Jianglong Yu1, Lin Lin2, Xinping Luan3, Xiepan Jing4. 1. Department of Neurosurgery, The Second Affiliated Hospital of Xinjiang Medical UniversityUrumqi 830063, Xinjiang, P.R. China; Department of Neurosurgery, People's Hospital of Xinjiang Bazhou RegionKorla 841000, Xinjiang, P.R. China. 2. Department of Neurosurgery, The Fourth Affiliated Hospital of Xinjiang Medical University Urumqi, 830000, P.R. China. 3. Department of Neurosurgery, The Second Affiliated Hospital of Xinjiang Medical University Urumqi 830063, Xinjiang, P.R. China. 4. Department of Neurosurgery, People's Hospital of Xinjiang Bazhou Region Korla 841000, Xinjiang, P.R. China.
Abstract
OBJECTIVE: The aim of this study was to study the impacts of Rho kinase inhibitor Fasudil on expressions of Rho/ROCK signaling pathway associated genes in rabbits with optic nerve injury (ONI), and to explore the therapeutic mechanisms towards ONI. METHODS: The rabbit ONI model was established, then the rabbits were divided into model group (treated with saline), control group (treated with dexamethasone, Dex), and intervention group (treated with Fasudil, Fas). The eyeball and optic nerve were sampled at 3, 7, 14 and 21 days after injury. The morphological changes of retina and optic nerve were observed. The expressions of RhoA, Caspase-3, Rock 2 and Nogo-A gene were determined by immunohistochemistry and real-time polymerase chain reaction (RT-PCR) methods. RESULTS: At different time after injury, there were significant differences of RhoA, Caspase-3, Rock 2 and Nogo-A gene expression among three groups (P < 0.05). CONCLUSIONS: After ONI, Fas can decrease the expression of Caspase-3 gene, and down-regulate the expressions of Nogo-A and Rock 2 gene. Therefore, it can treat ONI through affecting the Rho/ROCK signaling pathway.
OBJECTIVE: The aim of this study was to study the impacts of Rho kinase inhibitor Fasudil on expressions of Rho/ROCK signaling pathway associated genes in rabbits with optic nerve injury (ONI), and to explore the therapeutic mechanisms towards ONI. METHODS: The rabbit ONI model was established, then the rabbits were divided into model group (treated with saline), control group (treated with dexamethasone, Dex), and intervention group (treated with Fasudil, Fas). The eyeball and optic nerve were sampled at 3, 7, 14 and 21 days after injury. The morphological changes of retina and optic nerve were observed. The expressions of RhoA, Caspase-3, Rock 2 and Nogo-A gene were determined by immunohistochemistry and real-time polymerase chain reaction (RT-PCR) methods. RESULTS: At different time after injury, there were significant differences of RhoA, Caspase-3, Rock 2 and Nogo-A gene expression among three groups (P < 0.05). CONCLUSIONS: After ONI, Fas can decrease the expression of Caspase-3 gene, and down-regulate the expressions of Nogo-A and Rock 2 gene. Therefore, it can treat ONI through affecting the Rho/ROCK signaling pathway.
Entities:
Keywords:
Fasudil; Nogo-A; Rock 2; optic nerve injury
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