Denne side blev automatisk oversat, og nøjagtigheden af ​​oversættelsen er ikke garanteret. Der henvises til engelsk version for en kildetekst.

Levels of Raltegravir in the Female Genital Tissue

18. december 2014 opdateret af: Caroline Mitchell, University of Washington

Modeling Intracellular and Extracellular Raltegravir (RAL) Pharmacokinetics in the Female Genital Tract and Blood After a Twice Daily 400mg Dose Over the Course of a Menstrual Cycle

This study is an investigation of the pharmacokinetics of raltegravir in the tissue of the female genital tract to determine if twice-daily dosing of 400mg achieves adequate drug levels to prevent viral integration of HIV-1. The study will also assess whether drug levels change in the tissue across the different phases of the menstrual cycle.

  • Hypothesis #1: Twice daily dosing with raltegravir 400mg will result in intracellular concentrations that should be sufficient to suppress HIV-1 replication throughout the menstrual cycle.
  • Hypothesis #2: Intracellular genital raltegravir peaks will be lower and troughs higher compared to extracellular concentrations in the plasma and PMBCs (peripheral blood mononuclear cells).
  • Hypothesis #3: Intracellular raltegravir concentrations will be slightly lower during the luteal phase of the menstrual cycle due to cellular pumps such as p-glycoprotein, which are present in higher numbers during periods of high progesterone.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

HIV-1 is shed in genital secretions which increase the risk of transmission between sexual partners and from mother to infant. Antiretroviral medication taken prior to exposure to HIV-1 can prevent viral transmission from a mother to her infant. Raltegravir (RAL), by blocking integration of viral cDNA into the host's genome, makes an excellent candidate for preventing HIV-1 infection. RAL is licensed for treatment with twice-daily dosing based on plasma trough concentrations; however, intracellular concentrations of RAL which are relevant to blocking infection of cells have not been previously studied. P-glycoprotein pumps, which are involved in regulating drug absorption and metabolism, can influence intracellular drug concentrations. P-glycoprotein concentrations appear to vary with menstrual cycle suggesting it may affect intracellular drug concentration of RAL in women.

Women will be enrolled in the study and followed during the course of a menstrual cycle while taking a dose of 400mg PO twice daily. An initial screening visit will be performed prior to enrollment and participation in the study. Review of medical history as well as blood and urine collection will occur during the screening visit. Once enrolled, participants will have blood and genital tract samples collected once a week for four weeks to assess intracellular concentrations of RAL in the blood and genital tract tissue.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

10

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • Washington
      • Seattle, Washington, Forenede Stater, 98195
        • University of Washington, Clinical Research Center

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

18 år til 50 år (Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Kvinde

Beskrivelse

Inclusion Criteria

Volunteers must be:

  • Over 18 years of age.
  • Willing to abstain from sexual intercourse during course of study.
  • Able to commit to follow-up visit schedule.
  • Willing to abstain from use of vaginal medications or creams 48 hours prior to follow-up visits.
  • Willing and able to provide informed consent.

Exclusion Criteria

Volunteers will not be eligible for the study if they:

  • Are over 50 years of age.
  • Are pregnant, attempting to become pregnant, or breast-feeding.
  • Have irregular menstrual bleeding.
  • Are using a hormonal form of birth control.
  • Have abnormal liver/kidney function test results at screening visit.
  • Have HIV-positive test result at screening visit.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: All
All patients were part of the intervention arm, as this was a pharmacokinetic study. All women took Raltegravir 400mg orally, twice daily for 3 weeks.
Medicin: Raltegravir
Dosage: 400mg/PO (by mouth) Frequency: Twice daily Duration: During course of menstrual cycle (28 days)
Andre navne:
  • Isentress

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Tissue Raltegravir Concentrations
Tidsramme: 7, 14, 21 days
Mean trough concentration from all three days. Tissue concentrations are measured from cervical biopsy homogenate using a mass-spectroscopy-based method.
7, 14, 21 days

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Plasma Raltegravir Concentrations
Tidsramme: 7, 14, 21 days
Mean trough concentration from all 3 days
7, 14, 21 days

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University of Washington

Samarbejdspartnere

Merck Sharp & Dohme LLC

Efterforskere

  • Ledende efterforsker: Caroline Mitchell, MD, University Washington
  • Ledende efterforsker: Lisa Frenkel, MD, Seattle Children's Research Institute

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. oktober 2011

Primær færdiggørelse (Faktiske)

1. december 2012

Datoer for studieregistrering

Først indsendt

30. marts 2011

Først indsendt, der opfyldte QC-kriterier

31. marts 2011

Først opslået (Skøn)

1. april 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

19. december 2014

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

18. december 2014

Sidst verificeret

1. december 2014

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 38681-D

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med HIV

Kliniske forsøg med Raltegravir

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

Medicinske tilstande

Narkotikainterventioner

CROs by country

CROs in Malta

Betingelser

Sjældne sygdomme

Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

Abonner