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This study will investigate whether the lacto-tripeptide Ile-Pro-Pro (IPP) improves the function of the endothelium in patients with coronary artery disease. The study has a crossover design. Participants will be treated with a protein hydrolysate rich in IPP for 12 weeks and placebo for 12 weeks with a four-week rest period between treatment periods. The investigators will use ultrasound to test the function of the endothelium in the brachial artery before, after 6 weeks, and after 12 weeks of each treatment. Blood will be collected before and after each treatment. The investigators hypothesize that IPP will improve endothelial function.
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| IPP | Dietary Supplement | Protein hydrolysate rich in lacto-tripeptide (IPP) up to 5 to 15 mg/day | ||
| Placebo | Other | Matching placebo capsules |
| Measure | Description | Time Frame |
|---|---|---|
| Brachial Artery Flow-Mediated Dilation and Reactive Hyperemia | 12 weeks |
| Measure | Description | Time Frame |
|---|---|---|
| Carotid-Femoral Pulse Wave Velocity | 12 weeks | |
| Leg Reactive Hyperemia | 12 weeks | |
| Digital Pulse Amplitude Tonometry |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Joseph A Vita, MD | Boston University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Boston University Medical Center | Boston | Massachusetts | 02118 | United States |
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| ID | Term |
|---|---|
| D003324 | Coronary Artery Disease |
| ID | Term |
|---|---|
| D003327 | Coronary Disease |
| D017202 | Myocardial Ischemia |
| D006331 | Heart Diseases |
| D002318 | Cardiovascular Diseases |
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| ID | Term |
|---|---|
| C041272 | indolepropanol phosphate |
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| 12 weeks |
| Blood pressure | 12 weeks |
| D001161 |
| Arteriosclerosis |
| D001157 | Arterial Occlusive Diseases |
| D014652 | Vascular Diseases |