- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02400450
Designer Functional Foods on Parameters of Metabolic and Vascular in Prediabetes (PREFFER-2014)
Assessment of Designer Functional Foods on Parameters of Metabolic and Vascular Status in Individuals With Prediabetes.
This is a multi-site, double-blind, randomized, controlled food intervention study being conducted at the Canadian Centre for Agri-Food Research in Health and Medicine (CCARM) in Winnipeg and the Mayo Clinic, Rochester, MN, to examine the effects of a portfolio of functional foods on blood glucose and lipids, and blood vessel function in individuals with prediabetes.
A total of 116 participants (n=58/site) with prediabetes (hemoglobin A1c ≥6.0 & <7.0 and no glucose-lowering medications) and body-mass index (BMI) 18-40 will be recruited for a 12-week clinical trial to determine the effect of eating 2 items containing functional ingredients daily compared to 2 similar items lacking the functional ingredients. Study foods provided are to be incorporated into participant's usual diet.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
This study will investigate the effect of a 12 week intervention with a portfolio of 7 food products and 7 comparator products for their effect on glycated hemoglobin, blood lipids, blood vessel function and metabolic parameters in persons with prediabetes. Prediabetes precedes the manifestation of type 2 diabetes and is therefore an appropriate target for dietary interventions. It is also associated with increased cardiovascular disease (CVD) risk because of the presence of abdominal obesity, elevated LDL-cholesterol and reduced vascular function. CVD risk will be assessed based on the profile of lipids and other factors in the blood as well using specialized equipment for non-invasive monitoring of blood vessel function.
If the foods prove beneficial for managing blood glucose levels, the publication of results in scientific journals and in lay documents will increase awareness and provide important information of the health benefits of these products for consumers, health professionals and the food industry. It will also help individuals who may be able to manage their illnesses in a healthful non-pharmaceutical nutritional approach and who may benefit from physician-prescribed nutritional counseling with a focus on foods known to improve certain disease biomarkers. At this time these approaches lack practicality and direct application to individuals who are interested in adopting a new dietary regime capable of disease prevention.
Study Type
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Manitoba
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Winnipeg, Manitoba, Canada, R2H 2A6
- St. Boniface General Hospital
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Minnesota
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Rochester, Minnesota, United States, 55905
- Mayo Clinic
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
Participants must meet the following criteria to be eligible for participation in the study:
- Male, or non-pregnant, non-lactating females, aged 21 - 75 years;
- Glycated hemoglobin A1c ≥6.0% and <7.0%;
- Body-mass index 18-40;
- Able to read, write and communicate orally in English;
- Willing to maintain a stable level of activity during participation in the study;
- Willing to comply with protocol requirements and procedures;
- Willing to provide written informed consent.
Exclusion Criteria:
Failure to meet any one of the above eligibility criteria will result in an inability to participate in the study. Participants will also be excluded if they have or require any of the following:
1 Previous diagnosis of diabetes or taking diabetes medications (glucose-lowering medications, insulin);
2. Previous diagnosis of cardiovascular disease (e.g. heart attack, stroke, peripheral artery disease), or taking lipid-lowering medications, or having a surgical procedure/intervention to treat cardiovascular disease (e.g. bypass surgery, stent). [Note that individuals with hypertension and/or taking anti-hypertensive medication are eligible to participate.];
3. Fasting LDL-cholesterol >160 mg/dL (>4.1 mmol/L);
4. Fasting triglycerides >400 mg/dL (>4.5 mmol/L);
5. Serum alanine aminotransferase (ALT) outside the normal range of 7-56 units/L;
6. Serum creatinine outside the normal range of 0.7-1.3 mg/dL for males and 0.6-1.1 mg/dL for females;
7. Conditions which affect normal nutrient absorption (e.g. Celiac disease, inflammatory bowel disease);
8. Untreated endocrine disorders with the potential to affect glucose and lipid metabolism;
9. In the previous 3 months and during the study, consumption of supplements or herbals in amounts that lower blood glucose or blood lipids (e.g. chromium, margarine with plant sterols, high fibre supplements such as Metamucil, cinnamon extract, ginseng, bitter melon, gamma-linolenic acid);
10. Food allergies or intolerances which severely limit the variety of study food products that can be consumed;
11. Eating philosophies or eating patterns that would limit or not include consumption of the study foods;
12. Any acute medical condition or surgical intervention within the past 3 months;
13. Conditions or medications which are likely to increase the risk to the participants or study personnel, or to reduce the ability of the participant to comply with the protocol, or affect the results;
14. Currently participating in or having participated in a food intervention study within the last month;
15. Inability to adhere to the study protocol;
16. Unable to obtain blood sample at the screening and/or baseline visit.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Double
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Functional Ingredient Group
Participants will be provided with a mix of 6 study products to use over the 12 week trial (2 per day).
These will be a) oatmeal, b) pancake mix, c) chocolate crunch bar, d) cranberry nut bar, e) anytime sprinkle, and f) smoothie mix.
