Influências dos betabloqueadores nas respostas inflamatórias e neurais ao estresse
2 de novembro de 2026 atualizado por: University of North Carolina, Chapel Hill
The purpose of this study is to map the neural and molecular mechanisms underlying psychological stress-induced changes in inflammation which could reveal new targets for intervention to reduce the risk of cardiovascular disease.
Visão geral do estudo
Status
Recrutamento
Condições
Intervenção / Tratamento
Descrição detalhada
The proposed work will conduct a mechanistic clinical trial utilizing the non-selective beta-adrenergic receptor blocker propranolol to examine the role of beta-adrenergic signaling in shaping neural and inflammatory responses to stress. The investigators will focus on beta-adrenergic signaling given seminal pre-clinical work showing that this molecular pathway is an important driver of stress-related increases in inflammation, and initial human neuroimaging work showing that beta-blockade leads to changes in neural responses to negative stimuli. Here, the investigators will bring these two previously disparate lines of work together to determine how experimentally blocking one critical stress-signaling pathway shapes neural activity and inflammatory responses to stress. In doing so, the investigators will be advancing knowledge by mapping mechanisms (i.e., beta-adrenergic signaling), offering methodological improvements (i.e., moving beyond correlation to using pharmacological manipulations to provide causal evidence), and identifying intervention targets (i.e., the neurocognitive systems that shift activity/connectivity in response to beta-blockade). In sum, the work proposed herein is significant because it will address the mechanisms by which one critical risk factor, psychological stress, may ultimately lead to cardiovascular disease via inflammation. The proposed study also offers significant methodological improvements over past work by using neuroimaging to identify neurocognitive pathways, and pharmacology to provide causal experimental evidence to move us beyond correlation. Finally, this project is significant because it could provide insight into novel targets for future interventions.
Tipo de estudo
Intervencional
Inscrição (Estimado)
120
Estágio
- Fase 4
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.
Contato de estudo
- Nome: Keely A Muscatell, PhD
- Número de telefone: 9164957661
- E-mail: kmuscatell@unc.edu
Estude backup de contato
- Nome: Jonathan Bunting, BS
- Número de telefone: 9164957661
- E-mail: jonb@unc.edu
Locais de estudo
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North Carolina
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Chapel Hill, North Carolina, Estados Unidos, 27514
- Recrutamento
- Social Neuroscience and Health Laboratory
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Contato:
- Keely A Muscatell, PhD
- Número de telefone: 916-495-7661
- E-mail: kmuscatell@unc.edu
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Subinvestigador:
- Jessica R Cohen, PhD
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Subinvestigador:
- Kristen A Lindquist, PhD
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Subinvestigador:
- Zev Nakamura, MD
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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
18 anos a 30 anos (Adulto)
Aceita Voluntários Saudáveis
Sim
Gêneros Elegíveis para o Estudo
Tudo
Descrição
Inclusion Criteria:
- Ages 18-30 years
- Right-handed
- Fluent in English reading, writing, and speaking at least at a 10th grade level
- Body mass index (BMI) less than or equal to 35 kg/m^2
Exclusion Criteria:
Assessed as screening, reassessed at Session I:
- Non-removeable metal devices/implants/objects in the body
- Severe claustrophobia (assessed by self-report)
- Currently pregnant
- Left-handed
- Body mass index (BMI) greater than 35 kg/m^2
- History of fainting spells or any heart condition
- History of or present low resting heart rate (< 60 BPM) and/or low blood pressure (systolic blood pressure < 80mmHg)
- Self-reported physical illnesses: diabetes, cardiovascular diseases, high blood pressure, inflammatory bowel diseases, rheumatoid arthritis, asthma, autoimmune disease, Crohn's disease, ulcerative colitis, lupus
- Any self-reported diagnosed mental illness
- Current use of prescription medications (except hormonal contraceptives)
- Current or recent regular nicotine/tobacco use (cigarettes, e-cigarettes, vape, chewing tobacco, nicotine gum)
- Current regular (daily or almost daily) recreational drug use = 4 or more times per week
Instructed against during Session I, reassessed at Session II:
- Received any vaccine within the past two weeks
- Severe sleep disturbance (3-4 hours of sleep loss) the night before Session II
- Vigorous physical activity on the day of Session II
- Acute illness or allergy symptoms on the day of Session II
- Usage of over-the-counter medications on the day of Session II
- Usage of recreational drugs within 48 hours of Session II
- Usage of alcohol on the day of Session II
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: Randomizado
- Modelo Intervencional: Atribuição Paralela
- Mascaramento: Triplo
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
|---|---|
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Experimental: Propranolol
Propranolol tablet, 40mg, one-time, orally |
Tablet encapsulated to visually look identical to the placebo.
