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The investigators will compare the effects of rapid release aspirin and NHP-544C on the prostacyclin response to intravenous bradykinin.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Group 1:Aspirin/placebo | Active Comparator | Group 1 will be randomized to the order in which they receive rapid-release aspirin (ASA), 81 mg), ASA 162.5 mg, and identical-appearing placebo for 5 days. Bradykinin will be given intravenously in graded doses on the fifth day of each treatment period. |
|
| Group 2:NHP-544C/placebo | Active Comparator | Group 2 will be randomized to the order in which they receive NHP-544C 81 mg, NPH-544C 162.5 mg and identical-appearing placebo for five days. Bradykinin will be given intravenously in graded doses on the fifth day of each treatment period. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Bradykinin | Drug | Bradykinin will be given intravenously in graded doses. Each dose will be given for 15 minutes. |
|
| Measure | Description | Time Frame |
|---|---|---|
| Urine Thromboxane Concentrations at Placebo ASA or Placebo NHP-544C Dose | 24 hour collection | |
| Urine Thromboxane Concentrations at 81mg ASA or NHP-544C Dose | 24 hour collection | |
| Urine Thromboxane Concentrations at 162.5 mg ASA or NHP-544C Dose | 24 hour collection | |
| Urine Prostacyclin Concentrations at Placebo ASA or Placebo NHP-544C Dose | 24 hour collection | |
| Urine Prostacyclin Concentrations at 81 mg ASA or NHP-544C Dose | 24 hour collection | |
| Urine Prostacyclin Concentrations at 162.5 mg ASA or NHP-544C Dose | 24 hour collection |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Nancy J Brown, MD | Vanderbilt University Medical Center | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Vanderbilt University Medical Center | Nashville | Tennessee | 37232 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 27069632 | Result | Gamboa JL, Devin JK, Ramirez CE, Yu C, Nian H, Lee RH, Brown NJ. Comparative effects of immediate-release and extended-release aspirin on basal and bradykinin-stimulated excretion of thromboxane and prostacyclin metabolites. Pharmacol Res Perspect. 2016 Feb 23;4(2):e00221. doi: 10.1002/prp2.221. eCollection 2016 Apr. |
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Twenty-five enrolled participants were excluded prior to randomization to study group because they did not meet inclusion or exclusion criteria.
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| ID | Title | Description |
|---|---|---|
| FG000 | Group 1:Aspirin/Placebo | Group 1 will be randomized to receive rapid release aspirin (ASA, 81 mg), ASA 162.5 mg, or identical-appearing placebo for 5 days. Bradykinin will be given intravenously in graded doses on the fifth day of study. Bradykinin: Bradykinin will be given intravenously in graded doses. Each dose will be given for 15 minutes. Aspirin 81 mg: Subjects will take Aspirin 81 mg per day for five days. Aspirin 162 mg: Subjects will take aspirin 162 mg per day for 5 days. Placebo: Subjects will take matching placebo for five days. Three subjects participated in each possible sequence with the following exceptions: Four subjects participated in the sequence Aspirin 81 mg, Aspirin 162.5 mg, placebo; two subjects participated in the sequence placebo, Aspirin 162.5 mg, Aspirin 81 mg. |
| FG001 | Group 2:NHP-544C/Placebo | Group 2 will be randomized to receive NHP-544C 81 mg, NPH-544C 162.5 mg or placebo. Bradykinin will be given intravenously in graded doses on the fifth day of study drug. Bradykinin: Bradykinin will be given intravenously in graded doses. Each dose will be given for 15 minutes. NHP544-C 81 mg: Subjects will take NHP544C 81 mg per day for five days. NHP544C 162 mg: Subjects will take NHP544C 162 mg once a day for five days. Placebo: Subjects will take matching placebo for five days. Three subjects participated in each possible sequence with the following exceptions: Four subjects participated in the sequence NHP544C 81 mg, NHP544C 162 mg, placebo; two subjects participated in the sequence NHP544C 162 mg, placebo, NHP544C 81 mg. |
| Title | Milestones | Reasons Not Completed | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall Study |
|
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| ID | Title | Description |
|---|---|---|
| BG000 | Group 1:Aspirin/Placebo | Group 1 will be randomized to receive rapid release aspirin (ASA, 81 mg), ASA 162.5 mg, or identical-appearing placebo for 5 days. Bradykinin will be given intravenously in graded doses on the fifth day of study. Bradykinin: Bradykinin will be given intravenously in graded doses. Each dose will be given for 15 minutes. Aspirin 81 mg: Subjects will take Aspirin 81 mg per day for five days. Aspirin 162 mg: Subjects will take aspirin 162 mg per day for 5 days. Placebo: Subjects will take matching placebo for five days. |
| Units | Counts |
|---|---|
| Participants |
|
| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes |
|---|---|---|---|---|---|---|---|---|---|
| Age, Continuous | Mean |
| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Primary | Urine Thromboxane Concentrations at Placebo ASA or Placebo NHP-544C Dose | Posted | Median | Inter-Quartile Range | ng/mg creatinine | 24 hour collection |
|
