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2016 ; 6
(ä): 32087
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English Wikipedia
Calcineurin inhibitors cyclosporin A and tacrolimus protect against podocyte
injury induced by puromycin aminonucleoside in rodent models
#MMPMID27580845
Shen X
; Jiang H
; Ying M
; Xie Z
; Li X
; Wang H
; Zhao J
; Lin C
; Wang Y
; Feng S
; Shen J
; Weng C
; Lin W
; Wang H
; Zhou Q
; Bi Y
; Li M
; Wang L
; Zhu T
; Huang X
; Lan HY
; Zhou J
; Chen J
Sci Rep
2016[Sep]; 6
(ä): 32087
PMID27580845
show ga
Podocyte injury and the appearance of proteinuria are features of minimal-change
disease (MCD). Cyclosporin A (CsA) and tacrolimus (FK506) has been reported to
reduce proteinuria in patients with nephrotic syndrome, but mechanisms remain
unknown. We, therefore, investigated the protective mechanisms of CsA and FK506
on proteinuria in a rat model of MCD induced by puromycin aminonucleoside (PAN)
and in vitro cultured mouse podocytes. Our results showed that CsA and FK506
treatment decreased proteinuria via a mechanism associated to a reduction in the
foot-process fusion and desmin, and a recovery of synaptopodin and podocin. In
PAN-treated mouse podocytes, pre-incubation with CsA and FK506 restored the
distribution of the actin cytoskeleton, increased the expression of synaptopodin
and podocin, improved podocyte viability, and reduced the migrating activities of
podocytes. Treatment with CsA and FK506 also inhibited PAN-induced podocytes
apoptosis, which was associated with the induction of Bcl-xL and inhibition of
Bax, cleaved caspase 3, and cleaved PARP expression. Further studies revealed
that CsA and FK506 inhibited PAN-induced p38 and JNK signaling, thereby
protecting podocytes from PAN-induced injury. In conclusion, CsA and FK506
inhibit proteinuria by protecting against PAN-induced podocyte injury, which may
be associated with inhibition of the MAPK signaling pathway.