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Oral Administration of Peptides; Absorption From Gastrointestinal Tract

This study has been completed.
Information provided by:
University Hospital, Basel, Switzerland Identifier:
First received: May 2, 2007
Last updated: October 16, 2008
Last verified: October 2008

Context: Oral formulations of GLP-1 and PYY3-36, two satiety peptides, were studied. An oral delivery system would be preferable in many of the possible therapeutic indications of these peptides.

Objectives: Our objective was to establish the pharmacological profile of increasing oral doses of GLP-1 and PYY3-36 in healthy volunteers. In addition, the pharmacological effects of GLP-1 were investigated.

Setting: Single center escalating dose study with oral applications. Subjects and Methods: In the first part, GLP-1 was given orally to 6 male subjects; the treatment consisted of one of the following oral doses of either GLP-1 (0.5, 1.0, 2.0 and 4.0 mg) or placebo. In the second part, PYY3-36 was given orally to another 6 healthy male subjects; the treatment consisted of one of the following oral doses of either PYY3-36 (0.25, 0.5, 1.0, 2.0 and 4.0 mg) or placebo.

Condition Intervention Phase
Drug: Increasing doses of GLP-1
Drug: PYY3-36
Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Pharmacokinetics and Pharmacodynamic Effects of Oral GLP-1 and PYY3-36: a Proof of Concept Study in Healthy Subjects

Further study details as provided by University Hospital, Basel, Switzerland:

Primary Outcome Measures:
  • Plasma concentrations of GLP-1 and PYY3-36

Secondary Outcome Measures:
  • Effect on ghrelin secretion
  • Effect on insulin (GLP-1 only)
  • Adverse events

Estimated Enrollment: 12
Study Start Date: October 2006
Study Completion Date: February 2007
Detailed Description:
The study was conducted as a phase I, open, placebo-controlled, dose-escalating study. In part I, six treatments, separated by at least 7 days, were performed in 6 male subjects; treatments consisted of one oral dose of GLP-1(7-36 amide) (0.5, 1.0, 2.0, and 4 mg) or placebo; the last treatment was an intravenous infusion of GLP-1 given for 45 min (0.4 pmol/kg per min infused for 45 min). The treatments were identical in design except for the oral dose of GLP-1. In part II, six oral treatments, separated by at least 7 days, were given in an additional 6 male subjects; treatments consisted of one oral dose of PYY3-36 (0.25, 0.5, 1.0, 2.0, and 4 mg) or placebo; an intravenous infusion of PYY3-36 could not be given as no GMP conform PYY3-36 was available for use in humans. Blood was drawn in regular intervals in EDTA tubes containing aprotinin (500 kIU/ml blood) and a DPP-IV inhibitor for hormone determinations: -30, -15, 0, 15, 30, 45, 60, 75, 90, 120, 150, 180, 240, 300 min.

Ages Eligible for Study:   18 Years to 45 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • healthy males

Exclusion Criteria:

  • females
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Please refer to this study by its identifier: NCT00468884

Clinical Research Centre, University Hospital
Basel, Switzerland, CH-4031
Sponsors and Collaborators
University Hospital, Basel, Switzerland
Principal Investigator: Christoph Beglinger, MD University Hospital, 4031 Basel, Switzerland
  More Information

Publications: Identifier: NCT00468884     History of Changes
Other Study ID Numbers: Oral GLP-1 and PYY
Study First Received: May 2, 2007
Last Updated: October 16, 2008

Keywords provided by University Hospital, Basel, Switzerland:
Kinetics of GLP-1 and PYY3-36; increasing oral doses

Additional relevant MeSH terms:
Glucagon-Like Peptide 1
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs processed this record on May 25, 2017