Clinical characteristics and WT1 genetic analysis of patients with steroid-resistant nephrotic syndrome accompanied with genitourinary malformations

OBJECTIVE: To analyze the clinical features and WT1 gene mutations in patients with steroid-resistant nephrotic syndrome (SRNS) accompanied with genitourinary malformations. The expression of podocyte molecules was also investigated in renal specimen of these WT1 mutated patients

Bibliographische Detailangaben
Veröffentlicht in:Zhonghua er ke za zhi = Chinese journal of pediatrics. - 1960. - 46(2008), 9 vom: 22. Sept., Seite 692-7
1. Verfasser: Li, Jian-guo (VerfasserIn)
Weitere Verfasser: Zhao, Dan, Ding, Jie, Xiao, Hui-jie, Fan, Qing-feng, Guan, Na, Chen, Yan, Zhang, Hong-wen
Format: Aufsatz
Sprache:Chinese
Veröffentlicht: 2008
Zugriff auf das übergeordnete Werk:Zhonghua er ke za zhi = Chinese journal of pediatrics
Schlagworte:Case Reports English Abstract Journal Article Research Support, Non-U.S. Gov't Steroids WT1 Proteins
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245 1 0 |a Clinical characteristics and WT1 genetic analysis of patients with steroid-resistant nephrotic syndrome accompanied with genitourinary malformations 
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500 |a Citation Status MEDLINE 
520 |a OBJECTIVE: To analyze the clinical features and WT1 gene mutations in patients with steroid-resistant nephrotic syndrome (SRNS) accompanied with genitourinary malformations. The expression of podocyte molecules was also investigated in renal specimen of these WT1 mutated patients 
520 |a METHODS: From January 2005 to May 2007, 3 cases of SRNS accompanied with genitourinary malformations were involved in this study. The expression of podocyte molecules (nephrin, podocin, alpha-actinin 4, WT1 and CD2AP) in 2 cases was analyzed by immunofluorescence and immunohistochemistry; using PCR to amplify genomic DNA and RT-PCR to amplify WT1 cDNA. GeneScan and GeneScan software were used to quantify the ratio of +KTS/-KTS isoforms 
520 |a RESULTS: The age of onset of the 3 cases were 6 months, 1 year and 10 years, respectively. The age at diagnosis was 7 months, 9 years and 15 years, respectively. The phenotype of case 1 and case 3 was male accompanied with genitourinary malformations. Case 2 was phenotypic female. Karyotype analysis of the 3 cases revealed 46, XY. Each case was diagnosed as SRNS. Focal segmental glomerulosclerosis (FSGS) was confirmed in 2 cases. Podocyte molecular expression altered in renal tissues of 2 cases. WT1 staining was negative in case 1. WT1 expression in case 2 showed a diffuse nuclear staining with less obvious speckles compared with controls. WT1 IVS 9 + 5 G > A mutation was detected in case 2 and WT1 exon 9 1186 G > A mutation was detected in case 3. No WT1 mutation was detected in case 1 
520 |a CONCLUSIONS: Karyotype analysis and WT1 genetic analyzing should be performed for all female patients with early onset SRNS and in male patients with SRNS accompanied with genitourinary malformations. The abnormal ratio of +KTS/-KTS isoforms caused by WT1 mutations along with abnormal expression of podocyte molecules were involved in the pathogenesis of proteinuria 
650 4 |a Case Reports 
650 4 |a English Abstract 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
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650 7 |a WT1 Proteins  |2 NLM 
700 1 |a Zhao, Dan  |e verfasserin  |4 aut 
700 1 |a Ding, Jie  |e verfasserin  |4 aut 
700 1 |a Xiao, Hui-jie  |e verfasserin  |4 aut 
700 1 |a Fan, Qing-feng  |e verfasserin  |4 aut 
700 1 |a Guan, Na  |e verfasserin  |4 aut 
700 1 |a Chen, Yan  |e verfasserin  |4 aut 
700 1 |a Zhang, Hong-wen  |e verfasserin  |4 aut 
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