- ICH GCP
- Registro de ensayos clínicos de EE. UU.
- Ensayo clínico NCT01349543
The Development of a Human Model of Respiratory Syncytial Virus Infection
The aim of this study is to understand the immune response (how the body fights infection) to Respiratory Syncytial Virus (RSV). This virus usually causes a simple 'common cold' illness in healthy adults, but can cause wheezing and lung problems in young infants and the elderly. The investigators want to understand why this is, in order to develop vaccines and treatments.
Participants will include 30-40 healthy adults age 18-55 years. Study procedures will include brief medical exams, breathing tests, a diary of symptoms, blood tests, samples of fluid (lavage) and cells from the nose, throat and lungs. All participants will receive the virus via drops in the nose. The duration of the study for all subjects will be 6 weeks.
Descripción general del estudio
Estado
Intervención / Tratamiento
Descripción detallada
Bronchiolitis is the commonest cause of hospital admission in infants. It is caused by Respiratory Syncytial Virus(RSV), a virus that causes mild 'common colds' in adults, but can cause lung inflammation and difficulty breathing in infants and the elderly. In 2005, nearly 34 million cases in children <5 years occurred, resulting in 3.4 million hospital admissions,and around 120,000 deaths. There is no vaccine, and some previous vaccines actually made the disease worse.
The investigators have been trying to understand why for 40 years. Advances in immunology have given us a completely different way of looking at inflammation: rather than studying what causes it, the investigators now want to know what regulates it. Much of what the investigators know about how what causes and regulates inflammation has come from studies of animals, however, these do not exactly predict what happens in man.
The investigators therefore plan to infect healthy adult volunteers with RSV, and observe what happens in humans after RSV infection. The investigators will collect samples of blood, fluid and cells from the nose, throat, and lungs, and a diary of symptoms over four weeks. The investigators will analyse the blood, fluid, and cells to determine the important mechanisms that regulate inflammation in human RSV infection.
Studies like this have been conducted previously with no severe side effects. The investigators anticipate that the discoveries made in this research project will help us achieve a better understanding of what causes and regulates inflammation in RSV so that the investigators can learn ways to control it, with the aim of developing vaccines and treatments.
Tipo de estudio
Inscripción (Actual)
Fase
- No aplica
Contactos y Ubicaciones
Ubicaciones de estudio
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London, Reino Unido, W2 1PG
- St. Mary's Hospital, Imperial College London, Norfolk Place,
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- Healthy persons aged 18 to 55 years, able to give informed consent
Exclusion Criteria:
- Chronic respiratory disease (asthma, COPD, rhinitis, sinusitis) in adulthood
- Inhaled bronchodilator or steroid use within the last 12 months
- Use of any medication or other product (prescription or over-the-counter) for symptoms of rhinitis or nasal congestion within the last 6 months
- Acute upper respiratory infection (URI or sinusitis) in the past 6 weeks
- Smoking in the past 6 months OR >5 pack-year lifetime history
- Subjects with allergic symptoms present at baseline
- Those in close domestic contact (i.e. sharing a household with, caring for, or daily face to face contact) with children under 3 years, the elderly (>65 years), immunosuppressed persons, or those with chronic respiratory disease
- Subjects with known or suspected immune deficiency
- Receipt of systemic glucocorticoids (in a dose ≥ 5 mg prednisone daily or equivalent) within one month, or any other cytotoxic or immunosuppressive drug within 6 months prior to challenge
- History of frequent nose bleeds
- Any significant medical condition or prescribed drug deemed by the study doctor to make the participant unsuitable for the study
- Pregnant or breastfeeding women
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Ciencia básica
- Asignación: No aleatorizado
- Modelo Intervencionista: Asignación de un solo grupo
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
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Experimental: Viral Challenge
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Intranasal administration
Otros nombres:
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
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Host response to RSV challenge
Periodo de tiempo: Prior to and 0-28 days post challenge
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The host response to RSV challenge will be assessed daily for 14 days using methods such as symptom diaries, volume of nasal secretions, numbers of inflammatory cells in nasal mucus, and levels of chemical mediators in nasal fluids.
This will be compared with that at baseline and at 28 days post challenge.
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Prior to and 0-28 days post challenge
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Colaboradores e Investigadores
Patrocinador
Colaboradores
Investigadores
- Investigador principal: Peter Openshaw, Imperial College London
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Finalización del estudio (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- JROSM0127
Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .
Ensayos clínicos sobre RSV A Memphis 37
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