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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
2016 ; 11
(6
): e0156729
Nephropedia Template TP
gab.com Text
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RIPK3-Mediated Necroptosis and Apoptosis Contributes to Renal Tubular Cell
Progressive Loss and Chronic Kidney Disease Progression in Rats
#MMPMID27281190
Zhu Y
; Cui H
; Xia Y
; Gan H
PLoS One
2016[]; 11
(6
): e0156729
PMID27281190
show ga
Tubulointerstitial fibrosis (TIF) is caused by the progressive loss of renal
tubular cells and the consequent replacement of the extracellular matrix. The
progressive depletion of renal tubular cells results from apoptosis and
necroptosis; however, the relative significance of each of these cell death
mechanisms at different stages during the progression of chronic kidney disease
(CKD) remains unclear. We sought to explore the mechanisms of renal tubular cell
death during the early and intermediate stages of chronic renal damage of
subtotal nephrectomied (SNx) rats. The results of tissue histological assays
indicated that the numbers of necrotic dying cells and apoptotic cells were
significantly higher in kidney tissues derived from a rat model of CKD. In
addition, there was a significant increase in necroptosis observed by
transmission electron microscopy (TEM) and an increase in the proportion of
TUNEL-positive cells in kidney tissues from SNx rats compared with control rats,
and necrostatin-1 (Nec-1) could inhibit necroptosis and reduce the proportion of
TUNEL-positive cells. More importantly, we observed a significant increase in the
incidence of necroptosis compared with apoptosis by TEM in vivo and in vitro and
a significant increase in the proportion of TUNEL-positive tubular epithelial
cells that did not express caspase-3 compared with those expressing cleaved
caspase-3 in vitro. Furthermore, treatment with Nec-1 and zVAD strongly reduced
necroptosis- and apoptosis-mediated renal tubular cell death and decreased the
levels of blood urea nitrogen and serum creatinine and tubular damage scores of
SNx rats. These results suggest that necroptotic cell death plays a more
significant role than apoptosis in mediating the loss of renal tubular cells in
SNx rats and that effectively blocking both necroptosis and apoptosis improves
renal function and tubular damage at early and intermediate stages of CKD.
|*Apoptosis
[MESH]
|Animals
[MESH]
|Disease Progression
[MESH]
|Kidney Tubules/*pathology
[MESH]
|Male
[MESH]
|Necrosis
[MESH]
|Rats
[MESH]
|Rats, Sprague-Dawley
[MESH]
|Receptor-Interacting Protein Serine-Threonine Kinases/*metabolism
[MESH]