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This study will investigate the beneficial effects of supplementation with a plant polyphenol blend rich in anthocyanins on parameters of inflammation and metabolic responses following a challenge with a high-fat (HF) meal.
The investigators will use a randomized crossover study to investigate the effects of: 1) placebo (control); 2) plant polyphenol blend rich in anthocyanins; on systemic inflammatory markers (endotoxemia, cytokines, NF-κB), glucose and lipid metabolic responses following consumption of a high-fat (HF) meal in healthy subjects. The high-fat meal (320 g) consists of English muffin bread, sausage, egg and cheese, obtained from US market and completed with palm fat. The total energy content of the high-fat meal is 1,026 Kcal with 70.5 g of fat (29.8 g of saturated fat), 270 mg of cholesterol, 65 g carbohydrate, 5.2 g sugar, and 33 g protein with a total of 62% energy originated from fat, 25% from carbohydrates and 13% from protein. The high-fat meal will be standard and it will not be adjusted for large and small participants.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Plant polyphenol blend | Experimental | The study product (4 g) consists of 3 g of a mix a maltodextrins, and 1 g of anthocyanin-rich plant polyphenol blend containing: 1) 100 mg bilberry extract; 2) 300 mg black currant extract; and 3) 600 mg black rice extract. |
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| Placebo | Placebo Comparator | The placebo (4 g) consists of a mix of maltodextrins (3.85 g) and Red Dye No. 40 (0.125 g) and Blue Dye No. 1 (0.025 g). |
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| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Plant polyphenol blend | Dietary Supplement | A powder product that will be mixed into a drink and consumed immediately prior to eating a high-fat meal |
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| Measure | Description | Time Frame |
|---|---|---|
| Change from baseline in plasma endotoxin at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure endotoxin in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Measure | Description | Time Frame |
|---|---|---|
| Change from baseline in plasma IL-6 at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure IL-6 in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma insulin at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Patricia Oteiza, PhD | UC Davis | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| UC Davis Nutrition Department | Davis | California | 95616 | United States |
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A randomized placebo-controlled cross-over design study
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| Placebo | Other | A powder product that will be mixed into a drink and consumed immediately prior to eating a high-fat meal |
|
blood sample collected by venipuncture to measure insulin in plasma |
| Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma GLP-1 at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure GLP-1 in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma GLP-2 at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure GLP-2 in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma GIP at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure GIP in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma adiponectin at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure adiponectin in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma leptin at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure leptin in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma ghrelin at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure ghrelin in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma triglycerides at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure triglycerides in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma total cholesterol at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure total cholesterol in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma HDL at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure HDL in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma LDL at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure LDL in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma zonulin at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure zonulin in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma total polyphenols at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure total polyphenols in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma total anthocyanidins at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure total anthycyanidins in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma total catechins at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure total catechins in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in plasma glucose at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure glucose in plasma | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in PBMC IL-8 at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure IL-8 in PBMC | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in PBMC IL-10 at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure IL-10 in PBMC | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in PBMC IL-1β at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure IL-1β in PBMC | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in PBMC IL-12p70 at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure IL-12p70 in PBMC | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in PBMC TNFa at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure TNFa in PBMC | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in PBMC NF-kB at 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption | blood sample collected by venipuncture to measure NF-kB in PBMC | Baseline, 0.5 hr, 1 hr, 2hrs, 3hrs, and 5hrs post high-fat meal consumption |
| Change from baseline in fingerstick triglycerides at 15 minutes post high-fat meal consumption | blood sample collected by fingerstick to measure triglycerides | Baseline, and 15 minutes post high-fat meal consumption |
| Change from baseline in fingerstick total cholesterol at 15 minutes post high-fat meal consumption | blood sample collected by fingerstick to measure total cholesterol | Baseline, and 15 minutes post high-fat meal consumption |
| Change from baseline in fingerstick HDL at 15 minutes post high-fat meal consumption | blood sample collected by fingerstick to measure HDL | Baseline, and 15 minutes post high-fat meal consumption |
| Change from baseline in fingerstick LDL at 15 minutes post high-fat meal consumption | blood sample collected by fingerstick to measure LDL | Baseline, and 15 minutes post high-fat meal consumption |
| Change from baseline in fingerstick glucose at 15 minutes post high-fat meal consumption | blood sample collected by fingerstick to measure glucose | Baseline, and 15 minutes post high-fat meal consumption |