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Trial registered on ANZCTR
Registration number
ACTRN12610000141044
Ethics application status
Approved
Date submitted
8/02/2010
Date registered
11/02/2010
Date last updated
11/02/2010
Type of registration
Retrospectively registered
Titles & IDs
Public title
Assessment of the impact of nephrectomy on
cardiovascular risk in living kidney donors:
longitudinal follow-up. Focus on endothelial
dysfunction, inflammation and oxidative stress.
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Scientific title
Assessment of the impact of nephrectomy on
cardiovascular risk in living kidney donors:
longitudinal follow-up. Focus on endothelial
dysfunction, inflammation and oxidative stress.
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Secondary ID [1]
1397
0
None
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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:
Cardiovascular disease
256782
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Condition category
Condition code
Renal and Urogenital
256927
256927
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0
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Other renal and urogenital disorders
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Intervention/exposure
Study type
Observational
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Patient registry
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Target follow-up duration
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Target follow-up type
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Description of intervention(s) / exposure
The aim of this study is to assess the impact of nephrectomy on cardiovascular risk factors and vascular function, with emphasis on early markers of vasuclar disease including endothelial dysfunction, oxidative
stress and inflammation. Specifically, we will scrutinize the following features of early vascular disease:
Inflammation: hsC-reactive protein, Interleukin-6 (IL-6)
Endothelial dysfunction: Brachial Artery Reactivity
Smooth muscle dysfunction: Pulse Wave Velocity
Oxidative stress:Plasma, urinary 8-iso-prostaglandin 2 and oxidized low density lipoprotein (LDL)
Vascular structure: Carotid intima-media thickness
We will also collect data relevant to features of metabolic syndrome including triglyceride, High Density Lipoprotein, waist-hip ratio and fasting glucose, to determine the association between renal and cardiac function and traditional cardiovascular risk factors. All patients will be reviewed in outpatient clinic every 12 months for a total of 5 years. Data on vascular imaging studies will be collected at baseline and annually. Glomerular filtration rate will be estimated at baseline and annually using 24 hour urine collection, Modification of renal diet (MDRD) and 51Cr-Chromium-51 Ethylenediamine Tetraacetic acid (EDTA) nuclear scan. 24 hour urine collection will be used to measure urinary protein and albumin excretion. All cardiovascular events, admissions, biochemical and clinical data will be recorded at specific annually at time of follow up.
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Intervention code [1]
255986
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Not applicable
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Comparator / control treatment
A control group already established within the Centre of Clinical Research and Excellence (CCRE), matched for age and gender will be approached for comparative purposes.
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Control group
Active
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Outcomes
Primary outcome [1]
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Carotid intima media thickness (ultrasound of vascular structure)
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Assessment method [1]
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Timepoint [1]
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This study is planned for 5 years with baseline and subsequent review every 12 months.
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Secondary outcome [1]
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Brachial artery reactivity (ultrasound of vascular function)
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Assessment method [1]
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Timepoint [1]
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Baseline and every 12 months for 5 years
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Eligibility
Key inclusion criteria
Patients who fulfill the live donation selection process and successfully complete donor nephrectomy
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Minimum age
18
Years
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Maximum age
No limit
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Sex
Both males and females
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Can healthy volunteers participate?
Yes
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Key exclusion criteria
Patients from areas in Queensland where follow up vascular studies can not be carried out for logistic reasons.
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Study design
Purpose
Natural history
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Duration
Longitudinal
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Selection
Defined population
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Timing
Prospective
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Statistical methods / analysis
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Recruitment
Recruitment status
Recruiting
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Date of first participant enrolment
Anticipated
23/08/2007
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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
120
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Accrual to date
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Final
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Recruitment in Australia
Recruitment state(s)
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Funding & Sponsors
Funding source category [1]
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Government body
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Name [1]
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National Health and Medical Research Council (NHMRC) (CCRE - Centres of Clinical Research Excellence)
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Address [1]
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The University of Queensland Brisbane QLD 4072 Australia
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Country [1]
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Australia
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Primary sponsor type
University
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Name
University of Queensland
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Address
The University of Queensland Brisbane QLD 4072 Australia
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Country
Australia
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Secondary sponsor category [1]
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Hospital
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Name [1]
255802
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Nephrology Department, Princess Alexandra Hospital
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Address [1]
255802
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Ipswich Road, Woolloongabba Qld 4102
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Country [1]
255802
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Australia
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Ethics approval
Ethics application status
Approved
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Ethics committee name [1]
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Princess Alexandra Hospital
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Ethics committee address [1]
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Ipswich Road, Woolloongabba Qld 4102
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Ethics committee country [1]
258540
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Australia
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Date submitted for ethics approval [1]
258540
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Approval date [1]
258540
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Ethics approval number [1]
258540
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2007/078
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Summary
Brief summary
The aim of this study is to assess the impact of nephrectomy on cardiovascular risk factors and vascular function, with emphasis on early markers of vasuclar disease including endothelial dysfunction, oxidative stress and inflammation. The follow-up studies of donor safety are flawed by being retrospective and with significant loss to follow-up. The numbers of patients who have died or have significant cardiovascular disease have not been adequately assessed. In the general population any degree of renal impairment, eGFR < 60mls/min (Glomerular filtration rate) is independently associated with an increase in cardiovascular risk, death and hospitalization. Retrospective analysis or our cohort of live donors over the last 15 years (up till 2005) revealed that 39% of respondents had stage 2 (eGFR 15 -30mls/min) chronic kidney disease. We hypothesize that donors, post nephrectomy with the associated decrement in GFR may be at increased risk of future vascular disease. Specifically, we will scrutinize the following features of early vascular disease: Inflammation: hsC-reactive protein, IL-6 Endothelial dysfunction: Brachial Artery Reactivity ) Smooth muscle dysfunction: Pulse Wave Velocity Oxidative stress:Plasma, urinary 8-iso-prostaglandin 2 and oxidized LDL Vascular structure: Carotid intima-media thickness We will also collect data relevant to features of metabolic syndrome including triglyceride, High Density Lipoprotein, waist-hip ratio and fasting glucose, to determine the association between renal and cardiac function and traditional cardiovascular risk factors. This is a 5 year longituidinal study of live donors. All patients will be reviewed in outpatient clinic every 12 months. Data on vascular imaging studies will be collected at baseline and annually. Glomerular filtration rate will be estimated at baseline and annually using 24 hour urine collection, MDRD and 51Cr-EDTA nuclear scan. 24 hour urine collection will be used to measure urinary protein and albumin excretion. All cardiovascular events, admissions, biochemical and clinical data will be recorded at specific annually at time of follow up. A control group (already established within the CCRE), matched for age and gender will be approached for comparative purposes.
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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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Dr Nicole Isbel
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Address
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Nephrology department, Princess Alexandra Hospital, Ipswich Road, Woolloongabba Qld 4102
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Country
14063
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Australia
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Phone
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+61 7 3240 5080
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Fax
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+61 7 3240 5480
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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 Nicole Isbel
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Address
4991
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Nephrology department, Princess Alexandra Hospital, Ipswich Road, Woolloongabba Qld 4102
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Country
4991
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Australia
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Phone
4991
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+61 7 3240 5080
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Fax
4991
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+61 7 3240 5480
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Email
4991
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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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