- ICH GCP
- Yhdysvaltain kliinisten tutkimusten rekisteri
- Kliininen tutkimus NCT01681836
Oral Nitrite and Nitrate in Healthy Normal Volunteer Adults
An Open-Label Study of Oral Nitrite and Nitrate in Healthy Normal Volunteer Adults
Tutkimuksen yleiskatsaus
Tila
Yksityiskohtainen kuvaus
Preclinical and clinical research over the last decade has revealed the important vasoprotective effects of nitrates and nitrites with regards to reduction in blood pressure, vascular inflammation and endothelial dysfunction. New findings suggest an effect of nitrate and nitrite therapy in the regulation of glucose-insulin homeostasis. Development of an oral formulation of nitrate and nitrite salts is attractive, whereby nitrite would ensure rapid acting effects upon absorption, while the nitrate would continuously provide a slow formation of nitrite over a prolonged period of time via the enterosalivary circulation pathway.
For this reason, development of an oral formulation of nitrate and nitrite salts is attractive, whereby nitrite would ensure rapid acting effects upon absorption, while the nitrate would continuously provide a slow formation of nitrite over a prolonged period of time via the enterosalivary circulation pathway. This study aims to establish the pharmacokinetics, metabolism and interconversion of nitrate to nitrite and nitrite to nitric oxide in vivo in healthy adult normal volunteers.
Opintotyyppi
Ilmoittautuminen (Todellinen)
Vaihe
- Vaihe 1
Yhteystiedot ja paikat
Opiskelupaikat
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Pennsylvania
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Pittsburgh, Pennsylvania, Yhdysvallat, 15213
- Montefiore Hospital of UPMC
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
Hyväksyy terveitä vapaaehtoisia
Sukupuolet, jotka voivat opiskella
Kuvaus
Inclusion Criteria:
- Age 18-60 years
- Systolic blood pressure ≤130 and diastolic blood pressure ≤85 mm Hg
Exclusion Criteria:
- Positive urine pregnancy test or breastfeeding
- Concurrent use of medications affecting glucose or lipid metabolism
- Recent addition or change in dosing of hormonal contraceptive medications (oral contraceptive pill, intrauterine device, DepoProvera)
- Current use of ≥2 anti-hypertensive agents regardless of blood pressure control or normotensive on a single agent
- Current use of phosphodiesterase 5 inhibitors or organic nitrates
- Not stable on treatments for the prior three months or not planning to remain on current dose of medications for blood pressure, contraception, etc
- Known chronic psychiatric or medical conditions including diabetes, liver or kidney disease or obesity syndromes
- Smoker
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Muut
- Jako: Satunnaistettu
- Inventiomalli: Crossover-tehtävä
- Naamiointi: Ei mitään (avoin tarra)
Aseet ja interventiot
Osallistujaryhmä / Arm |
Interventio / Hoito |
|---|---|
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Kokeellinen: Oral 15N-labeled sodium nitrate
Oral sodium nitrate 1,000 mg once first, then washout followed by oral sodium nitrite 20 mg once
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15Nitrogen(15N)-labeled sodium nitrite 20 mg once
15Nitrogen(15N)-labeled sodium nitrate 1,000 mg once
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Kokeellinen: Oral 15N-labeled sodium nitrite
Oral sodium nitrite 20 mg once first, then washout followed by oral sodium nitrate 1,000 mg once
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15Nitrogen(15N)-labeled sodium nitrite 20 mg once
15Nitrogen(15N)-labeled sodium nitrate 1,000 mg once
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Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Peak Plasma Nitrate Concentration Over 24 Hour Study Period
Aikaikkuna: measured at 0 (baseline), 0.5, 1, 2, 3, 6 and 24 hours post-doses
|
"Post-doses" refers to that subjects will receive a single dose of each study drug, oral 15Nitrogen(15N)-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period
|
measured at 0 (baseline), 0.5, 1, 2, 3, 6 and 24 hours post-doses
|
|
Peak Plasma Nitrite Concentration Over 24 Hour Study Period
Aikaikkuna: measured at 0 (baseline), 0.5, 1, 2, 3, 6 and 24 hours post-doses
|
"Post-doses" refers to that subjects will receive a single dose of each study drug, oral 15Nitrogen(15N)-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period
|
measured at 0 (baseline), 0.5, 1, 2, 3, 6 and 24 hours post-doses
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|
