Indigestion, Diabetes Mellitus
Conditions
Brief summary
Researchers are trying to understand why people with indigestion and diabetes mellitus have gastrointestinal symptoms and in particular to understand whether symptoms are related to increased sensitivity to nutrients in the small intestine. As part of this investigation, a medication called ondansetron will also be studied to determine its effects on gastrointestinal function and associated symptoms.
Detailed description
The primary objectives of this study are to evaluate the effects of ondansetron, on symptoms (i) during a gastric emptying study, (ii) during enteral lipid infusion and (iii) in daily life.
Interventions
DRUGOndansetron 8mg
Oral Ondansetron 8 mg
DRUGPlacebo
Oral matched placebo
Sponsors
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Mayo Clinic
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)
Eligibility
Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
Yes
Inclusion criteria
* Healthy male or non-pregnant, non-breastfeeding female volunteers; * 18-75 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; including the willingness and ability to consume the components of the test meals * Symptoms of dyspepsia (i.e., early satiety, postprandial discomfort, nausea, vomiting, regurgitation) * Patients in the 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
Exclusion criteria
* Major abdominal surgery (i.e., appendectomy, cholecystectomy, tubal ligation, hysterectomy, herniorrhaphy, 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 * Current use of opiates, alpha adrenergic agonists, metoclopramide, monoamine oxidase inhibitors, more than one serotonergic medication, and high doses of anticholinergic agents (eg, amitriptyline greater than 50 mg daily). If medically safe, these drugs may be discontinued for four half lives prior to study assessments. * Treatment with GLP-1 agonists and amlyin which cause vagal blockade and may affect central processing of pain * Bleeding or clotting disorders or medications that increase risk of bleeding from mucosal biopsies * Positive tissue transglutaminase antibodies (TTG), * 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 * History of Long QT Syndrome or prolonged QT interval (i.e., corrected QT interval \> 480 ms) * 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 12 months * Patients with gastric pacemakers
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in severity of symptoms during enteral infusion | baseline, every 15 minutes up to 8 hours | Visual analog scale (VAS) used to measure the change in symptom severity with a scale of 0=absent, 1=light, 2=moderate, 3=severe, 4=intolerable |
| Change in severity of symptoms during gastric emptying study | baseline, every 15 minutes up to 2 hours | Visual analog scale (VAS) used to measure the change in symptom severity with a scale of 0=absent, 1=light, 2=moderate, 3=severe, 4=intolerable |
| Change in severity of daily symptoms | Baseline, daily for six weeks | Gastroparesis Cardinal Symptom Index - Daily Diary (GCSI-DD) used to measure the change in symptoms severity with a scale of 0=none, 1= very mild, 2=mild,3=moderate, 4=severe, 5= very severe |
| Change in severity of gastrointestinal symptoms | Baseline, 2 weeks, 6 weeks | Gastrointestinal Disorders - Symptom Severity Index (PAGI-SYM) used to measure the change in symptoms severity with a scale of 0=none, 1= very mild, 2=mild,3=moderate, 4=severe, 5= very severe |
| Change in severity of gastrointestinal symptoms effect on Quality of Life | Baseline, 2 weeks, 6 weeks | Gastrointestinal Disorders - Quality of Life and Well-Being (PAGI-QOL) used to measure the change in symptoms severity with a scale of 0=none, 1= very mild, 2=mild,3=moderate, 4=severe, 5= very severe |
| Change in effect of Gastrointestinal symptoms on Quality of Life | Baseline | Nepean Dyspepsia Index used to measure symptoms severity with a scale of 0=none, 1= very mild, 2=mild,3=moderate, 4=severe, 5= very severe |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Peptide YY (PYY) | baseline, approximately 60-120 minutes | Compare the change in Peptide YY (PYY) level during a lipid infusion |
| Plasma | baseline, approximately 60-120 minutes | Compare the change in plasma level during a lipid infusion |
| Glucose level | baseline, approximately 60-120 minutes | Compare the changes in glucose level during a lipid infusion |
| Severity of gastrointestinal symptoms - Nepean Dyspepsia index | Baseline | Nepean Dyspepsia Index is used to measure symptom severity with a scale of 0=none, 1= very mild, 2=mild,3=moderate, 4=severe, 5= very severe |
| Effect of gastrointestinal symptoms on Quality of Life - Nepean Dyspepsia index | Baseline | Score is derived from 25 items pertaining to QOL |
| Insulin level | baseline, approximately 60-120 minutes | Compare the changes in insulin level during a lipid infusion |
| C-peptide level | baseline, approximately 60-120 minutes | Compare the changes in C-peptide level during a lipid infusion |
| Glucagon-like Peptide 1 (GLP-1) | baseline, approximately 60-120 minutes | Compare the changes in Glucagon-like Peptide 1 (GLP-1) level during a lipid infusion |
| Cholecystokinin (CCK) | baseline, approximately 60-120 minutes | Compare the changes in Cholecystokinin (CCK) level during a lipid infusion |
| Ghrelin | baseline, approximately 60-120 minutes | Compare the changes in Ghrelin level during a lipid infusion |
Countries
United States
Contacts
Primary ContactKelly J Feuerhak
Outcome results
None listed