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Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice
09:43

Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice

Published on: June 8, 2022

The combination of thrombotic microangiopathy and nodular sclerosis in light chain deposition disease

Talerngsak Kanjanabuch1, Rati Bunruang, Nattachai Srisawat

  • 1Division of Nephrology, Department of Medicine, Faculty of Medicine, Chulalongkorn University Hospital, Bangkok, Thailand. golfnephro@hotmail.com

Journal of the Medical Association of Thailand = Chotmaihet Thangphaet
|October 19, 2006
PubMed

Insights

This study details a rare case of kidney disease in a Thai man, revealing simultaneous nodular glomerulosclerosis, mesangiolysis, and thrombotic microangiopathy. These findings offer new insights into glomerular injury in monoclonal immunoglobulin deposition disease.

Area of Science:

  • Nephrology
  • Pathology
  • Oncology

Background:

  • Light chain deposition disease (LCDD) is a kidney disease often associated with plasma cell disorders like multiple myeloma.
  • Monoclonal gammopathy, specifically kappa light chains, plays a crucial role in the pathogenesis of LCDD.
  • Understanding the diverse renal manifestations of LCDD is essential for accurate diagnosis and management.

Observation:

  • A 69-year-old Thai man presented with edema, hypertension, and renal insufficiency.
  • Bone marrow biopsy confirmed multiple myeloma with kappa monoclonal gammopathy.
  • Renal biopsy revealed type II nodular glomerulosclerosis, tubular basement membrane abnormalities, and kappa light chain deposition.

Findings:

  • Concomitant mesangiolysis and thrombotic microangiopathy were observed alongside characteristic LCDD findings.
  • Type II nodular sclerosis and thrombotic microangiopathy appeared to originate from the same cellular injury.
  • This co-occurrence provides a unique perspective on glomerular injury mechanisms in LCDD.

Implications:

  • The shared cellular injury mechanism may elucidate the pathogenesis of glomerular damage in monoclonal immunoglobulin deposition disease (MIDD).
  • This case highlights the complex interplay between multiple myeloma, monoclonal gammopathy, and distinct patterns of kidney injury.
  • Further research into these specific injury pathways could lead to novel therapeutic strategies for MIDD.

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