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DyspepsiaPhase 2NCT02170870

Gastrointestinal Sensorimotor Dysfunctions in Diabetes Mellitus

A Phase 2 study testing Exendin 9-39 and Microlipid in people with Dyspepsia and Diabetes Mellitus With Gastrointestinal Symptoms, run by Mayo Clinic at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to understand why people with indigestion have gastrointestinal symptoms and in particular to understand whether symptoms are related to increased sensitivity to nutrients in the small intestine and to a hormone (GLP1) which is normally released from the small intestine in response to… Read more about this study

Who is it for?
Ages 18 to 70 yearsHealthy volunteers can take part
What is being tested?
Exendin 9-39 and Microlipid
Type of treatment
Injection or infusion
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
104 participants
Where
1 siteUnited States
Study dates
Jun 2014to 17 Nov 2017
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 70 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Healthy male or non-pregnant, non-breastfeeding female volunteers;
  • 18-70 years old;
  • Able to provide written informed consent before participating in the study;
  • Able to communicate adequately with the investigator and to comply with the requirements for the entire study
  • Additional inclusion criteria for patients:
  • Symptoms of dyspepsia (i.e., early satiety, postprandial discomfort, nausea, vomiting, regurgitation)
  • Patients in the Diabetes Mellitus (DM) group will also require Type 1 or 2 DM of ≥ 3 years duration; in patients with type 2 DM, the dyspepsia symptoms should have begun or worsened after DM was diagnosed

Who cannot join

  • Major abdominal surgery (i.e., appendectomy, cholecystectomy, tubal ligation, hysterectomy, and limited colonic resection are permissible)
  • Clinical evidence (including physical exam and EKG) of significant cardiovascular, respiratory, renal, hepatic, gastrointestinal, hematological, neurological, psychiatric or other disease that may interfere with the objectives of the study and/or pose safety concerns
  • Opiates, alpha adrenergic agonists, metoclopramide, and high doses of anticholinergic agents (e.g., amitriptyline greater than 50 mg daily). If medically safe, these drugs may be discontinued for four half lives prior to study assessments
  • Treatment with glucagon-like peptide-1 (GLP-1) agonists and amylin which cause vagal blockade and may affect central processing of pain
  • Use of tobacco products within the past six months or NSAIDs or aspirin within the past week (since they all may affect intestinal permeability)
  • Bleeding or clotting disorders or medications that increase risk of bleeding from mucosal biopsies
Show all 16Show fewer
  • Positive tissue transglutaminase antibodies (TTG)
  • For two days prior to studies, subjects will be instructed to avoid ingestion of artificial sweeteners such as sucralose (SplendaTM), aspartame (NutrasweetTM), foods containing lactulose or mannitol
  • Pregnant or breast-feeding females
  • Known intolerance or allergy to eggs
  • Poor peripheral venous access, if central venous access is not available
  • Any other condition or prior therapy that, in the opinion of the investigator, would make the patient unsuitable for the study
  • Current symptoms of a functional gastrointestinal disorder assessed by questionnaire
  • Severe vomiting that would preclude tube placement or participation in the study
  • Structural cause for symptoms by endoscopy within the past 48 months
  • Patients with gastric pacemakers

Trial locations and contacts

1 site in 1 country.

United States1 site
  • Mayo Clinic in Rochester

    Rochester, Minnesota, 55905

Other trials in United States

About this study

The purpose of this study is to understand why people with indigestion have gastrointestinal symptoms and in particular to understand whether symptoms are related to increased sensitivity to nutrients in the small intestine and to a hormone (GLP1) which is normally released from the small intestine in response to nutrients. We propose to study the contribution of GLP1 to intestinal sensitivity with a drug (exendin 9-39) that blocks the effects of GLP1.

Read the detailed description

Upper gastrointestinal symptoms (early satiety, pain, nausea, and vomiting) are not uncommon in diabetic (DM) enteropathy. While these symptoms are often attributed to accelerated or delayed gastric emptying, the precise contribution of abnormal gastric emptying to symptoms in patients with DM gastroparesis is often unclear.

The investigators recently observed that approximately 50% of patients with functional dyspepsia have increased sensation to duodenal nutrient (carbohydrate and lipid) perfusion. Another recent study suggests that patients with functional dyspepsia have low-grade mucosal inflammation, abnormalities of cell-to-cell adhesion proteins which predispose to increased epithelial permeability, and a leaky epithelial barrier. Type 1 DM is associated with increased small intestinal permeability even in subjects who do not have celiac disease.

Hence, the investigators proposed to evaluate the overall hypothesis that intestinal chemosensitivity related to increased epithelial permeability and GLP-1 explains symptom severity in patients with functional dyspepsia and in patients with DM and dyspepsia. Healthy subjects, Patients with DM and GI symptoms, and patients with functional dyspepsia underwent assessment of intestinal chemosensitivity during duodenal nutrient perfusion, gastric emptying (by scintigraphy), cardiovascular and GI vagal functions (plasma pancreatic polypeptide response to sham feeding and a comprehensive autonomic reflex screen), in vivo assessment of small intestinal permeability (urinary lactulose:mannitol ratio), and upper endoscopy with assessment of epithelial tight junction proteins and permeability on small bowel biopsies.

During the nutrient infusion, subjects in each group (i.e., healthy subjects, functional dyspepsia and DM) were randomized to lipid infusion and placebo or lipid infusion and exendin 9-39. Hormonal responses (i.e., GLP-1, cholecystokinin (CCK), gastric inhibitory polypeptide (GIP), glucagon, peptide tyrosine tyrosine (PYY), C-peptide, and insulin) and plasma glucose will also be evaluated during enteral nutrient infusion. GI symptoms during each perturbation (meal, nutrient infusion) will be evaluated by validated questionnaires. Blood will be collected for DNA-based genetic analyses, initially to assess the relationship of GI sensorimotor dysfunctions and symptoms with single nucleotide polymorphisms (SNPs) affecting CCK and GLP-1 receptors. The analysis will assess for disturbances in these parameters in functional and DM dyspepsia, investigate associations between symptoms during enteral infusion and hormonal-epithelial functions, and evaluate relationships between daily symptoms and results of testing.