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Group 1:Aspirin/Placebo | Group 1 will be randomized to receive rapid release aspirin (ASA, 81 mg), ASA 162.5 mg, or identical-appearing placebo for 5 days. Bradykinin will be given intravenously in graded doses on the fifth day of study. Bradykinin: Bradykinin will be given intravenously in graded doses. Each dose will be given for 15 minutes. Aspirin 81 mg: Subjects will take Aspirin 81 mg per day for five days. Aspirin 162 mg: Subjects will take aspirin 162 mg per day for 5 days. Placebo: Subjects will take matching placebo for five days. |
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| Term | Organ System | Source Vocabulary | Assessment Type | Notes | Statistical Information |
|---|---|---|---|---|---|
| ST T wave changes following bradykinin infusion | Cardiac disorders | Systematic Assessment |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Nancy J. Brown, M.D. | VANDERBILT UNIVERSITY MEDICAL CENTER | 6153438701 | nancy.j.brown@vanderbilt.edu |
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| ID | Term |
|---|---|
| D001920 | Bradykinin |
| D001241 | Aspirin |
| ID | Term |
|---|---|
| D007705 | Kinins |
| D036341 | Intercellular Signaling Peptides and Proteins |
| D010455 | Peptides |
| D000602 | Amino Acids, Peptides, and Proteins |
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|
| Aspirin 81 mg | Drug | Subjects will take Aspirin 81 mg per day for five days. |
|
|
| Aspirin 162 mg | Drug | Subjects will take aspirin 162 mg per day for 5 days. |
|
|
| NHP544-C 81 mg | Drug | Subjects will take NHP544C 81 mg per day for five days. |
|
| NHP544C 162 mg | Drug | Subjects will take NHP544C 162 mg once a day for five days. |
|
| Placebo | Drug | Subjects will take matching placebo for five days. |
|
| BG001 | Group 2:NHP-544C/Placebo | Group 2 will be randomized to receive NHP-544C 81 mg, NPH-544C 162.5 mg or placebo. Bradykinin will be given intravenously in graded doses on the fifth day of study drug. Bradykinin: Bradykinin will be given intravenously in graded doses. Each dose will be given for 15 minutes. NHP544-C 81 mg: Subjects will take NHP544C 81 mg per day for five days. NHP544C 162 mg: Subjects will take NHP544C 162 mg once a day for five days. Placebo: Subjects will take matching placebo for five days. |
| BG002 | Total | Total of all reporting groups |
| years |
|
| Sex: Female, Male | Count of Participants | Participants |
|
| Ethnicity (NIH/OMB) | Count of Participants | Participants |
|
| Race (NIH/OMB) | Count of Participants | Participants |
|
| 11-dehydrothromboxane B2 | Median | Inter-Quartile Range | ng/mg creatinine |
|
| 2,3-dinor-6-keto-PGF1alpha | Median | Inter-Quartile Range | ng/mg creatinine |
|
Group 2 will be randomized to the order in which they receive NHP-544C 81 mg, NPH-544C 162.5 mg and identical-appearing placebo for five days. Bradykinin will be given intravenously in graded doses on the fifth day of each treatment period.
Bradykinin: Bradykinin will be given intravenously in graded doses. Each dose will be given for 15 minutes.
NHP544-C 81 mg: Subjects will take NHP544C 81 mg per day for five days.
NHP544C 162 mg: Subjects will take NHP544C 162 mg once a day for five days.
Placebo: Subjects will take matching placebo for five days.
|
|
| Primary | Urine Thromboxane Concentrations at 81mg ASA or NHP-544C Dose | Posted | Median | Inter-Quartile Range | ng/mg creatinine | 24 hour collection |
|
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| Primary | Urine Thromboxane Concentrations at 162.5 mg ASA or NHP-544C Dose | Posted | Median | Inter-Quartile Range | ng/mg creatinine | 24 hour collection |
|
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| Primary | Urine Prostacyclin Concentrations at Placebo ASA or Placebo NHP-544C Dose | Posted | Median | Inter-Quartile Range | ng/mg creatinine | 24 hour collection |
|
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| Primary | Urine Prostacyclin Concentrations at 81 mg ASA or NHP-544C Dose | Posted | Median | Inter-Quartile Range | ng/mg creatinine | 24 hour collection |
|
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| Primary | Urine Prostacyclin Concentrations at 162.5 mg ASA or NHP-544C Dose | Data are given for 162.5 mg study day | Posted | Median | Inter-Quartile Range | ng/mg creatinine | 24 hour collection |
|
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|
| 0 |
| 18 |
| 7 |
| 18 |
| EG001 | Group 2:NHP-544C/Placebo | Group 2 will be randomized to receive NHP-544C 81 mg, NPH-544C 162.5 mg or placebo. Bradykinin will be given intravenously in graded doses on the fifth day of study drug. Bradykinin: Bradykinin will be given intravenously in graded doses. Each dose will be given for 15 minutes. NHP544-C 81 mg: Subjects will take NHP544C 81 mg per day for five days. NHP544C 162 mg: Subjects will take NHP544C 162 mg once a day for five days. Placebo: Subjects will take matching placebo for five days. | 0 | 18 | 6 | 18 |
| Sinus or nasal congestion | Respiratory, thoracic and mediastinal disorders | Systematic Assessment |
|
| low albumin | Hepatobiliary disorders | Systematic Assessment |
|
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| D009479 | Neuropeptides |
| D009842 | Oligopeptides |
| D011506 | Proteins |
| D009419 | Nerve Tissue Proteins |
| D012898 | Autacoids |
| D018836 | Inflammation Mediators |
| D001685 | Biological Factors |
| D012459 | Salicylates |
| D062385 | Hydroxybenzoates |
| D010636 | Phenols |
| D001555 | Benzene Derivatives |
| D006841 | Hydrocarbons, Aromatic |
| D006844 | Hydrocarbons, Cyclic |
| D006838 | Hydrocarbons |
| D009930 | Organic Chemicals |