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Trial registered on ANZCTR
Registration number
ACTRN12612000491864
Ethics application status
Approved
Date submitted
12/10/2011
Date registered
7/05/2012
Date last updated
7/05/2012
Type of registration
Retrospectively registered
Titles & IDs
Public title
The Glucose Tolerance Test Study
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Scientific title
The effect of glucose on acute changes in circulating IL-6 concentrations in overweight individuals.
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Secondary ID [1]
273204
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nil
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Universal Trial Number (UTN)
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Trial acronym
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Linked study record
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Health condition
Health condition(s) or problem(s) studied:
Anti-inflammatory effect of insulin after Oral versus intravenous glucose in overweight individuals.
3010
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Overweight/obesity
279037
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Condition category
Condition code
Metabolic and Endocrine
3161
3161
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0
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Normal metabolism and endocrine development and function
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
After fasting overnight 16 Participants will be given 75g glucose to take orally, at a seperate visit they will be given 75g glucose intravenously. As a control these participants will be given water. Following each 5 blood samples will be taken over a 2 hour period. There will be at least one week between each treatment.
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Intervention code [1]
2750
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Other interventions
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Comparator / control treatment
Plasma inflammatory markers will be compared after oral glucose and Intravenous glucose with those measured after water (control).
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Control group
Placebo
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Outcomes
Primary outcome [1]
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Plasma level of IL-6 will be measured at 5 points after the glucose and water are given.
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Assessment method [1]
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Timepoint [1]
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These levels will be measured in blood samples taken at 0, 30, 60, 90 and 120 minutes.
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Secondary outcome [1]
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We will expand available information on the acute anti-inflammatory effect of insulin which may be important in limiting the inflammatory effect of food by measuring changes in plasma IL-6 levels.
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Assessment method [1]
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Timepoint [1]
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proposed publication of results in peer reviewed journals 2012
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Eligibility
Key inclusion criteria
BMI > 27kg/m2 , have no ongoing health problems, not have diabetes, take no medication.
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Minimum age
18
Years
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Maximum age
70
Years
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Sex
Both males and females
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Can healthy volunteers participate?
No
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Key exclusion criteria
Smoking, diabetes. Taking medications. BMI < 27kg/m2
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Study design
Purpose of the study
Educational / counselling / training
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Allocation to intervention
Non-randomised trial
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Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
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Methods used to generate the sequence in which subjects will be randomised (sequence generation)
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Masking / blinding
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Who is / are masked / blinded?
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Intervention assignment
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Other design features
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Phase
Phase 4
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Type of endpoint/s
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Statistical methods / analysis
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Recruitment
Recruitment status
Completed
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Date of first participant enrolment
Anticipated
19/08/2009
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Actual
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Date of last participant enrolment
Anticipated
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Actual
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Date of last data collection
Anticipated
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Actual
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Sample size
Target
15
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
862
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New Zealand
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State/province [1]
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Otago
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Funding & Sponsors
Funding source category [1]
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Charities/Societies/Foundations
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Name [1]
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Healthcare Otago Charitable Trust
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Address [1]
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Danesh Nayak
Finance Transaction Centre,
Southern DHB
Private Bag 1970,
Dunedin 9054
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Country [1]
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New Zealand
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Primary sponsor type
University
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Name
Universtiy of otago
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Address
Department of Medicine,
9th floor,
Dunedin hospital.
201 Great King Street
Dunedin 9016
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Country
New Zealand
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Secondary sponsor category [1]
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None
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Name [1]
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Address [1]
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Country [1]
2921
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Lower South regional Ethics Committee
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Ethics committee address [1]
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Ethics committee country [1]
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New Zealand
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Date submitted for ethics approval [1]
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25/02/2008
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Approval date [1]
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27/11/2008
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Ethics approval number [1]
5253
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Summary
Brief summary
Incretins are hormones that are produced in the intestine in response to food. The major increton is GLP-1 which directly stimulates the pancreas to produce insulin. The incretin effect is responsible for the greater insulin secretion seen after oral glucose intake compared to intravenous glucose. we postulate that after meal insulin changes are responsible for the reduction in circulating inflamatory marker IL-6 concentrations after an oral glucose tolerance test. If this is correct we believe that when the same amount of glucose is adminitered intravenously, due to a reduced insulin response, the after food decrease in IL-6 will be lessened.
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Trial website
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Trial related presentations / publications
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Public notes
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Contacts
Principal investigator
Name
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Address
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Country
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Phone
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Fax
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Email
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Contact person for public queries
Name
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Associate Professor Patrick manning
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Address
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Department of Medicine,
9th floor,
Dunedin hospital.
201 Great King Street
Dunedin 9016
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Country
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New Zealand
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Phone
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64 3 4747007 ext 9146
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Fax
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Email
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[email protected]
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Contact person for scientific queries
Name
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Dr. wayne sutherland phD
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Address
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Department of Medicine,
9th floor,
Dunedin hospital.
201 Great King Street
Dunedin 9016
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Country
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New Zealand
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Phone
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64 3 4747007 ext 8512
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Fax
2586
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Email
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[email protected]
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No information has been provided regarding IPD availability
What supporting documents are/will be available?
No Supporting Document Provided
Results publications and other study-related documents
Documents added manually
No documents have been uploaded by study researchers.
Documents added automatically
No additional documents have been identified.
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