Effects of Gastric pH on the Pharmacokinetics of Atazanavir
Effects of Gastric pH on the Pharmacokinetics of Atazanavir in Healthy Volunteers
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Fase 1
Kontakter og lokationer
Studiesteder
-
-
California
-
San Francisco, California, Forenede Stater, 94143
- Clinical Research Center, UCSF
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Male or female 18-65 years of age
- Healthy adult with no active medical problems or significant chronic diseases as determined by the study doctor based on history, physical exam and laboratory evaluations
- BMI between 18.5-30 kg/m2
- Taking no medications 2 weeks before and during the study enrollment, including drugs of abuse, prescription or over-the-counter (OTC) medications (except acetaminophen)
- Subjects able to maintain adequate birth control during the study independent of hormonal contraceptive use
- Be able to provide written informed consent and comply with requirements of the study
- Avoid eating grapefruit and drinking grapefruit juice from 7 days before the first study day until the completion of the entire study
- Abstinence from alcoholic beverages, caffeinated beverages and orange juice from 3pm the night before a study day until completion of that study day
- Fast from food and beverages at least 8 hours prior to medication dosing
- Be able to read, speak, and understand English
Exclusion Criteria:
- Subjects with a history of gastrointestinal disease including gastroesophageal reflux disease, gastritis, peptic ulcer disease, or dyspepsia
- Subjects with a fasting gastric pH of > 4 (i.e. hypochlorhydria)
- Subjects with a history of dysphagia, achalasia, or difficulty swallowing capsules, tablets, or pills
- Subjects on prescription or chronic over-the-counter (OTC) medications (including hormonal contraceptives)
- Subjects with known allergies rabeprazole, any other proton pump inhibitors (PPI's) or betaine hydrochloride
- Subjects who smoke tobacco
- Subjects with ongoing alcohol or illegal drug use
- Subjects who are pregnant, lactating, or attempting to conceive
- Subjects unable to maintain adequate birth control during the study
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Aktiv komparator: Ritonavir-boosted Atazanavir
|
Ritonavir (100mg) PO x1 and Atazanavir (300mg) PO x1
|
|
Eksperimentel: Ritonavir-boosted Atazanavir plus Rabeprazole
|
Rabeprazole (20mg) PO twice daily (Days 1-3); Ritonavir (100mg) PO x1 and Atazanavir (300mg) PO x1 (Day 4)
|
|
Eksperimentel: Ritonavir-boosted Atazanavir plus Rabeprazole AND Betaine HCl
|
Rabeprazole (20mg) PO twice daily (Days 1-3); Betaine Hydrochloride (1500mg) PO x1 AND Ritonavir (100mg) PO x1 and Atazanavir (300mg) PO x1 on Day 4
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Area-Under-the Concentration Curve from zero-to-twenty two hours (AUC,0-22) of Atazanavir
Tidsramme: Day 4
|
The primary outcome measure will be atazanavir area-under-the-concentration curve (AUC) values from zero-to-twenty two (0-22) hours.
Values from Experimental Arms of the study (Ritonavir-boosted Atazanavir plus Rabeprazole; Ritonavir-boosted Atazanavir plus Rabeprazole AND Betaine Hydrochloride) will be compared against the active comparator (Ritonavir-boosted atazanavir alone) and tested for statistical significance.
|
Day 4
|
|
Area-Under-the Concentration Curve from zero-to-infinity (AUC,0-inf) of Atazanavir
Tidsramme: Day 4
|
The primary outcome measure will be atazanavir area-under-the-concentration curve (AUC) values from zero-to-infinite time (0-inf).
Values from Experimental Arms of the study (Ritonavir-boosted Atazanavir plus Rabeprazole; Ritonavir-boosted Atazanavir plus Rabeprazole AND Betaine Hydrochloride) will be compared against the active comparator (Ritonavir-boosted Atazanavir alone) and tested for statistical significance.
|
Day 4
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Maximum Concentration of Atazanavir
Tidsramme: Day 4
|
The maximum plasma concentration (Cmax) will also be measured.
Values from Experimental Arms of the study (Ritonavir-boosted Atazanavir plus Rabeprazole; Ritonavir-boosted Atazanavir plus Rabeprazole AND Betaine Hydrochloride) will be compared against the active comparator (Ritonavir-boosted Atazanavir alone) and tested for statistical significance.
|
Day 4
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Molekylære mekanismer for farmakologisk virkning
- Anti-infektionsmidler
- Antivirale midler
- Enzymhæmmere
- Anti-HIV-midler
- Anti-retrovirale midler
- Antimetabolitter
- Gastrointestinale midler
- Proteasehæmmere
- Hypolipidæmiske midler
- Lipidregulerende midler
- Cytokrom P-450 CYP3A-hæmmere
- Cytokrom P-450 enzymhæmmere
- Anti-ulcus midler
- Protonpumpehæmmere
- HIV-proteasehæmmere
- Virale proteasehæmmere
- Lipotrope midler
- Ritonavir
- Rabeprazol
- Atazanavirsulfat
- Betain
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- CRS6537
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