[Expression of glomerular heparan sulfate domains in pediatric patients with minimal change nephrotic syndrome].
OBJECTIVE
To investigate the expression of glomerular heparin sulfate (HS) in paediatric patients with minimal change nephritic syndrome (MCNS).


METHODS
The kidyney tissues were collected by biopsy from 13 paediatric patients with MCNS, while 5 normal renal biopsy samples were used as control. HS in glomeruli was analysed by indirect immunofluorescence staining using four different monoclonal antibodies, Hepss1, 3G10, JM403 and 10E4, which all recognize distinct HS species and each interacts with a specific HS domain. The concentrations of urine heparan sulfate also were measured by enzyme-linked immunosorbent assay (Elisa).


RESULTS
Expression of HS fine domains was aberrant in paediatric patients compared with control subjects. Children with MCNS in replase showed a decreased glomerular expression of 10E4, JM403 and Hepss1 (P < 0.05). The level of urinary HS was significantly increased in peadiatric patients with MCNS when compared with that in control subjects (P < 0.01).


CONCLUSIONS
These results suggest that loss of heparan sulphate in renal tissue may play a role in the pathogenesis of MCNS proteinuria.
Dong
Li-Qun
LQ
Department of Pediatrics, West China Second Hospital, Sichuan University, Chengdu 610041, China.
Wang
Zheng
Z
Yu
Ping
P
Guo
Yan-Nan
YN
Wu
Jin
J
Feng
Shi-Pin
SP
Li
Sha
S
D000911:Antibodies, Monoclonal; D016022:Case-Control Studies; D002648:Child; D005260:Female; D006497:Heparan Sulfate / Q000378:metabolism* / Q000652:urine; D006801:Humans; D007678:Kidney Glomerulus / Q000378:metabolism*; D008297:Male; D009404:Nephrotic Syndrome / Q000378:metabolism*
D000911:Antibodies, Monoclonal; D006497:Heparan Sulfate