The food items will contain a standardized amount of functional ingredients.
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Participants will be provided with a mix of 6 study products to use over the 12 week trial (2 per day).
These will be a) oatmeal, b) pancake mix, c) chocolate crunch bar, d) cranberry nut bar, e) anytime sprinkle, and f) smoothie mix, standardized for the content of functional ingredients.
Other Names:
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Placebo Comparator: Control Ingredient Group
The control group will receive a comparable set of food items that contain an equivalent amount of calories per portion but without the added functional ingredients.
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The control group will receive a comparable set of food items to use over the 12 week trial (2 per day).
These food items will contain an equivalent amount of calories per portion but without the additional functional ingredients.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Glycated Hemoglobin (A1c)
Time Frame: 12 Weeks
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Assessments of glycated hemoglobin will be completed at Baseline Visit (Day 1), Week 6 (Day 42) and Week 12 visits (Day 84) visits.
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12 Weeks
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LDL-Cholesterol
Time Frame: 12 Weeks
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Assessments of LDL-Cholesterol will be completed at Baseline Visit (Day 1), Week 6 (Day 42) and Week 12 visits (Day 84) visits.
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12 Weeks
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Blood Lipids (Total Cholesterol, HDL-Cholesterol, and Triglycerides)
Time Frame: 12 Weeks
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Assessment of blood lipid profile will be completed at Baseline Visit (Day 1), Week 6 (Day 42) and Week 12 visits (Day 84) visits.
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12 Weeks
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Blood Glucose
Time Frame: 12 Weeks
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Assessment of glucose will be completed at Baseline Visit (Day 1), Week 6 (Day 42) and Week 12 visits (Day 84) visits.
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12 Weeks
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Insulin
Time Frame: 12 Weeks
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Assessment of insulin (and calculation of insulin sensitivity using HOMA-IR, QUICKI) will be completed at Baseline Visit (Day 1), Week 6 (Day 42) and Week 12 visits (Day 84) visits.
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12 Weeks
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C-Reactive Protein
Time Frame: 12 Weeks
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Assessment of C-Reactive Protein will be completed at Baseline Visit (Day 1), Week 6 (Day 42) and Week 12 visits (Day 84) visits.
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12 Weeks
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Advanced Glycation End-products (AGE)
Time Frame: 12 Weeks
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Assessment of advanced glycated endproducts (AGEs) using a non-invasive skin fluorescence device (AGE Reader from Diagnotipics Inc.) will be completed at Baseline Visit (Day 1), Week 6 (Day 42) and Week 12 visits (Day 84) visits.
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12 Weeks
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Pulse Wave Analysis/Velocity (Blood Vessel Function)
Time Frame: 12 Weeks
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Assessment of blood vessel function (arterial compliance) via pulse-wave analysis and pulse wave velocity will be performed at the Baseline Visit (Day 1), Week 6 (Day 56) and Week 12 (Day 84) visits.
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12 Weeks
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Biomarkers of Vascular Function
Time Frame: 12 Weeks
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Assessment of biomarkers of vascular function in acquired blood samples will be completed at Baseline Visit (Day 1), Week 6 (Day 42) and Week 12 visits (Day 84) visits.
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12 Weeks
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Biomarkers of Inflammation, Oxidative Stress, Immune Function and Metabolism
Time Frame: Week 12
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Assessment of inflammation, oxidative stress, immune function and metabolism from acquired blood samples will be completed at Baseline Visit (Day 1), Week 6 (Day 42) and Week 12 visits (Day 84) visits.
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Week 12
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Changes in composite measure of Anthropometrics
Time Frame: 12 Weeks
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Changes in anthropometrics, specifically weight, body mass index, waist and hip circumference will be compared to the Baseline Visit (Day 1) and will be acquired at the Week 6 (Day 56) and Week 12 (Day 84) visits.
Changes in body fat composition as assessed via dual-energy x-ray absorptiometry (DEXA)) will be assesed at the Baseline Visit (Day 1) and Week 12 (Day 84) visit.
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12 Weeks
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Blood Pressure
Time Frame: 12 Weeks
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Blood pressure will be measure and assessed for changes at the Baseline (Day 1), Week 6 (Day 56) and Week 12 (Day 84) visit.
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12 Weeks
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Food Consumption Patterns
Time Frame: 12 Weeks
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Food consumption patterns will be assessed from Baseline Visit (Day 1) to Week 12 (Day 84) using a questionnaire.
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12 Weeks
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Collaborators and Investigators
Sponsor
Collaborators
Investigators
- Principal Investigator: Carla Taylor, PhD, University of Manitoba
Publications and helpful links
General Publications
- Cheng DM, Kuhn P, Poulev A, Rojo LE, Lila MA, Raskin I. In vivo and in vitro antidiabetic effects of aqueous cinnamon extract and cinnamon polyphenol-enhanced food matrix. Food Chem. 2012 Dec 15;135(4):2994-3002. doi: 10.1016/j.foodchem.2012.06.117. Epub 2012 Jul 14.
