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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

Proteinuria in a boy with infectious mononucleosis, C1q nephropathy, and Dent's disease

In Seok Lim1, Ki Wook Yun, Kyung Chul Moon

  • 1Department of Pediatrics, Chungang University Yongsan Hospital, Seoul, Korea. inseok@cau.ac.kr

Journal of Korean Medical Science
|November 6, 2007
PubMed

Insights

C1q nephropathy, a kidney disease, was observed in a child with Epstein-Barr virus (EBV) infection and a family history of Dent's disease. Genetic analysis revealed a mutation linked to Dent's disease, complicating the EBV link.

Area of Science:

  • Nephrology
  • Genetics
  • Virology

Background:

  • C1q nephropathy is characterized by mesangial C1q deposition.
  • Epstein-Barr virus (EBV) infection can trigger various clinical manifestations.
  • Dent's disease is an X-linked renal disorder caused by CLCN5 gene mutations.

Observation:

  • A pediatric patient presented with nephrotic-range proteinuria during an acute EBV infection.
  • Renal biopsy confirmed C1q nephropathy.
  • EBV in situ hybridization was negative, and CLCN5 gene analysis identified an R637X mutation.

Findings:

  • The patient's mutation was identical to that in a maternal cousin with Dent's disease.
  • The direct causal link between EBV infection and C1q nephropathy in this case is uncertain.
  • The influence of underlying Dent's disease on C1q nephropathy requires further investigation.

Implications:

  • This case highlights the complex interplay between viral infections, genetic predispositions, and kidney disease.
  • Understanding the genetic basis of Dent's disease is crucial for managing related renal pathologies.
  • Further research is needed to elucidate the pathogenesis of C1q nephropathy in the context of EBV and genetic mutations.

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