- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02440061
Ghrelin and Beta Cell Function in Diabetes
March 29, 2018 updated by: Jenny Tong, MD, MPH
Ghrelin Effect on Beta Cell Function in Health and Disease #2
Ghrelin is a hormone naturally produced in the stomach and the gut.
The purpose of this research study is to determine the role of this gut hormone in the regulation of insulin secretion from the pancreas and glucose disposal after we eat.
The investigators hypothesize that ghrelin has an effect on the pancreas and on how our body handles glucose after we eat.
The investigators will compare insulin secretion and glucose changes during meal ingestion while either acyl ghrelin (AG) or saline (salt solution) is being infused through your vein on separate study days.
AG is a form of the ghrelin hormone that has a small modification to it that allows it to bind to a specific receptor.
The investigators hypothesize that AG has an effect on how the body handles glucose after a meal.
AG has been approved by the U.S. Food and Drug Administration (FDA) for human research only.
This study will also involve the use of a medicine called arginine, which is a naturally occurring product and found in many nutritional supplements.
Its use in this study is investigational.
The use of arginine helps maximize insulin release from the pancreas so the investigators can better examine whether AG affects insulin secretion.
Study Overview
Status
Withdrawn
Conditions
Intervention / Treatment
Study Type
Interventional
Phase
- Phase 1
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
-
-
North Carolina
-
Durham, North Carolina, United States, 27705
- Duke Center For Living
-
-
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 70 years (Adult, Older Adult)
Accepts Healthy Volunteers
Yes
Genders Eligible for Study
All
Description
Inclusion Criteria:
T2DM study subjects to be considered for the study must meet the following inclusion criteria:
- Established T2DM with good to moderate glycemic control
- HbA1c < 8.5%
- Diabetes treatment with metformin, sulfonylurea, thiazolidinediones or combination of these medications; with no use of insulin during the study period
- BMI ≤ 45.0 kg/m2
Control study subjects will be matched for age- (± 2 years), BMI (± 1.5 kg/m2) and gender and must meet the following inclusion criteria:
- HbA1c ≤ 5.7%
- Fasting plasma glucose ≤ 95 mg/dL
- BMI ≤ 45.0 kg/m2
Exclusion Criteria:
All subjects will be excluded for the following reasons:
- History of myocardial infarction or arrhythmia within the past year, abnormal electrocardiogram (ECG) with evidence of ischemia or arrhythmia, history or symptoms of congestive heart failure
- Uncontrolled hypertension
- History or active liver or renal disease (AST or ALT >2x upper limits of normal, calculated glomerular filtration rate [eGFR] <60 at screening)
- History of pituitary or adrenal disorders or neuroendocrine tumor
- Anemia defined as hematocrit <33% at screening
- Active cancer diagnosis or currently undergoing cancer treatment
- History of anorexia nervosa or previous gastrointestinal tract surgery
- Pregnancy or lactation
Control subjects will be excluded for the following reasons:
- History or clinical evidence of impaired fasting glucose or impaired glucose tolerance on a 75 g OGTT, established diabetes mellitus, or taking medications prescribed for diabetes
- Use of medications that alter insulin sensitivity (i.e. niacin, glucocorticoids, metformin)
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: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: Single
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Study Group: Type 2 Diabetes Mellitus (T2DM)
Subjects with Type 2 Diabetes Mellitus (T2DM).
Subjects will receive AG and saline infusions, but the order of which they receive will be random and they will not be told which one they are receiving on each given visit.
Arginine will be used at both study visits.
|
Synthetic human AG (0.28 μg/kg) bolus over 1 minute followed by 2 μg/kg/hr continuous infusion for 4.5 hours.
Arginine hydrochloride (5 g) intravenously over 45 seconds.
A continuous infusion of 0.9% saline solution (control) for 4.5 hours.
|
Active Comparator: Control Group
Control group of healthy subjects.
Subjects will receive AG and saline, but the order of which they receive will be random and they will not be told which one they are receiving on each given visit.
Arginine will be used at both study visits.
|
Synthetic human AG (0.28 μg/kg) bolus over 1 minute followed by 2 μg/kg/hr continuous infusion for 4.5 hours.
Arginine hydrochloride (5 g) intravenously over 45 seconds.
A continuous infusion of 0.9% saline solution (control) for 4.5 hours.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Postprandial insulin secretion (ISR-meal)
Time Frame: approximately 8 weeks
|
Postprandial insulin secretion (ISR-meal) will be derived from plasma C-peptide concentrations during MTT (0-240 min) using deconvolution with population estimates of C-peptide clearance.
|
approximately 8 weeks
|
Index of β-cell sensitivity to glucose
Time Frame: approximately 8 weeks
|
Index of β-cell sensitivity to glucose will be calculated as incremental insulin/glucose (I/G) AUC (ΔAUCI/G).
|
approximately 8 weeks
|
Whole body insulin sensitivity using the Matsuda Index
Time Frame: approximately 8 weeks
|
The Matsuda Index is a well-known index of insulin sensitivity derived from several glucose and insulin values obtained during a mixed meal
|
approximately 8 weeks
|
β-cell function (DI-meal)
Time Frame: approximately 8 weeks
|
β-cell function (DI-meal) will be calculated as ΔAUCI/G x Matsuda Index
|
approximately 8 weeks
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Investigators
- Principal Investigator: Jenny Tong, MD, Duke University
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 (Anticipated)
May 1, 2018
Primary Completion (Anticipated)
June 1, 2019
Study Completion (Anticipated)
June 1, 2019
Study Registration Dates
First Submitted
May 7, 2015
First Submitted That Met QC Criteria
May 8, 2015
First Posted (Estimate)
May 12, 2015
Study Record Updates
Last Update Posted (Actual)
April 2, 2018
Last Update Submitted That Met QC Criteria
March 29, 2018
Last Verified
March 1, 2018
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Pro00060865
- R01DK097550 (U.S. NIH Grant/Contract)
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Yes
Studies a U.S. FDA-regulated device product
No
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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