The Endocrine Colon in Humans

NCT ID: NCT04159181

Last Updated: 2019-11-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

10 participants

Study Classification

INTERVENTIONAL

Study Start Date

2018-07-16

Study Completion Date

2020-07-01

Brief Summary

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This study will examine the role of the colon as an endocrine organ with a focus on the secretion of gastrointestinal peptides.

Detailed Description

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This study will examine the role of the colon as an endocrine organ with a focus on the secretion of gastrointestinal peptides.

We aim to determine the contribution of the colon to the fasting and postprandial release of gut peptides such as glucagon-like peptide-1 (GLP-1) and peptide YY (PYY). Young healthy men will be examined on three occasions at a clinical research Facility after an overnight fast. On one occasion the colon will also be emptied using a cathartic (picoprep). On two occasions an oral solution of lactulose will be administered to stimulate fermentation by colonic bacteria.

Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Healthy men studied on three occasions. Study A and B will be conducted in random order. Day C wil always be conducted as the last study day.
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Day A

After an overnight fast participants will receive an oral solution of lactulose (20g lactulose/200mL water).

Group Type EXPERIMENTAL

Lactulose

Intervention Type OTHER

Oral solution lactulose (20g lactulose/200mL water).

Day B

After an overnight fast participants will drink 200mL of water

Group Type EXPERIMENTAL

Placebo (water)

Intervention Type OTHER

oral administration of Water (200mL).

Day C

After an overnight fast and an evacuation of the colonic content, participants will receive an oral solution of lactulose (20g lactulose/200mL water).

Group Type EXPERIMENTAL

Lactulose

Intervention Type OTHER

Oral solution lactulose (20g lactulose/200mL water).

Picoprep

Intervention Type OTHER

Cathartic to accomplish an evacuation of the colonic content.

Interventions

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Lactulose

Oral solution lactulose (20g lactulose/200mL water).

Intervention Type OTHER

Picoprep

Cathartic to accomplish an evacuation of the colonic content.

Intervention Type OTHER

Placebo (water)

oral administration of Water (200mL).

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Healthy young men (self-reported)
* BMI between 18,5-24,9 kg/m\^2

Exclusion Criteria

* Diabetes mellitus (elevated fasting plasma glucose or HbA1c)
* Family history of diabetes mellitus
* Intestinal disease (e.g. inflammatory bowel disease, malabsorption)
* Family history of intestinal diseases
* Previous gastrointestinal surgery
* BMI \>25 kg/m\^2
* Tobacco use
* Alcohol consumption \> 14 standard drinks/week
* Drug use
* Kidney, Heart- or Liver disease
* Treatment with prescription drugs that can not be held for 12h
* Constipation
* Accelerated or delayed gastric emptying
* Absence of daily bowel movements
* Vegetarian lifestyle
* \> than 3kgs weightloss or weight gain within 3 months
* Haemoglobin concentration \< 8,0mmol/L
* Bleeding diathesis
* Latex or bandaid allergies
Minimum Eligible Age

20 Years

Maximum Eligible Age

40 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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Hvidovre University Hospital

OTHER

Sponsor Role collaborator

University of Copenhagen

OTHER

Sponsor Role lead

Responsible Party

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Simon Veedfald

Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Jens J Holst, MD, Dr.med.

Role: STUDY_DIRECTOR

University of Copenhagen

Locations

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University of Copenhagen

Copenhagen, Capital, Denmark

Site Status

Hvidovre University Hospital

Hvidovre, Capital, Denmark

Site Status

Countries

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Denmark

References

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Christiansen CB, Veedfald S, Hartmann B, Gauguin AM, Moller S, Moritz T, Madsbad S, Holst JJ. Colonic Lactulose Fermentation Has No Impact on Glucagon-like Peptide-1 and Peptide-YY Secretion in Healthy Young Men. J Clin Endocrinol Metab. 2022 Jan 1;107(1):77-87. doi: 10.1210/clinem/dgab666.

Reference Type DERIVED
PMID: 34508600 (View on PubMed)

Other Identifiers

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CBC-COLON-18

Identifier Type: -

Identifier Source: org_study_id

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