[Relationship between integrin-linked kinase expression and renal glomerular damage in children with Henoch-Schnlein purpura nephritis].
OBJECTIVE
Recent studies have shown that integrin linked kinase (ILK) plays an important role in the pathogenesis and development of some kidney diseases. This study aimed to investigate the relationship between ILK and renal glomerular damage in children with Henoch schonlein purpura nephritis (HSPN).


METHODS
One hundred and eighty eight HSPN children (aged 3 to 17 years) were assigned to five groups according to the classification of the International Study of Kidney Disease in Children (ISKDC): grade < or = IIa (n = 62), grade IIb (n = 42), grade IIIa (n = 29), grade IIIb (n = 40) and grade > or = IV (n = 15). Fifteen children with basement membrane nephropathy served as the control group. ILK expression on glomeruli was ascertained by immunohistochemical staining. The relationships of ILK expression on glomeruli with glomerular histopathologic lesions and urinary protein excretions were examined.


RESULTS
The positive areas of ILK expression on glomeruli in the control, grade < or = IIa, grade IIb, grade IIIa, grade IIIb and grade > or = IV groups were (3.35 + or - 1.01)%, (4.88 + or - 1.13)%, (9.64 + or - 1.36)%, (11.27 + or - 1.68)%, (17.42 + or -3.0)% and (20.62 + or - 2.32%), respectively. There were significant differences in the ILK expression between groups (p<0.01). ILK expression on glomeruli increased with increased urinary protein excretions. There were significant differences in the ILK expression in children with different urinary protein excretions (p<0.01).


CONCLUSIONS
ILK might be involved in the process of renal glomerular histopathologic damage and the production of proteinuria in children with HSPN.
Li
Zhi-Hui
ZH
Department of Nephrology, Hunan Children's Hospital, Changsha 410007, China. lizh0731@yahoo.com.cn
Zhang
Yi
Y
Yin
Yan
Y
He
Jin-Hua
JH
Duan
Cui-Rong
CR
Xun
Mai
M
Liu
Zhi-Qun
ZQ
D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D011695:IgA Vasculitis / Q000201:enzymology* / Q000473:pathology*; D007150:Immunohistochemistry; D007678:Kidney Glomerulus / Q000473:pathology*; D008297:Male; D009393:Nephritis / Q000201:enzymology* / Q000473:pathology*; D017346:Protein Serine-Threonine Kinases / Q000032:analysis*; D000099200:Scaffold Protein ILK
D017346:Protein Serine-Threonine Kinases; D000099200:Scaffold Protein ILK