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2015 ; 5
(ä): 16386
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Resveratrol inhibits epithelial-mesenchymal transition of retinal pigment
epithelium and development of proliferative vitreoretinopathy
#MMPMID26552368
Ishikawa K
; He S
; Terasaki H
; Nazari H
; Zhang H
; Spee C
; Kannan R
; Hinton DR
Sci Rep
2015[Nov]; 5
(ä): 16386
PMID26552368
show ga
Proliferative vitreoretinopathy (PVR) is a serious complication of retinal
detachment and ocular trauma, and its recurrence may lead to irreversible vision
loss. Epithelial to mesenchymal transition (EMT) of retinal pigment epithelial
(RPE) cells is a critical step in the pathogenesis of PVR, which is characterized
by fibrotic membrane formation and traction retinal detachment. In this study, we
investigated the potential impact of resveratrol (RESV) on EMT and the fibrotic
process in cultured RPE cells and further examined the preventive effect of RESV
on PVR development using a rabbit model of PVR. We found that RESV induces
mesenchymal to epithelial transition (MET) and inhibits transforming growth
factor-?2(TGF-?2)-induced EMT of RPE cells by deacetylating SMAD4. The effect of
RESV on MET was dependent on sirtuin1 activation. RESV suppressed proliferation,
migration and fibronectin synthesis induced by platelet-derived growth factor-BB
or TGF-?2. In vivo, RESV inhibited the progression of experimental PVR in rabbit
eyes. Histological findings showed that RESV reduced fibrotic membrane formation
and decreased ?-SMA expression in the epiretinal membranes. These results suggest
the potential use of RESV as a therapeutic agent to prevent the development of
PVR by targeting EMT of RPE.