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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+One
2015 ; 10
(8
): e0136994
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Molecular Markers of Tubulointerstitial Fibrosis and Tubular Cell Damage in
Patients with Chronic Kidney Disease
#MMPMID26317775
Nakagawa S
; Nishihara K
; Miyata H
; Shinke H
; Tomita E
; Kajiwara M
; Matsubara T
; Iehara N
; Igarashi Y
; Yamada H
; Fukatsu A
; Yanagita M
; Matsubara K
; Masuda S
PLoS One
2015[]; 10
(8
): e0136994
PMID26317775
show ga
In chronic kidney disease (CKD), progressive nephron loss causes glomerular
sclerosis, as well as tubulointerstitial fibrosis and progressive tubular injury.
In this study, we aimed to identify molecular changes that reflected the
histopathological progression of renal tubulointerstitial fibrosis and tubular
cell damage. A discovery set of renal biopsies were obtained from 48 patients
with histopathologically confirmed CKD, and gene expression profiles were
determined by microarray analysis. The results indicated that hepatitis A virus
cellular receptor 1 (also known as Kidney Injury Molecule-1, KIM-1), lipocalin 2
(also known as neutrophil gelatinase-associated lipocalin, NGAL), SRY-box 9, WAP
four-disulfide core domain 2, and NK6 homeobox 2 were differentially expressed in
CKD. Their expression levels correlated with the extent of tubulointerstitial
fibrosis and tubular cell injury, determined by histopathological examination.
The expression of these 5 genes was also increased as kidney damage progressed in
a rodent unilateral ureteral obstruction model of CKD. We calculated a molecular
score using the microarray gene expression profiles of the biopsy specimens. The
composite area under the receiver operating characteristics curve plotted using
this molecular score showed a high accuracy for diagnosing tubulointerstitial
fibrosis and tubular cell damage. The robust sensitivity of this score was
confirmed in a validation set of 5 individuals with CKD. These findings
identified novel molecular markers with the potential to contribute to the
detection of tubular cell damage and tubulointerstitial fibrosis in the kidney.