Analysis of MicroBial Metabolites After Eating Refined Food

Dietary Habits Clinical Trial

— AMBER  

Official title:

Analysis of MicroBial Metabolites After Eating Refined Food

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT04308473
• Other study ID #: 19-1623
• Status: Active, not recruiting
• Phase: N/A
• Start date: September 1, 2020
• Est. completion date: July 2024

Study information

• Verified date: July 2023
• Source: The Cleveland Clinic
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to learn more about what happens in the human body after consuming a meal that contains ultra-processed foods like hamburgers, and if this is different to what happens after consuming a meal that contains lots of whole foods, like fresh vegetables, instead.

Description:

The purpose of this study is to discover more about how the human body and the bacteria living in our intestines, known as "gut flora," react to different foods a person may consume. The investigators want to know if there are differences in compounds measured in a participant's blood and urine after eating different foods. Specifically, the investigators are interested in seeing if there are differences in these compounds after eating ultra-processed foods, like hamburgers and french fries, versus eating whole foods, like fresh fruits and vegetables. The investigators also want to know if the bacteria in our intestines may change the levels of these compounds. To this end, some subjects will be asked to take antibiotics to suppress the gut flora for three days before eating the challenge meal. Suppression of gut flora is a known effect of the antibiotics used in this study. Participants will have two study visits.

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 46
• Est. completion date: July 2024
• Est. primary completion date: February 28, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Men and women age 18 years or above.

• Able to provide informed consent and comply with study protocol

• Able to remain on a stable aspirin regimen (either on or off aspirin or aspirin products) for 1 week prior to starting study until the end of the study period.

Exclusion Criteria:

• Significant chronic illness or end-organ dysfunction, including known history of uncompensated heart failure, renal failure, pulmonary disease, hematologic diseases.

• Active infection or received antibiotics within 6 months of study enrollment.

• Use of over-the-counter probiotic within past month.

• Chronic gastrointestinal disorders.

• Intolerance to probiotic therapy.

• Allergy to vancomycin, ciprofloxacin, neomycin, metronidazole, or lactose.

• Allergy to any of the food components of the challenge meals.

• Having undergone bariatric procedures or surgeries such as gastric banding or bypass.

• Pregnancy.

Related Conditions & MeSH terms

• Dietary Habits

Intervention

Other:
• Ultra-processed Food Meal
An ultra-processed diet challenge test utilizing 1) potatoes fried in highly refined and processed vegetable oil, including corn, soybean, or canola oil, with wheat and milk derivatives; 2) a beef patty sandwich containing processed American cheese, enriched refined flour, mold inhibitor, preservatives and oxidation/reduction additives such as ascorbic acid, potassium/calcium iodate, alpha-amylase, and azodicarbonamide; and 3) a beverage composed of carbonated water, high fructose corn syrup and caramel coloring. The ultra-processed challenge meal will be obtained from a local restaurant on the day of the challenge test.
• Whole Food Meal
A whole food diet challenge test utilizing 1) a side salad comprised of fresh leafy vegetables, and typical whole food toppings including fresh onion, fresh tomato, fresh carrots, and raw walnuts with a pure unrefined olive oil salad dressing; 2) a legume-based main dish including chickpeas, lentils and whole grain quinoa; 3) a fresh berry-rich smoothie beverage consisting of organic blueberries, raspberries, strawberries, bananas, and fresh orange juice. The whole food challenge meal will be made by the study team from readily available commercial foods bought from local grocery stores.

