Heart Failure Clinical Trial
— PMEDOfficial title:
An Open Label Study of Oral Nitrate in Adults With Pulmonary Hypertension With Heart Failure and Preserved Ejection Fraction (PH-HFpEF) and Normal Healthy Adults
Verified date | March 2022 |
Source | University of Pittsburgh |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
This is an open-label, single-center study to examine distinguishing features of the structure and function of the oral and gut microbiome in healthy adult normal volunteers compared to volunteers with PH-HFpEF in the breakdown of oral nitrate.
Status | Completed |
Enrollment | 77 |
Est. completion date | February 25, 2022 |
Est. primary completion date | February 25, 2022 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years and older |
Eligibility | INCLUSION: - Male or female, 18 years of age or older - PH group: Pulmonary hypertension, hemodynamically defined by a mean PAP = 25 mm Hg, and a TPG >= 12 at rest or during exercise as demonstrated on a right heart catheterization in the last 10 years - RHC Control group: Normal hemodynamics (mean PAP < 25 mm Hg, PCWP = 15 mm Hg) on clinical right heart catheterization - Healthy Control group: Healthy patients with no evidence of pulmonary hypertension, respiratory or cardiac disease - Ability to provide written informed consent EXCLUSION: - Use of systemic antibiotics and/or chlorhexidine mouthwash, within the previous three months - Use of immune suppression (chemotherapy, oral prednisone greater than 20mg per day, etc) with in the previous three months - Use of phosphodiesterase-5 inhibitors (tadalafil, sildenafil, etc) within 7 days before study drug administration - Current pregnancy or lactation - Uncontrolled systemic hypertension based on repeated measurement of sitting systolic blood pressure >185 mm Hg or sitting diastolic blood pressure >110 mm Hg at screening - Has chronic renal insufficiency as defined by serum creatinine >3 mg/dL at screening or requires dialytic support - Known history of left ventricular ejection fraction < 40% by multiple gated acquisition scan (MUGA), angiography, or echocardiography - History of atrial septostomy - Repaired or unrepaired congenital heart disease - Pericardial constriction - Restrictive or constrictive cardiomyopathy - Symptomatic coronary disease with demonstrable ischemia - Addition or change in dosing of hormonal contraception medications (OCP, IUD, Depo-Provera) in the past 4 weeks. - Other severe acute or chronic medical or laboratory abnormality that may increase the risk associated with study participation or investigational product administration, that may interfere with the interpretation of study results and, in the judgment of the investigator, would make the subject inappropriate for entry into this study or would prevent completion of the study - Active participation in other research studies with investigational drugs |
Country | Name | City | State |
---|---|---|---|
United States | Nydia Chien | Pittsburgh | Pennsylvania |
United States | University of Pittsburgh | Pittsburgh | Pennsylvania |
Lead Sponsor | Collaborator |
---|---|
Gladwin, Mark, MD | National Heart, Lung, and Blood Institute (NHLBI) |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Change in nitrate level in urine | The investigators will examine urine nitrate | Urine collected approx 0 & 6 hours after drug administration | |
Primary | Change in nitrate level in plasma | The investigators will examine plasma nitrate | Approx 50cc of blood drawn approx 0, 2, & 6 hours after drug administration | |
Primary | Bacterial content of gut microbiome | Stool will be analyzed for bacterial makeup | Stool collected before drug administration | |
Primary | Bacterial content of the oral microbiome | Saliva and tongue scraping will be analyzed for bacterial makeup | Saliva and tongue scraping will occur preceding administration of drug | |
Primary | Change in nitrite level in urine | The investigators will examine urine nitrite | Urine collected approx 0 & 6 hours after drug administration | |
Primary | Change in nitrite level in plasma | The investigators will examine plasma nitrite | Approx 50cc of blood drawn approx 0, 2, & 6 hours after drug administration | |
Secondary | Change in blood pressure | Frequently over 6 hour study visit | ||
Secondary | Change in heart rate | Continuous over 6 hour study visit | ||
Secondary | Change in respiratory rate | Continuous over 6 hour study visit | ||
Secondary | Change in hemoglobin concentration | Continuous over 6 hour study visit |
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