- ICH GCP
- US Clinical Trials Registry
- Klinisk utprøving NCT01102062
Human Urinary Biomarker for Orange Juice Consumption
Human urinary metabolic profiling showed to be very successful to elucidate biomarkers linked to geographic origin and specific food consumption patterns (Holmes and Loo et al.: Human metabolic phenotype diversity and its association with diet and blood pressure. Nature 2008:1-6). It was possible to identify urinary metabolites directly linked to animal vs. vegetable protein intake. This is very valuable for future population studies, where diet is an important lifestyle factor but food questionnaires are time-consuming and expensive. Moreover, miss-reporting is a very common problem.
Our hypothesis is to find the same biochemical marker for orange juice as we already found in a preceding nutritional studies where participants recorded orange consumption.
Studieoversikt
Detaljert beskrivelse
To elucidate the citrus fruit biomarker it needs to be ensured that all volunteers do not consume citrus fruits and foods potentially containing similar ingredients. Therefore it is necessary to ask volunteers to refrain from these foods by giving them dietary restrictions. Extensive literature research showed that some foods (such as grain legumes and brie cheese) may contain the same compound, but in much smaller amounts.
Days 1-3 will be on open diet but with dietary restrictions (no alcohol, cheese, fruits, ethnic foods such as Chinese and Indian food, grain legumes such as beans, lentils, peas and peanuts, and all kinds of sprouts (such as cress or alfalfa)). On day 2 a glass of orange juice (200ml) will be consumed in addition to the open diet. Urine collection will continue and stop on day 4 at 10 am.
During the study to minimise variation in biomarker excretion due to other beverages the participants beverage intake will be restricted to water and coffee.
All urine samples will then be analysed using high resolution NMR spectroscopy and mass spectrometry. Mathematical data analyses as well as the visual examinations of the NMR spectra will also be carried out to validate the presence of citrus fruit biomarkers.
Studietype
Registrering (Faktiske)
Fase
- Ikke aktuelt
Kontakter og plasseringer
Studiesteder
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London, Storbritannia, SW7 2AZ
- Imperial College London
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Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
- healthy individuals
- male/female
- aged 18-45 years
- non-smoker
- BMI 18-25 kg/m2
Exclusion Criteria:
- regular drug intake
- regular food supplements intake
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Grunnvitenskap
- Tildeling: N/A
- Intervensjonsmodell: Enkeltgruppeoppdrag
- Masking: Ingen (Open Label)
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
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Eksperimentell: Orange Juice
1 glass (=200mL) of orange juice
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Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
To elucidate urinary biochemical markers for the consumption of orange juice.
Tidsramme: 6 months
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1H NMR urinary metabolite spectra will be acquired.
Proline betaine will be quantified by peak integration of the resonance at 3.11ppm in the NMR spectrum.
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6 months
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Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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To investigate the kinetics of elucidated biomarker excretion over time.
Tidsramme: 6 months
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Excretion of proline betaine, as quantified from the 1H NMR spectrum of urine, will be plotted over time.
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6 months
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Samarbeidspartnere og etterforskere
Sponsor
Publikasjoner og nyttige lenker
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Faktiske)
Studiet fullført (Faktiske)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Andre studie-ID-numre
- 557-ICL-649
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