a novel animal model of partial optic nerve transection established using an optic nerve quantitative amputator一种新的动物模型部分视神经横断建立量化切断器使用一个视神经.pdfVIP
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a novel animal model of partial optic nerve transection established using an optic nerve quantitative amputator一种新的动物模型部分视神经横断建立量化切断器使用一个视神经
A Novel Animal Model of Partial Optic Nerve Transection Established Using an Optic Nerve Quantitative Amputator 1,2 3 4 1 1 Xu Wang , Ying Li *, Yan He , Hong-Sheng Liang , En-Zhong Liu * 1 Department of Neurosurgery, First Affiliated Hospital, Harbin Medical University, Harbin, China, 2 Department of Neurosurgery, NO.211 Hospital of PLA, Harbin, China, 3 Department of Nutrition and Food Hygiene, Public Health College, Harbin Medical University, Harbin, China, 4 Department of Pathology, Basic Medical College, Harbin Medical University, Harbin, China Abstract Background: Research into retinal ganglion cell (RGC) degeneration and neuroprotection after optic nerve injury has received considerable attention and the establishment of simple and effective animal models is of critical importance for future progress. Methodology/Principal Findings: In the present study, the optic nerves of Wistar rats were semi-transected selectively with a novel optic nerve quantitative amputator. The variation in RGC density was observed with retro-labeled fluorogold at different time points after nerve injury. The densities of surviving RGCs in the experimental eyes at different time points were 1113.69 6188.83 RGC/mm2 (the survival rate was 63.81% compared with the contralateral eye of the same animal) 1 week post surgery; 748.22 6134.75 /mm2 (46.16% survival rate) 2 weeks post surgery; 505.036118.67 /mm2 (30.52% survival rate) 4 weeks post surgery; 436.86676.36 /mm2 (24.01% survival rate) 8 weeks post surgery; and 378.20666.74 /mm2 (20.30% survival rate) 12 weeks post surgery. Simultaneously, we also measured the axonal distribution of optic nerve fibers; the latency and amplitude of pattern visual evoke potentials (P-VEP); and the
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