Locations

Country	Name	City	State
United States	Cleveland Clinic Main Campus	Cleveland	Ohio

Sponsors (1)

Lead Sponsor	Collaborator
The Cleveland Clinic

Country where clinical trial is conducted

United States, 

References & Publications (7)

Hall KD, Ayuketah A, Brychta R, Cai H, Cassimatis T, Chen KY, Chung ST, Costa E, Courville A, Darcey V, Fletcher LA, Forde CG, Gharib AM, Guo J, Howard R, Joseph PV, McGehee S, Ouwerkerk R, Raisinger K, Rozga I, Stagliano M, Walter M, Walter PJ, Yang S, Zhou M. Ultra-Processed Diets Cause Excess Calorie Intake and Weight Gain: An Inpatient Randomized Controlled Trial of Ad Libitum Food Intake. Cell Metab. 2019 Jul 2;30(1):67-77.e3. doi: 10.1016/j.cmet.2019.05.008. Epub 2019 May 16. Erratum In: Cell Metab. 2019 Jul 2;30(1):226. Cell Metab. 2020 Oct 6;32(4):690. — View Citation

Koh A, De Vadder F, Kovatcheva-Datchary P, Backhed F. From Dietary Fiber to Host Physiology: Short-Chain Fatty Acids as Key Bacterial Metabolites. Cell. 2016 Jun 2;165(6):1332-1345. doi: 10.1016/j.cell.2016.05.041. — View Citation

Schugar RC, Shih DM, Warrier M, Helsley RN, Burrows A, Ferguson D, Brown AL, Gromovsky AD, Heine M, Chatterjee A, Li L, Li XS, Wang Z, Willard B, Meng Y, Kim H, Che N, Pan C, Lee RG, Crooke RM, Graham MJ, Morton RE, Langefeld CD, Das SK, Rudel LL, Zein N, McCullough AJ, Dasarathy S, Tang WHW, Erokwu BO, Flask CA, Laakso M, Civelek M, Naga Prasad SV, Heeren J, Lusis AJ, Hazen SL, Brown JM. The TMAO-Producing Enzyme Flavin-Containing Monooxygenase 3 Regulates Obesity and the Beiging of White Adipose Tissue. Cell Rep. 2017 Jun 20;19(12):2451-2461. doi: 10.1016/j.celrep.2017.05.077. Erratum In: Cell Rep. 2017 Jul 5;20(1):279. — View Citation

Srour B, Fezeu LK, Kesse-Guyot E, Alles B, Mejean C, Andrianasolo RM, Chazelas E, Deschasaux M, Hercberg S, Galan P, Monteiro CA, Julia C, Touvier M. Ultra-processed food intake and risk of cardiovascular disease: prospective cohort study (NutriNet-Sante). BMJ. 2019 May 29;365:l1451. doi: 10.1136/bmj.l1451. — View Citation

Tang WH, Wang Z, Levison BS, Koeth RA, Britt EB, Fu X, Wu Y, Hazen SL. Intestinal microbial metabolism of phosphatidylcholine and cardiovascular risk. N Engl J Med. 2013 Apr 25;368(17):1575-84. doi: 10.1056/NEJMoa1109400. — View Citation

Tang ZZ, Chen G, Hong Q, Huang S, Smith HM, Shah RD, Scholz M, Ferguson JF. Multi-Omic Analysis of the Microbiome and Metabolome in Healthy Subjects Reveals Microbiome-Dependent Relationships Between Diet and Metabolites. Front Genet. 2019 May 17;10:454. doi: 10.3389/fgene.2019.00454. eCollection 2019. — View Citation

Wang Z, Klipfell E, Bennett BJ, Koeth R, Levison BS, Dugar B, Feldstein AE, Britt EB, Fu X, Chung YM, Wu Y, Schauer P, Smith JD, Allayee H, Tang WH, DiDonato JA, Lusis AJ, Hazen SL. Gut flora metabolism of phosphatidylcholine promotes cardiovascular disease. Nature. 2011 Apr 7;472(7341):57-63. doi: 10.1038/nature09922. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Serial changes in plasma and urine metabolites and biomarkers	Serial changes in plasma and urine metabolites and biomarkers	Pre-meal (baseline) & post-meal at 15 minutes, 30 minutes, 1 hour, 2 hours, 4 hours, and 6 hours
Primary	Serial changes in plasma and urine TMAO	Serial changes in plasma and urine TMAO	Pre-meal (baseline) & post-meal at 15 minutes, 30 minutes, 1 hour, 2 hours, 4 hours, and 6 hours