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Urinary CD80 excretion increases in idiopathic minimal-change disease
Eduardo H Garin1, Leila N Diaz, Wei Mu
1Division of Pediatric Nephrology, University of Florida, Gainesville, FL 32610, USA. garineh@peds.ufl.edu
Journal of the American Society of Nephrology : JASN
|December 6, 2008
Summary
Urinary soluble CD80 levels are significantly elevated in patients experiencing active idiopathic minimal-change disease (MCD). This finding suggests soluble CD80 may play a role in MCD pathogenesis and could aid in diagnosis.
Area of Science:
- Nephrology
- Immunology
Background:
- CD80 is expressed on antigen-presenting cells and podocytes in experimental nephrotic syndrome models.
- Its role in idiopathic minimal-change disease (MCD) is not fully understood.
Purpose of the Study:
- To investigate urinary soluble CD80 levels in patients with active MCD compared to other kidney diseases and healthy controls.
- To assess the potential diagnostic and pathogenetic relevance of urinary soluble CD80 in MCD.
Main Methods:
- Collected and analyzed urine and serum samples from patients with MCD (relapse and remission), other glomerular diseases, systemic lupus erythematosus, and healthy controls.
- Measured urinary and serum concentrations of soluble CD80 and soluble CTLA-4.
- Calculated the urinary soluble CD80/CTLA-4 ratio.
Main Results:
- Urinary soluble CD80 was significantly higher in patients with relapsed MCD versus those in remission, other glomerular diseases, and controls.
- Urinary soluble CTLA-4 levels did not differ between relapsed and remitted MCD.
- The urinary soluble CD80/CTLA-4 ratio was markedly elevated in relapsed MCD.
Conclusions:
- Urinary soluble CD80 is elevated in active idiopathic MCD.
- Elevated urinary soluble CD80 may be a valuable biomarker for MCD diagnosis and understanding its pathogenesis.
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