Focal segmental glomerulosclerosis associated with mitochondrial cytopathy: report of two cases with special emphasis on podocytes.
Pediatr Dev Pathol
; 8(6): 710-7, 2005.
Article
em En
| MEDLINE
| ID: mdl-16328667
ABSTRACT
We report two children with focal segmental glomerulosclerosis (FSGS) associated with mitochondrial cytopathy (MC). Case 1 was diagnosed as MC with the findings of ptosis, ophthalmoplegia, failure to thrive, high serum lactate and pyruvate levels, ragged red fibers in muscle biopsy and the common 4.9 kb deletion in mtDNA when she was four years old. She subsequently developed FSGS four years later. Case 2 was a four month-old girl presenting with feeding difficulty from birth, with vomiting, seizures and nystagmoid eye movements, nephrotic proteinuria and hematuria. Renal biopsy revealed FSGS. Ultrastructural study demonstrated markedly pleomorphic mitochondria in podocytes with a severe effacement of foot processes. The analyses of muscle biopsy and skin fibroblasts for respiratory chain enzymes were found to be normal, while mitochondrial DNA analysis revealed the population of a single deleted mtDNA in the heteroplasmic state. The present cases illustrate FSGS as a rare renal complication of mitochondrial disease and provide further evidence of podocytes possessing abnormal mitochondria which may cause glomerular epithelial cell damage leading to glomerulosclerosis.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Glomerulosclerose Segmentar e Focal
/
Doenças Mitocondriais
/
Podócitos
Tipo de estudo:
Risk_factors_studies
Limite:
Child
/
Female
/
Humans
/
Infant
Idioma:
En
Revista:
Pediatr Dev Pathol
Assunto da revista:
PATOLOGIA
/
PEDIATRIA
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Turquia
País de publicação:
EEUU
/
ESTADOS UNIDOS
/
ESTADOS UNIDOS DA AMERICA
/
EUA
/
UNITED STATES
/
UNITED STATES OF AMERICA
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US
/
USA