Assessment of Insulin Production From Native Pancreas in Patients With Pancreas Transplants
Public ClinicalTrials.gov record NCT00246844. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
Assessing Arginine-Stimulated Native Pancreas Insulin Production Via Selective Venous Sampling in Patients With Long-Functioning Pancreas Allografts
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This study will examine whether insulin-producing cells in the pancreas (beta cells) can recover in patients with type 1 diabetes who have had a pancreas transplant. In type 1 diabetes, the body's immune system destroys the beta cells. Patients are treated with insulin shots or a pancreas transplant to control their blood sugar. Some experiments suggest that the pancreas may have the capacity to recover some of its insulin-producing capacity, but that ability is negated by factors such as the continuing immune attack and erratic blood sugar levels in patients. Patients who have had a pancreas transplant may be in a unique situation to allow their own pancreas to regrow beta cells for two reasons: 1) the medicines they take to prevent rejection of the transplanted pancreas weaken their immune system; and 2) they have near-normal blood sugar levels because of their functioning transplanted pancreas. This study will test this hypothesis by sampling blood from patients' hepatic vein, which drains the liver and native pancreas and from their iliac vein, which drains the transplanted pancreas. This will determine whether insulin is coming from the transplanted pancreas (iliac vein) or the liver and native pancreas (hepatic vein). Patients 18 years of age and older who have had stable pancreatic transplant function for more than 5 years may be eligible for this study. Candidates are screened with a medical history and physical examination. Participants are admitted to the hospital for 2 days for a full medical examination, blood tests and procedures to determine insulin production. The procedures will include the placement of catheters in the neck and groin for blood sampling. Participants will be closely monitored after the procedures and discharged home if there are no complications.
Study identification
- NCT ID
- NCT00246844
- Recruitment status
- Completed
- Study type
- Observational
- Phase
- Not listed
- Enrollment
- 10 participants
Conditions and interventions
Interventions
Not listed
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 25, 2005
- Primary completion
- Not listed
- Completion
- Aug 14, 2007
- Last update posted
- Jul 1, 2017
2005 – 2007
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| National Institutes of Health Clinical Center, 9000 Rockville Pike | Bethesda | Maryland | 20892 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT00246844, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jul 1, 2017 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT00246844 live on ClinicalTrials.gov.