Outros nomes:
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Comparador de Placebo: Placebo
Encapsulated placebo tablet |
Encapsulated sugar pill to visually look identical to the experimental condition.
Outros nomes:
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O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Change in levels of pro-inflammatory cytokine interleukin-6 in response to social stress
Prazo: Post-drug baseline to 90-minutes post-stress task (T-90)
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Blood plasma will be analyzed for levels of pro-inflammatory cytokine interleukin-6 (IL-6), from baseline, a baseline after drug administration, a sample 90-minutes after the stress task (T-90) measured in pg/mL. The timeline was determined on meta-analytic work showing changes in the inflammatory cytokine IL-6 are largest at 90 minutes post-stress. |
Post-drug baseline to 90-minutes post-stress task (T-90)
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Change in levels of inflammatory gene expression in response to social stress
Prazo: Post-drug baseline to 30-minutes post-stress task (T-30)
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Whole blood samples will be collected in PaxGene tubes and analyzed for changes in inflammatory gene expression from baseline, a baseline after drug administration, and 30-minutes after the stress task (T-30), measured in gene transcript counts per million. The timeline is based on the Principal Investigator's work showing that changes in pro-inflammatory gene expression are observed 30-minutes post-stress. |
Post-drug baseline to 30-minutes post-stress task (T-30)
|
Colaboradores e Investigadores
É aqui que você encontrará pessoas e organizações envolvidas com este estudo.
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Keely Muscatell, PhD, University of North Carolina, Chapel Hill
Publicações e links úteis
A pessoa responsável por inserir informações sobre o estudo fornece voluntariamente essas publicações. Estes podem ser sobre qualquer coisa relacionada ao estudo.
Publicações Gerais
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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)
1 de maio de 2024
Conclusão Primária (Estimado)
1 de fevereiro de 2027
Conclusão do estudo (Estimado)
1 de fevereiro de 2027
Datas de inscrição no estudo
Enviado pela primeira vez
31 de janeiro de 2024
Enviado pela primeira vez que atendeu aos critérios de CQ
8 de fevereiro de 2024
Primeira postagem (Real)
16 de fevereiro de 2024
Atualizações de registro de estudo
Última Atualização Postada (Real)
5 de novembro de 2026
Última atualização enviada que atendeu aos critérios de controle de qualidade
2 de novembro de 2026
Última verificação
1 de novembro de 2026
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
- Processos Patológicos
- Condições Patológicas, Sinais e Sintomas
- Doenças cardiovasculares
- Inflamação
- Produtos químicos orgânicos
- Hidrocarbonetos
- Hidrocarbonetos, cíclicos
- Carboidratos
- Naftalenos
- Hidrocarbonetos aromáticos policíclicos
- Hidrocarbonetos, aromáticos
- Compostos policíclicos
- Aminas
- Álcoons
- Fenoxipropanolaminas
- Propanolaminas
- Álcoois amino
- Propanols
- Propranolol
- Açúcares
Outros números de identificação do estudo
- 23-2768
- 1R01HL157422-01 (Concessão/Contrato do NIH dos EUA)
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
Sim
Estuda um produto de dispositivo regulamentado pela FDA dos EUA
Não
produto fabricado e exportado 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 .