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
Visão geral do estudo
Status
Status
Condições
Condições
Intervenção / Tratamento
Intervenção / Tratamento
- Teste de diagnostico: Cardiopulmonary exercise test
- Teste de diagnostico: Muscle Sympathetic Nerve Activity
- Teste de diagnostico: Dual-energy X-ray absorptiometry
- Teste de diagnostico: Venous occlusion plethysmography
- Teste de diagnostico: Blood sample collection
- Teste de diagnostico: Dynamometers for Handgrip Strength
Descrição detalhada
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 de estudo
Tipo de estudo
Inscrição (Real)
Inscrição
Contactos e Locais
Locais de estudo
-
-
SP
-
Sao Paulo, SP, Brasil, 05403-900
- Instituto do Coração do Hospital da Clínicas da Universidade de Sao Paulo
-
-
Critérios de participação
Critérios de elegibilidade
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Método de amostragem
População do estudo
Descrição
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.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Modelos de observação: Coorte
- Perspectivas de Tempo: Prospectivo
Número de grupos/coortes
Coortes e Intervenções
Grupo / CoorteGrupo / Coorte |
Intervenção / TratamentoIntervenção / Tratamento |
|---|---|
|
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.
|
O que o estudo está medindo?
Medidas de resultados primários
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Impact of testosterone deficiency on mortality
Prazo: 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
Prazo: 2 years
|
Microneurography was used to assess the sympathetic nervous system.
|
2 years
|
|
Impact of neurovascular alterations on mortality
Prazo: 2 years
|
Venous occlusion pletysmography was used to evaluate vasodilation.
|
2 years
|
Medidas de resultados secundários
Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Impact of testosterone deficiency on body composition
Prazo: 2 years
|
Body composition measurements were performed using dual-energy X-ray absorptiometry.
|
2 years
|
|
Impact of testosterone deficiency on functional capacity
Prazo: 2 years
|
All patients underwent symptom-limited cardiopulmonary exercise test to measure functional capacity.
|
2 years
|
|
Impact of testosterone deficiency on strength
Prazo: 2 years
|
Muscle strength was assessed by handgrip dynamometer using the mean value of three attempts.
|
2 years
|
Colaboradores e Investigadores
Patrocinador
Patrocinador
Colaboradores
Colaboradores
Investigadores
Investigadores
- Investigador principal: Maria Janieire de Nazaré Nunes Alves, PhD, InCor Heart Institute
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo (Real)
Início do estudo
Conclusão Primária (Real)
Conclusão Primária
Conclusão do estudo (Real)
Conclusão do estudo
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Real)
Primeira postagem
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última Atualização Postada
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Última verificação
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
Outros números de identificação do estudo
- AnabolicHormonesPrognosis
Plano para dados de participantes individuais (IPD)
Planeja compartilhar dados de participantes individuais (IPD)?
Informações sobre medicamentos e dispositivos, documentos de estudo
Estuda um medicamento regulamentado pela FDA dos EUA
Estuda um produto de dispositivo regulamentado pela FDA dos EUA
Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .