Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\27221338
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2016 ; 6
(ä): 26740
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
C-Reactive Protein Promotes Diabetic Kidney Disease in db/db Mice via the
CD32b-Smad3-mTOR signaling Pathway
#MMPMID27221338
You YK
; Huang XR
; Chen HY
; Lyu XF
; Liu HF
; Lan HY
Sci Rep
2016[May]; 6
(ä): 26740
PMID27221338
show ga
C-reactive protein (CRP) is associated with progressive diabetic nephropathy in
patients with type-2 diabetes (T2DN). However, role of CRP in T2DN remains
unclear. We report here that CRP is pathogenic in T2DN in db/db mice that express
human CRP (CRPtg-db/db). Compared to the littermate db/db mice, CRPtg-db/db
developed more severe T2DN, showing higher levels of fasting blood glucose and
microalbuminuria and more progressive renal inflammation and fibrosis. Enhanced
T2DN in CRPtg-db/db mice were associated with over-activation of CRP-CD32b,
NF-?B, TGF-?/Smad3, and mTOR signaling. Further studies in vitro defined that CRP
activated Smad3 directly at 15?mins via the CD32b- ERK/p38 MAP kinase crosstalk
pathway and indirectly at 24?hours through a TGF-?1-dependent mechanism.
Importantly, CRP also activated mTOR signaling at 30?mins via a Smad3-dependent
mechanism as Smad3 bound mTOR physically and CRP-induced mTOR signaling was
abolished by a neutralizing CD32b antibody and a specific Smad3 inhibitor.
Finally, we also found that CRP induced renal fibrosis through a CD32b-Smad3-mTOR
pathway because blocking mTOR signaling with rapamycin inhibited CRP-induced CTGF
and collagen I expression. Thus, CRP is pathogenic in T2DN. CRP may promote
CD32b- NF-?B signaling to mediate renal inflammation; whereas, CRP may enhance
renal fibrosis in T2DN via CD32b-Smad3-mTOR signaling.