- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT01887119
Aldosterone Antagonism and Microvascular Function
Effects of Aldosterone Antagonism on Insulin-mediated Microvascular Function in Subjects With the Metabolic Syndrome
The prevalence of obesity and obesity-related complications is currently taking epidemic proportions. These complications increase the risk of type 2 diabetes and cardiovascular disease, which are important causes of morbidity and mortality worldwide.
It is important to gain insight in the mechanisms underlying obesity-related complications, because this may lead to the development of directed therapeutic strategies.
Currently, there is significant evidence that the cause of both insulin resistance and hypertension must be sought at the level of the microcirculation.
Over activity of the renin-angiotensin-aldosterone system is a potential cause of microvascular dysfunction. Angiotensin II was indeed found to be implicated in the pathogenesis of obesity-associated hypertension and insulin resistance, possibly through interference with the vascular effects of insulin.
Increased aldosterone levels have also been associated with resistant hypertension and insulin resistance, which is illustrated in patients with primary aldosteronism. Furthermore, aldosterone is known to exert several detrimental effects on the vasculature, some of which are offset by mineralocorticoid receptor antagonists.
In obese individuals, plasma aldosterone concentrations are increased as well. We hypothesize that increased aldosterone levels in adipose persons induce microvascular dysfunction, which contributes to the development of insulin resistance and hypertension, and mineralocorticoid receptor antagonism results in improved insulin sensitivity and decreased blood pressure by counteracting the adverse effects of aldosterone on the microvasculature.
Studieoversigt
Status
Intervention / Behandling
Undersøgelsestype
Tilmelding (Faktiske)
Fase
- Fase 4
Kontakter og lokationer
Studiesteder
-
-
Limburg
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Maastricht, Limburg, Holland, 6229 ER
- Maastricht University
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Age 40-65 years
- Caucasian
- Waist circumference > 102 cm (men)/> 88 cm (women)
- Triglycerides > 1.7 mmol/L
- High-normal blood pressure (office blood pressure: 130/85 - 139/89 mm Hg) or stage I hypertension (office blood pressure: 140/90 mm Hg - 159/99 mm Hg; 24h ABPM: 125/80 - 149/89 mm Hg)
Exclusion Criteria:
- Cardiovascular disease (stroke, coronary artery disease, peripheral vascular disease, congestive heart failure, cardiac shunts, cardiac surgery, pulmonary hypertension, cardiac arrhythmias, family history of cardiac arrhythmias or sudden cardiac death)
- Diabetes mellitus/impaired glucose metabolism (fasting glucose values > 5.6 mmol/L)
- Grade 2 or 3 hypertension (office blood pressure: > 160/100 mm Hg; ABPM > 150/90 mm Hg)
- Unstable or severe pulmonary disease
- Unstable or severe thyroid disorders
- Inflammatory diseases
- Alcohol use > 2 U/day (women)/> 3 U/day (men)
- Use of antihypertensive, lipid-lowering or glucose-lowering medications,
- Use of corticosteroids, medication known to inhibit or induce CYP3A4, lithium, and tricyclic antidepressants or antipsychotic medication, and regular use (weekly or several times a week) of NSAIDs
- Plasma potassium levels < 3.2 mmol/L or > 5 mmol/L
- eGFR < 60 mL/min
- Impairment of hepatic function
- Pregnancy or lactation
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Grundvidenskab
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Tredobbelt
Våben og indgreb
Deltagergruppe / Arm |
Intervention / Behandling |
|---|---|
|
Aktiv komparator: Eplerenone
Eplerenone 50 mg 1dd during four weeks
|
|
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Placebo komparator: Placebo
Eplerenone-matched placebo
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Eplerenone-matched placebo
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Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change in capillary recruitment (insulin-induced increase in microvascular blood volume in skeletal muscle) from baseline after 4 weeks of Eplerenone treatment or placebo
Tidsramme: Change from baseline after 4 weeks of treatment with either Eplerenone or placebo
|
The difference in microvascular blood volume in skeletal muscle of the forearm, which is assessed with contrast enhanced ultrasound, before and during a hyperinsulinemic, euglycemic clamp (performed to determine insulin sensitivity)
|
Change from baseline after 4 weeks of treatment with either Eplerenone or placebo
|
Samarbejdspartnere og efterforskere
Efterforskere
- Ledende efterforsker: prof. C.D.A. Stehouwer, MD, PhD, Maastricht University Medical Center
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Primær færdiggørelse (Faktiske)
Studieafslutning (Faktiske)
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Patologiske processer
- Glukosemetabolismeforstyrrelser
- Metaboliske sygdomme
- Sygdom
- Overernæring
- Ernæringsforstyrrelser
- Hyperinsulinisme
- Fedme
- Syndrom
- Metabolisk syndrom
- Insulin resistens
- Fedme, Abdominal
- Lægemidlers fysiologiske virkninger
- Antihypertensive midler
- Hormoner, hormonsubstitutter og hormonantagonister
- Natriuretiske midler
- Diuretika
- Hormonantagonister
- Mineralokortikoid-receptorantagonister
- Diuretika, Kaliumbesparende
- Eplerenon
Andre undersøgelses-id-numre
- 133031
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Kliniske forsøg med Forhøjet blodtryk
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VIVUS LLCIkke rekrutterer endnuPulmonal arteriel hypertension | Pulmonal arteriel hypertension (PAH) (WHO Group 1 PH) | Pulmonal arteriel hypertension (PAH) | Pulmonal arteriel hypertension WHO gruppe I | Pulmonal arteriel hypertension PAH
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BayerAfsluttet
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Franz Rischard, DOAcceleron Pharma, Inc., a wholly-owned subsidiary of Merck & Co., Inc...Ikke rekrutterer endnuPulmonal hypertension | Pulmonal arteriel hypertension (PAH)Forenede Stater
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Stanford UniversityNational Heart, Lung, and Blood Institute (NHLBI); University of MichiganIkke rekrutterer endnuPulmonal arteriel hypertension (PAH)Forenede Stater
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University of Sao Paulo General HospitalRekrutteringPulmonal arteriel hypertension (PAH)Brasilien
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University Hospital, BrestIkke rekrutterer endnuPulmonal arteriel hypertension (PAH)Frankrig
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Shanghai Zhongshan HospitalIkke rekrutterer endnuPulmonal arteriel hypertension (PAH)
Kliniske forsøg med Eplerenon
-
Darnitsa Pharmaceutical CompanyACDIMA BiocenterAfsluttetSunde emner | BioækvivalensJordan
-
Subha RamanBallou SkiesAfsluttetDuchennes muskeldystrofiForenede Stater
-
Semmelweis UniversityAfsluttetKronisk central serøs chorioretinopatiUngarn
-
Biolab Sanus FarmaceuticaTrukket tilbageSunde emner | Farmakokinetik | FasteBrasilien
-
Erasmus Medical CenterPfizer; Dutch Kidney FoundationUkendtForhøjet blodtryk | HyperaldosteronismeHolland
-
Daiichi Sankyo, Inc.AfsluttetEssentiel hypertensionJapan
-
McMaster UniversityCanadian Institutes of Health Research (CIHR)Afsluttet
-
University of Erlangen-Nürnberg Medical SchoolAfsluttetEssentiel hypertensionTyskland
-
Poznan University of Medical SciencesAfsluttetObstruktiv søvnapnø | Venstre ventrikulær hypertrofi | Hypertension, essentiel