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
Panoramica dello studio
Stato
Stato
Condizioni
Condizioni
Intervento / Trattamento
Intervento / Trattamento
Descrizione dettagliata
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).
Tipo di studio
Tipo di studio
Iscrizione (Effettivo)
Iscrizione
Contatti e Sedi
Luoghi di studio
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SP
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Sao Paulo, SP, Brasile, 05403-900
- Instituto do Coração do Hospital da Clínicas da Universidade de Sao Paulo
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Criteri di partecipazione
Criteri di ammissibilità
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Descrizione
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.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Modelli osservazionali: Coorte
- Prospettive temporali: Prospettiva
Numero di gruppi/coorti
Coorti e interventi
Gruppo / CoorteGruppo / Coorte |
Intervento / TrattamentoIntervento / Trattamento |
|---|---|
|
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.
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Impact of testosterone deficiency on mortality
Lasso di tempo: 2 years
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Blood sample was collected in the morning (between 8:00-10:00 a.m.) after 12 hours fasting.
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2 years
|
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Impact of muscle sympathetic nerve activity on mortality
Lasso di tempo: 2 years
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Microneurography was used to assess the sympathetic nervous system.
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2 years
|
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Impact of neurovascular alterations on mortality
Lasso di tempo: 2 years
|
Venous occlusion pletysmography was used to evaluate vasodilation.
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2 years
|
Misure di risultato secondarie
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Impact of testosterone deficiency on body composition
Lasso di tempo: 2 years
|
Body composition measurements were performed using dual-energy X-ray absorptiometry.
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2 years
|
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Impact of testosterone deficiency on functional capacity
Lasso di tempo: 2 years
|
All patients underwent symptom-limited cardiopulmonary exercise test to measure functional capacity.
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2 years
|
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Impact of testosterone deficiency on strength
Lasso di tempo: 2 years
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Muscle strength was assessed by handgrip dynamometer using the mean value of three attempts.
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2 years
|
Collaboratori e investigatori
Sponsor
Sponsor
Collaboratori
Collaboratori
Investigatori
Investigatori
- Investigatore principale: Maria Janieire de Nazaré Nunes Alves, PhD, InCor Heart Institute
Studiare le date dei record
Studia le date principali
Inizio studio (Effettivo)
Inizio studio
Completamento primario (Effettivo)
Completamento primario
Completamento dello studio (Effettivo)
Completamento dello studio
Date di iscrizione allo studio
Primo inviato
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
Primo Inserito
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento pubblicato
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
Altri numeri di identificazione dello studio
- AnabolicHormonesPrognosis
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