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Urothelial differentiation in vesicoureteric reflux and other urological disorders of childhood: a comparative study.

Abstract：

OBJECTIVE:The strong familial basis of vesicoureteric reflux (VUR) is well recognised, however little progress has been made in identifying the causative genes. In this study we have investigated whether human vesicoureteric reflux (VUR) is associated with the aberrant expression of urothelial differentiation-associated antigens in view of the VUR phenotype of the Uroplakin IIIa (UPIIIa) "knockout" mouse. METHODS:Samples of urothelium were collected from 13 children with primary VUR, four children with secondary VUR and from seven children with non-refluxing disorders of the urinary tract. Immunohistochemistry was used to assess the expression of five uroplakin (UP) and cytokeratin (CK) differentiation-restricted antigens, UPIa, UPIb, UPIIIa, CK13 and CK20. Samples were ranked blind according to immunohistochemical patterns relating to the differentiation-associated distributions of the five antigens and the results were analysed statistically using the Kruskal-Wallis test. RESULTS:No objective differences in urothelial morphology or the expression of the five differentiation antigens were discernable in the urothelium of children with primary VUR, when compared with urothelium of children with a range of other pathology including VUR associated with duplication or pelvic renal ectopia, VUR secondary to outflow obstruction and non-refluxing upper tract obstruction. The p-values ranged from 0.168-0.651 and were not considered statistically significant. CONCLUSION:The results indicate that primary VUR is not associated with any major, collective abnormality of urothelial differentiation in man. In particular our findings provide no support for the suggestion that abnormalities of UPIIIa expression are implicated in the aetiology of human primary VUR.

journal_name

Eur Urol

journal_title

European urology

authors

Garthwaite MA,Thomas DF,Subramaniam R,Stahlschmidt J,Eardley I,Southgate J

doi

10.1016/j.eururo.2005.08.018

keywords:

subject

Has Abstract

pub_date

2006-01-01 00:00:00

pages

154-9, 159-60

issue

1

eissn

0302-2838

issn

1873-7560

pii

S0302-2838(05)00527-0

journal_volume

49

pub_type

杂志文章

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