Sulphate Accumulation in Prostate (SAP)
A Pre-Biopsy Window of Opportunity Trial to Measure Sulphate Levels in Human Prostate After Broccoli Consumption
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
Epidemiological studies provide evidence for a negative correlation between prostate cancer and intake of cruciferous vegetables such as broccoli. Preliminary data from ongoing intervention trials carried out at the IFR suggest that dietary changes can directly influence the metabolic profile of prostate tissue. The most significant result observed to date is that of sulphate accumulation within the prostate. The additional sulphate is likely to drive synthesis of 3'-phosphoadenosine-5'-phosphosulfate, a universal sulphate donor, a process which would consume energy from ATP. A significant rise in levels of both ADP and phosphate has also been observed in prostate tissue from these studies, supporting the potential depletion of cellular ATP. Interestingly, the data indicate that the extent of ADP accumulation is negatively correlated with prostate cancer progression.
The investigators now propose to undertake a two arm parallel un-blinded study to test the hypothesis that a short-term intervention with broccoli soups will lead to the accumulation of sulphate and ADP in prostate tissue. A potential increase in glutathione metabolites indicating a change in redox status, and therefore functional status, of specific genes involved in tumour suppression (PTEN) will also be investigated.
Furthermore, the investigators aim to determine whether the accumulation of sulphate and ADP is specific to the prostate gland through the metabolic analyses of both prostate and non-prostate tissues.
Tipo de estudio
Inscripción (Actual)
Fase
- No aplica
Contactos y Ubicaciones
Ubicaciones de estudio
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Norfolk
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Norwich, Norfolk, Reino Unido, NR4 7UA
- Institute of Food Research
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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:
- Males
- Scheduled for TPB as part of routine investigation or staging for prostate cancer
- Aged 18-80 years
- BMI between 19.5 and 35 kg/m2
- Smokers and non-smokers
Exclusion Criteria:
- Those regularly taking 5α-reductase inhibitors or testosterone replacement medicines
- Those on warfarin treatment
- Those diagnosed with diabetes
- Those diagnosed with or suspected to be high-risk for human immunodeficiency virus (HIV) and/or hepatitis
- Those allergic to any of the ingredients of the broccoli soups
- Those taking dietary supplements or herbal remedies which may affect the study outcome. Please note that some supplements may not affect the study and this will be assessed on an individual basis
- Those that are unable to understand English or give informed consent
- Parallel participation in another research project that involves dietary intervention
- Any person related to or living with any member of the study team
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Prevención
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
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Experimental: Normal diet
No dietary intervention
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Participants in this group will continue with their normal diet up until the day of their scheduled template prostate biopsy.
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Experimental: Dietary intervention
3 portions of broccoli soup per week
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Participants in this group will consume three portions of broccoli and stilton soup per week for a minimum of four weeks before their scheduled template prostate biopsy.
The soup will be made with a specially cultivated broccoli known as Beneforte, which contains an enhanced dose of a substance called glucoraphanin.
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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Sulphate level
Periodo de tiempo: Biopsy on a single occasion at ≥ 4 weeks
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Sulphate levels will be measured in biopsy tissue samples from both prostate and adipose (fat) tissues.
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Biopsy on a single occasion at ≥ 4 weeks
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Medidas de resultado secundarias
Medida de resultado |
Medida Descripción |
Periodo de tiempo |
|---|---|---|
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ADP
Periodo de tiempo: Biopsy on a single occasion at ≥ 4 weeks
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Adenosine diphosphate (ADP) levels will be measured in biopsy tissue samples from both prostate and adipose (fat) tissues.
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Biopsy on a single occasion at ≥ 4 weeks
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Redox status of phosphatase proteins
Periodo de tiempo: Biopsy on a single occasion at ≥ 4 weeks
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The redox status of phosphatase proteins, including the tumour suppressor PTEN will be assessed in biopsy tissue samples from the prostate gland.
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Biopsy on a single occasion at ≥ 4 weeks
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Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Richard Mithen, PhD, Quadram Institute Bioscience
Publicaciones y enlaces útiles
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 (Actual)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Términos MeSH relevantes adicionales
Otros números de identificación del estudio
- IFR01/2016
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