Clinical trial NCT06449170: Discovery of Biomarkers of Intake of of Highly Consumed Foods in Mexico
Official title: BIAMEX: Discovery of Biomarkers of Intake of Highly Consumed Foods in Mexico by Untargeted Metabolomics
Study type: INTERVENTIONAL
Overall status: ACTIVE_NOT_RECRUITING
Phase: NA
Conditions: Nutrition, Healthy
Diet Habit
Diet, Healthy
Dietary Exposure
Keywords: metabolomics
nutrition
dietary biomarkers
dietary exposure
Lead sponsor: Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran
Sponsor class: OTHER
First posted: 2024-06-07
Enrollment: 12
Sex: ALL
Minimum age (years): 18
Maximum age (years): 40
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Intervention model description: This is a randomized, open, crossover, and controlled design study. A total of 12 healthy subjects (six males and six females) aged 18-40 years with a BMI of 18.5-24.9 kg/m\^2 were recruited. Participants underwent seven interventions (each featuring one of the selected foods or a control beverage), with a washout period of 7 days between interventions.

Each intervention is as follows:

150g of mango + 150ml of control beverage, 120g of avocado + 150ml of control beverage, 300g of cooked nopal + 150ml of control beverage, 3 corn tortillas + 150ml of control beverage, 3 guavas + 150ml of control beverage,

½ cup of amaranth + 150ml of control beverage, 290ml of control beverage
Primary purpose: BASIC_SCIENCE

Brief summary: To determine diet-health associations, researchers rely on information obtained from dietary instruments, such as the 24-hour recall (R24H), food frequency questionnaires (FFQ) and food diaries, in clinical studies. However, it is widely recognized that the information provided by the different instruments is biased by different factors including recall errors and respondent burden. The impact of the variability produced by this bias decreases the robustness of diet-health associations which results in the creation of less efficient standards and recommendations for our population. To address this, the discovery of biomarkers of food intake (BFIs) is an objective tool that indicates exposure to specific foods or various dietary patterns. BFIs allow the calibration of dietary information to obtain the real consumption of the individual and thus clarify the relationship between different pathologies of interest and the intake of different foods. BIAMEX will initially focus on the discovery of BFIs of nopal, corn tortilla, mango, avocado, guava and amaranth. For this purpose, a controlled crossover intervention study is being carried out with the 6 foods to be investigated where 24h urine and plasma samples are being collected. Subsequently, the samples collected will be analyzed by mass spectrometry.

Detailed description: The BIAMEX study aims to address the challenge of improving the accuracy of dietary assessment, a critical factor in misunderstanding the relationship between diet and disease. Traditional dietary assessment tools, such as 24-hour recalls and food frequency questionnaires, are susceptible to biases related to their retrospective nature, such as memory errors and respondent burden. To overcome these limitations, BIAMEX focuses on discovering biomarkers on food intake (BFIs) for foods that originate in our country and are highly consumed by the population. This project will investigate the BFIs for nopal, corn tortilla, mango, avocado, guava, and amaranth.

This exploratory study employs a randomized, open, crossover, controlled design to investigate the metabolomic changes in urine and serum samples from healthy volunteers following the consumption of the selected foods. The interventions aim to assess the impact of each food intake on the metabolomic profile of the participants using an untargeted approach with liquid chromatography-mass spectrometry.

Participants were briefed at the Instituto Nacional de Ciencias Médicas y Nutrición "Salvador Zubirán" on the study's aims, procedures, and benefits before providing informed consent. Subsequent steps included clinical history documentation and blood sampling for eligibility assessment, focusing on fasting glucose, cholesterol levels, and other health indicators. Volunteers underwent seven distinct food interventions in a randomized manner, including mango, avocado, nopal, corn tortillas, guavas, amaranth, and Supportan® drink Cappuccino as the control. This beverage was chosen to avoid metabolomic overlap with the different foods, ensuring distinct biomarker detection. Preceding the intervention days, subjects followed a low-polyphenol diet, excluding test foods and phytochemicals-rich items such as tea, coffee, or chocolate, culminating in a standardized dinner. On the intervention day, subjects arrived fasting at the institution and provided a baseline serum and urine samples. Then, subjects were provided with the test food, after which urine and serum samples were collected at 1h, 2h,4h, 6h postprandially on site. After the six-hour timepoint, the catheter was removed, and a standardized lunch was provided. Subjects continued to collect urine samples at home, corresponding to the 12h and 24h urine collection, using materials provided by the investigation team. Additionally, subjects received dietary instructions and menus to follow for the rest of the day. On the day after the intervention, subjects returned to the institution to deliver the urine collections and to provide the last serum sample corresponding to the 24-hour timepoint. Once the sample was collected, subjects were provided with a complimentary breakfast, and their habitual diet was resumed. This experimental procedure was repeated for each food separated by a 7-day wash-out period.

Eligibility criteria: Inclusion Criteria:

* Signed informed consent
* Healthy males and females
* BMI \>18.5 and \< 25 kg/m2
* Willing/able to consume all test foods and the standardized meals

Exclusion Criteria:

* Smokers
* Diagnosed health condition (chronic or infectious disease)
* Taking nutritional supplements (e.g. vitamins, minerals) several times a week.
* Taking medication.
* Pregnant, lactating.
* Antibiotics treatment within 3 months prior to intervention.
* Vegetarians, as standardized meals will contain meat.
* Not willing to follow nutritional restrictions, including drinking alcohol during study days
* Allergic to foods of interest

Primary outcomes:
measure: Metabolic profiling of urine samples after intake of mango, amaranth, nopal, corn tortilla, avocado, and guava, detected as mass-to-charge signals (cps) by an untargeted metabolomics approach over 24 hours post-intake.
timeFrame: Before intake of foods 00 hours to 24 hours after intake.
measure: Metabolic profiling of serum samples after intake of mango, amaranth, nopal, corn tortilla, avocado, and guava, detected as mass-to-charge signals (cps) by an untargeted metabolomics approach over 24 hours post-intake.
timeFrame: Before intake of foods 00 hours to 24 hours after intake.
Secondary outcomes:
Other outcomes:
Locations:
city: Ciudad de México
country: Mexico
facility: Instituto de Ciencias Médicas y Nutrición Salvador Zubirán
Study officials:
affiliation: National Institute of Medical Sciences and Nutrition Salvador Zubirán
name: Natalia Vázquez Manjarrez, PhD
role: PRINCIPAL_INVESTIGATOR
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