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Trial details imported from ClinicalTrials.gov
For full trial details, please see the original record at
https://clinicaltrials.gov/study/NCT01505803
Registration number
NCT01505803
Ethics application status
Date submitted
25/10/2011
Date registered
9/01/2012
Date last updated
9/01/2012
Titles & IDs
Public title
The Effect of a Nutritional Supplement in Individuals With Type 2 Diabetes Mellitus: a Pilot Study
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Scientific title
The Effect of a Nutritional Supplement on Cardiometabolic, Inflammatory, and Oxidative Stress Markers in Individuals With Type 2 Diabetes Mellitus: a Pilot Study
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Secondary ID [1]
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HREC 12392
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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:
Diabetes Mellitus, Type 2
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Insulin Resistance
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Condition category
Condition code
Metabolic and Endocrine
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Diabetes
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Intervention/exposure
Study type
Interventional
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Description of intervention(s) / exposure
Treatment: Other - Zinc supplements
Treatment: Other - Omega 3 supplements
Treatment: Other - Placebo supplements
Active comparator: Zinc supplement -
Active comparator: Omega 3 supplement -
Active comparator: Zinc and omega 3 supplements -
Placebo comparator: Placebo supplement -
Treatment: Other: Zinc supplements
Participants will receive 40 mg of zinc each day for 12 weeks.
Treatment: Other: Omega 3 supplements
Participants will receive 2 g of omega 3 fatty acids each day for 12 weeks.
Treatment: Other: Placebo supplements
Participants will receive placebo supplements each day for 12 weeks.
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Intervention code [1]
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Treatment: Other
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Comparator / control treatment
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Control group
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Outcomes
Primary outcome [1]
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Plasma lipids (total cholesterol, HDL cholesterol, LDL cholesterol, triglycerides)
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Assessment method [1]
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Timepoint [1]
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12 weeks
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Primary outcome [2]
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Glycaemic control (glucose, insulin, HbA1c)
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Assessment method [2]
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Timepoint [2]
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12 weeks
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Primary outcome [3]
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Inflammation & oxidative stress (CRP, TNF-a, IL-1, IL-2, IL-6, IL-10 F2 isoprostanes, NF-?B, MPO, other)
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Assessment method [3]
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Timepoint [3]
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12 weeks
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Secondary outcome [1]
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Zinc transporter mRNA expression in peripheral blood mononuclear cells
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Assessment method [1]
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Timepoint [1]
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12 weeks
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Secondary outcome [2]
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Plasma zinc
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Assessment method [2]
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Timepoint [2]
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12 weeks
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Secondary outcome [3]
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Plasma fatty acids
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Assessment method [3]
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Timepoint [3]
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12 weeks
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Eligibility
Key inclusion criteria
* Female, postmenopausal
* Type 2 diabetes (controlled by diet and lifestyle; or oral hypoglycaemic medication (i.e. metformin) for not more than 7 years)
* Normal Glomerular Filtration Rate (GFR) and normal microalbumin/creatine ratio
* No nutritional supplements in the 6 weeks prior to the trial & continuing through the trial period
* Non-smoking
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Minimum age
48
Years
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Maximum age
No limit
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Sex
Females
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Can healthy volunteers participate?
No
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Key exclusion criteria
* Diagnosed with current major illness (renal disease, significant cardiovascular disease, gastrointestinal disorders, cancer, or other significant disorder likely to interfere with zinc metabolism)
* Taking medications that are likely to interfere with zinc metabolism
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Study design
Purpose of the study
Treatment
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Allocation to intervention
Randomised controlled 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
Blinded (masking used)
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Who is / are masked / blinded?
The people receiving the treatment/s
The people assessing the outcomes
The people analysing the results/data
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Intervention assignment
Parallel
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Other design features
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Phase
Phase 1
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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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Data analysis
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Reason for early stopping/withdrawal
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Other reasons
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Date of first participant enrolment
Anticipated
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Actual
1/07/2010
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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
1/12/2011
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Sample size
Target
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Accrual to date
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Final
48
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Recruitment in Australia
Recruitment state(s)
NSW
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Recruitment hospital [1]
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University of Sydney - Sydney
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Recruitment postcode(s) [1]
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2006 - Sydney
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Funding & Sponsors
Primary sponsor type
Other
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Name
University of Sydney
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Address
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Country
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Ethics approval
Ethics application status
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Summary
Brief summary
Diabetes Mellitus (DM) is a major risk factor for cardiovascular disease, with 50% of diabetes-associated deaths being attributed to cardiovascular complications. The characterising features of DM include: the presence of chronic hyperglycaemia, consequent upon decreased secretion or action of insulin; dyslipidaemia; and enhanced levels of oxidative stress and inflammation. Zinc and omega 3 polyunsaturated fatty acids have been shown to influence each of these outcomes via several mechanisms. This pilot study will examine the effect of nutritional supplements containing zinc and omega 3 on these outcomes in a population with type 2 DM.
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Trial website
https://clinicaltrials.gov/study/NCT01505803
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Trial related presentations / publications
Foster M, Petocz P, Samman S. Effects of zinc on plasma lipoprotein cholesterol concentrations in humans: a meta-analysis of randomised controlled trials. Atherosclerosis. 2010 Jun;210(2):344-52. doi: 10.1016/j.atherosclerosis.2009.11.038. Epub 2009 Nov 29. Foster M, Samman S. Zinc and redox signaling: perturbations associated with cardiovascular disease and diabetes mellitus. Antioxid Redox Signal. 2010 Nov 15;13(10):1549-73. doi: 10.1089/ars.2010.3111. Foster M, Hancock D, Petocz P, Samman S. Zinc transporter genes are coordinately expressed in men and women independently of dietary or plasma zinc. J Nutr. 2011 Jun;141(6):1195-201. doi: 10.3945/jn.111.140053. Epub 2011 Apr 13.
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Public notes
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Contacts
Principal investigator
Name
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Samir Samman
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Address
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University of Sydney
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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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Address
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Phone
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Fax
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Email
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Contact person for scientific queries
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
No documents have been uploaded by study researchers.
Results not provided in
https://clinicaltrials.gov/study/NCT01505803
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