- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03512600
Study of the Effects of the Consumption of Different Products Cocoa Derivatives at the Risk of Crystallization of Uric Acid in Urine of Volunteers.
Study Overview
Status
Conditions
Detailed Description
Renal lithiasis is a pathology that affects a high percentage of the population, and although it has been known for a long time, advances carried out in the treatment are limited to the surgical aspects, while the causes responsible for the formation of kidney calculus are not corrected, which leads to a high recurrence.
The "healing" of renal lithiasis inevitably goes through the elimination of the alterations related to the genesis of kidney calculus. It the case of uric acid lithiasis the most important are having urinary pH less than 5.5 and an elevated uricosuria, which can be corrected relatively easy by undergoing changes in dietary habits, and with pharmacological treatment with citrate -which produces and increase in pH- or with inhibitors of the xantino-oxidase as allopurinol. However, among the prophylactic treatments available for ural acid lithiasis, so far it does not exist one for urinary acid crystallization inhibition.
Recently, the effects of theobromine as an inhibitor of the crystallization of uric acid have been described, but only in vitro. The present study aims to assess the effectiveness of theobromine, -product present in high proportion in the cacao-, to prevent the development of uric acid kidney stones.
The study is a unicentric, low intervention, non-randomized, prospective study to assess the effects of the consumption of different cocoa derivate products, in the risk of crystallization of uric acid in the urine. Participants in the study are healthy volunteers and will it will be carried out with 20 individuals who will be recruited in the Research Laboratory in Renal Lithiasis of the Baleares Isles University.
Patients will take a urine test previously to undergo 4 dietary interventions, with their subsequent urine measurements. Patients will choose one diet to follow for 1 day, and will be provided with the corresponding cocoa derivate for the diet (soluble cocoa, black chocolate, chocolate with milk). The day after the diet they will take a fast-picking of urine accumulated during the night of which they followed the controlled diet (12 h nocturne sample), then follow a 6 day washout period, and select another diet to follow and repeat until they have gone through the 4 diets and measurements.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
Islas Baleares
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Palma De Mallorca, Islas Baleares, Spain, 07122
- Universitat de les Illes Balears, IUNICS
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Compliance in participating and collaborating in the study
Exclusion Criteria:
- Cocoa / chocolate allergy or theobromine
- Pregnancy, nursing period (women)
- pharmacological treatment
- chronic diseases (diabetes, kidney failure, heart failure, hyperuricemia, ...)
Study Plan
How is the study designed?
Design Details
- Primary Purpose: OTHER
- Interventional Model: SEQUENTIAL
- Masking: NONE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
EXPERIMENTAL: Study group
All patients will follow four different dietary interventions (with or without cacao) for 1 day prior to the taking of a urine sample. After the sample is taken the patient will follow a washout period of 6 days before following a different diet and this process will be repeated for each patient until they have followed the four diets. . |
Without nutritional intervention, it will consist of normal food intake without food derived from cocoa or coffee for a period of 1 day in the group of 20 patients during meals.
( That day the patient can not consume cocoa derivates nor coffe or coffe derivates).
Other Names:
The nutritional intervention will consist of the intake of 40 g daily a base of food derived from cocoa that will be provided to the paient (Food based on soluble cocoa) during one 1 day period in the group of 20 patients during meals. That day the patient can not consume cocoa derivates nor coffe or coffe derivates exept the one provided.
Other Names:
The nutritional intervention will consist of the intake of 40 g daily a base of food derived from cacao (Food based on black chocolate) during a period of 1 day in the group of 20 patients during meals. That day the patient can not consume cocoa derivates nor coffe or coffe derivates exept the one provided.
Other Names:
The nutritional intervention will consist of the intake of 40 g daily a base of food derived from cocoa (Food based on chocolate with milk) for a period of 1 day in the group of 20 patients during meals. That day the patient can not consume cocoa derivates nor coffe or coffe derivates exept the one provided.
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Ability to inhibit the crystallization of uric acid in urine collected.
Time Frame: 12 hours
|
Ability to inhibit the crystallization of uric acid in urine collected.
|
12 hours
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Concentration of theobromine in urine.
Time Frame: 12 hours
|
Concentration of theobromine in urine.
|
12 hours
|
Collaborators and Investigators
Sponsor
Collaborators
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- IB 3475/17
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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