation. This observational study is designed to increase our understanding of the vascular changes that occur during and following anti-cancer chemotherapy and provide insight into new methods that will decrease cardiovascular disease risk in those treated for cancer.

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