Acetaminophen's Antinociceptive Effect When Associated With N-Acetylcysteneine (PANACE)
ACETAMINOPHEN ANTINOCICEPTIVE EFFECT WHEN ASSOCIATED WITH N-ACETYLCYSTENEINE
Acetaminophen is one of the most widely used analgesic in the world, recommended for the symptomatic treatment of fever and pain.
The purpose of this study is to assess the effectiveness of acetaminophen in association with N-acetylcysteine.
The objective of this study is to evaluate if the association in healthy volunteers of acetaminophen and N-acétylcystéine
- - decrease the antinociceptive effect of acetaminophen in comparison to a group control
- - and if this antinociceptive effect may depend of the genetic polymorphism of GSH enzyme.
Visão geral do estudo
Status
Condições
Intervenção / Tratamento
Descrição detalhada
Period 1 : To Day -4 to Day 0
Day -4 at 8:00 am at Clinical Pharmacology Center
- Inclusion Visit, signature of Informed consent form, clinical exam.
- Training test
- Blood sample (GSH, pharmacogenetic, Biochemistry assay)
- Randomization and attribution of treatment for the fisrt study period at home: (day -4, -3, -2, -1) 4 days of oral acetaminophen and [N-acetylcysteine or placebo] according to the randomization plan.
At day -3, -2 and -1 a salivary sample will be done to control the treatment compliance.
Day 0 at Clinical Pharmacology Center Clinical examination Measurement of the basal pain thresholds and pain evaluation (Visual Analog Scales) Blood and urinary sample (acetaminophen and GSH assay)
T0 : Administration of product: acetaminophen and [N-acetylcysteine or placebo]
T0+1H: Thermal stimulation according to the established paradigm (threshold temperature +3°C ) and pain evaluation (Visual Analog Scales)
T0+2H: Thermal stimulation according to the established paradigm (threshold temperature +3°C ) and pain evaluation (Visual Analog Scales) and Blood sample (acetaminophen assay)
T0+3H: Thermal stimulation according to the established paradigm (threshold temperature +3°C ) and pain evaluation (Visual Analog Scales)
T0+4H: Thermal stimulation according to the established paradigm (threshold temperature +3°C ) and pain evaluation (Visual Analog Scales) and Blood and urinary sample (acetaminophen, GSH, biochemistry assay)
- Lunch before departure
2 weeks of wash-out
Period 2 : To Day 17 to Day 21
Same of period 1. Subject who receives N-acétylcystéine in period 1 will receive placebo in second period and vice versa.
Tipo de estudo
Inscrição (Real)
Estágio
- Fase 1
Contactos e Locais
Locais de estudo
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Clermont-Ferrand, França, 63003
- CHU de Clermont-Ferrand
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
Inclusion Criteria:
- Male
- Between 18 and 45 years old
- Without treatment during the 7 days before inclusion specially no use of antalgic and anti-inflammatory
- Cooperation and understanding enough to conform to the study obligations -Having given free, informed written consent
- Affiliated at system of French social security
- Inscription or acceptation of inscription in the national register of volunteers involved in trials.
Exclusion Criteria:
- Patient with one or many contraindication for the administration of the trial's products,
- Patient that have taken N-acetylcysteine as bronchial thinner during the last 3 days,
- Patient with medical or surgical history judged by the investigator or his representative as being not compatible with the clinical trial
- Patient with disease progression during inclusion,
- Patient with excessive consumption of alcohol, tobacco (+ than 10 cigarette/day), coffee, tea or drinks with caffeine (equivalent to more than 4 cup a day) or any addiction to drugs,
- Patient with a heat pain mean threshold during training higher or equal to 46.5°C,
- Patient who participated in another clinical trial, located in exclusion period or received benefits > 4500 euros during 12 months before the beginning of trial,
- Patient with cooperation and understanding that do not allow him to follow the trial,
- Patients with minor or under guardianship,
- No affiliation at system of French social security
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Finalidade Principal: Tratamento
- Alocação: Randomizado
- Modelo Intervencional: Atribuição cruzada
- Mascaramento: Dobro
Armas e Intervenções
Grupo de Participantes / Braço |
Intervenção / Tratamento |
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Experimental: acetaminophen
The purpose of this study is to assess the effectiveness of acetaminophen in association with N-acetylcysteine. The objective of this study is to evaluate if the association in healthy volunteers of acetaminophen and N-acétylcystéine
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Comparador de Placebo: placebo
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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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Pain intensity using Visual Analog Scales (VAS) succeeding thermic stimulations at the threshold temperature +3°C before (T0-1h) and after acetaminophen's administration
Prazo: At day 0
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Pain intensity using Visual Analog Scales (VAS) succeeding thermic stimulations at the threshold temperature +3°C before (T0-1h) and after acetaminophen's administration (T0+1h, T0+2h, T0+3h, T0+4h).
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At day 0
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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
|---|---|---|
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Blood glutathione GSH concentration
Prazo: At day 0
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Blood glutathione GSH concentration at J0 T0-1h and J0 T0+4h
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At day 0
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Blood of acetaminophen concentration and its metabolites
Prazo: at day 0
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Blood of acetaminophen concentration and its metabolites at J0 T0-1h, T0+2h, and T0+4h.
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at day 0
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Urinary assay of the rate of acetaminophen and its metabolites
Prazo: at day 0
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Urinary assay of the rate of acetaminophen and its metabolites at J0 T0-1h, and T0+4h.
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at day 0
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Pharmacogenetic dosage of enzymes involved in glutathione metabolism
Prazo: at day 4
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at day 4
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Colaboradores e Investigadores
Patrocinador
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão Primária (Real)
Conclusão do estudo (Real)
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Estimativa)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
- Efeitos Fisiológicos das Drogas
- Mecanismos Moleculares de Ação Farmacológica
- Agentes Anti-Infecciosos
- Agentes do Sistema Nervoso Periférico
- Antivirais
- Analgésicos
- Agentes do Sistema Sensorial
- Analgésicos, Não Narcóticos
- Antipiréticos
- Agentes de proteção
- Agentes do Sistema Respiratório
- Antioxidantes
- Antídotos
- Eliminadores de Radicais Livres
- Expectorantes
- Paracetamol
- Acetilcisteína
- N-monoacetilcistina
Outros números de identificação do estudo
- CHU-0202
- 2013-000668-27
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 .
Ensaios clínicos em Placebo
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University of OxfordHospital General Universitario Gregorio Marañon; Charite University, Berlin,... e outros colaboradoresAinda não está recrutandoPsicose | Psicose Resistente ao TratamentoEspanha, Reino Unido, Alemanha, Israel, Grécia, Itália, Holanda, Suíça