Understanding and Addressing Disparities in Cancer Therapy Induced Inflammation and Associated Endothelial Dysfunction

Study Summary

Very little is understood about the off-target vascular mechanisms of anti-cancer drug toxicity and the impact of exercise on these changes. Much of what has been learned about molecular pathways regulating vascular endothelial function has been established by logical expansion of knowledge obtained through experimental studies (e.g., discovery of endothelium-derived relaxing factor/nitric oxide). Within the last 10 years technological advancements of -omics approaches, such as RNA-sequencing and shotgun proteomics, have dramatically reduced the cost and technical challenge of accessing these tools for discovery-based research. Investigators are now able to obtain unbiased datasets showing changes in transcript or protein expression within complex samples. With cost and accessibility of sequencing is no longer being substantial bottleneck, one of major challenges researchers now face is determining how to meaningfully interpret profiles from large datasets. The extensive characterization of molecular pathways impacting inflammatory responses, endothelial function and angiogenesis, the pathway and network analysis tools will be an asset for identification molecular pathways relevant to alterations in microvascular endothelial function. The investigators preliminary studies on only a small number of samples highlights this potential of the proposed approach to lead to identify personalized medicine-based profiles that will predict patients are likely to develop microvascular endothelial dysfunction from CTx.

Primary Outcome

Investigators will use a graded protocol, starting at 50 watts followed by 30 watt increments every 2 minutes. Subjects will be connected to a breath-by-breath metabolic system (Cosmed, Italy) for measurement of VO2peak. A maximal effort will be defined as fulfillment of three of the following criteria: 1) A plateau in VO2 with an increase in work rate defined as an increase in VO2 of less than 50 ml/min; 2) A maximal HR within 10 beats of predicted maximal heart rate; 3) A respiratory exchange

Conditions Studied

Interventions

• BEHAVIORAL Taking Charge during Treatment (TCT) Intervention

Study Locations (2)