Journal Article

Pathogenesis of dysplastic kidney associated with urinary tract obstruction <i>in utero</i>

Michio Nagata, Sawako Shibata and Yujin Shu

in Nephrology Dialysis Transplantation

Published on behalf of European Renal Association - European Dialysis and Transplant Assoc

Volume 17, issue suppl_9, pages 37-38
Published in print September 2002 | ISSN: 0931-0509
Published online September 2002 | e-ISSN: 1460-2385 | DOI:
Pathogenesis of dysplastic kidney associated with urinary tract obstruction in utero

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Renal dysplasia is the major cause of chronic renal failure in children, and is commonly associated with urinary tract obstruction. There are two phenotypes of renal dysplasia associated with urinary tract abnormality, multicystic dysplastic kidney (MCDK) and obstructive dysplasia (ORD). Previous observations by Potter and co‐workers suggested that cystic dilatation of the ureteric bud ampula was the cause of renal dysplasia. In this context, our recent investigation of human fetal dysplastic kidneys provided an alternative explanation for the evolution of renal dysplasia. We suggested that in utero urinary tract obstruction may cause urine retention in functioning nephrons and lead to glomerular cysts in the nephrogenic zone. The mechanism was common to MCDK and ORD, albeit at different sites of obstruction. Expansion of glomerular cysts with tubular dilatation (cysts) disturbs the subsequent nephron induction and may contribute to the abnormal development of fetal kidneys.

Keywords: dysplasia; glomerular cysts; kidney; nephrogenesis; urinary tract obstruction

Journal Article.  0 words. 

Subjects: Nephrology

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