Evaluation of a Novel Method for Integrating Insulin Delivery and Glucose Sensing in Adipose Tissue of Diabetic Patients

NCT ID: NCT00813410

Last Updated: 2008-12-23

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

COMPLETED

Clinical Phase

NA

Total Enrollment

14 participants

Study Classification

INTERVENTIONAL

Study Start Date

2007-02-28

Study Completion Date

2007-12-31

Brief Summary

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The study seeks to use microdialysis and microperfusion techniques to assess the feasibility of performing insulin delivery and glucose sensing at a single subcutaneous tissue site.

Detailed Description

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Glucose management in type 1 diabetic patients comprises the measurement of glucose in capillary blood obtained by fingersticking and administration of exogenous insulin in the form of a subcutaneous bolus injection or continuous subcutaneous infusion.

The present study seeks to test an alternative treatment approach that combines glucose measurement and insulin delivery at a single subcutaneous tissue site, thereby circumventing the need for fingerstick blood glucose monitoring. Microperfusion and microdialysis probes are applied in type 1 diabetic subjects to perform insulin delivery and glucose sampling at the same adipose tissue site. The feasibility of estimating blood glucose concentrations from the glucose levels measured at the subcutaneous insulin delivery site is then assessed during an overnight fast and an oral glucose tolerance test.

Conditions

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Type 1 Diabetes

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Interventions

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Glucose measurement at the sc. insulin delivery site

Overnight fasting and oral glucose tolerance test (OGTT) combined with simultaneous subcutaneous insulin delivery and glucose sampling using a single microdialysis or microperfusion probe.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* Type 1 diabetes mellitus patients aged 18 - 65
* C-peptide negative (≤ 0.05 nmol/L)
* HbA1c (glycosylated haemoglobin A1c) \< 10%
* Body Mass Index: 21 - 30 kg/m2
* Informed consent obtained before any trial-related activities.

Exclusion Criteria

* Severe diabetic complications (e.g., proliferative retinopathy, severe nephropathy)
* Female of childbearing potential who is pregnant, breast-feeding or intends to become pregnant or is not using adequate contraceptive methods
* Any condition that would interfere with trial participation or evaluation of results, as judged by the investigator
* Treatment with drugs that could interfere with glucose metabolism and subcutaneous insulin absorption
* Subject with mental incapacity or language barriers
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Medical University of Graz

OTHER

Sponsor Role lead

Responsible Party

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Medical University Graz, Internal Medicine, Endocrinology and Nuclear Medicine

Principal Investigators

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Thomas R. Pieber, MD

Role: PRINCIPAL_INVESTIGATOR

Medical University Graz, Internal Medicine, Endocrinology and Nuclear Medicine

Locations

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Medical University of Graz

Graz, Styria, Austria

Site Status

Countries

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Austria

Other Identifiers

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ZIG96

Identifier Type: -

Identifier Source: org_study_id