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Effect of Dietary Oils as G-protein-coupled Receptor Agonists on Glucose Tolerance

NCT03774095 · Status: UNKNOWN · Phase: NA · Type: INTERVENTIONAL · Enrollment: 10

Last updated 2018-12-14

No results posted yet for this study

Summary

Agonistic activation of fat metabolite responsive G-protein-coupled receptors (GPCR) has been linked to improved glucose metabolism through increased glucose-stimulated-insulin-secreting (GSIS) and incretin release, improved insulin sensitivity and reduced low grade inflammation. In vitro studies have demonstrated that pinolenic acid (20% of pine nut oil) is a potent dual agonist of two GPCRs: free fatty acid receptor-1 (FFA1, formerly GPR40) and free fatty acid receptor-4 (FFA4, formerly GPR120). Moreover, pinolenic acid was able to improve glucose tolerance in mice. G-protein-coupled receptor-119 (GPR119) is known to be activated by the monoacylglycerol: 2-oleoylglycerol (2OG), which is a glycerol molecule attached to oleic acid in the second position. Olive oil contains 61-80% oleic acid, and under digestion 2OG is produced. 2OG has been shown to stimulate GLP-1 release in humans and interestingly, it has recently been suggest that simultaneous activation of GPR119 and FFA1 acts in synergy and enhances enteroendocrine GLP-1 secretion more than the summarized individual agonistic activation. However, this remains to be evaluated in humans. The investigators hypothesize that a combination of pinolenic acid and 2OG administered in delayed release capsules will act in synergy and enhance 1) GLP-1 secretion by stimulating FFA1/FFA4 and GPR119 on enteroendocrine cells causing improved GSIS and increased satiety and 2) enhance GSIS by directly stimulating FFA1 and GPR119 on beta-cells.

Study aim: To investigate the acute effects of pinolenic acid combined with 2OG (olive oil) versus pinolenic acid alone on changes in glucose tolerance, insulin, GLP-1, GIP and ghrelin secretion, appetite and gastrointestinal tolerability in overweight and obese healthy humans.

Conditions

Interventions

DIETARY_SUPPLEMENT

Hydrolyzed pine nut oil

Given 30 min prior to oral glucose tolerance test

DIETARY_SUPPLEMENT

Hydrolyzed pine nut oil and olive oil

Given 30 min prior to oral glucose tolerance test

Sponsors & Collaborators

  • Karina Vejrum Sørensen

    lead OTHER

Principal Investigators

  • Kurt Hø, MD · Odense University Hospital/ University of Southern Denmark

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
CROSSOVER

Eligibility

Min Age
40 Years
Max Age
70 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2018-06-11
Primary Completion
2018-12-30
Completion
2018-12-30

Countries

  • Denmark

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03774095 on ClinicalTrials.gov