Denna sida har översatts automatiskt och översättningens korrekthet kan inte garanteras. Vänligen se engelsk version för en källtext.

Denervation of the REnal Artery in Metabolic Syndrome (DREAMS)

28 december 2014 uppdaterad av: Michiel Voskuil, MD, PhD, UMC Utrecht

Sympathetic Denervation of the Renal Artery for the Treatment of Obesity-related Hypertension and Insulin Resistance

The current prevalence of hypertension as part of the metabolic syndrome is substantial and is increasing with the rise of obesity worldwide. Chronic elevation of sympathetic nervous system (SNS) activity has been identified as a common and key factor in disease states as obesity-related hypertension (ORH). The renal sympathetic nerves are a major contributor to the complex pathophysiology of this elevated SNS activity. Percutaneous renal denervation (PRDN), the deliberate disruption of the nerves connecting the kidneys with the central nervous system, has been shown to be an effective means of modulating elevated SNS activity.

This current study is an observational feasibility study, with the aim to investigate the effect of renal denervation on changes in insulin resistance and blood pressure in patients with obesity related hypertension. The investigators will study different variables: a laboratorial set, a set of blood pressure measurements and a set of investigations in the vascular laboratory.

Hypothesis

  • The investigators hypothesize that renal denervation has a beneficial effect on insulin resistance.
  • The investigators hypothesize that there will be no complications related to the device or procedure.

Studieöversikt

Status

Avslutad

Intervention / Behandling

Detaljerad beskrivning

Objectives: The objectives of this study are: to compare changes in insulin resistance in patients with ORH after RDN; to evaluate the safety of PRDN in this patient group; to compare changes in blood pressure, laboratory parameters, arterial stiffness and SNS-activity after PRDN.

Study design: Prospective observational feasibility-study.

Study population: Patients with a high fasting glucose (fasting serum glucose ≥5.6 mmol/L(100 mg/dL)) and with an ambulatory systolic blood pressure >130mmHg.

Major endpoints: The effect of RDN on: insulin resistance, blood pressure and major adverse events.

Studietyp

Interventionell

Inskrivning (Faktisk)

29

Fas

  • Fas 3

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studieorter

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

18 år och äldre (Vuxen, Äldre vuxen)

Tar emot friska volontärer

Nej

Kön som är behöriga för studier

Allt

Beskrivning

Inclusion Criteria:

  • Patients should have a high fasting glucose (fasting serum glucose ≥5.6 mmol/L (≥100 mg/dL)), without the use of antidiabetic drugs at the time of inclusion AND should have a 24 hour ambulatory SBP >130 mmHg, without the use of antihypertensive drugs at the time of inclusion.
  • Patients should fulfil one or more other criteria to meet the definition of the metabolic syndrome.
  • Individual understands the study procedures, alternative treatments available, risks involved with the study and voluntarily agrees to participate by giving informed consent.
  • Individual is over 18 years of age on the day of signing informed consent.

Exclusion Criteria:

  • SBP >180 mmHg and/or DBP >110 mmHg during one or more screening measurements.
  • 24-hour ambulatory SBP >170 mmHg and/or 24-hour ambulatory DBP >100 mmHg at time of inclusion.
  • Individual is treated with more than one type of antihypertensive medication at time of inclusion.
  • Individual is treated with more than one type of drug for diabetes mellitus 2 at time of inclusion and/or the medication for DM type 2 can not be stopped.
  • Individual has a treatable secondary cause of hypertension.
  • Individual has renal artery anatomy that is ineligible for treatment.
  • Individual has an estimated glomerular filtration rate (eGFR) of <45mL/min/1.73m2, using the MDRD calculation.
  • Individual has type 1 diabetes mellitus.
  • Individual has experienced a myocardial infarction, unstable angina pectoris, or a cerebrovascular accident within 6 months of the screening visit, or has widespread atherosclerosis, with documented intravascular thrombosis or unstable plaques.
  • Individual has scheduled or planned surgery or cardiovascular intervention in the next 6 months.
  • Individual has hemodynamically significant valvular heart disease for which reduction of BP would be considered hazardous.
  • Individual has an implantable cardioverter defibrillator (ICD) or pacemaker whose settings cannot allow for RF energy delivery.
  • Individual has any serious medical condition, which in the opinion of the investigator, may adversely affect the safety and/or effectiveness of the participant or the study (i.e., patients with clinically significant peripheral vascular disease, abdominal aortic aneurysm, bleeding disorders such as thrombocytopenia, haemophilia, or significant anaemia).
  • Individual is pregnant, nursing or planning to be pregnant.
  • Individual has a known, unresolved history of drug use or alcohol dependency, lacks the ability to comprehend or follow instructions, or would be unlikely or unable to comply with study follow-up requirements.
  • Individual is currently enrolled in another investigational drug or device trial.
  • Individual is currently being treated with any of the following medications:

    • Drugs that cause salt retention (e.g., systemic corticosteroids and fludrocortisone)
    • Acenocoumarol or phenprocoumon that cannot be temporarily stopped for the procedure.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Behandling
  • Tilldelning: N/A
  • Interventionsmodell: Enskild gruppuppgift
  • Maskning: Ingen (Open Label)

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: Renal denervering
percutaneous selective renal sympathetic denervation with the use of the Symplicity Catheter system.
Andra namn:
  • Simplicity Katetersystem

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Difference in Insulin resistance before and 12 months after renal denervation
Tidsram: T=0, T=6 months, and t=12 months
To investigate the influence of percutaneous renal sympathetic denervation on insulin resistance. Hereby evaluating an Oral Glucose Tolerance Test before and after renal denervation
T=0, T=6 months, and t=12 months

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Difference in blood pressure before and after renal denervation
Tidsram: t=0, t=6 months, and t=12 months
t=0, t=6 months, and t=12 months
Safety
Tidsram: one year
Major adverse events, characterized by myocardial infarction, cerebrovascular accident or all-cause mortality.
one year
Fasting glucose before and after renal denervation
Tidsram: t=0 and t=12 months
t=0 and t=12 months
Change in Muscle sympathetic nerve activity (MSNA)after renal denervation
Tidsram: t=0 and t=6 months
t=0 and t=6 months

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Utredare

  • Huvudutredare: Michiel Voskuil, MD, PhD, UMC Utrecht
  • Huvudutredare: Willemien Verloop, MD, UMC Utrecht

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart

1 november 2011

Primärt slutförande (Faktisk)

1 september 2014

Avslutad studie (Faktisk)

1 september 2014

Studieregistreringsdatum

Först inskickad

25 oktober 2011

Först inskickad som uppfyllde QC-kriterierna

4 november 2011

Första postat (Uppskatta)

6 november 2011

Uppdateringar av studier

Senaste uppdatering publicerad (Uppskatta)

30 december 2014

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

28 december 2014

Senast verifierad

1 december 2014

Mer information

Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .

Kliniska prövningar på Insulinresistens

Kliniska prövningar på Renal denervation

3
Prenumerera