Peak Red Blood Cell (RBC) Iron-nitrosyl Hemoglobin (NO-Hb) Concentrations Over 24 Hour Study Period
Aikaikkuna: measured at 0 (baseline), 0.5, 1, 2, 3, 6 and 24 hours post-doses
|
"Post-doses" refers to that subjects will receive a single dose of each study drug, oral 15Nitrogen(15N)-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period
|
measured at 0 (baseline), 0.5, 1, 2, 3, 6 and 24 hours post-doses
|
Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Peak Percentage Level of Methemoglobin Over 24 Hour Study Period
Aikaikkuna: measured at 0 (baseline), 0.5, 1, 2, 3, 6 and 24 hours post-doses
|
"Post-doses" refers to that subjects will receive a single dose of each study drug, oral 15N-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period
|
measured at 0 (baseline), 0.5, 1, 2, 3, 6 and 24 hours post-doses
|
|
Peak Change in Mean Arterial Pressure Over 24 Hour Study Period
Aikaikkuna: measured at 0 (baseline) then every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose, change at 0.75 hours reported
|
"Post-dose" refers to that subjects will receive a single dose of each study drug, oral 15N-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period
|
measured at 0 (baseline) then every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose, change at 0.75 hours reported
|
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Peak Change in Systolic Blood Pressure Over 24 Hour Study Period
Aikaikkuna: measured at 0 (baseline) then every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose, change at 1.5 hours reported
|
"Post-dose" refers to that subjects will receive a single dose of each study drug, oral 15N-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period
|
measured at 0 (baseline) then every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose, change at 1.5 hours reported
|
|
Peak Change in Diastolic Blood Pressure Over 24 Hour Study Period
Aikaikkuna: measured at 0 (baseline) then every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose, change at 0.75 hours reported
|
"Post-dose" refers to that subjects will receive a single dose of each study drug, oral 15N-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period
|
measured at 0 (baseline) then every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose, change at 0.75 hours reported
|
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Peak 15Nitrogen Nitro-conjugated Linoleic Acid (cLA) Concentrations Over 24 Hour Study Period
Aikaikkuna: measured at time 0 (trough), every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose
|
"Post-dose" refers to that subjects will receive a single dose of each study drug, oral 15N-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period
|
measured at time 0 (trough), every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose
|
|
Percent Platelet Activation at 6 Hours
Aikaikkuna: measured at 0 (baseline), 6 and 24 hours post-dose
|
at timepoint with greatest change from 0 (trough); "Post-dose" refers to that subjects will receive a single dose of each study drug, oral 15N-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period; percentage of platelets that express 2 specific markers identifying activated platelets (CD41 and CD62-P) were quantified using flow cytometry
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measured at 0 (baseline), 6 and 24 hours post-dose
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Peak Change in Heart Rate Over 24 Hour Study Period
Aikaikkuna: measured at 0 (baseline), every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose, change at 1.5 hours for nitrate and 24 hours for nitrite
|
"Post-dose" refers to that subjects will receive a single dose of each study drug, oral 15N-labeled sodium nitrate and nitrite, in random order, separated by a 3-7 day washout period
|
measured at 0 (baseline), every 15 minutes during the first 2 hours post-dose, then at 3, 6, and 24 hours post-dose, change at 1.5 hours for nitrate and 24 hours for nitrite
|
Yhteistyökumppanit ja tutkijat
Sponsori
Tutkijat
- Päätutkija: Kara S Hughan, MD, University of Pittsburgh
- Opintojohtaja: Mark T Gladwin, MD, University of Pittsburgh
- Opintojohtaja: Bret Goodpaster, PhD, University of Pittsburgh
Julkaisuja ja hyödyllisiä linkkejä
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus
Ensisijainen valmistuminen (Todellinen)
Opintojen valmistuminen (Todellinen)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Arvio)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Muut tutkimustunnusnumerot
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