Effects of Hormonal Anabolic Deficiency and Neurovascular Alterations on Mortality in Male Patients With Heart Failure (TestoHF)
Hormonal Anabolic Deficiency Associated With Neurovascular Alterations Predict Poor Prognosis in Male Patients With Heart Failure
Studie Overzicht
Toestand
Toestand
Conditie
Conditie
Interventie / Behandeling
Interventie / Behandeling
- Diagnostische toets: Cardiopulmonary exercise test
- Diagnostische toets: Muscle Sympathetic Nerve Activity
- Diagnostische toets: Dual-energy X-ray absorptiometry
- Diagnostische toets: Venous occlusion plethysmography
- Diagnostische toets: Blood sample collection
- Diagnostische toets: Dynamometers for Handgrip Strength
Gedetailleerde beschrijving
One hundred and fifty six patients have been enrolled so far. Methods were as described below:
- Muscle sympathetic nerve activity (MSNA) was directly recorded from the peroneal nerve using the microneurography technique ;
- All patients underwent symptom-limited cardiopulmonary exercise test performed on a cycle ergometer, using a ramp protocol with workload increments of 5 or 10 Watts per minute;
- Body composition measurements were performed using dual-energy X-ray absorptiometry (DXA);
- Muscle strength was assessed by handgrip dynamometer using the mean value of three attempts;
- Blood samples were drawn in the morning after 12h overnight fasting. The laboratory tests included B-type natriuretic peptide (BNP; pg/mL) plasma level, serum sodium (mEq/L), serum potassium (mEq/L), creatinine (mg/dL), haemoglobin level (g/dL), high-sensitivity C-reactive protein (CRP; mg/L), lipid profile (triglyceride, total cholesterol, high-density lipoprotein, and low-density lipoprotein; mg/dL), and fasting glucose (mg/dL). Blood sample to assess hormone plasma levels were also drawn at the same time: total testosterone (TT), free testosterone (FT), sex hormone binding globulin (SHBG), dehydroepiandrosterone sulfate (DHEAS), luteinizing hormone (LH), follicle-stimulating hormone (FSH), thyroid stimulating hormone (TSH) and insulin-like growth factor 1 (IGF1).
Studietype
Studietype
Inschrijving (Werkelijk)
Inschrijving
Contacten en locaties
Studie Locaties
-
-
SP
-
Sao Paulo, SP, Brazilië, 05403-900
- Instituto do Coração do Hospital da Clínicas da Universidade de Sao Paulo
-
-
Deelname Criteria
Geschiktheidscriteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
Accepteert gezonde vrijwilligers
Geslachten die in aanmerking komen voor studie
Bemonsteringsmethode
Studie Bevolking
Beschrijving
Inclusion Criteria:
- age between 18 and 65 years old;
- at least1 year of diagnosed HF;
- left ventricular ejection fraction (LVEF) lower than 40% measured by echocardiography;
- non-ischaemic and ischaemic aetiologies;
- compensated HF with optimal medication for at least 3 months prior the study;
- New York Heart Association (NYHA) class of I to IV.
Exclusion Criteria:
- patients with autonomic diabetic neuropathy;
- patients with chronic renal failure with haemodialysis;
- heart transplantation;
- presence of pacemaker;
- patients with muscular dystrophy (i.e. Duchenne muscular dystrophy);
- patients submitted to any hormonal treatment;
- history of cancer;
- ongoing infection;
- myocardial infarction with percutaneous coronary intervention or revascularization 6 months prior to the study entry.
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Observatiemodellen: Cohort
- Tijdsperspectieven: Prospectief
Aantal groepen / cohorten
Cohorten en interventies
Groep / CohortGroep / Cohort |
Interventie / BehandelingInterventie / Behandeling |
|---|---|
|
Low testosterone
Patients with HF and testosterone deficiency.
|
Oxygen consumption (VO2) and carbon dioxide output (VCO2) were measured by means of gas exchange on a breath-by-breath basis.
