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Crescentic glomerulonephritis in juvenile chronic arthritis
M Dhib1, A M Prieur, S Courville
1Centre Hospitalier Universitaire de Rouen, Paris, France.
The Journal of Rheumatology
|September 1, 1996
Summary
Juvenile chronic arthritis can present with kidney complications. Antineutrophil cytoplasmic antibodies (ANCA) indicate anti-myeloperoxidase (MPO) vasculitis affecting the kidneys in these patients.
Area of Science:
- Rheumatology
- Nephrology
- Immunology
Background:
- Juvenile chronic arthritis (JCA) is a complex autoimmune condition.
- Renal involvement in JCA can be severe and challenging to manage.
Observation:
- Two young female patients with JCA developed significant renal complications.
- One patient presented with erosive polyarthritis, positive antinuclear antibodies (ANA), and later developed severe renal insufficiency with positive antineutrophil cytoplasmic antibodies (ANCA) of anti-myeloperoxidase (MPO) specificity and crescentic glomerulonephritis.
- The second patient had polyarthritis, positive rheumatoid factors, microscopic hematuria, and ANCA of anti-MPO specificity associated with crescentic glomerulonephritis.
Findings:
- Both patients exhibited ANCA of anti-MPO specificity, correlating with severe crescentic glomerulonephritis.
- Treatment responses varied, with one patient requiring hemodialysis despite immunosuppression, while the other achieved stable renal function with moderate proteinuria.
Implications:
- This study highlights the potential for renal microscopic angiitis with ANCA of anti-MPO specificity in JCA.
- Early detection and monitoring for renal involvement in JCA are crucial.
- Understanding ANCA-associated vasculitis in pediatric arthritis may improve patient outcomes.