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The Effect of Pioglitazone on Neointima Volume and Characteristics Observed by Optical Coherence Tomography (OCT)

1. marts 2014 opdateret af: Soon Jun Hong, Korea University Anam Hospital
Pioglitazone is used in the treatment of diabetic patients. Thiazolidinediones increase insulin sensitivity and show favorable effect on blood glucose levels and lipid profiles. The effect of pioglitazone on atherosclerotic and inflammatory markers has not been compared in prospective manner after everolimus-eluting stent implantation by OCT. The purpose of this prospective, randomized, open-label trial is to compare the effect of pioglitazone on neointima volume and atherosclerosis progression in type 2 diabetic patients by using OCT. Moreover, changes in neointima characteristics could be analyzed along with the changes in miRNA-21, -126, -143, -145. Major adverse cardiovascular events such as non-fatal MI, death, stroke, and TLR could be compared.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

People with diabetes mellitus are more prone to coronary heart disease, stroke, and peripheral vascular disease, and diabetes mellitus has been regarded as an independent risk factor for the progression of coronary artery disease. Several studies have been reported that diabetes increased the risk of cardiovascular mortality in both men and women. With the introduction of drug-eluting stents (DESs), the angiographic rates of restenosis at later months have reduced dramatically in several studies. However, even with DESs, diabetic patients showed increased rates of restenosis and late loss index compared with nondiabetic patients. Diabetes has been considered to be a predictor of poor prognosis after percutaneous coronary intervention with drug-eluting stents. Long-term clinical and angiographic outcomes after percutaneous coronary intervention (PCI) with drug-metal stents (DESs) have been demonstrated to be worse in diabetic patients compared with nondiabetic patients. In the era of DESs, no study has demonstrated the clinical and angiographic outcomes in diabetic patients after DES implantation by using optical coherence tomography (OCT).

Various microRNAs such as miRNA-21, -126, -143, -145 are involved in the restenosis and atherosclerosis progression (Figure 1). Changes in these miRNAs from baseline to 9 months after randomization have never been studied, and the effects of pioglitazone in correlation with the changes in various miRNAs could be utilized in clinical practices. Comparison of pioglitazone and placebo on 9 months follow-up neointima volume and neointima characteristics by optical coherence tomography (OCT) will be conducted.

Undersøgelsestype

Interventionel

Tilmelding (Forventet)

94

Fase

  • Fase 4

Kontakter og lokationer

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

Studiesteder

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 80 år (Voksen, Ældre voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Age: 18 years and above
  • Gender eligible for study: both
  • Diabetic patients either previously diagnosed or newly found diabetes.
  • Fasting blood glucose ≥ 126 mg/dl or PP2 blood glucose ≥ 200 mg/dl for newly found diabetes.
  • Patients with significant coronary artery disease (diameter stenosis > 70%) requiring stent implantation.
  • Patients with informed consent.

Exclusion Criteria:

  • Diabetic patients with the use of thiazolidinediones
  • ACE inhibitor or ARB not allowed during the study period
  • Previous history of PCI or bypass surgery
  • Patients with any contraindications to the treatment of thiazolidinediones
  • Pregnant or lactating patients
  • Chronic alcohol or drug abuse
  • Hepatic dysfunction
  • Renal dysfunction
  • Heart failure (EF < 50%)
  • Expected life expectancy of < 1 year

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: Parallel tildeling
  • Maskning: Enkelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Pioglitazone, Placebo
Medicin: Pioglitazone
Pioglitazone 15-30mg, once daily for 9 months

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
9 months follow-up neointima volume and neointima characteristics
Tidsramme: 9 months follow-up
Comparison of pioglitazone and placebo on 9 months follow-up neointima volume and neointima characteristics by optical coherence tomography (OCT). Moreover, changes in miRNA-21.-126, -143, -145 from baseline to 9 months will be compared.
9 months follow-up

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
major adverse cardiovascular events
Tidsramme: 9 months follow-up
Comparison of pioglitazone and placebo on 9 months follow-up atheroma characteristics. Moreover, major adverse cardiovascular events such as non-fatal MI, death, stroke, and TLR will be compared.
9 months follow-up

Samarbejdspartnere og efterforskere

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Sponsor

Korea University Anam Hospital

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 2011

Primær færdiggørelse (Faktiske)

1. februar 2013

Studieafslutning (Faktiske)

1. august 2013

Datoer for studieregistrering

Først indsendt

5. april 2011

Først indsendt, der opfyldte QC-kriterier

7. april 2011

Først opslået (Skøn)

8. april 2011

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Skøn)

4. marts 2014

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

1. marts 2014

Sidst verificeret

1. marts 2014

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • PRAISE II

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 Diabetic Stable Angina

Kliniske forsøg med Pioglitazone

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