Being tested
Exendin 9-39, Microlipid, Placebo
Medical subject headings
Dyspepsia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Exendin 9-39Drug

    Exendin 9-39 will be administered intravenously (1,200 pmol/kg bolus followed by infusion at 300 pmol/kg/min).

  • MicrolipidDrug

    Lipid infusion {66.7 mL Microlipid (0.5 gm/mL diluted in water to 222 ml).

  • PlaceboDrug

    Normal saline infusion will be prepared to match the appearance of Exendin 9-39

Study groups in NCT02170870
Study groupRoleWhat they receive
Healthy Controls Exendin 9-39ExperimentalExendin 9-39 was administered intravenously (1,200 pmol/kg bolus followed by infusion at 300 pmol/kg/min). Lipid infusion 66.7 mL Microlipid (0.5 gm/mL diluted in water to 222 ml).
Receives: Drug: Exendin 9-39; Drug: Microlipid
Healthy Controls PlaceboPlacebo comparatorNormal saline infusion was prepared to match the appearance of Exendin 9-39. Lipid infusion 66.7 mL Microlipid (0.5 gm/mL diluted in water to 222 ml).
Receives: Drug: Microlipid; Drug: Placebo
Diabetics Exendin 9-39ExperimentalExendin 9-39 was administered intravenously (1,200 pmol/kg bolus followed by infusion at 300 pmol/kg/min). Lipid infusion 66.7 mL Microlipid (0.5 gm/mL diluted in water to 222 ml).
Receives: Drug: Exendin 9-39; Drug: Microlipid
Diabetics PlaceboPlacebo comparatorNormal saline infusion was prepared to match the appearance of Exendin 9-39. Lipid infusion 66.7 mL Microlipid (0.5 gm/mL diluted in water to 222 ml).
Receives: Drug: Microlipid; Drug: Placebo
Functional Dyspepsia Exendin 9-39ExperimentalExendin 9-39 was administered intravenously (1,200 pmol/kg bolus followed by infusion at 300 pmol/kg/min). Lipid infusion 66.7 mL Microlipid (0.5 gm/mL diluted in water to 222 ml).
Receives: Drug: Exendin 9-39; Drug: Microlipid
Functional Dyspepsia PlaceboPlacebo comparatorNormal saline infusion was prepared to match the appearance of Exendin 9-39. Lipid infusion 66.7 mL Microlipid (0.5 gm/mL diluted in water to 222 ml).
Receives: Drug: Microlipid; Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Mean Intestinal Chemosensitivity to Lipids Perfusion

    Intestinal chemosensitivity was recorded by evaluating symptoms during duodenal lipid infusion (0.5 gm/mL diluted in water to 222 mL) and placebo or the glucagon like peptide 1 (GLP-1) receptor antagonist exendin 9-39 over 2 hours. Participants reported the severity of 6 symptoms (nausea, fullness, bloating, abdominal pain, belching, and burning) at 15 minute intervals using a Visual Analogue Scale (VAS) marked 0 (minimum value) - 4 (maximum value): absent (0), light (1), moderate (2), severe (3) and intolerable(4). The scores recorded for nausea, fullness, bloating, and abdominal pain over the 2 hour infusion were averaged and reported as the mean symptom score. Higher scores mean a worse outcome.

    Measured: Day 1, approximately 2 hours after infusion

Secondary outcomes (1)
  1. Rate of Gastric Emptying (GE t 1/2) in Patients With Diabetes Mellitus (DM) or Non-ulcer Dyspepsia (NUD) Compared to Placebo

    The time for half of the ingested solids or liquids to leave the stomach. Following a meal consisting of two eggs labeled with technetium Tc 99m sulfur colloid (1 mCi) served on one slice of bread with milk labeled with indium In111 diethylenetriaminepentaacetate (0.1 mCi), gastric emptying of solids and liquids was assessed with scintigraphy. Rapid emptying is defined as ≥ 36% emptied at one hour and delayed emptying is defined as < 76% emptied at four hours. Normal emptying is defined as amount less than rapid emptying definition but greater than delayed emptying definition.

    Measured: Day 1

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted23 Jun 2014 (estimated)
  2. Study startJun 2014
  3. Primary completion17 Nov 2017
  4. Study completion17 Nov 2017

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Basic science
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Care provider, Investigator
Enrolment
104 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02170870
Sponsor's protocol ID
14-002098
Other IDs
P01DK068055
Status last verified
Mar 2019
First submitted
20 Jun 2014
Last updated
23 Apr 2019
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Chakraborty S, Halland M, Burton D, Desai A, Neja B, Low P, Singer W, Camilleri M, Zinsmeister AR, Bharucha AE. GI Dysfunctions in Diabetic Gastroenteropathy, Their Relationships With Symptoms, and Effects of a GLP-1 Antagonist. J Clin Endocrinol Metab. 2019 Jun 1;104(6):1967-1977. doi: 10.1210/jc.2018-01623.

    PubMed 30358871

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Exendin 9-39 and Microlipid in people with Dyspepsia and Diabetes Mellitus With Gastrointestinal Symptoms, run by Mayo Clinic at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 23 Apr 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 23 Apr 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Mean Intestinal Chemosensitivity to Lipids Perfusion (time frame: Day 1, approximately 2 hours after infusion). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02170870, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Apr 2019.

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