The Role of Dietary Fat on Postprandial Endotoxemia in Healthy Adults

Not Applicable

Completed

• Conditions: Endotoxemia
• Interventions: Other: N-3 fat Treatment Meal; Other: Saturated-fat Treatment Meal; Other: N-6 fat Treatment Meal; Other: Low-fat Treatment Meal

• Registration Number: NCT02521779
• Lead Sponsor: Iowa State University

Brief Summary

The purpose of this study was to determine the effect of different dietary fats (saturated or unsaturated) on postprandial endotoxemia and systemic low grade acute inflammation. The investigators hypothesized that meals rich in saturated or n-6 fatty acids would increase postprandial endotoxemia but meals high in n-3 fatty acids would decrease postprandial endotoxemia.Participants were recruited via email and randomized to treatment meal in this single-blind, cross-over study. Each test session participants reported to the laboratory right away in the morning. An indwelling catheter was inserted into the participant non-dominant arm by a qualified nurse and a baseline blood draw was taken. The participant was then provided with one of four test meals (a porridge-type meal containing a different dietary fat), which they ate in entirety within 15 minutes. The participants remained in the laboratory for the next five and a half hours and were not allowed to consume any food or drink except water. During this time, further blood draws were taken at intervals of one hour for a total of five hours after the consumption of the test meal. Collected blood was processed on-site and the serum fraction collected and tested for endotoxin, inflammatory biomarkers, and metabolites.

Detailed Description

Not available

Study Timeline

• Study Start: 2014-04
• Primary Completion: 2014-11
• Study Completion: 2015-04
• Study First Submitted: 2015-07-28
• Status Verified: 2015-08
• Study First Submitted QC: 2015-08-10
• Last Update Submitted: 2015-08-10
• Study First Posted: 2015-08-13
• Last Update Posted: 2015-08-13

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

• Aged between 18 and 40 years old;
• Willingness to eat test meals;
• Body mass index ≥ 19.9 ±0.8 and ≤ 24.9 ±0.8;
• Weight stable (< 2 kilogram weight change in the previous 3 months)

Exclusion Criteria

• Presence of acute or chronic disease;
• Use of tobacco products;
• Consumes more than 21 units of alcohol per week;
• Use of anti-inflammatory medication;
• History suggestive of macronutrient malabsorption

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Test Meal N-3 Fat	N-3 fat Treatment Meal	N-3 fat Treatment Meal.
Test Meal Saturated Fat	Saturated-fat Treatment Meal	Saturated-fat Treatment Meal
Test Meal N-6 Fat	N-6 fat Treatment Meal	N-6 fat Treatment Meal.
Test Meal Low-fat	Low-fat Treatment Meal	Low-fat Treatment Meal.

Primary Outcome Measures

Name	Time	Method
Serum endotoxin concentration	Change from baseline every one hour, up to five hours

Secondary Outcome Measures

Name	Time	Method
Serum concentration of biomarkers of inflammation	Change from baseline every one hour, up to five hours
Serum concentration of triglycerides, glucose, and non-esterified fatty acids	Change from baseline every one hour, up to five hours

Trial Locations

Locations (1)

Nutrition and Wellness Research Center; 🇺🇸 Ames, Iowa, United States