- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05154461
Intestinal Ketone Bodies Interfere With the Glycemic Control
Intestinal Ketogenic Inhibition of the Incretin GLP-1
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
It has been shown in man that a fatty diet in people with obesity stimulated the release of ketone bodies (KB) in the small intestinal mucosa. This observation was partly explained by an increased level of the ketogenic enzyme 3-hydroxy-3-methylglutaryl-CoA synthase (HMGCS2) in the jejunum of the obese people.
Glucagon-like peptide 1 (GLP-1) is a peptide that is released from the intestinal mucosa and mediates among other things, satiation, as well as insulin-secretion and insulin-sensitivity. In patients with obesity, GLP-1 response to food is attenuated, but it increases following bariatric surgery.
The question arose if the increased KB could be linked to the decreased level of meal-induced GLP-1. Indeed, in mice and rats the increased production of KB could be related to a decreased level of GLP-1. However, such a close relationship has never been shown in man.
The present study tests, therefore, if release of the ketone body beta-hydroxybutyric acid into the intestine on two levels (stomach/duodenum and ileum/colon) of healthy volunteers influences the blood concentration of GLP-1 following an oral glucose tolerance test (OGTT). Glucose, insulin and KB are determined in peripheral plasma according to OGTT-routine.
KB are lipid-derived organic molecules that can serve a circulating energy source during starvation/fasting (or pronged exercise). Beta-hydroxybutyrate (BHB), acetoacetate (AcAc) and acetone ("ketone bodies") are products of acetyl-CoA derived from fatty acids converted to via hepatic mitochondria. The three KB are connected to each by proteolytic interconnection. BHB is the most important source of energy, while AcAc is approximately 25-30% of BHB. Acetone is gas-soluble and is exhaled if ketonemia increases.
The present study utilises ingestion of one KB (BHB) to get an acute, rapid increase in ketonemia. An encapsulation technology is used to differentiate the effect of KB on the small intestine from the effect mainly in the colon. Microcapsules with 1./ alginate, will release the KB in proximal stomach/duodenal intestine, and 2./ pea protein will release in the distal part of the intestine, mainly colon. The microcapsules are of food grade and are produced according to Good Manufacturing Process (GMP) standards (AnaBio Technologies LTD, Cork, Ireland). The KB in the microcapsules will contain 18 g BHB- and Ca+, Mg2+. Together with the encapsulation material (alginate or pea-protein) the total weight will be 20g per dose.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
-
-
-
Gothenburg, Sweden, SE41345
- Dept of Gastrosurgical R&E, Sahlgrenska Universityhospital
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- 18 to 65 years of both sexes
- healthy and without prescribed pharmaceuticals (anticonceptive drugs allowed)
- no symptoms associated with gastrointestinal dysfunction
Exclusion Criteria:
- pregnancy or breastfeeding
- allergy towards standard meals or treatment
- previous substance abuse
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Basic Science
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: GLP-1 in relation to the 2 major BHB release sites
The magnitude of plasma GLP-1 following an OGTT (75g glucose per os) when beta-hydroxybutyrate (BHB) is released either at an upper gastrointestinal site (alginate encapsulation), or at distal gastrointestinal site (pea-protein encapsulation).
BHB is given per-os in a single dose of 18g, plus 2 g encapsulation material; totally 20 g.
|
BHB covered in alginate will be realised in stomach-duodenum
BHB covered in pea-protein will be released in ileum-colon
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Area under curve (AUC) of plasma GLP-1 over 120 minutes.
Time Frame: 120 minutes (AUC)
|
BHB is given in the upper GI tract (alginate encapsulation) or at the distal GI tract (pea-protein encapsulated).
AUC of the plasma GLP-1 concentration (pmol x min) stimulated by an OGTT (75 g glucose per-os given).
|
120 minutes (AUC)
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Lars Fändriks, MD, PhD, Göteborg University
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- Ket001
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
IPD Plan Description
IPD Sharing Time Frame
IPD Sharing Access Criteria
IPD Sharing Supporting Information Type
- STUDY_PROTOCOL
- ICF
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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.
Clinical Trials on Healthy Adult Volunteers
-
Dren BioNovotechRecruitingHealthy Adult VolunteersAustralia
-
AutotelicbioCompletedHealthy Adult VolunteersKorea, Republic of
-
Linda Van EldikDuke Clinical Research Institute; Alzheimer's AssociationCompleted
-
Novus Therapeutics, IncCompletedHealthy Adult VolunteersUnited States
-
Bristol-Myers SquibbTerminatedHealthy Adult VolunteersUnited States
-
Daewoong Pharmaceutical Co. LTD.CompletedHealthy Adult Volunteers
-
Visirna Therapeutics HK LimitedArrowhead PharmaceuticalsNot yet recruiting
-
University of Maryland, BaltimoreVapotherm, Inc.CompletedHealthy Adult VolunteersUnited States
-
Advanced Accelerator ApplicationsAtreus Pharmaceuticals CorporationCompleted
-
University of ArizonaCompleted
Clinical Trials on Alginate
-
Dow University of Health SciencesCompleted
-
Newcastle UniversityRecruiting
-
University of CopenhagenSBiotekCompleted
-
Kyungpook National University HospitalCompletedGastrointestinal SymptomKorea, Republic of
-
Policlinico HospitalCompletedGastro Esophageal RefluxItaly
-
Newcastle UniversityBiotechnology and Biological Sciences Research CouncilCompleted
-
Baylor Research InstituteDeRoyal Industries, Inc.UnknownCentral Line Bloodstream InfectionsUnited States
-
Advanced Medical Solutions Ltd.NAMSARecruiting
-
University of SheffieldNottingham University Hospitals NHS TrustNot yet recruitingTime and Cost-implications of Intraoral Scans vs Alginate Impressions: A Randomised Controlled TrialChairside Time and Costs Associated With Intraoral Scanning Versus Alginate ImpressionsUnited Kingdom