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2017 ; 18
(8
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Rho-Kinase Blockade Attenuates Podocyte Apoptosis by Inhibiting the Notch
Signaling Pathway in Diabetic Nephropathy
#MMPMID28820432
Matoba K
; Kawanami D
; Nagai Y
; Takeda Y
; Akamine T
; Ishizawa S
; Kanazawa Y
; Yokota T
; Utsunomiya K
Int J Mol Sci
2017[Aug]; 18
(8
): ä PMID28820432
show ga
Podocyte apoptosis is a key process in the onset of diabetic nephropathy. A
significant body of evidence shows that the Notch signaling pathway plays a
central role in this process. We found that Rho-kinase mediates transforming
growth factor ? (TGF-?)-induced Notch ligand Jag1 expression. Importantly,
TGF-?-mediated podocyte apoptosis was attenuated by Rho-kinase inhibition.
Mechanistically, Rho-kinase regulated Jag1 induction via the extracellular
signal-regulated kinase (ERK) 1/2 and c-Jun N-terminal kinase (JNK) but not Smad
pathways. Consistently, the Rho-kinase inhibitor fasudil prevented albuminuria
and the urinary excretion of nephrin in db/db mice and reduced the prevalence of
podocyte apoptosis and Jag1 expression. Finally, the expression of Jag1 and
apoptosis markers such as Bax and cyclin-dependent kinase inhibitor 1A (CDKN1A)
was decreased in podocytes derived from db/db mice treated with fasudil. The
present study provides evidence that Rho-kinase plays a key role in podocyte
apoptosis. Rho-kinase is an attractive therapeutic target for diabetic
nephropathy.