Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 213.6 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\29891777
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Int+J+Mol+Sci
2018 ; 19
(6
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Caveolin-1 Scaffolding Domain Peptides Alleviate Liver Fibrosis by Inhibiting
TGF-?1/Smad Signaling in Mice
#MMPMID29891777
Lu J
; Zhang J
; Wang Y
; Sun Q
Int J Mol Sci
2018[Jun]; 19
(6
): ä PMID29891777
show ga
Liver fibrosis is the common pathological process characterized by activation of
hepatic stellate cells (HSCs) and overproduction of extracellular matrix (ECM).
Caveolin-1 (Cav1), the principal component of caveolae, is regarded as an
important inhibitor of multiple signaling molecules including transforming growth
factor ?1(TGF-?1) signaling. To evaluate the role of Cav1 in liver fibrosis, Cav1
deficient (Cav1(?/?)) and wild type (WT) mice were subjected to liver fibrosis
induced by carbon tetrachloride (CCl?). Results indicated no significant
difference between Cav1(?/?) and WT mice in inflammation or collagen content
before CCl? treatment. After CCl? administration, Cav1(?/?) mice showed enhanced
TGF-?1 signaling, as reflected by a significantly greater amount of
phosphorylation of Smad2 and collagen deposition in livers over WT animals.
Qualitative and quantitative analysis indicated that inflammatory injury to the
liver was markedly aggravated, accompanied by increased degeneration and necrosis
of hepatocytes, higher alanine aminotransferase (ALT)/aspartate aminotransferase
(AST), TGF-? and IL-1? levels in Cav1(?/?) animals. The mRNA and protein levels
of ?-smooth muscle actin (?-SMA), Collagen ?1(I), and Collagen ?1(III) were
further enhanced in Cav1(?/?) animals. We also observed a significant decrease in
collagen content in Cav1(?/?) and WT animals administrated with Cav1 scaffolding
domain peptides (CSD). In vitro study indicated that phosphorylation of Smad2 was
inhibited after CSD treatment, accompanied by decreased protein levels of ?-SMA,
Collagen ?1(I), and Collagen ?1(III) in HSCs. We conclude that Cav1 is an
important inhibitor of TGF-?1/Smad signaling in HSCs activation and collagen
production, which might make it a promising target for therapy of liver fibrosis.