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Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice
Published on: June 8, 2022
C1q nephropathy and minimal change nephrotic syndrome
Craig S Wong1, Christopher A Fink, Jane Baechle
1Department of Pediatrics, Division of Nephrology, University of New Mexico School of Medicine, MSC-10 5590, 1 University New Mexico, Albuquerque, NM 87131, USA.
Pediatric Nephrology (Berlin, Germany)
|December 17, 2008
Summary
C1q nephropathy (C1qN) in children often presents with minimal change nephrotic syndrome. C1qN patients may require advanced immunosuppression but can achieve sustained remission and stable kidney function.
Area of Science:
- Nephrology
- Pediatric Nephrology
- Immunopathology
Background:
- C1q nephropathy (C1qN) is a rare kidney disorder.
- It is associated with nephrotic syndrome and various glomerular pathologies.
- C1q deposition in the mesangium is a key characteristic.
Purpose of the Study:
- To describe clinical features and outcomes of children with minimal change nephrotic syndrome (MCNS) and mesangial C1q deposition.
- To compare these patients with concurrent MCNS patients without C1q deposition.
- To evaluate treatment responses and long-term renal function in C1qN.
Main Methods:
- Retrospective case series of nine children with MCNS and C1q deposition.
- Comparison with a cohort of children with biopsy-proven MCNS.
- Analysis of demographic data, clinical presentation, treatment, and renal outcomes.
Main Results:
- The study group comprised nine children (median age 2.7 years; 56% male; 78% Hispanic).
- C1qN patients showed a higher likelihood of requiring chronic immunosuppression (calcineurin inhibitors or mycophenolate mofetil).
- All children achieved and sustained clinical remission of nephrotic syndrome.
Conclusions:
- Children with C1qN and minimal change histology often experience frequently relapsing and steroid-unresponsive nephrotic syndrome.
- Effective long-term remission and stable renal function are achievable with calcineurin inhibitors or mycophenolate mofetil therapy.
- C1qN represents a distinct entity within MCNS requiring tailored immunosuppressive strategies.
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