The patients were initially monitored for 2 minutes at rest when seated on the ergometer, after that they were instructed to pedal at a pace of 60-70 rpm and the completion of the test occurred when, in spite of verbal encouragement, the patient reached maximal volitional fatigue.
Multiunit post-ganglionic muscle sympathetic nerve recordings were made using a tungsten microelectrode placed in the peroneal nerve near the fibular head.
Nerve signals were amplified by a factor of 50,000 to 100,000 and band-pass filtered (700 to 2000 Hz).
For recording and analysis, nerve activity was rectified and integrated (time constant 0.1 seconds) to obtain a mean voltage display of sympathetic nerve activity.
Dual-energy X-ray absorptiometry (DXA) scan was used to measure total lean mass, body fat and bone mineral content.
Venous occlusion plethysmography was used to assess non-invasively blood flow.
Blood samples were drawn in the morning after 12h overnight fasting.
Muscle strength was assessed by handgrip dynamometer using the mean value of three attempts.
|
|
Normal testosterone
Patients with HF and normal plasma levels of testosterone.
|
Oxygen consumption (VO2) and carbon dioxide output (VCO2) were measured by means of gas exchange on a breath-by-breath basis.
The patients were initially monitored for 2 minutes at rest when seated on the ergometer, after that they were instructed to pedal at a pace of 60-70 rpm and the completion of the test occurred when, in spite of verbal encouragement, the patient reached maximal volitional fatigue.
Multiunit post-ganglionic muscle sympathetic nerve recordings were made using a tungsten microelectrode placed in the peroneal nerve near the fibular head.
Nerve signals were amplified by a factor of 50,000 to 100,000 and band-pass filtered (700 to 2000 Hz).
For recording and analysis, nerve activity was rectified and integrated (time constant 0.1 seconds) to obtain a mean voltage display of sympathetic nerve activity.
Dual-energy X-ray absorptiometry (DXA) scan was used to measure total lean mass, body fat and bone mineral content.
Venous occlusion plethysmography was used to assess non-invasively blood flow.
Blood samples were drawn in the morning after 12h overnight fasting.
Muscle strength was assessed by handgrip dynamometer using the mean value of three attempts.
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Impact of testosterone deficiency on mortality
Tijdsspanne: 2 years
|
Blood sample was collected in the morning (between 8:00-10:00 a.m.) after 12 hours fasting.
|
2 years
|
|
Impact of muscle sympathetic nerve activity on mortality
Tijdsspanne: 2 years
|
Microneurography was used to assess the sympathetic nervous system.
|
2 years
|
|
Impact of neurovascular alterations on mortality
Tijdsspanne: 2 years
|
Venous occlusion pletysmography was used to evaluate vasodilation.
|
2 years
|
Secundaire uitkomstmaten
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Impact of testosterone deficiency on body composition
Tijdsspanne: 2 years
|
Body composition measurements were performed using dual-energy X-ray absorptiometry.
|
2 years
|
|
Impact of testosterone deficiency on functional capacity
Tijdsspanne: 2 years
|
All patients underwent symptom-limited cardiopulmonary exercise test to measure functional capacity.
|
2 years
|
|
Impact of testosterone deficiency on strength
Tijdsspanne: 2 years
|
Muscle strength was assessed by handgrip dynamometer using the mean value of three attempts.
|
2 years
|
Medewerkers en onderzoekers
Sponsor
Sponsor
Medewerkers
Medewerkers
Onderzoekers
Onderzoekers
- Hoofdonderzoeker: Maria Janieire de Nazaré Nunes Alves, PhD, InCor Heart Institute
Studie record data
Bestudeer belangrijke data
Studie start (Werkelijk)
Studie start
Primaire voltooiing (Werkelijk)
Primaire voltooiing
Studie voltooiing (Werkelijk)
Studie voltooiing
Studieregistratiedata
Eerst ingediend
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Eerst geplaatst
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update geplaatst
Laatste update ingediend die voldeed aan QC-criteria
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
Andere studie-ID-nummers
- AnabolicHormonesPrognosis
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .