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2015 ; 10
(9
): 1441-9
Nephropedia Template TP
gab.com Text
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English Wikipedia
The role of Rho/Rho-kinase pathway and the neuroprotective effects of fasudil in
chronic cerebral ischemia
#MMPMID26604905
Yan YY
; Wang XM
; Jiang Y
; Chen H
; He JT
; Mang J
; Shao YK
; Xu ZX
Neural Regen Res
2015[Sep]; 10
(9
): 1441-9
PMID26604905
show ga
The Rho/Rho-kinase signaling pathway plays an important role in cerebral
ischemia/reperfusion injury. However, very few studies have examined in detail
the changes in the Rho/Rho-kinase signaling pathway in chronic cerebral ischemia.
In this study, rat models of chronic cerebral ischemia were established by
permanent bilateral common carotid artery occlusion and intragastrically
administered 9 mg/kg fasudil, a powerful ROCK inhibitor, for 9 weeks. Morris
water maze results showed that cognitive impairment progressively worsened as the
cerebral ischemia proceeded. Immunohistochemistry, semi-quantitative RT-PCR and
western blot analysis showed that the expression levels of Rho-kinase, its
substrate myosin-binding subunit, and its related protein alpha smooth muscle
actin, significantly increased after chronic cerebral ischemia. TUNEL staining
showed that chronic cerebral ischemia could lead to an increase in neuronal
apoptosis, as well as the expression level of caspase-3 in the frontal cortex of
rats subjected to chronic cerebral ischemia. Fasudil treatment alleviated the
cognitive impairment in rats with chronic cerebral ischemia, and decreased the
expression level of Rho-kinase, myosin-binding subunit and alpha smooth muscle
actin. Furthermore, fasudil could regulate cerebral injury by reducing cell
apoptosis and decreasing caspase-3 expression in the frontal cortex. These
findings demonstrate that fasudil can protect against cognitive impairment
induced by chronic cerebral ischemia via the Rho/Rho-kinase signaling pathway and
anti-apoptosis mechanism.