Regulation of Fat-stimulated Neurotensin Secretion in Healthy Subjects

March 9, 2015 updated by: University Hospital, Basel, Switzerland

Mechanistic Study (Physiology)

Context: Cholecystokinin (CCK) and neurotensin are stimulated during meal intake by the presence of fat in the small intestine. The sequence of events suggests that fat hydrolysis is crucial for triggering the release.

Objectives: The aim of this study was therefore to investigate whether CCK mediated the effect of intraduodenal (ID) fat on neurotensin secretion via CCK-1 receptors.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Setting: Single center study; 34 male volunteers were studied in consecutive, randomized, double blind, crossover studies.

Subjects and Methods: CCK and neurotensin release were quantified in: 1) 12 subjects receiving an ID fat infusion with or without 60 mg orlistat, an irreversible inhibitor of gastrointestinal lipases, in comparison to vehicle. 2) 12 subjects receiving ID long chain fatty acids (LCF), ID medium chain fatty acids (MCF) or ID vehicle. 3) 10 subjects receiving ID LCF with and without the CCK-1 receptor antagonist dexloxiglumide (DEXLOX) or ID vehicle plus IV saline (placebo). Hormone concentrations were measured by specific RIA systems.

Study Type

Interventional

Enrollment (Actual)

34

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Switzerland
      • Basel, Switzerland, CH-4031
        • Clinical Research Center, University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 35 years (Adult)

Accepts Healthy Volunteers

Yes

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Healthy male subjects

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: A, 3; B, 3; C, 3
A, 3: Fat with and without orlistat or placebo. B, 3: LCF vs MCF vs placebo. C, 3: LCF with and without DEXLOX or placebo.
Dietary supplement: Fat perfusion to the small intestine
  1. Triglycerides, long chain fatty acids, medium chain fatty acids perfused to the small intestine
  2. Orlistat perfused to the small intestine
  3. DEXLOX as CCK-1 receptor antagonist

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Neurotensin plasma concentrations
Time Frame: Change in plasma cocnentrations over 2-3 hours
Change in plasma cocnentrations over 2-3 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Basel, Switzerland

Investigators

  • Principal Investigator: Juergen Drewe, MD, University Hospital, 4031 Basel, Switzerland
  • Principal Investigator: Christoph Beglinger, MD, Department of Research and Clinical Pharmacology, University Hospital, Basel Switzerland

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

January 1, 2006

Primary Completion (Actual)

March 1, 2007

Study Completion (Actual)

March 1, 2007

Study Registration Dates

First Submitted

October 8, 2007

First Submitted That Met QC Criteria

October 9, 2007

First Posted (Estimate)

October 10, 2007

Study Record Updates

Last Update Posted (Estimate)

March 10, 2015

Last Update Submitted That Met QC Criteria

March 9, 2015

Last Verified

March 1, 2015

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • EKBB 86/05
  • SNF Grant. 3200-065588.04/1

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.

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