- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT00746174
Insulin Resistance and Intramyocellular Lipid Content in Glucose Intolerant Subjects Receiving Rosiglitazone
2. september 2008 opdateret af: University of Texas Southwestern Medical Center
This study will include subjects with an abnormal glucose tolerance test.
Using a crossover design, we will evaluate the insulin sensitivity and intracellular lipid content of the heart, liver and skeletal muscle of subjects before and after therapy with Rosiglitazone and placebo.
We hypothesize that Rosiglitazone will improve insulin sensitivity in association with reduced muscle lipid content that may arise either from increased lipid oxidation or enhanced storage of fat in adipose tissue.
Studieoversigt
Status
Afsluttet
Betingelser
Intervention / Behandling
Detaljeret beskrivelse
This protocol is a crossover study that will include subjects with an abnormal glucose tolerance test.
Participants will be treated in a community-based practice setting and will receive detailed instruction on diet and glucose self-monitoring.
The patients will be randomly assigned to treatment with 4 mg daily of Rosiglitazone or placebo.
They will return to the clinic after 4 weeks to monitor changes in glucose levels, HbA1c and liver enzymes.
The drug dose will be increased as indicated to 8 mg daily and the patients will be reevaluated every 4 weeks.
The participants will all be admitted to the General Clinical Research Center at UT-Southwestern Medical Center at the end of 16 weeks to measure changes in the following primary endpoints: 1) insulin sensitivity, 2) lipid content of heart, liver, and skeletal muscle, 3) lipid oxidation.
Additional noninvasive HMRS measurements will be made to quantify the muscle lipid content and respiratory gas exchange will be used to assess lipid oxidation.
Following the GCRC admission, patients will switch to the alternative therapy for 16 additional weeks before the studies are repeated.
We expect Rosiglitazone to improve insulin sensitivity in association with reduced muscle lipid content that may arise either from increased lipid oxidation or enhanced storage of fat in adipose tissue.
Undersøgelsestype
Interventionel
Tilmelding (Faktiske)
24
Fase
- Fase 4
Kontakter og lokationer
Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.
Studiesteder
-
-
Texas
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Dallas, Texas, Forenede Stater, 75390
- University of Texas Southwestern Medical Center at Dallas
-
-
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
30 år til 65 år (Voksen, Ældre voksen)
Tager imod sunde frivillige
Ingen
Køn, der er berettiget til at studere
Alle
Beskrivelse
Inclusion Criteria:
- Age 30-65
- Fasting plasma glucose < 126 mg/dL or plasma glucose > 140 mg/dL and <200 mg/dL two hours after a challenge with 75 gm of glucose
Exclusion Criteria:
- Taking drugs known or suspected to affect intermediary metabolism (e.g. thyroid supplements, oral glucocorticoids, anabolic steroids or androgens, antidepressants, anorexic drugs, xanthine derivatives, sympathomimetics, beta-agonists)
- Taking any other investigational drugs within 30 days of starting the study
- Alcohol consumption more than 7 drinks per week
- Recreational drugs or IV drug abuse
- Acute or chronic liver diseases (SGOT >42 U/L, SGPT >48 U/L, GGT >45 U/L)
- Chronic renal insufficiency (serum creatinine >1.5 mg/dL)
- Uncontrolled hypertension (systolic/diastolic blood pressure >160/95mmHg)
- Anemia (hematocrit <35%)
- Congestive heart failure
- Metallic prostheses precluding the use of magnetic resonance imaging
- Premenopausal women without definitive measures to prevent pregnancy
Studieplan
Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Firedobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
---|---|
Aktiv komparator: Rosiglitazone
Subjects in this arm will be randomly assigned to treatment with Rosiglitazone 4mg daily.
After 4 weeks, we will assess changes in glucose levels and liver enzymes.
The dose will then be increased to Rosiglitazone 8mg daily (if indicated).
The patients will be reevaluated every 4 weeks, and at the end of 16 weeks, the participants will all be admitted to the research center at UTSW to measure changes in the following: 1) insulin sensitivity; 2) lipid content of heart, liver, & skeletal muscle; and 3) lipid oxidation using respiratory gas exchange.
The patients will then switch to the alternative therapy for 16 additional weeks before the studies are repeated.
|
Rosiglitazone 8mg PO daily for 16 weeks
Andre navne:
|
Placebo komparator: Placebo
Subjects in this arm will be randomly assigned to treatment with placebo.
After 4 weeks, we will assess changes in glucose levels and liver enzymes.
The patients will be reevaluated every 4 weeks, and at the end of 16 weeks, the participants will all be admitted to the research center at UTSW to measure changes in the following: 1) insulin sensitivity; 2) lipid content of heart, liver, & skeletal muscle; and 3) lipid oxidation using respiratory gas exchange.
The patients will then switch to the alternative therapy for 16 additional weeks before the studies are repeated.
|
Placebo 1 tablet PO daily for 16 weeks
|
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
---|---|
Insulin sensitivity
Tidsramme: 16 weeks
|
16 weeks
|
Sekundære resultatmål
Resultatmål |
Tidsramme |
---|---|
Intracellular lipid content in myocardium, liver and skeletal muscle
Tidsramme: 16 weeks
|
16 weeks
|
Lipid oxidation
Tidsramme: 16 weeks
|
16 weeks
|
Samarbejdspartnere og efterforskere
Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.
Samarbejdspartnere
Efterforskere
- Ledende efterforsker: Lidia S Szczepaniak, PhD, University of Texas, Southwestern Medical Center at Dallas
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. februar 2004
Primær færdiggørelse (Faktiske)
1. marts 2007
Studieafslutning (Faktiske)
1. februar 2008
Datoer for studieregistrering
Først indsendt
29. august 2008
Først indsendt, der opfyldte QC-kriterier
2. september 2008
Først opslået (Skøn)
3. september 2008
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Skøn)
3. september 2008
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
2. september 2008
Sidst verificeret
1. september 2008
Mere information
Begreber relateret til denne undersøgelse
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
- GSK CRT49653/250
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 .
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