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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 Drug+Des+Devel+Ther
2015 ; 9
(ä): 4979-88
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Role of chymase in the local renin-angiotensin system in keloids: inhibition of
chymase may be an effective therapeutic approach to treat keloids
#MMPMID26357464
Wang R
; Chen J
; Zhang Z
; Cen Y
Drug Des Devel Ther
2015[]; 9
(ä): 4979-88
PMID26357464
show ga
BACKGROUND: Histologically, keloids contain excess fibroblasts and an
overabundance of dermal collagen. Recently, it was reported that chymase induced
a profibrotic response via transforming growth factor-?1 (TGF-?1)/Smad activation
in keloid fibroblasts (KFs). However, the role of chymase in the local
renin-angiotensin system (RAS) in keloids has not been elucidated. This study
aims to determine whether chymase plays an important role in the local RAS in
keloids. METHODS: We compared the expression and activity of chymase in keloids
and normal skin tissues using Western blotting and radioimmunoassay, and studied
the expression of TGF-?1, interleukin-1?, collagen I, hydroxyproline, and
angiotensin II in KFs after chymase and inhibitors' treatment. RESULTS: The
results revealed an increased activity of chymase in keloid tissues, and that
chymase enhanced the expression of angiotensin II, collagen I, TGF-?1, and
interleukin-1? in KFs. Blockade of the chymase pathway involved in the local RAS
lowered the expression of these signaling factors. CONCLUSION: This research
suggests that inhibition of chymase might be an effective therapeutic approach to
improve the clinical treatment of keloids.
|*Renin-Angiotensin System/drug effects
[MESH]
|Adolescent
[MESH]
|Adult
[MESH]
|Angiotensin II Type 1 Receptor Blockers/pharmacology
[MESH]