This study plans to learn more about contributors to high blood pressure in men who undergo androgen deprivation therapy (ADT) to treat prostate cancer. Prostate cancer is the most common non-skin cancer in men, affecting approximately 1 in 8 American men and its primary treatment is through the use of ADT. However, ADT increases the likelihood of developing heart disease including high blood pressure. This study will determine if dysfunction of the nervous system and/or kidneys occurs in men undergoing ADT, as these systems play a significant role in control of blood pressure. The results from this study will help us understand the ways in which ADT contributes to heart disease and help us develop therapies to prevent heart disease in prostate cancer survivors.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
TRIPLE
Enrollment
10
UCHealth University of Colorado Hospital
Aurora, Colorado, United States
Change in Cardiovagal Baroreflex Sensitivity
The change in cardiovagal baroreflex sensitivity will be assessed via the sequence method
Time frame: Before and after 9 weeks of androgen deprivation therapy or placebo
Change in Blood Pressure Reactivity to the Cold Pressor Test
The change in systolic blood pressure will be assessed from quiet rest to sympathetic activation using the cold pressor test
Time frame: Before and after 9 weeks of androgen deprivation therapy or placebo
Change in Exercise Pressor Reflex
The change in systolic blood pressure will be assessed from quiet rest to isometric handgrip exercise
Time frame: Before and after 9 weeks of androgen deprivation therapy or placebo
Change in Ambulatory Blood Pressure Variability
Ambulatory systolic blood pressure variability will be determined from 24-hour ambulatory blood pressure monitoring using the standard deviation of blood pressure readings
Time frame: Before and after 9 weeks of androgen deprivation therapy or placebo
Change in Beat-to-beat Blood Pressure Variability
Beat-to-beat systolic blood pressure variability will be determined using the standard deviation of blood pressure readings from finger photoplethysmography measured in the laboratory.
Time frame: Before and after 9 weeks of androgen deprivation therapy or placebo
Change in Renal Vascular Resistance
Renal blood flow will be determined using ultrasound and blood pressure will be determined using finger photoplethysmography. These measures will be used to estimate renal vascular resistance.
Time frame: Before and after 9 weeks of androgen deprivation therapy or placebo
Change in Renal Dysfunction Biomarkers
Neutrophil gelatinase-associated lipocalin (NGAL), tissue inhibitor of metalloproteinases 2 (TIMP2), and insulin-like growth factor binding protein 7 (IGFBP7) will be quantified in urine using commercially available assay kits. Concentrations will be normalized to urinary flow rate.
Time frame: Before and after 9 weeks of androgen deprivation therapy or placebo
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