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[Nephropathy in patients with mixed connective tissue disease]
A Yoshida1, K Morozumi, A Takeda
1Division of Nephrology, Nagoya Daini Red Cross Hospital.
Ryumachi. [Rheumatism]
|December 1, 1994
Summary
Kidney complications, or nephropathy, are common in patients with mixed connective tissue disease (MCTD), affecting 35.3% of those studied. Immune-complex glomerulonephritis in MCTD patients may indicate a transition to systemic lupus erythematosus (SLE).
Area of Science:
- Nephrology
- Rheumatology
- Pathology
Context:
- Mixed connective tissue disease (MCTD) is a systemic autoimmune disorder.
- Nephropathy was previously considered a rare complication of MCTD.
- Recent studies suggest a higher prevalence of kidney involvement in MCTD patients.
Purpose:
- To investigate the histopathological findings of nephropathy in patients with MCTD.
- To determine the prevalence and types of kidney disease in MCTD.
- To explore potential links between MCTD, nephropathy, and systemic lupus erythematosus (SLE).
Summary:
- This study examined 17 patients with MCTD and kidney involvement.
- Clinical features included nephrotic syndrome, hematuria, and proteinuria.
- Pathological findings revealed various glomerulonephritis types, including membranous nephropathy and IgA nephropathy.
Impact:
- Nephropathy is a significant complication in MCTD, affecting 35.3% of patients in this cohort.
- Three patients transitioned to SLE during follow-up, sharing hypocomplementemia and membranous nephropathy.
- MCTD patients with immune-complex glomerulonephritis may be at higher risk of developing SLE.