- Lindstrom J, Louheranta A, Mannelin M, Rastas M, Salminen V, Eriksson J, Uusitupa M, Tuomilehto J; Finnish Diabetes Prevention Study Group. The Finnish Diabetes Prevention Study (DPS): Lifestyle intervention and 3-year results on diet and physical activity. Diabetes Care. 2003 Dec;26(12):3230-6. doi: 10.2337/diacare.26.12.3230.
- Jenkins DJ, Kendall CW, Banach MS, Srichaikul K, Vidgen E, Mitchell S, Parker T, Nishi S, Bashyam B, de Souza R, Ireland C, Josse RG. Nuts as a replacement for carbohydrates in the diabetic diet. Diabetes Care. 2011 Aug;34(8):1706-11. doi: 10.2337/dc11-0338. Epub 2011 Jun 29.
- Diabetes Prevention Program Research Group; Knowler WC, Fowler SE, Hamman RF, Christophi CA, Hoffman HJ, Brenneman AT, Brown-Friday JO, Goldberg R, Venditti E, Nathan DM. 10-year follow-up of diabetes incidence and weight loss in the Diabetes Prevention Program Outcomes Study. Lancet. 2009 Nov 14;374(9702):1677-86. doi: 10.1016/S0140-6736(09)61457-4. Epub 2009 Oct 29. Erratum In: Lancet. 2009 Dec 19;374(9707):2054.
- Silva FM, Kramer CK, de Almeida JC, Steemburgo T, Gross JL, Azevedo MJ. Fiber intake and glycemic control in patients with type 2 diabetes mellitus: a systematic review with meta-analysis of randomized controlled trials. Nutr Rev. 2013 Dec;71(12):790-801. doi: 10.1111/nure.12076. Epub 2013 Nov 1.
- Hlebowicz J, Drake I, Gullberg B, Sonestedt E, Wallstrom P, Persson M, Nilsson J, Hedblad B, Wirfalt E. A high diet quality is associated with lower incidence of cardiovascular events in the Malmo diet and cancer cohort. PLoS One. 2013 Aug 5;8(8):e71095. doi: 10.1371/journal.pone.0071095. Print 2013.
- Deng R. A review of the hypoglycemic effects of five commonly used herbal food supplements. Recent Pat Food Nutr Agric. 2012 Apr 1;4(1):50-60. doi: 10.2174/2212798411204010050.
- Lee T, Dugoua JJ. Nutritional supplements and their effect on glucose control. Adv Exp Med Biol. 2012;771:381-95. doi: 10.1007/978-1-4614-5441-0_27.
- Shane-McWhorter L. Dietary supplements and probiotics for diabetes. Am J Nurs. 2012 Jul;112(7):47-53. doi: 10.1097/01.NAJ.0000415961.92674.d4.
- Suksomboon N, Poolsup N, Boonkaew S, Suthisisang CC. Meta-analysis of the effect of herbal supplement on glycemic control in type 2 diabetes. J Ethnopharmacol. 2011 Oct 11;137(3):1328-33. doi: 10.1016/j.jep.2011.07.059. Epub 2011 Aug 5.
- Perera PK, Li Y. Functional herbal food ingredients used in type 2 diabetes mellitus. Pharmacogn Rev. 2012 Jan;6(11):37-45. doi: 10.4103/0973-7847.95863.
- Thondre PS. Food-based ingredients to modulate blood glucose. Adv Food Nutr Res. 2013;70:181-227. doi: 10.1016/B978-0-12-416555-7.00005-9.
- Pawar K, Thompkinson DK. Multiple functional ingredient approach in formulating dietary supplement for management of diabetes: a review. Crit Rev Food Sci Nutr. 2014;54(7):957-73. doi: 10.1080/10408398.2011.621039.
- Vinik AI. A medicinal food provides food for thought in managing diabetic neuropathy. Am J Med. 2013 Feb;126(2):95-6. doi: 10.1016/j.amjmed.2012.08.008. No abstract available.
- Stringer DM, Taylor CG, Appah P, Blewett H, Zahradka P. Consumption of buckwheat modulates the post-prandial response of selected gastrointestinal satiety hormones in individuals with type 2 diabetes mellitus. Metabolism. 2013 Jul;62(7):1021-31. doi: 10.1016/j.metabol.2013.01.021. Epub 2013 Feb 26.
- Welch RW, Antoine JM, Berta JL, Bub A, de Vries J, Guarner F, Hasselwander O, Hendriks H, Jakel M, Koletzko BV, Patterson CC, Richelle M, Skarp M, Theis S, Vidry S, Woodside JV; International Life Sciences Institute Europe Functional Foods Task Force. Guidelines for the design, conduct and reporting of human intervention studies to evaluate the health benefits of foods. Br J Nutr. 2011 Nov;106 Suppl 2:S3-15. doi: 10.1017/S0007114511003606.
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
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
- B2014:041
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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