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Effects of Hormonal Anabolic Deficiency and Neurovascular Alterations on Mortality in Male Patients With Heart Failure (TestoHF)

29 de abril de 2021 atualizado por: Maria Janieire de Nazaré Nunes Alves, University of Sao Paulo General Hospital

Hormonal Anabolic Deficiency Associated With Neurovascular Alterations Predict Poor Prognosis in Male Patients With Heart Failure

Heart failure (HF) has been associated with chronic deleterious effects on skeletal muscle, endocrine system, vasculature and sympathetic nervous system. These alterations have a significant impact on quality of life, leading to a reduction in functional capacity and limited symptoms, which involve dyspnea and fatigue. The investigators tested the hypothesis that hormonal anabolic deficiency associated with neurovascular alterations may worsen the prognosis of patients with heart failure.

Visão geral do estudo

Status

Concluído

Condições

Intervenção / Tratamento

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

Observacional

Inscrição (Real)

169

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

  • Brasil
    • SP
      • Sao Paulo, SP, Brasil, 05403-900
        • Instituto do Coração do Hospital da Clínicas da Universidade de Sao Paulo

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos a 65 anos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Macho

Método de amostragem

Amostra de Probabilidade

População do estudo

Patients with heart failure recruited at Clinical Unit of Myocardiopathy at General Hospital of the University of São Paulo Medical School (UNCAR/HC-FMUSP).

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

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Modelos de observação: Coorte
  • Perspectivas de Tempo: Prospectivo

Coortes e Intervenções

Grupo / Coorte
Intervenção / Tratamento
Low testosterone

Patients with HF and testosterone deficiency.

  • Cardiopulmonary exercise test
  • Muscle Sympathetic Nerve Activity
  • Dual-energy X-ray absorptiometry
  • Venous occlusion plethysmography
  • Blood sample collection
  • Dynamometers for Handgrip Strength
Teste de diagnostico: Cardiopulmonary exercise test
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.
Teste de diagnostico: Muscle Sympathetic Nerve Activity
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.
Teste de diagnostico: Dual-energy X-ray absorptiometry
Dual-energy X-ray absorptiometry (DXA) scan was used to measure total lean mass, body fat and bone mineral content.
Teste de diagnostico: Venous occlusion plethysmography
Venous occlusion plethysmography was used to assess non-invasively blood flow.
Teste de diagnostico: Blood sample collection
Blood samples were drawn in the morning after 12h overnight fasting.
Teste de diagnostico: Dynamometers for Handgrip Strength
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.

  • Cardiopulmonary exercise test
  • Muscle Sympathetic Nerve Activity
  • Dual-energy X-ray absorptiometry
  • Venous occlusion plethysmography
  • Blood sample collection
  • Dynamometers for Handgrip Strength
Teste de diagnostico: Cardiopulmonary exercise test
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.
Teste de diagnostico: Muscle Sympathetic Nerve Activity
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.
Teste de diagnostico: Dual-energy X-ray absorptiometry
Dual-energy X-ray absorptiometry (DXA) scan was used to measure total lean mass, body fat and bone mineral content.
Teste de diagnostico: Venous occlusion plethysmography
Venous occlusion plethysmography was used to assess non-invasively blood flow.
Teste de diagnostico: Blood sample collection
Blood samples were drawn in the morning after 12h overnight fasting.
Teste de diagnostico: Dynamometers for Handgrip Strength
Muscle strength was assessed by handgrip dynamometer using the mean value of three attempts.

O que o estudo está medindo?

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

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

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

University of Sao Paulo General Hospital

Colaboradores

Fundação de Amparo à Pesquisa do Estado de São Paulo

Investigadores

  • Investigador principal: Maria Janieire de Nazaré Nunes Alves, PhD, InCor Heart Institute

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

30 de junho de 2016

Conclusão Primária (Real)

23 de março de 2020

Conclusão do estudo (Real)

30 de dezembro de 2020

Datas de inscrição no estudo

Enviado pela primeira vez

1 de março de 2018

Enviado pela primeira vez que atendeu aos critérios de CQ

9 de março de 2018

Primeira postagem (Real)

13 de março de 2018

Atualizações de registro de estudo

Última Atualização Postada (Real)

3 de maio de 2021

Última atualização enviada que atendeu aos critérios de controle de qualidade

29 de abril de 2021

Última verificação

1 de abril de 2021

Mais Informações

Termos relacionados a este estudo

Palavras-chave

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • AnabolicHormonesPrognosis

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

Não

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

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 .

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