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Protein selectivity: a prognostic index in IgA nephritis.
1Department of Renal Medicine, Singapore General Hospital, Republic of Singapore.
Nephron
|January 1, 1989
Summary
Protein selectivity in IgA nephritis impacts disease progression and treatment response. Nonselective proteinuria is linked to worse outcomes, while selective proteinuria may guide therapy, especially in nephrotic syndrome.
Area of Science:
- Nephrology
- Immunology
Background:
- IgA nephritis (IgAN) is a common glomerular disease.
- Proteinuria is a key feature of IgAN, but its characteristics may influence prognosis.
Purpose of the Study:
- To investigate the prognostic significance of protein selectivity in IgA nephritis.
- To evaluate the role of protein selectivity in patients with nephrotic syndrome.
Main Methods:
- Protein selectivity studies were performed on 98 patients with IgA nephritis.
- Patients were followed for 4 years, with assessments of glomerulosclerosis, creatinine clearance, hypertension, and chronic renal failure.
- Response to therapy was evaluated in patients with nephrotic syndrome.
Main Results:
- 54% of patients had nonselective proteinuria, associated with higher glomerulosclerosis, lower creatinine clearance, and increased hypertension and chronic renal failure.
- 46% had selective proteinuria, generally associated with better outcomes.
- In patients with nephrotic syndrome, selective proteinuria predicted a better response to steroid or cyclophosphamide therapy.
Conclusions:
- Protein selectivity is a valuable prognostic index in IgA nephritis.
- The selectivity index can fluctuate and serve as a monitoring tool.
- Protein selectivity may guide therapeutic decisions, particularly in IgA nephritis with nephrotic syndrome.