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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 J+Invest+Dermatol
2017 ; 137
(3
): 631-640
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Glycyrrhizin Ameliorates Fibrosis, Vasculopathy, and Inflammation in Animal
Models of Systemic Sclerosis
#MMPMID27777101
Yamashita T
; Asano Y
; Taniguchi T
; Nakamura K
; Saigusa R
; Miura S
; Toyama T
; Takahashi T
; Ichimura Y
; Yoshizaki A
; Trojanowska M
; Sato S
J Invest Dermatol
2017[Mar]; 137
(3
): 631-640
PMID27777101
show ga
Systemic sclerosis (SSc) is a multisystem inflammatory and vascular disease
resulting in extensive tissue fibrosis. Glycyrrhizin, clinically used for chronic
hepatic diseases and itching dermatitis, modulates the pathological processes of
inflammation, vasculopathy, and fibrosis in human diseases and their animal
models. Therefore, we investigated a potential impact of glycyrrhizin on the key
pathological manifestations of SSc, including inflammation, vasculopathy, and
tissue fibrosis, with bleomycin-treated mice mimicking the fibrotic and
inflammatory components of SSc and endothelial cell-specific Fli1-knockout mice
recapitulating SSc vasculopathy. Glycyrrhizin significantly ameliorated dermal
fibrosis in bleomycin-treated mice, which was partly attributable to blockade of
transforming growth factor-? signaling in dermal fibroblasts through the
down-regulation of thrombospondin 1, a latent transforming growth factor-?
receptor, and transcription factors Smad3 and Ets1. Furthermore,
bleomycin-dependent induction of T helper type 2-skewed immune polarization, M2
macrophage infiltration, and endothelial-to-mesenchymal transition were greatly
suppressed in mice administered glycyrrhizin. Glycyrrhizin also improved vascular
permeability of endothelial cell-specific Fli1-knockout mice by increasing the
expression of molecules regulating vascular integrity. These results indicate
that glycyrrhizin ameliorates bleomycin-induced dermal fibrosis through the
inhibition of fibroblast activation, T helper type 2-skewed immune polarization,
M2 macrophage infiltration, and endothelial-to-mesenchymal transition and
improves endothelial Fli1 deficiency-dependent vascular disintegrity, implying
its potential as a disease-modifying drug for SSc.