Safety and Tolerability of Coenzyme Q10 in Hemodialysis Patients
The purpose of this study is to determine the safety and tolerability of the dietary supplement Coenzyme Q10 in hemodialysis patients.
End Stage Renal Disease
Dietary Supplement: Coenzyme Q10
|Study Design:||Endpoint Classification: Safety Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Prevention
|Official Title:||Safety, Tolerability and Efficacy of Coenzyme Q10 in Hemodialysis Patients: Aim 1|
- Safety Measures: * Laboratory tests on serum: Comprehensive metabolic panel and creatinine phosphokinase. * Electrocardiogram, physical examination findings, and adverse events. [ Time Frame: Every two weeks ] [ Designated as safety issue: Yes ]
- Efficacy Measures: Markers in the blood indicating "oxidative stress" [ Time Frame: Every two weeks ] [ Designated as safety issue: No ]
- Serum biomarkers of Cardiovascular condition and health [ Time Frame: At baseline study visit and last study visit ] [ Designated as safety issue: No ]
|Study Start Date:||February 2010|
|Study Completion Date:||November 2010|
|Primary Completion Date:||October 2010 (Final data collection date for primary outcome measure)|
Dietary Supplement: Coenzyme Q10
- 300 mg for two weeks
- 600 mg for two weeks
- 1200 mg for two weeks
- 1800 mg for final two weeks
By mouth (wafer) once daily for duration of study (8 weeks).
There are more than 400,000 patients receiving dialysis in the United States, and we expect that this number will go up. For those on hemodialysis, cardiovascular disease (CVD) accounts for a large part of the health problems that these patients have. Cardiovascular problems come from damage to the heart or blood vessels.
At present, we have no treatments proven to help prevent CVD in those on dialysis. For the general population, we know about many factors that increase the risk of CVD, such as having a high level of "bad" cholesterol. But for people on dialysis, we believe that there are other risk factors that are just as important in the development of CVD.
People on dialysis often have high blood levels of waste products. This is called "uremia". We believe that uremia can set up chemical reactions in the blood which can lead to hardening of the arteries (atherosclerosis), an important part of CVD. Compounds called antioxidants, which stop the chemical reactions, may help prevent CVD.
Coenzyme Q10 is a naturally occurring compound in blood and tissues. It is also a readily available dietary supplement often used as an alternative and complementary medicine. It is a powerful antioxidant. Previous studies have shown that blood levels of coenzyme Q10 are decreased in hemodialysis patients. Because of this, it is important for us to find out if giving coenzyme Q10 to hemodialysis patients can help prevent CVD. However, at present, there are no studies which carefully look at the safety and tolerability of coenzyme Q10, and whether it helps stops the harmful chemical reactions in the blood.
In addition, many people take medications called "statins" to help reduce risk for cardiovascular disease. We know that statins can lower coenzyme Q10. It is important for us to know if hemodialysis patients taking statins have lower levels of coenzyme Q10. It may be that therapy with coenzyme Q10 could increase the beneficial effects of statin therapy in hemodialysis patients.
In this study, we will test to see if different doses of the dietary supplement coenzyme Q10 will be safe and well tolerated in hemodialysis patients. This is with a view to later studies to determine if coenzyme Q10 will help stop harmful chemical reactions in the blood for hemodialysis patients. This study will help us prepare for future studies of coenzyme Q10, by demonstrating the safely and tolerability of this compound in hemodialysis patients.
|United States, Washington|
|Northwest Kidney Centers - Scribner|
|Seattle, Washington, United States, 98122|
|Principal Investigator:||Jonathan Himmelfarb, MD||University of Washington - Kidney Research Institute|