The Role of Dietary Fat on Postprandial Endotoxemia in Healthy Adults

Iowa State University

Status: Completed

Conditions: Endotoxemia

Treatments: Other: N-6 fat Treatment Meal; Other: Low-fat Treatment Meal; Other: Saturated-fat Treatment Meal; Other: N-3 fat Treatment Meal

Study type: Interventional

Funder types: Other

Identifiers

NCT02521779

2014-67017-21778 (Other Grant/Funding Number)

14-020

Details and patient eligibility

About

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.

Enrollment: 20 patients

Sex: All

Ages: 18 to 40 years old

Volunteers: Accepts Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Crossover Assignment

Masking: Single Blind

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20 participants in 4 patient groups

Test Meal Saturated Fat

Experimental group

Description:

Saturated-fat Treatment Meal

Treatment:

Other: Saturated-fat Treatment Meal

Test Meal N-6 Fat

Experimental group

Description:

N-6 fat Treatment Meal.

Treatment:

Other: N-6 fat Treatment Meal

Test Meal N-3 Fat

Experimental group

Description:

N-3 fat Treatment Meal.

Treatment:

Other: N-3 fat Treatment Meal

Test Meal Low-fat

Experimental group

Description:

Low-fat Treatment Meal.

Treatment:

Other: Low-fat Treatment Meal