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2015 ; 21
(ä): 688-98
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Fasudil hydrochloride, a potent ROCK inhibitor, inhibits corneal
neovascularization after alkali burns in mice
#MMPMID26120273
Zeng P
; Pi RB
; Li P
; Chen RX
; Lin LM
; He H
; Zhou SY
Mol Vis
2015[]; 21
(ä): 688-98
PMID26120273
show ga
PURPOSE: To investigate the effects and mechanisms of fasudil hydrochloride
(fasudil) on and in alkali burn-induced corneal neovascularization (CNV) in mice.
METHODS: To observe the effect of fasudil, mice with alkali-burned corneas were
treated with either fasudil eye drops or phosphate-buffered saline (PBS) four
times per day for 14 consecutive days. After injury, CNV and corneal epithelial
defects were measured. The production of reactive oxygen species (ROS) and heme
oxygenase-1(HO-1) was measured. The infiltration of polymorphonuclear neutrophils
(PMNs) and the mRNA expressions of CNV-related genes were analyzed on day 14.
RESULTS: The incidence of CNV was significantly lower after treatment with 100 ?M
and 300 ?M fasudil than with PBS, especially with 100 ?M fasudil. Meanwhile, the
incidences of corneal epithelial defects was lower (n=15, all p<0.01). After
treatment with 100 ?M fasudil, the intensity of DHE ?uorescence was reduced in
the corneal epithelium and stroma than with PBS treatment (n=5, all p<0.01), and
the number of filtrated PMNs decreased. There were significant differences
between the expressions of VEGF, TNF-a, MMP-8, and MMP-9 in the 100 ?M fasudil
group and the PBS group (n=8, all p<0.05). The production of HO-1 protein in the
100 ?M fasudil group was 1.52±0.34 times more than in the PBS group (n=5 sample,
p<0.05). CONCLUSIONS: 100 ?M fasudil eye drops administered four times daily can
significantly inhibit alkali burn-induced CNV and promote the healing of corneal
epithelial defects in mice. These effects are attributed to a decrease in
inflammatory cell infiltration, reduction of ROS, and upregulation of HO-1
protein after fasudil treatment.