Role of Glucagon In Glucose Control in Cystic Fibrosis Related Diabetes
24 de junho de 2020 atualizado por: Yale University
Role of Glucagon in Glucose Control in Cystic Fibrosis Related Diabetes
This project is designed to begin to characterize the abnormalities of glucagon secretion in subjects with cystic fibrosis related diabetes along the spectrum of glucose tolerance.
Cystic fibrosis patients with normal glucose tolerance as well as cystic fibrosis related diabetes as well as control subjects will undergo an oral glucose tolerance test, mixed meal tolerance test, and one step hypoglycemic clamp.
Cystic fibrosis patients will then return 12 months later to undergo repeat mixed meal tolerance test and hypoglycemic clamp test.
Visão geral do estudo
Status
Concluído
Intervenção / Tratamento
Descrição detalhada
This project is designed to begin to characterize the abnormalities of glucagon secretion in subjects with cystic fibrosis related diabetes along the spectrum of glucose tolerance. This will be a descriptive, cross-sectional and longitudinal cohort study in a sample of children and young adults with CF and a continuum of glucose tolerance compared to healthy age-matched controls.
Cystic fibrosis patients with normal glucose tolerance as well as cystic fibrosis related diabetes as well as control subjects will be admitted to the research unit on three separate occasions to undergo an oral glucose tolerance test, mixed meal tolerance test, and one step hypoglycemic clamp. Cystic fibrosis patients will then return 12 months later to undergo repeat mixed meal tolerance test and hypoglycemic clamp test.
Tipo de estudo
Intervencional
Inscrição (Real)
7
Estágio
- Fase inicial 1
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
-
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Connecticut
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New Haven, Connecticut, Estados Unidos, 06511
- Yale New Haven Hospital
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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
12 anos a 45 anos (Filho, Adulto)
Aceita Voluntários Saudáveis
Sim
Gêneros Elegíveis para o Estudo
Tudo
Descrição
Inclusion Criteria:
- Diagnosis of CF by clinical or genetic determination
- Normal glucose tolerance or CFRD
- Subjects routinely taking systemic or inhaled glucocorticoids on stable regimen are eligible
Exclusion Criteria:
- Subjects with active pulmonary infection requiring supplemental doses of corticosteroids
- Use of any oral diabetes medications
- Subjects who are pregnant/lactating
- Subjects with poor compliance with pancreatic enzyme replacement therapy
Control Subjects:
Approximately 10 control subjects who are matched for age, gender, are expected to be enrolled in the study. Non-CF subjects must be >12 years old, in good health and not taking any medications or have any medical problems the doctor feels would prevent the subject from completing the study and have BMI between 15-85% for age and gender. Control subjects whose fasting blood glucose is found to be >110 mg/dL will not be continued in the study.
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
- Finalidade Principal: Ciência básica
- Alocação: Não randomizado
- Modelo Intervencional: Atribuição Paralela
- Mascaramento: Nenhum (rótulo aberto)
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
|
Experimental: CF with Normal Glucose Tolerance
Individuals with CF without cystic fibrosis related diabetes
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Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Patients will drink 1.75 gm/kg glucose (Glucola) to a maximum of 75 gm.
Venous samples for glucose and c-peptide will be drawn from the IV at 0, 30, 60, 90 and 120 minutes.
Subjects will be instructed to eat at least 75 gm carbohydrates daily in the week prior to this test.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Subjects will consume 6 kcal/kg (6 ml/kg) Boost High Protein Nutritional Energy Drink (Mead-Johnson) over five minutes to a maximum of 360 ml.
Venous samples for glucose, glucagon, GLP-1, GIP, and c-peptide will be drawn at -10, 0, 15, 30, 60, 90, 120, 150, 180, 210, and 240 minutes.
All subjects with CF and adult (but not pediatric) controls will undergo one-step hypoglycemic clamp.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling and a second IV for infusion of insulin and dextrose.
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Experimental: Cystic Fibrosis Related Diabetes
Individuals with cystic fibrosis and cystic fibrosis related diabetes
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Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Patients will drink 1.75 gm/kg glucose (Glucola) to a maximum of 75 gm.
Venous samples for glucose and c-peptide will be drawn from the IV at 0, 30, 60, 90 and 120 minutes.
Subjects will be instructed to eat at least 75 gm carbohydrates daily in the week prior to this test.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Subjects will consume 6 kcal/kg (6 ml/kg) Boost High Protein Nutritional Energy Drink (Mead-Johnson) over five minutes to a maximum of 360 ml.
