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Trial registered on ANZCTR
Registration number
ACTRN12611000440921
Ethics application status
Approved
Date submitted
23/04/2011
Date registered
29/04/2011
Date last updated
29/04/2011
Type of registration
Retrospectively registered
Titles & IDs
Public title
the level of inflammation in eye of Patient with Diabetic Retinopathy
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Scientific title
Integrin CD18 Expression in Neutrophil Infiltrating the Vitreous Fluid in Patients with Diabetic Retinopathy
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Secondary ID [1]
260058
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Nil
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Universal Trial Number (UTN)
U1111-1120-9662
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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:
diabetic retinopathy
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Condition category
Condition code
Eye
265865
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0
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Diseases / disorders of the eye
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Metabolic and Endocrine
265889
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0
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Diabetes
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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
Vitreous samples was collected during the process of regular vitrectomy and were immediately placed in ice, centrifuged and separated into supernatants and cellular components. Surface expression of CD18 on the neutrophil infiltrated in the samples was analyzed with the flow cytometer immediately
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Intervention code [1]
264476
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Not applicable
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Comparator / control treatment
Vitreous samples were collected from idiopathic FTMH patients without diabetes(group A) , full thickness macular hole with diabetes (FTMH with diabetes, group B), non proliferative diabetic retinopathy (NPDR, group C), and proliferative diabetic retinopathy (PDR, group D).
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Control group
Active
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Outcomes
Primary outcome [1]
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Neutrophil and CD18 MCF of the vitreous samples from every group.The infiltrating of neutrophil and its surface level of CD18 were measured by flow cytometry.
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Assessment method [1]
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Timepoint [1]
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baseline
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Secondary outcome [1]
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Nil
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Assessment method [1]
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Timepoint [1]
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Nil
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Eligibility
Key inclusion criteria
To evaluated the levels of CD18 on the surface of neutrophil infiltrating the vitreous fluid in patients with full thickness macular hole without diabetes (FTMH without diabetes, group A), full thickness macular hole with diabetes (FTMH with diabetes, group B), non proliferative diabetic retinopathy (NPDR, group C), and proliferative diabetic retinopathy (PDR, group D).
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Minimum age
No limit
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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?
No
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Key exclusion criteria
Exclusion criteria for patients with CSMO were (i) posterior vitreous detachment diagnosed by the presence of a Weiss ring, (ii) macular traction as evidenced by retinal striae involving the foveal center, (iii) macular ischaemia as defined by an enlarged fovealar avascular zone (FAZ 41000 mm) or significant perifoveal capillary loss on fundus fluorescein angiography (FFA), and (iv) coexistent retinal disease.
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Study design
Purpose
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Duration
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Selection
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Timing
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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
13/11/2006
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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
50
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Accrual to date
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Final
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Recruitment outside Australia
Country [1]
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China
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State/province [1]
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Funding & Sponsors
Funding source category [1]
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Hospital
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Name [1]
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Xian NO.4 Hospital scientific funding
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Address [1]
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jiefang road, Xian city,shaanxi province,710004
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Country [1]
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China
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Primary sponsor type
Individual
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Name
Song Huping
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Address
Department of Ophthalmology, Xian NO.4 Hospital, Xian city,shaanxi province,710004
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Country
China
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Secondary sponsor category [1]
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Individual
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Name [1]
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Lei Chunling
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Address [1]
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Department of Ophthalmology, Xian NO.4 Hospital, Xian city,shaanxi province, 710004,
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Country [1]
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China
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Ethics approval
Ethics application status
Approved
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Summary
Brief summary
Background To evaluated the levels of CD18 on the surface of neutrophil infiltrating the vitreous fluid in patients with full thickness macular hole without diabetes (FTMH without diabetes, group A), full thickness macular hole with diabetes (FTMH with diabetes, group B), non proliferative diabetic retinopathy (NPDR, group C), and proliferative diabetic retinopathy (PDR, group D). Method Vitreous samples from twelve patients of group A representing controls were analyzed together with the vitreous samples of 12 patients of group B, 14 patients of group C and 19 patients of group D. The infiltrating of neutrophil and its surface level of CD18 were measured by flow cytometry. The level of CD18 was presented as the mean channel fluorescence (MCF) on a logarithmic scale. Results Neutrophil were detected in none of the 12 vitreous samples from group A patients, in 6(50%) of the 12 vitreous samples from group B patients, in 9 (64%) of the 14 vitreous samples from group C patients and in 15(78%) of the 19 vitreous samples from group D patients. CD18 MCF on neutrophil from group B, C, and D were 2.978±1.446, 3.201±0.692, and 4.072±0.837, respectively. The difference among them was significant (F = 4.354, P = 0.021). Subjects with more severe DR were more likely to have a higher level of CD18 MCF (trend test, P = 0.007). The level of CD18 MCF was significantly associated with the development of DR not only by simple correlation analysis (r = 0.46,P = 0.005) but also by stepwise multiple linear regression analysis (beta = 0.147, P = 0.035). Other clinical parameters, including FPG, SBP, and HDLc, were also significantly associated with CD18 MCF by stepwise multiple linear regression analysis (P = 0.002, 0.011, and 0.009, respectively). Conclusion Our results confirm the contribution of neutrophil activation in the development of DR. Neutrophil activation may be served as a new target for the treatment of DR.
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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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Song Huping
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Address
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Department of Ophthalmology, Xian NO.4 Hospital, Xian city,shaanxi province,710004.
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Country
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China
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Phone
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+86 29 87480682(for xian, china)
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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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Song Huping
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Address
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Department of Ophthalmology, Xian NO.4 Hospital, Xian city,shaanxi province,710004.
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Country
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China
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Phone
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+86 29 87480682(for xian, china)
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Fax
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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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