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Effectiveness of a Walking Program Modulating Cardioreparative Factors in Heart Failure (EPCCHFWalk)

30. marts 2017 opdateret af: Vanderbilt University Medical Center
The incidence of heart failure grows as the population continues to age. Heart failure incidence approaches 10 per 1,000 persons after the age of 65. Although pharmacotherapy improves the treatment of heart failure it remains insufficient in preventing the progression of this debilitating disease. Cell based therapy has gained great strides over the last decade, launching cellular therapy into the mix of artillery for the treatment of chronic heart failure and coronary disease. While early pre-clinical work demonstrates that stem cell based therapy improves heart failure the exact mechanism in which these endothelial progenitor cells (EPC's) are recruited from the bone marrow, proliferate under the mediation of growth factors, and migrate to the injured tissues endogenously still remains obscured. Therefore in order for clinicians and scientist to impact heart failure treatment, a greater understanding of the physiological changes in EPC's and other modulators of cardioreparative process need further investigation.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Heart failure remains a devastating progressive chronic disease in which pharmacotherapy is not often sufficient. Although cell based therapy is gaining publicity in the treatment of coronary artery disease and heart failure. Determining how endothelial progenitor cells are recruited, proliferate, and home to injured tissue is an important area of investigation. Equally important is determining factors which improve EPC stimulation and efficiency such as realistic levels of exercise and the modulation of various cardioreparative factors (VEGF, NRG-1, and SDF-1) within heart failure patients. Since the endogenous repair mechanism is down regulated in heart failure patients such efforts may uncover ways to tip the balance in heart failure back to normal reparative maintenance.

Undersøgelsestype

Observationel

Tilmelding (Faktiske)

9

Kontakter og lokationer

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

Studiesteder

  • Forenede Stater
    • Tennessee
      • Nashville, Tennessee, Forenede Stater, 37232-8802
        • Vanderbilt Heart and Vascular Institute

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

Prøveudtagningsmetode

Sandsynlighedsprøve

Studiebefolkning

Cardiac Heart Failure Patients

Beskrivelse

Inclusion criteria:

  1. Subjects 30-65 years old.
  2. Subjects able to give Informed Consent.
  3. Subjects who will give permission for collection of clinical and demographic data from the electronic medical records.

  4. Subjects with symptomatic ischemic or non-ischemic heart failure in a stable condition with New York Heart Association class II-III for at least the last 3 months before study enrollment.

    • Left ventricular ejection fraction (LVEF) < 40%.
    • Peak volume of oxygen utilization (peak VO2) of < 25 ml/kg/min.
  5. Patient on a stable dose of statin or who can be initiated on statin therapy.
  6. Subjects with ischemic cardiomyopathy must have had either a negative stress test within the last 6 months or a cardiac catheterization within the last year confirming stable disease.

Exclusion criteria:

  1. Subjects with myocardial infarction or unstable angina within the last six months.
  2. Subjects with symptomatic or severe aortic stenosis.
  3. Subjects with severe HTN (SBP > 180) or hypotension (SBP < 100).
  4. Subjects who are pregnant.
  5. Subjects who have bone marrow suppression.
  6. Subjects with exercise limiting peripheral arterial disease.
  7. Subjects with history of ventricular tachycardia without an implantable defibrillator
  8. Subjects with decompensated diabetes (HgA1c >10).
  9. Subjects with orthopedic limitations.
  10. Subjects with any other clinical condition precluding regular participation in walking exercise regimen.
  11. Subjects who already participate in regular physical exercise regimen for greater than 30 minutes a day 5 days per week.

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

Kohorter og interventioner

Gruppe / kohorte
Intervention / Behandling
Walking Exercise Group
Walking Exercise Group versus Control Group
Andet: Physical Fitness
Does intensity of aerobic walking exercise modify cardiac reparative factors
Andre navne:
  • Spørgeskemaer om livskvalitet
Biologisk: Walking Exercise Group
Walking Group will increase intensity, duration, and steps of walking per week.
Andre navne:
  • Spørgeskemaer om livskvalitet

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Tidsramme
endothelial progenitor cells
Tidsramme: 12 Weeks
12 Weeks

Sekundære resultatmål

Resultatmål
Tidsramme
exercise
Tidsramme: 12 Months
12 Months

Samarbejdspartnere og efterforskere

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

Sponsor

Vanderbilt University Medical Center

Efterforskere

  • Studieleder: Douglas B Saywer, MD, PhD, Vanderbilt Heart and Vascular 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 (Faktiske)

1. juli 2009

Primær færdiggørelse (Faktiske)

1. januar 2014

Studieafslutning (Faktiske)

1. januar 2014

Datoer for studieregistrering

Først indsendt

9. juli 2009

Først indsendt, der opfyldte QC-kriterier

10. juli 2009

Først opslået (Skøn)

13. juli 2009

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

4. april 2017

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

30. marts 2017

Sidst verificeret

1. marts 2017

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • Vanderbilt_University

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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