Venous samples for glucose, glucagon, GLP-1, GIP, and c-peptide will be drawn at -10, 0, 15, 30, 60, 90, 120, 150, 180, 210, and 240 minutes.
All subjects with CF and adult (but not pediatric) controls will undergo one-step hypoglycemic clamp.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling and a second IV for infusion of insulin and dextrose.
|
|
Comparador Ativo: Control
Age matched control subjects
|
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Patients will drink 1.75 gm/kg glucose (Glucola) to a maximum of 75 gm.
Venous samples for glucose and c-peptide will be drawn from the IV at 0, 30, 60, 90 and 120 minutes.
Subjects will be instructed to eat at least 75 gm carbohydrates daily in the week prior to this test.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling.
Subjects will consume 6 kcal/kg (6 ml/kg) Boost High Protein Nutritional Energy Drink (Mead-Johnson) over five minutes to a maximum of 360 ml.
Venous samples for glucose, glucagon, GLP-1, GIP, and c-peptide will be drawn at -10, 0, 15, 30, 60, 90, 120, 150, 180, 210, and 240 minutes.
All subjects with CF and adult (but not pediatric) controls will undergo one-step hypoglycemic clamp.
Subjects will be instructed to fast after midnight the night prior to the study.
Subjects will be admitted to the research unit on the morning of the test for placement of blood-drawing IV for frequent sampling and a second IV for infusion of insulin and dextrose.
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
Glucagon levels
Prazo: baseline
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Glucagon levels in response to to a mixed meal stimulus
|
baseline
|
Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
|
C-peptide levels
Prazo: baseline
|
C-peptide levels during oral glucose tolerance test and mixed meal tolerance test
|
baseline
|
|
C-peptide levels
Prazo: 12 months
|
C-peptide levels during oral glucose tolerance test and mixed meal tolerance test
|
12 months
|
|
Epinephrine levels
Prazo: baseline
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Epinephrine and norepinephrine levels during hypoglycemic clamp
|
baseline
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Epinephrine levels
Prazo: 12 months
|
Epinephrine and norepinephrine levels during hypoglycemic clamp
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12 months
|
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Norepinephrine levels
Prazo: baseline
|
norepinephrine levels during hypoglycemic clamp
|
baseline
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Norepinephrine levels
Prazo: 12 months
|
norepinephrine levels during hypoglycemic clamp
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12 months
|
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Hypoglycemia unawareness scores
Prazo: Baseline
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Hypoglycemia unawareness scores in subjects during hypoglycemic clamps as measured by the Clarke Hypoglycemia Awareness survey
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Baseline
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Hypoglycemia unawareness scores
Prazo: 12 months
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Hypoglycemia unawareness scores in subjects during hypoglycemic clamps as measured by the Clarke Hypoglycemia Awareness survey
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12 months
|
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GLP-1 and GIP levels
Prazo: Baseline
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GLP-1 and GIP levels in response to mixed meal stimulus
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Baseline
|
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GLP-1 and GIP levels
Prazo: 12 months
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GLP-1 and GIP levels in response to mixed meal stimulus
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12 months
|
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Glucagon levels
Prazo: 12 months
|
Glucagon levels in response to to a mixed meal stimulus and difference from baseline
|
12 months
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Colaboradores e Investigadores
É aqui que você encontrará pessoas e organizações envolvidas com este estudo.
Patrocinador
Investigadores
- Investigador principal: Bracha Goldsweig, MD, Yale University
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
1 de março de 2015
Conclusão Primária (Real)
22 de junho de 2017
Conclusão do estudo (Real)
22 de junho de 2017
Datas de inscrição no estudo
Enviado pela primeira vez
22 de janeiro de 2015
Enviado pela primeira vez que atendeu aos critérios de CQ
19 de março de 2015
Primeira postagem (Estimativa)
25 de março de 2015
Atualizações de registro de estudo
Última Atualização Postada (Real)
26 de junho de 2020
Última atualização enviada que atendeu aos critérios de controle de qualidade
24 de junho de 2020
Última verificação
1 de junho de 2020
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
- Doenças do aparelho digestivo
- Processos Patológicos
- Distúrbios do Metabolismo da Glicose
- Doenças Metabólicas
- Doenças Respiratórias
- Doenças pulmonares
- Doenças do Sistema Endócrino
- Lactente, Recém Nascido, Doenças
- Doenças Genéticas, Congênitas
- Doenças pancreáticas
- Fibrose
- Diabetes Mellitus
- Fibrose cística
- Efeitos Fisiológicos das Drogas
- Hipoglicemiantes
Outros números de identificação do estudo
- 1409014580
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 .